技术领域Technical field
本发明涉及具有光电催化功能的柔性电子织物技术领域，具体涉及一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物及制备方法与应用。The invention relates to the technical field of flexible electronic fabrics with photoelectrocatalytic functions, and specifically to a flexible electronic fabric with an interdigital electrode structure based on photoelectrocatalytic degradation of volatile organic pollutants, as well as a preparation method and application.
背景技术Background technique
城市化和工业化导致挥发性有机化合物排放量迅速增加，对生态环境和人类健康构成严重威胁。19世纪下半叶和整个20世纪见证了人类社会工业活动的加剧和科学技术的迅速发展，但与此同时，这种发展也带来了污染，对大气、水资源和土壤造成了严重的破坏。Urbanization and industrialization have led to a rapid increase in emissions of volatile organic compounds, posing a serious threat to the ecological environment and human health. The second half of the 19th century and the entire 20th century witnessed the intensification of industrial activities in human society and the rapid development of science and technology. However, at the same time, this development also brought pollution and caused serious damage to the atmosphere, water resources and soil. .
为了最大限度地改善空气质量，越来越多的研究人员正在研究消除大气中挥发性有机物的策略。目前，为了实现去除大气中挥发性有机污染物的目标，研究人员发明了基于吸附、冷凝、膜分离的物理技术，燃烧、等离子体技术等化学方法，以及生物降解技术。这些方法大部分存在二次污染、操作复杂、设备昂贵、容易受到环境因素影响等缺陷，严重限制了其在日常生活中的应用。相比于这些技术，催化氧化法能耗低、方便便捷、在室温下借助光触媒与挥发性有机污染物发生催化反应能将其完全氧化为无毒无害的水和二氧化碳，达到无害化处理的治理效果。To maximize air quality improvements, a growing number of researchers are investigating strategies to eliminate volatile organic compounds from the atmosphere. Currently, in order to achieve the goal of removing volatile organic pollutants from the atmosphere, researchers have invented physical technologies based on adsorption, condensation, and membrane separation, chemical methods such as combustion and plasma technology, and biodegradation technologies. Most of these methods have shortcomings such as secondary pollution, complex operations, expensive equipment, and susceptibility to environmental factors, which seriously limit their application in daily life. Compared with these technologies, the catalytic oxidation method has low energy consumption, is convenient and convenient, and uses a photocatalyst to react with volatile organic pollutants at room temperature to completely oxidize them into non-toxic and harmless water and carbon dioxide, achieving harmless treatment. governance effect.
目前的研究工作表明，在使用半导体光触媒作为光催化材料时，虽然可以通过负载贵金属和过渡金属来提高光催化效率，但是由于半导体材料光生电子空穴对非常容易发生复合，造成了降解挥发性有机污染物效率大大降低。因此可以通过额外的电催化来辅助光催化减少这一缺陷带来的影响从而提高挥发性有机污染物的去除效率。目前几乎所有的提出降解挥发性有机污染物的原理结构都过于复杂，无法大规模制造工艺进行设计，因此设计一款可通过自动化大规模生产的具有光电催化降解挥发性有机污染物的器件结构尤为重要。Current research work shows that when using semiconductor photocatalysts as photocatalytic materials, although the photocatalytic efficiency can be improved by loading noble metals and transition metals, the photogenerated electron-hole pairs of semiconductor materials are very easy to recombine, resulting in the degradation of volatile organic compounds. Pollutant efficiency is greatly reduced. Therefore, additional electrocatalysis can be used to assist photocatalysis to reduce the impact of this defect and improve the removal efficiency of volatile organic pollutants. At present, almost all the principle structures proposed to degrade volatile organic pollutants are too complex to be designed for large-scale manufacturing processes. Therefore, it is particularly important to design a device structure with photoelectrocatalytic degradation of volatile organic pollutants that can be produced through automated mass production. important.
