CN113385169A - 一种高效降解有机污染物的新型压电光催化剂、制备方法及应用 - Google Patents
一种高效降解有机污染物的新型压电光催化剂、制备方法及应用 Download PDFInfo
- Publication number
- CN113385169A CN113385169A CN202110684928.6A CN202110684928A CN113385169A CN 113385169 A CN113385169 A CN 113385169A CN 202110684928 A CN202110684928 A CN 202110684928A CN 113385169 A CN113385169 A CN 113385169A
- Authority
- CN
- China
- Prior art keywords
- preparation
- batio
- organic pollutants
- solution
- degrading organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 16
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 230000000593 degrading effect Effects 0.000 title claims abstract description 13
- 229910002113 barium titanate Inorganic materials 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 6
- 231100000719 pollutant Toxicity 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- 230000001699 photocatalysis Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000015556 catabolic process Effects 0.000 claims description 10
- 238000006731 degradation reaction Methods 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- QWMFKVNJIYNWII-UHFFFAOYSA-N 5-bromo-2-(2,5-dimethylpyrrol-1-yl)pyridine Chemical compound CC1=CC=C(C)N1C1=CC=C(Br)C=N1 QWMFKVNJIYNWII-UHFFFAOYSA-N 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 5
- FBXVOTBTGXARNA-UHFFFAOYSA-N bismuth;trinitrate;pentahydrate Chemical compound O.O.O.O.O.[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FBXVOTBTGXARNA-UHFFFAOYSA-N 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 abstract description 16
- 229940043267 rhodamine b Drugs 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 12
- 238000000746 purification Methods 0.000 abstract description 6
- 239000007791 liquid phase Substances 0.000 abstract description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 2
- 241000270722 Crocodylidae Species 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 abstract 1
- 239000011943 nanocatalyst Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 14
- 239000000975 dye Substances 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 5
- 238000006555 catalytic reaction Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 238000004043 dyeing Methods 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- VQHHOXOLUXRQFQ-UHFFFAOYSA-L dipotassium;4,5,6,7-tetrachloro-2',4',5',7'-tetraiodo-3-oxospiro[2-benzofuran-1,9'-xanthene]-3',6'-diolate Chemical compound [K+].[K+].O1C(=O)C(C(=C(Cl)C(Cl)=C2Cl)Cl)=C2C21C1=CC(I)=C([O-])C(I)=C1OC1=C(I)C([O-])=C(I)C=C21 VQHHOXOLUXRQFQ-UHFFFAOYSA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
