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CN-121976211-A - Preparation method of Ti-based photo-anode for photo-induced power generation and photo-induced power generation device thereof

CN121976211ACN 121976211 ACN121976211 ACN 121976211ACN-121976211-A

Abstract

The invention discloses a preparation method of a Ti-based photoanode for photoinduction power generation, which comprises the following steps of dissolving a titanium source in a solvent, then adopting a solvothermal method or a sol-gel method to synthesize a precursor on a foam nickel substrate by in-situ growth of titanium, finally calcining the precursor to prepare a TiO 2 @NF photoanode, regulating and controlling the Ti source, the solvent, a surfactant and reaction conditions to prepare the TiO 2 @NF photoanode with different shapes, and adopting a photoinduction power generation device to synthesize the photoanode on the surface of the foam nickel by in-situ growth of a TiO 2 catalyst, so that controllable preparation of TiO 2 with different shapes is realized, and the transparent sealing of a photoanode electrolytic cell is combined, thereby endowing the photoinduction power generation device with excellent energy conversion efficiency and photoresponsive performance. And the surface of the photoelectric anode can be loaded with waste plastics, so that the photoinduction power generation and the degradation of the waste plastics can be realized simultaneously. Compared with the traditional circular H-shaped electrolytic cell, the light-induced power generation device has the characteristics of full illumination utilization, high efficiency in charge transmission, compact structure and convenience in operation.

Inventors

  • LI CHUANQIANG
  • ZHU SHOUCHENG
  • Li Lunzhou
  • WANG JIAO
  • ZHU ZHIXIN

Assignees

  • 重庆交通大学

Dates

Publication Date
20260505
Application Date
20260114

Claims (10)

  1. 1. A preparation method of a Ti-based photoanode for photoinduction power generation is characterized by comprising the following steps: Dissolving a titanium source in a solvent, then adopting a solvothermal method or a sol-gel method to grow titanium in situ on a foam nickel substrate to synthesize a precursor, finally calcining the precursor to prepare the TiO 2 @NF photo-anode, and preparing the TiO 2 @NF photo-anode with different shapes by regulating and controlling the Ti source, the solvent, the surfactant and the reaction conditions.
  2. 2. The method for preparing a Ti-based photoanode for photoinduction power generation according to claim 1, wherein the tetragonal TiO 2 @NF photoanode is prepared by a solvothermal method, and the platy TiO 2 @NF photoanode is prepared by a sol-gel method.
  3. 3. The method for preparing a Ti-based photoanode for photoinduction power generation according to claim 2, wherein the preparation of the tetragonal TiO 2 @NF photoanode comprises the steps of dispersing a titanium source I in an aqueous solution of EDTA-Na, immersing a foam nickel substrate in the solution for hydrothermal reaction, and washing, drying and calcining the foam nickel substrate after the reaction is finished.
  4. 4. The method for preparing a Ti-based photoanode for photoinduction power generation according to claim 3, wherein the titanium source I is titanium isopropanol, the hydrothermal reaction temperature is 180-220 ℃, and the reaction time is 10-14h.
  5. 5. The preparation method of the Ti-based photoanode for photoinduction power generation according to claim 3, wherein the drying temperature is 90-110 ℃, the drying time is 1-2 hours, the calcining temperature is 450-550 ℃, and the calcining time is 45-75 minutes.
  6. 6. The method for preparing a Ti-based photoanode for photoinduction power generation according to claim 2, wherein the method for preparing the platy TiO 2 @NF photoanode comprises the following steps: Mixing absolute ethyl alcohol and a titanium source II with ultrasound to obtain a solution A, mixing absolute ethyl alcohol, glacial acetic acid and deionized water with ultrasound, adjusting the pH to be acidic to obtain a solution B, slowly dripping the solution B into the solution A, stirring uniformly until the mixed solution is in a sol state, then dipping a foam nickel substrate in the sol, drying, and finally calcining to obtain the flaky TiO 2 @NF photoanode.
  7. 7. The method for preparing a Ti-based photoanode for photoinduction power generation according to claim 6, wherein the titanium source II is tetrabutyl titanate, and the pH is adjusted to 2-4.
  8. 8. The method for preparing a Ti-based photoanode for photoinduction power generation according to claim 6, wherein the treatment of drying the foamed nickel substrate after impregnating the foamed nickel substrate with sol is repeated for 8-10 times at a drying temperature of 100-110 ℃, and the drying and calcining are performed at a calcining temperature of 450-550 ℃ and 45-75 min.
  9. 9. The photoinduction power generation device capable of degrading waste plastics is characterized by comprising a reaction electrode and an output terminal, wherein the output terminal outputs electric energy generated by the reaction electrode to electric equipment, the reaction electrode comprises the photoanode according to any one of claims 1-9, the surface of the photoanode is loaded with a waste plastic layer, and the photoanode is arranged in a transparent sealed electrolytic cell.
  10. 10. The photoinduction power generation device capable of degrading waste plastic according to claim 9, wherein the waste plastic is uniformly loaded on the surface of the photoanode and the pore structure of the photoanode in a manner of drying after dipping.