发明内容Contents of the invention
解决的技术问题：针对现有技术中存在的问题，本发明提供一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物及制备方法与应用，该功能性柔性电子织物在室内环境下可以根据房屋实际空间面积大小刺绣不同规格尺寸或者同时放置多个相同的柔性电子织物用于挥发性有机污染物的降解。Technical Problems Solved: In view of the problems existing in the prior art, the present invention provides a flexible electronic fabric with an interdigital electrode structure based on photoelectrocatalytic degradation of volatile organic pollutants and a preparation method and application thereof. The functional flexible electronic fabric can be used indoors In the environment, different sizes can be embroidered according to the actual space area of the house, or multiple identical flexible electronic fabrics can be placed at the same time for the degradation of volatile organic pollutants.
技术方案：一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物，包括底部过滤网层、在过滤网上刺绣的叉指电极层和附着于叉指电极层顶部的光催化材料层，以及进行供电的外部直流电源和提供光照的外部光源，所述外部直流电源正负极通过鳄鱼夹连接在叉指电极层两端，进行供电提供电催化条件，所述外部光源放置在附着光催化材料层的上方，对织物进行光照提供光催化条件。Technical solution: A flexible electronic fabric with an interdigitated electrode structure based on photoelectrocatalytic degradation of volatile organic pollutants, including a bottom filter layer, an interdigitated electrode layer embroidered on the filter, and a photocatalytic material attached to the top of the interdigitated electrode layer layer, as well as an external DC power supply for power supply and an external light source for illumination. The positive and negative poles of the external DC power supply are connected to both ends of the interdigital electrode layer through alligator clips to provide power supply and provide electrocatalytic conditions. The external light source is placed on the attached Above the photocatalytic material layer, the fabric is illuminated to provide photocatalytic conditions.
作为优选，所述过滤网层为尼龙网、纱网布或筛网滤布，过滤网的缝隙大小为10目~400目，具有绝缘性和良好的透气性。Preferably, the filter layer is made of nylon mesh, gauze cloth or screen filter cloth. The gap size of the filter mesh is 10 mesh to 400 mesh, and it has insulation and good air permeability.
作为优选，所述叉指电极层采用导电性优异的导电纤维进行刺绣，所述导电纤维包括金属纤维、炭黑系纤维、导电型金属化合物纤维或导电高分子型纤维。如银纤维、316L不锈钢纤维、铜纤维、碳纤维等。Preferably, the interdigital electrode layer is embroidered with conductive fibers with excellent conductivity. The conductive fibers include metal fibers, carbon black fibers, conductive metal compound fibers or conductive polymer fibers. Such as silver fiber, 316L stainless steel fiber, copper fiber, carbon fiber, etc.
进一步的，所述导电纤维单丝厘米电阻在0.1 Ω~1 kΩ之间。Further, the centimeter resistance of the conductive fiber monofilament is between 0.1 Ω and 1 kΩ.
进一步的，所述叉指电极层中叉指电极形状、长度、宽度、叉指个数和叉指电极之间的距离可以根据实际需求进行选择，所述叉指电极长度、宽度、叉指个数没有限制，根据刺绣机能够刺绣的最小到最大范围内进行调整。Furthermore, the shape, length, width, number of interdigitated electrodes and the distance between the interdigitated electrodes in the interdigitated electrode layer can be selected according to actual needs. There is no limit to the number, and it can be adjusted according to the minimum to maximum range that the embroidery machine can embroider.
作为优选，所述叉指电极之间的距离为3~7 mm。Preferably, the distance between the interdigitated electrodes is 3~7 mm.
作为优选，所述光催化材料层中光催化材料为光触媒材料。如TiO2、ZrO2、ZnO、CdS、WO3、Fe2O3、PbS、SnO2、ZnS、SrTiO3、SiO2、g-C3N4等，或者负载贵金属型光催化剂，如Pt、Pd、Au、Ag等。Preferably, the photocatalytic material in the photocatalytic material layer is a photocatalyst material. Such as TiO2 , ZrO2 , ZnO, CdS, WO3 , Fe2 O3 , PbS, SnO2 , ZnS, SrTiO3 , SiO2 , gC3 N4 , etc., or loaded precious metal photocatalysts, such as Pt, Pd, Au, Ag, etc.
