Journal of Inorganic Materials ›› 2022, Vol. 37 ›› Issue (1): 3-14.DOI: 10.15541/jim20210368

Special Issue: 【能源环境】CO2绿色转换 2022年度中国知网高下载论文

• TOPICAL SECTION: Green Conversion of CO2 (Contributing Editor: OUYANG Shuxin, WANG Wenzhong) • Previous Articles     Next Articles

Recent Progress on Photocatalytic CO2 Reduction with Ultrathin Nanostructures

GAO Wa1(), XIONG Yujie2, WU Congping1,3,4(), ZHOU Yong1,3(), ZOU Zhigang1,3,4   

  1. 1. School of Physics, Nanjing University, Nanjing 210093, China
    2. School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
    3. Kunshan Institute of Innovation, Kunshan 215300, China
    4. Jiangsu Yanchang Sunlaite Group, Kunshan 215300, China
  • Received:2021-06-10 Revised:2021-07-30 Published:2022-01-20 Online:2021-07-20
  • Contact: ZHOU Yong, professor. E-mail: zhouyong1999@nju.edu.cn; WU Congping, senior engineer. E-mail: cpwu@nju.edu.cn
  • About author:GAO Wa (1994-), female, PhD candidate. E-mail: dz1622007@smail.nju.edu.cn
  • Supported by:
    National Key Research and Development Program of the Ministry of Science and Technology of China(2018YFE0208500);National Natural Science Foundation of China(51972164);National Natural Science Foundation of China(21972065);National Natural Science Foundation of China(21773114);Foshan Xianhu Experiment Project of Guangdong Laboratory of Advanced Energy Science and Technology(XHD2020-002);Hefei National Laboratory for Physical Sciences at the Microscale(KF2020006)

Abstract:

Since the beginning of the 21st century, energy shortage and environmental pollution have been the major challenges faced by human beings. Photocatalytic carbon dioxide (CO2) reduction is one of the promising strategies to solve the energy crisis and promote the carbon cycle, in which semiconductor captures solar energy to obtain hydrocarbon fuel. However, the low activity and poor selectivity of the products greatly limit the practical application of this technology. Thus, it is of great significance to regulate product selectivity, improve photocatalytic efficiency, and deeply understand the mechanism of CO2 reduction reaction. In recent years, ultrathin materials have attracted extensive attention from researchers due to their high specific surface area, abundant unsaturated coordination surface atoms, shortened charge migration path from inside to surface, and tailorable energy band structure, and have achieved promising results in the field of photocatalytic CO2 reduction. In this paper, the reaction mechanism of photocatalytic CO2 reduction is firstly summarized. Next, the research results of promoting electron hole separation and regulating charge transport path of ultrathin nanostructures by constructing heterostructures, designing Z-scheme systems, introducing co-catalysts, and defect engineering are introduced. Finally, the prospect and challenge of improving the efficiency of photocatalytic CO2 reduction and optimizing the product selectivity are pointed out.

Key words: photocatalytic CO2 reduction, ultrathin heterostructures, cocatalysts, reaction mechanism, review

CLC Number: