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Photoelectric catalytic reactor

A photoelectric catalysis and reactor technology, which is applied in chemical instruments and methods, water treatment of special compounds, light water/sewage treatment, etc., can solve the problems of low photocatalytic efficiency and high operating cost, and achieve photocatalytic efficiency improvement, photocatalytic Performance improvement, effect of improving photocatalytic performance

Pending Publication Date: 2022-01-07
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the problems of low photocatalytic efficiency and high operating cost in the prior art, one of the objectives of the present invention is to provide a photoelectric catalytic reactor, and the second objective of the present invention is to provide the application of this photoelectric catalytic reactor

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Examples

Experimental program
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Effect test

Embodiment 1

[0062] TiO in this example 2 / C 3 N 4 / CQDs photoelectrode preparation method is as follows:

[0063] (1) TiO 2 / C 3 N 4 Electrode preparation: conductive glass FTO (7Ω / m 2 , diameter 34mm, thickness 2.2mm) with isopropanol: ultrapure water: acetone (volume ratio 1:1:1) for ultrasonic cleaning for 1h. Mix 40mL 36.5wt% concentrated hydrochloric acid with 40mL ultrapure water, then add 1.32mL tetrabutyl titanate and mix well, put the mixed solution and the conductive glass FTO after ultrasonic cleaning into the hydrothermal reaction kettle, the FTO conductive glass faces Above, take out the conductive glass after reacting at 150°C for 5 hours, rinse it and dry it naturally, put it into a 30mL ceramic crucible together with 2g of dicyandiamide, wherein the dipolycyanamide is at the bottom, the conductive glass is at the top, and the conductive face down. Then put it into a muffle furnace and heat it at 550°C for 3h to make TiO 2 / C 3 N 4 electrode.

[0064] (2) Dissol...

Embodiment 2

[0075] The preparation method of the air diffusion cathode of the present embodiment is as follows:

[0076] (1) Apply PDFE (polytetrafluoroethylene) on one side of the carbon cloth (4cm×8cm) with conductive carbon black to form a waterproof surface. The amount of PDFE applied is about 1mL. After drying, put it into the muffle furnace at 350°C , 10min, repeat 2 times to get waterproof carbon cloth;

[0077] (2) Add 0.09 g graphite into a 10 mL plastic centrifuge tube, then measure 100 μL deionized water, 800 μL 5wt% perfluorosulfonic acid solution, 400 μL isopropanol, and add 12 glass beads. Vortex for 5 min to mix well. The mixture is quickly applied to the other side of the waterproof carbon cloth (opposite to the waterproof surface), and left to dry for 24 hours to obtain an air diffusion cathode.

[0078] The TiO that embodiment 1 makes 2 / C 3 N 4 The / CQDs photoelectrode and the air diffusion cathode prepared in this example are connected to both sides of the plexigl...

Embodiment 3

[0082] The preparation method of the Fenton-like air diffusion cathode of the present embodiment is as follows:

[0083] (1) Apply PDFE (polytetrafluoroethylene) on one side of the carbon cloth (4cm×8cm) with conductive carbon black to form a waterproof surface. The amount of PDFE applied is about 1mL. After drying, put it into the muffle furnace at 350°C , 10min, repeat 2 times to get waterproof carbon cloth;

[0084] (2) Weigh 0.18g iron-manganese-copper ternary catalyst, the mass ratio of iron-manganese-copper is 3:1:8, add 0.09g graphite into a 10mL plastic centrifuge tube, then measure 100μL deionized water, 800μL 5wt% perfluorosulfur acid solution, 400 μL isopropanol, and add 12 glass beads. Vortex for 5 min to mix well. The mixture is quickly applied to the other side of the waterproof carbon cloth (opposite to the waterproof surface), and left to dry for 24 hours to obtain a Fenton-like air diffusion cathode.

[0085] The TiO that embodiment 1 makes 2 / C 3 N 4 Th...

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Abstract

The invention discloses a photoelectric catalytic reactor, which comprises a conductive anode and a conductive cathode, wherein the conductive anode comprises conductive glass, titanium dioxide, C3N4 and carbon quantum dots are loaded on the conductive glass, the conductive cathode comprises a conductive material and a catalyst, and the catalyst comprises at least one of carbon black, acetylene black, graphite, graphene, platinum, an iron-based catalyst, an iron-manganese binary catalyst and an iron-manganese-copper ternary catalyst. According to the invention, a titanium dioxide nanotube array is taken as a bottom, and a conductive anode doped with C3N4 and carbon quantum dots is adopted, so that the energy band gap of titanium dioxide is reduced; the visible light response and the light efficiency of the photoelectric catalytic reactor are improved, and the visible light response is enhanced; and the specific surface area of the used cathode is larger than that of a common platinum foil or platinum wire cathode, so that the photoelectron transfer efficiency is improved, the recombination rate of photo-induced electron-hole pairs is reduced, and the overall photoelectrocatalysis efficiency is improved.

Description

technical field [0001] The invention belongs to the field of photoelectric materials, in particular to a photoelectric catalytic reactor. Background technique [0002] With the continuous growth of population, agricultural production, and industrial volume in human society, and the development of high-demand lifestyles, environmental pollution and energy crisis are two major problems facing the development of human society. As a kind of waste water recycling, photoelectric catalysis technology, especially photocatalytic fuel cell technology, uses light as the driving force and can make full use of the chemical energy stored in organic compounds in waste water, achieving the purpose of both treating sewage and avoiding energy waste. , is one of the effective means to solve environmental problems and energy crises. [0003] In recent years, self-driven photocatalytic systems have shown great advantages in reducing the recombination rate of photogenerated hole-electron pairs. ...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/461C02F101/30
CPCC02F1/30C02F1/46104C02F1/46109C02F2305/10C02F2001/46138C02F1/66C02F2209/06C02F2101/30C02F2305/023C02F2305/04C02F1/4672C02F2101/38C02F2101/34
Inventor 马新培卢耀斌栾天罡
Owner GUANGDONG UNIV OF TECH
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