作为优选，所述光催化材料层中光催化材料为光触媒材料和聚氨酯类黏附材料的混合物，能够更好地使光催化材料附着在刺绣了叉指电极的过滤网上，混合比例可以按照附着的牢固度进行选择。Preferably, the photocatalytic material in the photocatalytic material layer is a mixture of photocatalytic material and polyurethane adhesive material, which can better enable the photocatalytic material to adhere to the filter net embroidered with interdigitated electrodes. The mixing ratio can be determined according to the firmness of the adhesion. degree to select.
作为优选，所述聚氨酯类黏附材料的质量百分数为1wt%~10wt%。Preferably, the mass percentage of the polyurethane adhesive material is 1wt%~10wt%.
基于上述一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物的制备方法，步骤如下：在过滤网层上刺绣叉指电极层，然后在叉指电极层上喷涂或浸涂光催化材料层，然后将外部直流电源通过鳄鱼夹连接在叉指电极层两端，以紫外光或可见光作为外部光源，放置在涂覆光催化材料层上方即可。喷涂或者浸涂次数可以根据所需附着光催化材料量进行选择，外部直流电源对叉指电极施加的电压大小根据所选择的光催化材料进行调节，光源的输出功率大小与织物距离也可以根据光催化材料性能进行调节。Based on the above-mentioned preparation method of an interdigitated electrode structure flexible electronic fabric based on photoelectrocatalytic degradation of volatile organic pollutants, the steps are as follows: embroidering the interdigitated electrode layer on the filter layer, and then spraying or dipping on the interdigitated electrode layer The photocatalytic material layer is then connected to the two ends of the interdigital electrode layer through an external DC power supply through alligator clips, and ultraviolet light or visible light is used as the external light source, and is placed above the photocatalytic material layer. The number of times of spraying or dipping can be selected according to the amount of photocatalytic material required to be attached. The voltage applied by the external DC power supply to the interdigital electrode can be adjusted according to the selected photocatalytic material. The output power of the light source and the distance from the fabric can also be adjusted according to the light source. Catalytic material performance can be adjusted.
作为优选，所述喷涂或浸涂次数为1~5次。Preferably, the number of spraying or dipping times is 1 to 5 times.
作为优选，所述电压为5~35 V。Preferably, the voltage is 5~35 V.
基于上述一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物在光催化降解挥发性有机污染物中的应用，所述挥发性有机污染物包括甲醛、甲苯、氨气、一氧化氮、含氮气体废气、含硫废气污染物、碳氧化物或有机烃废污染物。Based on the above-mentioned application of an interdigitated electrode structure flexible electronic fabric based on photoelectrocatalytic degradation of volatile organic pollutants, the volatile organic pollutants include formaldehyde, toluene, ammonia, Nitrogen oxides, nitrogen-containing gas exhaust gas, sulfur-containing exhaust gas pollutants, carbon oxides or organic hydrocarbon waste pollutants.
作为优选，所述挥发性有机污染物的浓度为5~40 ppm。Preferably, the concentration of the volatile organic pollutants is 5 to 40 ppm.
基于上述一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物在降解生物气溶胶中的应用，所述生物气溶胶为微生物气溶胶，所述微生物气溶胶为细菌、真菌或病毒。Based on the above-mentioned application of an interdigitated electrode structure flexible electronic fabric based on photoelectrocatalytic degradation of volatile organic pollutants in degrading bioaerosols, the bioaerosols are microbial aerosols, and the microbial aerosols are bacteria, fungi or Virus.
