Acta Phys. -Chim. Sin. ›› 2021, Vol. 37 ›› Issue (6): 2011033.doi: 10.3866/PKU.WHXB202011033

Special Issue: Design and Fabrication of Advanced Photocatalyst

• REVIEW • Previous Articles     Next Articles

Recent Progress of Perovskite Oxide in Emerging Photocatalysis Landscape: Water Splitting, CO2 Reduction, and N2 Fixation

Zejian Wang1,2, Jiajia Hong1,2, Sue-Faye Ng3, Wen Liu1,2, Junjie Huang1,2, Pengfei Chen1,2,4, Wee-Jun Ong2,3,5,*()   

  1. 1 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
    2 "Zhucai" Center of Innovation and Entrepreneurship, Wuhan University of Technology, Wuhan 430070, China
    3 School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor Darul Ehsan 43900, Malaysia
    4 State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
    5 College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, China
  • Received:2020-11-10 Accepted:2020-12-08 Published:2020-12-21
  • Contact: Wee-Jun Ong E-mail:weejun.ong@xmu.edu.my; ongweejun@gmail.com
  • About author:Wee-Jun Ong, Email: weejun.ong@xmu.edu.my; ongweejun@gmail.com
  • Supported by:
    the Research Fund from the "Zhucai" Center of Innovation and Entrepreneurship of Wuhan University of Technology, China(S2020001016);Xiamen University Malaysia Research Fund(XMUMRF/2019-C3/IENG/0013);Ministry of Higher Education (MOHE) Malaysia under the Fundamental Research Grant Scheme (FRGS)(FRGS/1/2020/TK0/XMU/02/1)

Abstract:

At present, more than 80% of the world's energy demand is fulfilled by the burning of fossil fuels, which has caused the production of a large amount of greenhouse gases, leading to global warming and damage to the environment. The high consumption of fossil fuels every year causes the energy crisis to become increasingly serious. Finding a sustainable and pollution-free energy source is therefore essential. Among all forms of energy sources, solar energy is preferred because of its cleanliness and inexhaustible availability. The energy provided by one year of sunlight is more than 100 times the total energy in known fossil fuel reserves worldwide; however, the extent of solar energy currently used by mankind each year is minute; thus developments in solar energy are imperative. To address the urgent need for a renewable energy supply and to solve environmental problems, a variety of technologies in the field of photocatalysis have been developed. Photocatalytic technology has attracted significant attention because of its superior ability to convert clean solar energy into chemical fuels. Among the photocatalytic materials emerging in an endless stream, perovskite oxide, with the general formula of ABO3, has great potential in the fields of solar cells and photocatalysis as each site can be replaced by a variety of cations. Furthermore, owing to its unique properties such as high activity, robust stability, and facile structure adjustment, perovskite oxide photocatalysts have been widely used in water decomposition, carbon dioxide reduction and conversion, and nitrogen fixation. In terms of carbon dioxide reduction, oxide perovskites can achieve precise band gap and band edge tuning owing to its long charge diffusion length and flexibility in composition. For the development and utilization of solar energy in the environmental field, perovskite oxide and its derivatives (layered perovskite oxide) are used as photocatalysts for water decomposition and environmental remediation. In terms of nitrogen fixation, the conventional Haber-Bosh process for ammonia synthesis, which has been widely used in the past, requires high temperature and high energy. Therefore, we summarize the recent advances in perovskite oxide photocatalysts for nitrogen fixation from the aspect of activating the adsorbed N2 by weakening the N $ \equiv $N triple bond, promoting charge separation, and accelerating the charge transfer to the active sites to realize the photochemical reaction. Overall, this review article presents the structure and synthesis of perovskite oxide photocatalysis, focusing on the application of photocatalysis in water splitting, carbon dioxide reduction, and nitrogen fixation. This review concludes by presenting the current challenges and future prospects of perovskite oxide photocatalysts.

Key words: Perovskite oxide, Photocatalysis, Carbon dioxide reduction, Water splitting, Nitrogen fixation

MSC2000: 

  • O643