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Preparation method of efficient vanadium molybdenum bismuth photoanode with reducing-state surface

A technology of bismuth vanadium molybdate and photoanode, which is applied in electrodes, liquid chemical plating, electrolytic inorganic material coating, etc., can solve the problems of increasing the preparation price and complexity, achieve strong practical value, reduce the preparation cost, and have a reasonable design. Effect

Inactive Publication Date: 2018-04-13
QINGDAO UNIV
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Problems solved by technology

Although these methods have achieved good results, there are also some problems in these methods, such as the need for the addition of precious metals, or the processing of complicated processes, thereby increasing its preparation price

Method used

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  • Preparation method of efficient vanadium molybdenum bismuth photoanode with reducing-state surface
  • Preparation method of efficient vanadium molybdenum bismuth photoanode with reducing-state surface
  • Preparation method of efficient vanadium molybdenum bismuth photoanode with reducing-state surface

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Embodiment

[0032] refer to Figure 1-6 , a method for preparing a high-efficiency bismuth vanadium molybdate photoanode in a reduced surface state, comprising the following steps:

[0033] S1: Prepare raw materials and equipment: Bi(NO 3 ) 3 ·5H 2 O, KI solution, dilute HNO 3 , p-p-benzoquinone, absolute ethanol, vanadium acetylacetonate, dimethyl sulfoxide, molybdenum acetylacetonate solution, muffle furnace and NaOH solution;

[0034] S2: Take 2mmol of Bi(NO 3 ) 3 ·5H 2 O was stirred and mixed in 50 mL of KI solution with a concentration of 2 mol / L, and after being fully dissolved, dilute HNO was added to the obtained solution 3 Adjust the pH to acidic;

[0035] S3: Take 9 mmol of p-p-benzoquinone in S1 and dissolve it ultrasonically in 20 mL of absolute ethanol, mix the obtained solution with the solution prepared in S2, and stir until they are evenly mixed;

[0036] S4: Electrodeposit the solution obtained by mixing in S3 using a three-electrode system and a multi-potential ...

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Abstract

The invention discloses a preparation method of an efficient vanadium molybdenum bismuth photoanode with a reducing-state surface. The preparation method comprises the following steps: (S1) preparation of raw materials and equipment: Bi(NO3)3.5H2O, KI solution, dilute HNO3, p-benzoquinone, anhydrous ethanol, acetylacetone vanadium, dimethyl sulfoxide, acetylacetone molybdenum solution, a muffle and NaOH solution are prepared; (S2) 1-3 mmol of Bi(NO3)3.5H2O in the step (S1) is taken into 50 mL of KI solution with a concentration of 1-3 mol / L for mixing; and after dissolution, the dilute HNO3 isadded in the obtained solution to adjust PH to reach acidity; and (S3) 8-10 mmol of p-benzoquinone in the step (S1) is taken into 20 mL of anhydrous ethanol for ultrasonic dissolution; and the obtained solution is mixed with the solution prepared in the step (S2) uniformly. The preparation method greatly improves the performance of photoelectric chemical pyrolysis water of a BiMoVO photoanode generating hydrogen, and reduces the cost.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by photoelectrochemical cracking of water, in particular to a method for preparing a surface-reduced high-efficiency bismuth vanadium molybdate photoanode. Background technique [0002] Energy issues and environmental issues have become the common concerns of the whole world, and they are two key factors that threaten the survival and development of human beings. With the intensification of the problem, the development and utilization of sustainable clean energy has become an imperative trend. As a clean and pollution-free new energy conversion technology, the photoelectrochemical water splitting technology using solar energy is widely considered to have the potential to solve the problems of energy shortage and environmental pollution. [0003] In 1972, Fujishima first used TiO 2 The thin film is used as an electrode, and hydrogen is obtained by using light energy to split water. Si...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/04C25D9/04C23C18/12
CPCC23C18/1216C23C18/1295C25B1/04C25D9/04C25B1/55C25B11/077Y02E60/36
Inventor 王洪伟李卫兵
Owner QINGDAO UNIV
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