本发明的成型原理为：本发明采用10目~400目的过滤网作为底部待刺绣织物，采用导电性能优异的导电纤维进行刺绣，单丝厘米电阻在0.1 Ω~1 kΩ之间；采用刺绣机将导电纤维刺绣在底部过滤网上形成叉指电极结构，叉指电极形状、长度、宽度、叉指个数和叉指电极之间的距离可以根据实际需求进行选择；将光触媒材料或者混合聚氨酯类粘附剂的光催化材料通过喷枪喷涂至刺绣了叉指电极结构的尼龙网表面，也可以通过将刺绣了叉指电极结构的过滤网浸泡在触媒材料或者混合聚氨酯类粘附剂的光催化材料溶液里，喷涂次数和浸泡次数可以根据所需负载光催化材料含量进行选择，需要注意的是，下一次喷涂或者浸泡光催化材料开始前必须保证上一次喷涂或者浸泡的光催化材料完全干燥，防止织物表面处于饱和状态后导致重复喷涂或者浸涂没有达到累积涂覆效果；将外部直流电源正负极直接施加在刺绣了叉指电极的织物两端，并同时开启直流电源开关和外部光源开关，从而使得光电催化协同作用降解挥发性有机污染物。The molding principle of the present invention is: the present invention uses a 10-mesh to 400-mesh filter as the bottom fabric to be embroidered, and uses conductive fibers with excellent conductivity for embroidery. The single-filament centimeter resistance is between 0.1 Ω and 1 kΩ; an embroidery machine is used to embroider the fabric. The conductive fiber embroidery forms an interdigitated electrode structure on the bottom filter. The shape, length, width, number of interdigitated electrodes and the distance between the interdigitated electrodes can be selected according to actual needs; photocatalyst material or mixed polyurethane is adhered The photocatalytic material of the agent is sprayed onto the surface of the nylon mesh embroidered with the interdigitated electrode structure through a spray gun, or the filter embroidered with the interdigitated electrode structure can be soaked in the catalyst material or the photocatalytic material solution mixed with the polyurethane adhesive. , the number of spraying and soaking times can be selected according to the required content of the photocatalytic material to be loaded. It should be noted that before the next spraying or soaking of the photocatalytic material, it must be ensured that the last sprayed or soaked photocatalytic material is completely dry to prevent the fabric surface from After being in a saturated state, repeated spraying or dipping does not achieve the cumulative coating effect; apply the positive and negative poles of the external DC power supply directly to both ends of the fabric embroidered with interdigital electrodes, and turn on the DC power switch and the external light source switch at the same time, so that Photoelectrocatalysis synergistically degrades volatile organic pollutants.
有益效果：与现有技术相比，本发明的具有如下显著优点：Beneficial effects: Compared with the existing technology, the present invention has the following significant advantages:
（1）本发明的基于在过滤网上刺绣的叉指电极织物，通过涂覆不同的光催化材料以及对制备好的织物同时施加额外的电压和光照可以达到对挥发性有机污染物降解的目的；(1) Based on the interdigitated electrode fabric embroidered on the filter mesh of the present invention, the purpose of degrading volatile organic pollutants can be achieved by coating different photocatalytic materials and applying additional voltage and light to the prepared fabric at the same time;
（2）本发明提供一种适合大批量、自动化生产具有光电催化降解挥发性有机污染物功能的柔性电子织物制备方法，可以根据刺绣机的最小到最大刺绣尺寸制作不同规格大小的叉指电极结构的柔性电子织物，以达到降解不同浓度挥发性有机污染物浓度的目的，并且可以同时放置多块相同的柔性电子织物以达到快速降解挥发性有机污染物的目的，具有重要的实用性；(2) The present invention provides a preparation method suitable for large-scale, automated production of flexible electronic fabrics with photoelectrocatalytic degradation of volatile organic pollutants. Interdigital electrode structures of different sizes can be produced according to the minimum to maximum embroidery sizes of the embroidery machine. The flexible electronic fabric can achieve the purpose of degrading different concentrations of volatile organic pollutants, and multiple pieces of the same flexible electronic fabric can be placed at the same time to achieve the purpose of quickly degrading volatile organic pollutants, which has important practicality;
（3）本发明的光电催化降解挥发性有机污染物的柔性电子织物具有制作成本低、操作简单，单纯使用电催化或者光催化作用于涂覆光催化材料的叉指电极的织物也能对挥发性有机污染物进行降解，具有广泛的应用前景。(3) The flexible electronic fabric of the present invention that photoelectrocatalytically degrades volatile organic pollutants has low production cost and simple operation. Fabrics that simply use electrocatalysis or photocatalysis on interdigital electrodes coated with photocatalytic materials can also degrade volatile organic pollutants. It can degrade organic pollutants and has broad application prospects.