- C02F2001/46138—Electrodes comprising a substrate and a coating
- C02F2001/46142—Catalytic coating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- Catalysts (AREA)
Abstract
本发明提供了一种高效降解有机污染物的新型压电光催化剂、制备方法及应用，属于液相污染物净化处理、新型材料制备技术领域。在不锈钢网上用硅溶胶固定涂覆纳米催化剂BaTiO3/Bi2WO6，作为导电阳极，阴极是碳棒，两极经鳄鱼夹及导线和外电阻构成闭合电路回路，可见光源由灯提供，构成的系统可实现对典型有机污染物罗丹明B的高效去除。
Description
技术领域
本发明属于液相污染物净化处理、新型材料制备技术领域。涉及BaTiO3/Bi2WO6新型纳米压电光催化剂，并用新型催化剂实现了有机污染物的高效降解，且效果稳定，为进一步开发其他压电光催化剂提供了参考，为有机染料废水的净化处理提供科学基础。
背景技术
罗丹明B(Rhodamine B)是一种典型的有机染料，又称若丹明B、玫瑰红B、玫瑰精B、碱性玫瑰精，分子式为C28H31ClN2O3，是一种具有鲜桃红色的人工合成的染料。我国是染料制造和消费的主力军，印染废水的排放量也很大，经统计，由于染色过程效率低下，每年的年染料产量有超过3％(高达20万吨)通过染色和处理操作释放到自然环境中。首先，染料废水会降低水体透明度、消耗大量的氧气、影响水体自净能力、并影响生物生长，对水体造成不同程度的污染。其次，很多染料还具有致癌和致畸性，威胁饮用水源，对人体危害很大。
目前，去除水中有机污染物的各种技术包括吸附法、生物法、光催化氧化法和膜分离等。但是这些技术都有一定局限性，例如吸附法和膜分离法成本高、难再生、某些有机染料在再生之前易产生二次污染，生物降解法和光催化处理效率低、过程缓慢等。
压电光催化技术继承了光催化材料的化学反应优势，结合了压电材料的压电效应，成为当前水污染治理领域的研究热点之一。压电光催化材料通过改变机械能或超声波能量触发压电效应而产生交变电场，促进光催化材料的光生载流子的分离，抑制电子和空穴的复合，从而提高复合材料的光催化效率。钙钛矿是一种典型的具有钙钛矿结构的压电催化材料，广泛用于压电催化剂的研制。钙钛矿结构的BaTiO3具有良好的压电系数(D33)～200pc/n和较高的结构稳定性，是目前研究最多的材料，具有广阔的应用前景。但是目前将BaTiO3/Bi2WO6压电光催化材料应用于去除有机染料废水的报道还未出现。
本申请以BaTiO3/Bi2WO6为压电光催化剂，选择典型的有机污染物罗丹明B作为目标污染物，以此催化剂快速降解去除罗丹明B。
发明内容
本发明制备了一种去除有机污染物效率高、制备过程简单、稳定性高的新型半导体催化材料。BaTiO3/Bi2WO6对罗丹明B处理净化效率高、能耗低。
本发明的技术方案：
一种高效降解有机污染物的新型压电光催化剂的制备方法，步骤如下：
(1)将Ba(OH)2、钛酸四丁酯溶于去离子水中，其中Ba(OH)2与钛酸四丁酯的摩尔比为1:1，然后用NaOH溶液将pH调节为13，接着搅拌均匀后将溶液转入聚四氟乙烯内衬高压釜中，反应结束后，用乙醇和去离子水洗涤多次后烘干得到纯BaTiO3粉末。
(2)五水合硝酸铋溶于乙二醇后再加入二水钨酸钠，完全溶解得到混合溶液，将已溶于乙醇并超声至分散均匀的BaTiO3溶液加入到上述混合溶液中并继续搅拌，五水合硝酸铋、二水钨酸钠、BaTiO3摩尔比是2:1:0.25～1，接着将溶液转入聚四氟乙烯内衬高压釜中进行水热反应。反应后产物用乙醇和去离子水洗涤，干燥得到最终的催化剂BaTiO3/Bi2WO6。
进一步地，所述步骤(1)中，聚四氟乙烯内衬高压釜反应温度为180～200℃，反应时间为20～24h；烘干温度为60℃-80℃，烘干时间为10～12h。
进一步地，所述步骤(2)中，水热反应温度为100℃～160℃，水热反应时间为8～10h。
进一步地，所述步骤(2)中，干燥温度为60℃-80℃，干燥时间为10～12h。
一种高效降解有机污染物的新型压电光催化剂的应用，上述的制备方法制得的BaTiO3/Bi2WO6应用在压电催化耦合光电催化系统。
压电催化耦合光电催化系统的构建：用硅溶胶将BaTiO3/Bi2WO6固定在不锈钢网表面作为系统阳极，阴极使用碳棒，系统内部为污染物和电解质，外电路由导线和外电阻连接阴阳两极构成闭合回路。
压电催化耦合光电催化系统的所需的机械能由曝气提供。机械能可由但不仅限于由曝气提供，在以上所述的压电催化耦合光电催化系统基础上进行的任何形式的变动或衍生都应属于本专利的保护范围内。
本发明的有益效果：该反应系统集成了电催化、光催化以及压电催化，降解去除罗丹明B：新型纳米压电光催化剂可以对罗丹明B进行快速吸附和催化降解，该系统在催化体系中，净化效果显著，而且稳定性好，为今后催化降解有机染料提供了科学依据。
