半导体纳米复合材料的制备及其光电催化CO2还原

doi:10.3866/PKU.DXHX201912003

University Chemistry ›› 2020, Vol. 35 ›› Issue (4): 66-71.doi: 10.3866/PKU.DXHX201912003

Special Issue: 全国大学生化学实验创新设计竞赛

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Preparation of Semiconductor Nanocomposites and Reduction of CO₂ by Photoelectrocatalysis

Ningran Wu, Enlin Tian, Chuangyuan Zhao, Yongwen Shen(), Xinping Hui(), Huanwang Jing()

National Demonstration Center for Experimental Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Received:2019-12-02 Accepted:2019-12-16 Published:2020-02-11
Contact: Yongwen Shen,Xinping Hui,Huanwang Jing E-mail:sywlxy@lzu.edu.cn;huixp@lzu.edu.cn;hwjing@lzu.edu.cn

Abstract

Abstract:

This innovative comprehensive experiment mimics the photosynthesis of natural plants and designs a novel photoelectrocatalytic cell of 3D-ZnO/Ni BiVO₄/FTO, in which, the ZnO-Ni photocathode prepared by electrodeposition and the BiVO₄/FTO electrode were used as photocathode and photoanode, respectively. In 0.1 mol·L^-1 KHCO₃ aqueous solution, the photoelectrcatalytic CO₂ reduction was carried out under -0.6 Volts powered by Si-solar cell in the presence of 1 mmol·L^-1 Eosin Y, generating ethanol, acetate acid, and methanol in a total yield of 22.5 μmol·L^-1·h^-1·cm^-2. This process can store solar energy to chemical energy and lessen CO₂ in the atmosphere. The students might better understand the principle of green chemistry and the Calvin cycle of plant.

Key words: Nanosemiconductor composite, Photoelectrocatalysis, Zinc oxide, Artificial photosynthesis

MSC2000:

Ningran Wu, Enlin Tian, Chuangyuan Zhao, Yongwen Shen, Xinping Hui, Huanwang Jing. Preparation of Semiconductor Nanocomposites and Reduction of CO₂ by Photoelectrocatalysis[J].University Chemistry, 2020, 35(4): 66-71.

Figures/Tables 8

References 9

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Preparation of Semiconductor Nanocomposites and Reduction of CO₂ by Photoelectrocatalysis

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