附图说明Description of the drawings
图1是本发明刺绣不同叉指电极形状结构的柔性电子织物示意图，图中（a）为刺绣的直线型叉指电极结构；（b）为刺绣的波浪形叉指电极结构；Figure 1 is a schematic diagram of a flexible electronic fabric embroidered with different interdigital electrode shape structures according to the present invention. In the figure (a) is an embroidered linear interdigital electrode structure; (b) is an embroidered wavy interdigital electrode structure;
图2是刺绣的直线型叉指电极结构涂覆光催化层的柔性电子织物降解挥发性有机污染物原理图；Figure 2 is a schematic diagram of the degradation of volatile organic pollutants by a flexible electronic fabric with an embroidered linear interdigital electrode structure coated with a photocatalytic layer;
图3是316L不锈钢纤维刺绣的直线型叉指电极结构实际加工成不同间距叉指电极的柔性电子织物结构，（a）电极间距d=3 mm，（b）电极间距为d=5 mm，（c）电极间距为d=7 mm。Figure 3 shows the linear interdigital electrode structure embroidered with 316L stainless steel fiber actually processed into a flexible electronic fabric structure with interdigitated electrodes with different spacing. (a) The electrode spacing is d=3 mm, (b) The electrode spacing is d=5 mm, ( c) The electrode spacing is d=7 mm.
图4是不同浓度聚氨酯混合光催化材料的（a）紫外吸收光谱图和（b）荧光光谱图；Figure 4 shows (a) UV absorption spectrum and (b) fluorescence spectrum of polyurethane mixed photocatalytic materials with different concentrations;
图5是刺绣的直线型叉指电极间距分别为（a）3 mm，（b）5 mm和（c）7 mm涂覆3次光催化层在不同电压下光电催化降解40 ppm甲醛随时间变化图；Figure 5 shows the photoelectrocatalytic degradation of 40 ppm formaldehyde over time by embroidered linear interdigitated electrodes with spacings of (a) 3 mm, (b) 5 mm and (c) 7 mm coated three times with a photocatalytic layer at different voltages. picture;
图6是刺绣的电极间距为5 mm的直线型叉指电极结构顶部涂覆不同次数的光催化材料层在3个小时内施加30 V电压光电催化降解40 ppm的去除效率；Figure 6 shows the removal efficiency of photoelectrocatalytic degradation of 40 ppm when a voltage of 30 V is applied for 3 hours on the top of an embroidered linear interdigital electrode structure with an electrode spacing of 5 mm and coated with photocatalytic material layers for different times.
图7是刺绣的电极间距为5 mm的直线型叉指电极结构在涂覆3次光催化层下施加30 V电压光电催化完全降解不同浓度甲醛所需时间。Figure 7 shows the time required for the photoelectrocatalytic complete degradation of different concentrations of formaldehyde by applying a voltage of 30 V to an embroidered linear interdigitated electrode structure with an electrode spacing of 5 mm and being coated with a photocatalytic layer three times.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步描述。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
实施例1Example 1
本实施例一种基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物，包括底部过滤网层、在过滤网上刺绣的叉指电极层和附着于叉指电极层顶部的光催化材料层，以及进行供电的外部直流电源和提供光照的外部光源，所述外部直流电源正负极通过鳄鱼夹连接在叉指电极层两端，进行供电提供电催化条件，所述外部光源放置在附着光催化材料层的上方，对织物进行光照提供光催化条件，如附图2所示。This embodiment is a flexible electronic fabric with an interdigitated electrode structure based on photoelectrocatalytic degradation of volatile organic pollutants, including a bottom filter layer, an interdigitated electrode layer embroidered on the filter, and a photocatalytic material attached to the top of the interdigitated electrode layer. layer, as well as an external DC power supply for power supply and an external light source for illumination. The positive and negative poles of the external DC power supply are connected to both ends of the interdigital electrode layer through alligator clips to provide power supply and provide electrocatalytic conditions. The external light source is placed on the attached Above the photocatalytic material layer, the fabric is illuminated to provide photocatalytic conditions, as shown in Figure 2.