附图说明：
图1是光电催化体系(PFC)、压电耦合电催化体系(PZ-FC)、压电耦合光电催化体系(PZ-PFC)三种不同体系下罗丹明B的去除率对比图。图中，横坐标表示时间(min)，纵坐标表示降解率(Ct/C0)。
图2是不同外电阻下体系降解罗丹明B效果对比图。图中，横坐标表示时间(min)，纵坐标表示降解率(Ct/C0)。
图3(1)是不同比例掺杂得到的降解效果动力学拟合图。
图3(2)是不同比例掺杂得到的速率常数K值图。
图4是多次重复利用去除效果图。图中，横坐标表示时间(min)，纵坐标表示降解率(Ct/C0)。
具体实施方式
以下结合技术方案和附图，进一步说明本发明的具体实施方式：
实施例1
首先将0.15773gBa(OH)2、0.17016g钛酸四丁酯溶于25ml去离子水中，然后用1MNaOH将溶液pH调节为13，接着搅拌30min后将溶液转入聚四氟乙烯内衬高压釜中，200℃反应24h后，用乙醇和去离子水洗涤多次后60℃烘干12h得到纯BaTiO3粉末，将0.46638gBaTiO3粉末溶于40ml乙醇中超声6h。1.8721g五水合硝酸铋溶于40ml乙二醇后再加入0.63643g二水钨酸钠，完全溶解得到混合溶液，将超声6h的溶液加入到上述混合溶液中并继续搅拌，接着将溶液转入聚四氟乙烯内衬高压釜中，在160℃下水热反应10h。反应后产物用乙醇和去离子水洗涤3次，60℃干燥12h得到最终的催化剂BaTiO3/Bi2WO6。
实施例2
将BaTiO3/Bi2WO6用硅溶胶涂覆到不锈钢网作为系统的阳极，阴极使用碳棒，阴阳两极放在同一反应容器中，反应容器内装有混合了一定量电解质的罗丹明B溶液，浓度为20mg/L。外电路由鳄鱼夹、导线和电阻形成闭合的回路，光源是由20～50W的普通灯泡提供。
实施例3：不同体系下去除罗丹明B
将阴阳电极和混有电解质的罗丹明B污染物溶液加入到反应器中，先暗反应30min，之后根据各个体系的特点设置相应的反应条件，每隔10min取样一次进行测量。反应时长60min。
光电催化体系：加光照，外电路用导线和外电阻连通，不曝气；压电耦合电催化体系：加曝气，外电路用导线和外电阻连通，不加光照；压电耦合光电催化体系：加光照，加曝气，外电路用导线和外电阻连通。
图1中，PZ-PFC效果最好，50min就可达到98.68％，远比PFC和P-EC的处理效果好。证明了压电催化和光电催化具有良好的耦合作用。
实施例4：不同外电阻下体系降解罗丹明B
实验同实施例3，将外电阻分别设为10Ω、100Ω和1000Ω。图2结果显示当外电阻为100Ω时的罗丹明B去除率最高，50min达到98.68％。
实施例5：不同掺杂比例对降解的影响
实验同实施例3，通过调节BaTiO3与Bi2WO6之间的掺杂摩尔比探究其对降解效果的影响。图中H0、H5、H11、H12、H14、H21、H41分别代表：纯BaTiO3、纯Bi2WO6、BaTiO3/Bi2WO6(1:1)、BaTiO3/Bi2WO6(1:2)、BaTiO3/Bi2WO6(1:4)、BaTiO3/Bi2WO6(2:1)、BaTiO3/Bi2WO6(4:1)。从图3(1)和图3(2)中可以看到当掺杂摩尔比为1:1时速率常数最大，且分别是纯BaTiO3和纯Bi2WO6的7.13和5.26倍。
实施例6：压电光催化剂的稳定性探究
实验同实施例3。每次实验结束后将催化阳极在60℃下烘干2h后用于下一次实验。图3显示4次重复利用后该催化剂活性基本不变，第5次活性稍有下降，表明该催化剂具有良好的稳定性。
Claims (9)
1.一种高效降解有机污染物的新型压电光催化剂的制备方法，其特征在于，步骤如下：
(1)将Ba(OH)2、钛酸四丁酯溶于去离子水中，其中Ba(OH)2与钛酸四丁酯的摩尔比为1:1，然后用NaOH溶液将pH调节为13，接着搅拌均匀后将溶液转入聚四氟乙烯内衬高压釜中，反应结束后，用乙醇和去离子水洗涤多次后烘干得到纯BaTiO3粉末；
(2)五水合硝酸铋溶于乙二醇后再加入二水钨酸钠，完全溶解得到混合溶液，将已溶于乙醇并超声至分散均匀的BaTiO3溶液加入到上述混合溶液中并继续搅拌，五水合硝酸铋、二水钨酸钠、BaTiO3摩尔比是2:1:0.25～1，接着将溶液转入聚四氟乙烯内衬高压釜中进行水热反应；反应后产物用乙醇和去离子水洗涤，干燥得到最终的催化剂BaTiO3/Bi2WO6。
2.根据权利要求1所述的一种高效降解有机污染物的新型压电光催化剂的制备方法，其特征在于，所述步骤(1)中，聚四氟乙烯内衬高压釜反应温度为180～200℃，反应时间为20～24h；所述步骤(1)中，烘干温度为60℃-80℃，烘干时间为10～12h。
3.根据权利要求1或2所述的一种高效降解有机污染物的新型压电光催化剂的制备方法，其特征在于，所述步骤(2)中，水热反应温度为100℃～160℃，水热反应时间为8～10h。
4.根据权利要求1或2所述的一种高效降解有机污染物的新型压电光催化剂的制备方法，其特征在于，所述步骤(2)中，干燥温度为60℃-80℃，干燥时间为10～12h。
5.根据权利要求3所述的一种高效降解有机污染物的新型压电光催化剂的制备方法，其特征在于，所述步骤(2)中，干燥温度为60℃-80℃，干燥时间为10～12h。
6.一种高效降解有机污染物的新型压电光催化剂，其特征在于，所述的新型压电光催化剂是由权利要求1-8任一所述的制备方法制得的。
7.一种高效降解有机污染物的新型压电光催化剂的应用，其特征在于，权利要求1-8任一所述的制备方法制得的BaTiO3/Bi2WO6应用在压电催化耦合光电催化系统。