Description

Preparation method of Ti-based photo-anode for photo-induced power generation and photo-induced power generation device thereof Technical Field The invention relates to the field of organic nano photocatalytic fuel cells, in particular to a preparation method of a Ti-based photoanode for photoinduction power generation and a photoinduction power generation device thereof. Background Photo-induced power generation refers to a process of generating electric energy or chemical energy (such as hydrogen) by utilizing electron transition and chemical reaction inside a photo-energy inducing substance (typically a semiconductor material). It is widely used in the fields of photoelectrochemical cell, photoinduced electrodeposition, photocatalysis, etc. A photo-induced generator refers to a device that induces physical or chemical changes using light (photon energy) to produce charge separation and electrical energy output. The existing photoinduction generator has the common bottlenecks of insufficient light energy utilization, low energy conversion efficiency and the like, and is mainly derived from the problems that the device adopts a structure similar to a circular H-shaped electrolytic cell, the light shielding is serious, the ion transmission path is long, the matched photoelectric anode has uneven catalyst dispersion, insufficient active sites and the like, and the overall efficiency of the generator is limited. Therefore, the technical problems of insufficient light energy utilization and low energy conversion efficiency of the light-induced generator need to be solved. Disclosure of Invention Therefore, the preparation method of the Ti-based photoanode for photoinduction power generation and the photoinduction power generation device thereof can effectively improve the energy conversion efficiency and the long-term operation stability of the photoinduction power generator. The preparation method of the Ti-based photoanode for photoinduction power generation comprises the following steps: Dissolving a titanium source in a solvent, then adopting a solvothermal method or a sol-gel method to grow titanium in situ on a foam nickel substrate to synthesize a precursor, and finally calcining the precursor to obtain a TiO 2 @NF photoelectric anode, wherein the TiO 2 @NF photoelectric anode with different shapes can be prepared by regulating and controlling the Ti source, the solvent, the surfactant and the reaction conditions; Further, preparing a tetragonal TiO 2 @NF photoanode by a solvothermal method, and preparing a platy TiO 2 @NF photoanode by a sol-gel method; Further, the preparation of the tetragonal TiO 2 @NF photoanode comprises the following steps of dispersing a titanium source I in an EDTA-Na aqueous solution, immersing a foam nickel substrate in the solution for hydrothermal reaction, and washing, drying and calcining the foam nickel substrate after the reaction is finished; further, the titanium source I is titanium isopropanol, the hydrothermal reaction temperature is 180-220 ℃, and the reaction time is 10-14h; Further, the drying temperature is 90-110 ℃, the drying time is 1-2 hours, the calcining temperature is 450-550 ℃, and the calcining time is 45-75 minutes; Further, the preparation method of the flaky TiO 2 @NF photoanode comprises the following steps of: Mixing absolute ethyl alcohol with a titanium source II and performing ultrasonic treatment to obtain a solution A, mixing absolute ethyl alcohol, glacial acetic acid and deionized water and performing ultrasonic treatment to adjust the pH value to be acidic to obtain a solution B, slowly dripping the solution B into the solution A, uniformly stirring until the mixed solution is sol-like, dipping a foam nickel substrate in the sol, drying, and finally calcining to obtain the flaky TiO 2 @NF photoelectric anode; Further, the titanium source II is tetrabutyl titanate, and the pH is regulated to be 2-4; And further, repeatedly carrying out the treatment of dipping sol and drying on the foam nickel substrate, wherein the repetition time is 8-10 times, the drying temperature is 100-110 ℃, the calcining temperature after drying is 450-550 ℃, and the calcining time is 45-75 min. The invention also discloses a photoinduction power generation device capable of degrading waste plastics, which comprises a reaction electrode and an output terminal, wherein the output terminal outputs electric energy generated by the reaction electrode to electric equipment, the reaction electrode comprises the photoelectric anode, the surface of the photoelectric anode is loaded with the waste plastics, and the photoelectric anode is arranged in a transparent sealed electrolytic cell; Further, the waste plastics are loaded on the surface of the photoelectric anode and in the pore structure of the photoelectric anode in a drying mode after impregnation. The preparation method of the Ti-based photoanode for photoinduction power generation and the photoinduction power gene