具体制备过程如下：The specific preparation process is as follows:
（1）选取60目、长和宽为20 cm*20 cm的尼龙网作为底部刺绣层，将厘米电阻为0.9Ω的316L不锈钢纤维刺绣成叉指电极形式的柔性电子织物。首先用威尔克姆程序生成直线型叉指电极结构刺绣布局，如附图1（a）所示（也可换成波浪形叉指电极结构，如图1（b）所示），并通过闪存驱动器导入绣花机，然后将316L SSF穿入刺绣机并在刺绣针处放置待刺绣的底层织物，最后开动机器进行刺绣操作。刺绣的叉指电极间距离为5 mm用于降解40 ppm甲醛，如附图3（b）所示；(1) Select a 60-mesh nylon mesh with a length and width of 20 cm*20 cm as the bottom embroidery layer, and embroider 316L stainless steel fibers with a centimeter resistance of 0.9Ω into a flexible electronic fabric in the form of interdigitated electrodes. First, use the Wilkom program to generate a linear interdigitated electrode structure embroidery layout, as shown in Figure 1(a) (it can also be replaced with a wavy interdigitated electrode structure, as shown in Figure 1(b)), and pass The flash drive is imported into the embroidery machine, then the 316L SSF is threaded into the embroidery machine and the underlying fabric to be embroidered is placed at the embroidery needle, and finally the machine is started for embroidery operation. The distance between the embroidered interdigital electrodes is 5 mm for degrading 40 ppm formaldehyde, as shown in Figure 3(b);
（2）选取1wt%金属铂负载的二氧化钛作为光触媒材料，并在1wt%金属铂负载的二氧化钛溶液中添加5wt%聚氨酯作为粘附剂，通过超声震荡十分钟让聚氨酯完全分散于二氧化钛溶液中；(2) Select 1wt% platinum-loaded titanium dioxide as the photocatalyst material, add 5wt% polyurethane as an adhesive to the 1wt% platinum-loaded titanium dioxide solution, and allow the polyurethane to be completely dispersed in the titanium dioxide solution through ultrasonic vibration for ten minutes;
（3）将制备好的混合溶液倒入口径为0.6 mm的喷枪的喷壶中，需要注意的是柔性电子织物与直流电源连接的两端不能喷涂到二氧化钛混合溶液，否则会影响导电性从而降低光电催化效果，可以直接用锡箔纸包住刺绣的叉指电极两端。最后开启喷枪从上到下喷涂直至织物表面完全润湿，并移至80 ℃烘箱中，大约持续20 min保证柔性电子织物表面干燥状态。并且可以重复上述喷涂-烘干操作增加叉指电极表面附着光催化材料量，在这里，通过重复喷涂3次制备基于光电催化降解挥发性有机污染物的叉指电极结构柔性电子织物。(3) Pour the prepared mixed solution into the spray bottle of a spray gun with a diameter of 0.6 mm. It should be noted that the two ends where the flexible electronic fabric is connected to the DC power supply cannot be sprayed with the titanium dioxide mixed solution, otherwise it will affect the conductivity and reduce the photoelectricity. For the catalytic effect, you can directly wrap the two ends of the embroidered interdigital electrodes with tin foil. Finally, open the spray gun and spray from top to bottom until the fabric surface is completely wetted, and then move it to an oven at 80°C for about 20 minutes to ensure that the surface of the flexible electronic fabric is dry. And the above spraying-drying operation can be repeated to increase the amount of photocatalytic material attached to the surface of the interdigital electrode. Here, a flexible electronic fabric with an interdigital electrode structure based on photoelectrocatalytic degradation of volatile organic pollutants is prepared by repeating spraying three times.