8.根据权利要求7所述的应用，其特征在于，压电催化耦合光电催化系统的构建：用硅溶胶将BaTiO3/Bi2WO6固定在不锈钢网表面作为系统阳极，阴极使用碳棒，系统内部为污染物和电解质，外电路由导线和外电阻连接阴阳两极构成闭合回路。
9.根据权利要求7或8所述的应用，其特征在于，压电催化耦合光电催化系统的所需的机械能由曝气提供。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684928.6A CN113385169A (zh) | 2021-06-21 | 2021-06-21 | 一种高效降解有机污染物的新型压电光催化剂、制备方法及应用 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684928.6A CN113385169A (zh) | 2021-06-21 | 2021-06-21 | 一种高效降解有机污染物的新型压电光催化剂、制备方法及应用 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113385169A true CN113385169A (zh) | 2021-09-14 |
Family
ID=77623130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110684928.6A Pending CN113385169A (zh) | 2021-06-21 | 2021-06-21 | 一种高效降解有机污染物的新型压电光催化剂、制备方法及应用 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113385169A (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634242A (zh) * | 2022-03-29 | 2022-06-17 | 河海大学 | 一种基于压电催化的水体污染物降解曝气一体化装置 |
| CN114849744A (zh) * | 2022-05-20 | 2022-08-05 | 陕西科技大学 | 一种BaTiO3/BiOIO3复合材料及其制备方法和应用 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597728A (zh) * | 2016-02-25 | 2016-05-25 | 电子科技大学 | 二氧化钛/钛酸铋超声强化型光催化剂及其制备方法 |
| WO2018040685A1 (zh) * | 2016-09-05 | 2018-03-08 | 中国科学院金属研究所 | 选择性刻蚀铁电基光催化材料以定向构筑异质结构的方法 |
| CN109529807A (zh) * | 2018-12-23 | 2019-03-29 | 上海师范大学 | 增强光催化降解反应的压电-光催化剂及其制法和应用 |
| CN110841668A (zh) * | 2019-11-08 | 2020-02-28 | 苏州大学 | 碘氧化铋/氧化锌复合材料及其制备方法与在压电-光催化去除有机污染物中的应用 |
-
2021
- 2021-06-21 CN CN202110684928.6A patent/CN113385169A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597728A (zh) * | 2016-02-25 | 2016-05-25 | 电子科技大学 | 二氧化钛/钛酸铋超声强化型光催化剂及其制备方法 |
| WO2018040685A1 (zh) * | 2016-09-05 | 2018-03-08 | 中国科学院金属研究所 | 选择性刻蚀铁电基光催化材料以定向构筑异质结构的方法 |
| CN109529807A (zh) * | 2018-12-23 | 2019-03-29 | 上海师范大学 | 增强光催化降解反应的压电-光催化剂及其制法和应用 |
| CN110841668A (zh) * | 2019-11-08 | 2020-02-28 | 苏州大学 | 碘氧化铋/氧化锌复合材料及其制备方法与在压电-光催化去除有机污染物中的应用 |
Non-Patent Citations (6)
| Title |
|---|
| TINGTING YU等: "Piezoelectricity catalyzed ROS generation of MoS2 only by aeration for wastewater purification", 《RESEARCH ON CHEMICAL INTERMEDIATES》 * |
| YANPING WANG等: "Photocatalytic purification of simulated dye wastewater in different pH environments by using BaTiO3/Bi2WO6 heterojunction photocatalysts", 《OPTICAL MATERIALS》 * |
| 彭小芹等: "《无机材料性能学基础》", 29 February 2020, 重庆大学出版社 * |