（4）在这里，步骤（2）中1wt%金属铂负载的二氧化钛溶液中可以添加0~10wt%浓度的聚氨酯黏附材料（PU），二者混合的光催化溶液通过紫外光谱仪和荧光分光光度计测的吸收度和强度分别如附图4（a）和附图4（b）所示，可以看出随着聚氨酯浓度的增加光催化材料的整体性能随之下降，作为优选的，结合实际中电催化的辅助效果，后续实施例都采用5wt%浓度的聚氨酯作为最合适的黏附材料添加浓度。(4) Here, in step (2), a polyurethane adhesive material (PU) with a concentration of 0~10wt% can be added to the 1wt% metal platinum-loaded titanium dioxide solution, and the mixed photocatalytic solution passes through a UV spectrometer and a fluorescence spectrophotometer. The measured absorbance and intensity are shown in Figure 4(a) and Figure 4(b) respectively. It can be seen that as the polyurethane concentration increases, the overall performance of the photocatalytic material decreases. As a preferred option, combined with the actual For the auxiliary effect of electrocatalysis, subsequent embodiments all use polyurethane with a concentration of 5wt% as the most appropriate concentration of adhesive material.
实施例2Example 2
同实施例1，区别在于，步骤（1）中选取采用60目筛网作为底层刺绣层。Same as Embodiment 1, except that in step (1), a 60-mesh screen is selected as the bottom embroidery layer.
实施例3Example 3
同实施例1，区别在于，步骤（1）中选取采用80目尼龙网作为底层刺绣层。Same as Example 1, except that in step (1), an 80-mesh nylon net is selected as the bottom embroidery layer.
实施例4Example 4
同实施例1，区别在于，步骤（1）中选取采用碳纤维作为导电纤维进行刺绣。It is the same as Embodiment 1, but the difference is that in step (1), carbon fiber is selected as the conductive fiber for embroidery.
实施例5Example 5
同实施例1，区别在于，步骤（1）中刺绣的叉指电极整体尺寸大小为20 cm*20 cm，电极之间距离为3 mm，如附图3（a）所示。Same as Example 1, except that the overall size of the interdigitated electrodes embroidered in step (1) is 20 cm*20 cm, and the distance between the electrodes is 3 mm, as shown in Figure 3(a).
实施例6Example 6
同实施例1，区别在于，步骤（1）中刺绣的叉指电极整体尺寸大小为20 cm*20 cm，电极之间距离为7 mm，如附图3（c）所示。Same as Example 1, except that the overall size of the interdigitated electrodes embroidered in step (1) is 20 cm*20 cm, and the distance between the electrodes is 7 mm, as shown in Figure 3(c).
对实施例1、5和6制备的刺绣成直线型叉指电极间距分别为3 mm，5 mm和7 mm涂覆3次光催化层的产品在不同电压下光电催化降解40 ppm甲醛随时间变化进行性能测试，如附图5（a-c）所示，可以看出在相同时间范围内，不同电极间距下达到最高降解效率所需外部施加电压不一样，作为优选，电压大小可以根据刺绣电极间距进行合理选择。The photoelectrocatalytic degradation of 40 ppm formaldehyde over time for products coated with photocatalytic layers three times on the products prepared in Examples 1, 5 and 6 with embroidered linear interdigital electrode spacings of 3 mm, 5 mm and 7 mm respectively at different voltages. Conduct performance tests, as shown in Figure 5 (a-c). It can be seen that within the same time range, the externally applied voltage required to achieve the highest degradation efficiency under different electrode spacing is different. As an option, the voltage can be determined according to the embroidery electrode spacing. Reasonable choice.
实施例7Example 7
同实施例1，区别在于，步骤（1）中刺绣的叉指电极整体大小为40 cm*40 cm，叉指电极个数可按比例增加。It is the same as Embodiment 1, except that the overall size of the interdigitated electrodes embroidered in step (1) is 40 cm*40 cm, and the number of interdigitated electrodes can be increased proportionally.
实施例8Example 8
同实施例1，区别在于，步骤（2）中选取g-C3N4作为光触媒材料。Same as Example 1, except that gC3 N4 is selected as the photocatalyst material in step (2).
实施例9Example 9
同实施例1，区别在于，步骤（3）中采用浸涂的方法将光催化材料涂覆在刺绣了叉指电极的柔性电子织物上，与直流电源连接的柔性电子织端不能浸涂到二氧化钛混合溶液，否则会影响导电性从而降低光电催化效果，可以直接将刺绣了叉指电极的柔性电子织物两端略微抬高至露出液面，重复浸涂次数为3次。Same as Example 1, the difference is that in step (3), the photocatalytic material is coated on the flexible electronic fabric embroidered with interdigital electrodes by dip coating. The end of the flexible electronic fabric connected to the DC power supply cannot be dip-coated onto the titanium dioxide. Mix the solution, otherwise it will affect the conductivity and reduce the photoelectrocatalytic effect. You can directly slightly raise both ends of the flexible electronic fabric embroidered with interdigital electrodes to expose the liquid surface, and repeat dipping three times.
实施例10Example 10
同实施例1，区别在于，所述步骤（3）中喷涂次数为1次，也可以为2次、4次、5次。It is the same as Embodiment 1, but the difference is that the number of spraying times in step (3) is 1 time, and can also be 2 times, 4 times, or 5 times.
对实施例1和实施例10制备的刺绣的电极间距为5 mm的直线型叉指电极结构顶部涂覆不同次数的光催化材料层在3个小时内施加30 V电压光电催化降解40 ppm的去除效率进行性能测试，如附图6所示，可以看出涂覆次数过少或者过多都不能达到最优的降解效果，作为优选，光催化材料涂覆次数为3次。The top of the embroidered linear interdigital electrode structure with an electrode spacing of 5 mm prepared in Examples 1 and 10 was coated with photocatalytic material layers for different times for 3 hours. A voltage of 30 V was applied within 3 hours to remove 40 ppm of photoelectrocatalytic degradation. Efficiency performance test, as shown in Figure 6, it can be seen that the optimal degradation effect cannot be achieved if the number of coatings is too few or too many. As a preferred method, the number of coatings of the photocatalytic material is 3 times.
实施例11Example 11
同实施例1，区别在于，所述步骤（1）中降解不同浓度的甲醛，为5~40 ppm。The same as Example 1, except that different concentrations of formaldehyde are degraded in step (1), ranging from 5 to 40 ppm.
对实施例1刺绣的电极间距为5 mm的直线型叉指电极结构在涂覆3次光催化层下施加30 V电压光电催化完全降解不同浓度甲醛所需时间，如附图7所示，可以看出随着浓度的增加，甲醛完全降解所需时间也随之增加。For the linear interdigitated electrode structure embroidered in Example 1 with an electrode spacing of 5 mm, the time required for photoelectrocatalysis to completely degrade formaldehyde of different concentrations by applying a voltage of 30 V and coating the photocatalytic layer three times is shown in Figure 7. It can be seen that as the concentration increases, the time required for complete degradation of formaldehyde also increases.
| Application Number | Priority Date | Filing Date | Title |
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| CN202310909953.9ACN116988236A (en) | 2023-07-24 | 2023-07-24 | Interdigital electrode structure flexible electronic fabric based on photoelectrocatalysis degradation of volatile organic pollutants, and preparation method and application thereof |
| PCT/CN2023/140788WO2025020443A1 (en) | 2023-07-24 | 2023-12-21 | Flexible electronic fabric of interdigital electrode structure for degrading volatile organic pollutants on basis of photoelectrocatalysis, preparation method therefor and use thereof |
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| CN202310909953.9ACN116988236A (en) | 2023-07-24 | 2023-07-24 | Interdigital electrode structure flexible electronic fabric based on photoelectrocatalysis degradation of volatile organic pollutants, and preparation method and application thereof |
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| WO (1) | WO2025020443A1 (en) |
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| WO2025020443A1 (en)* | 2023-07-24 | 2025-01-30 | 东南大学 | Flexible electronic fabric of interdigital electrode structure for degrading volatile organic pollutants on basis of photoelectrocatalysis, preparation method therefor and use thereof |
| WO2025129759A1 (en)* | 2023-12-22 | 2025-06-26 | 东南大学 | Dense electrode fabric having multi-layer micro-nano structure, manufacturing method therefor, and electrochemical device |
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