| 石朋: "含g-C3N4/Bi2WO6电极光电催化降解水中污染物", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 * |
| 郭琪瑶等: "Bi2WO6-SrTiO3异质结的制备及可见光催化性能研究", 《广东化工》 * |
| 陈曦等: "Bi2O3/Bi2WO6异质结光催化剂的制备及其活性", 《石油学报（石油加工）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634242A (zh) * | 2022-03-29 | 2022-06-17 | 河海大学 | 一种基于压电催化的水体污染物降解曝气一体化装置 |
| CN114849744A (zh) * | 2022-05-20 | 2022-08-05 | 陕西科技大学 | 一种BaTiO3/BiOIO3复合材料及其制备方法和应用 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110180548B (zh) | 一维氧化铟中空纳米管/二维铁酸锌纳米片异质结复合材料及其在去除水体污染物中的应用 | |
| Zhao et al. | Enhanced organic pollutants degradation and electricity production simultaneously via strengthening the radicals reaction in a novel Fenton-photocatalytic fuel cell system | |
| CN108273492B (zh) | 一种氧化铋/四氧化二铋异质结光催化剂及其制法和用途 | |
| CN106902810A (zh) | 碳量子点修饰的单层钨酸铋纳米片复合光催化剂及其制备方法和应用 | |
| CN107952464B (zh) | 一种新型光催化材料及双光催化电极自偏压污染控制系统 | |
| CN109201065A (zh) | 一种泡沫镍复合材料及其制备方法与在光电催化去除水体污染物中的应用 | |
| CN101745402B (zh) | 高比表面基底负载Bi2WO6光催化膜、方法及应用 | |
| CN101653728A (zh) | 铁酸锌/二氧化钛纳米复合可见光光催化剂的制备方法及其应用 | |
| CN113385169A (zh) | 一种高效降解有机污染物的新型压电光催化剂、制备方法及应用 | |
| CN113000056A (zh) | 一种基于MXene掺杂的复合材料及其制备方法 | |
| CN112108150A (zh) | 基于磁性Fe3O4修饰的玉米芯生物质碳点复合Bi2WO6光催化剂的制备方法及用途 | |
| CN108855105B (zh) | 铁酸锌-铁酸钴异质结复合催化剂及其制备方法和应用 | |
| CN112108141A (zh) | 一种氧化锌微米棒压电催化剂及其制备方法与应用 | |
| CN111875031B (zh) | 一种光催化电极耦合反硝化微生物燃料电池同步脱硝及降解有机污染物的方法 | |
| CN103212447B (zh) | 一种稀土金属离子印迹负载型复合光催化剂的制备方法 | |
| CN113617366A (zh) | 一种用于降解废水有机污染物的材料 | |
| Kang et al. | Strategy to enhance photocatalytic performance of heterojunctional composite by dimensionality modulating: Insights into the scheme in interfacial charge migration and mass transfer | |
| CN107754837B (zh) | 单层氮化碳纳米片和铋等离子体联合修饰型氧化铋基电极及其制备和应用 | |
| CN108417873A (zh) | 一种自偏压微生物耦合光电催化燃料电池污染控制系统及电极制备方法 | |
| CN113149144A (zh) | 一种海胆状复合阴极材料的制备及类芬顿降解方法 | |
| CN110606526A (zh) | 具有高效可见光响应的三维TiO2光电极及其构筑和应用 | |
| CN112916043B (zh) | 一种具有吸附-催化降解染料功能的聚苯胺/硫化铜复合光催化剂及其制备方法和应用 | |
| CN110586060B (zh) | 一种具有氧化-还原性能的复合光催化剂及其制备方法 | |
| Chen et al. | Critical role of Photo-electrode with Ce-g-C3N4 in multi-stage microbial fuel cells cascade reactor treating diluted hyper-saline industrial wastewater rich in amines | |
| CN115382555B (zh) | 一种Bi2O3/泡沫Ni及其微波辐射制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210914 |
|
| RJ01 | Rejection of invention patent application after publication |