TY - JOUR
T1 - Lead-free hybrid perovskite photocatalysts
T2 - surface engineering, charge-carrier behaviors, and solar-driven applications
AU - Tang, Yunqi
AU - Mak, Chun Hong
AU - Jia, Guohua
AU - Cheng, Kuan-Chen
AU - Kai, Ji-Jung
AU - Hsieh, Chang-Wei
AU - Meng, Fanxu
AU - Niu, Wenxin
AU - Li, Fang-Fang
AU - Shen, Hsin-Hui
AU - Zhu, Xunjin
AU - Chen, Hao Ming
AU - Hsu, Hsien-Yi
N1 - Funding Information:
The authors acknowledge financial support from the Research Grants Council of Hong Kong (grant no. CityU 21203518, HKBU 12304320, F-CityU106/18 and 9048121), City University of Hong Kong (grant no. 9667229, 7005289, 7005580, 7005720, 9680208, 9667213, 9680331 and 9052029), and Shenzhen Science Technology and Innovation Commission (grant no. JCYJ20210324125612035, R-IND12303 and R-IND12304), Australian Research Council (ARC) Discovery Early Career Researcher Award (DE160100589), as well as the National Natural Science Foundation of China (grant no. 21974131, 22071070).
Publisher Copyright:
© 2022 The Royal Society of Chemistry
PY - 2022/6
Y1 - 2022/6
N2 - Lead-based hybrid perovskites have sparked substantial research interest due to the immense progress in the fields of optoelectronics and photocatalysis. However, owing to the environmental issues of lead toxicity, lead-free hybrid perovskites (LFHPs) with non-toxic metal elements, such as bismuth, strontium, etc., have attracted considerable attention. LFHPs have been recognized as potential photocatalysts because their electronic structures can be easily adjusted by tuning their chemical compositions, crystal structures, and surface morphology. In recent years, the investigation of charge-carrier behaviours on surface-engineered LFHP photocatalysts has been spurting from solar-to-fuel conversion (e.g., hydrogen evolution and CO2 reduction to CO or CH4) to some organic reactions (e.g., organic synthesis and dye degradation). Therefore, in this Review, photocatalytical fundamentals and surface engineering to enhance the charge transport and separation of available photocatalysts are firstly introduced. Synthetic methods of hybrid perovskites with resultant material properties are then discussed. Finally, the performance of LFHPs in solar-driven applications is described. According to the results achieved, current challenges and future research directions in the development of lead-free hybrid perovskites for enhancing photocatalytic efficiency and stability are summarized.
AB - Lead-based hybrid perovskites have sparked substantial research interest due to the immense progress in the fields of optoelectronics and photocatalysis. However, owing to the environmental issues of lead toxicity, lead-free hybrid perovskites (LFHPs) with non-toxic metal elements, such as bismuth, strontium, etc., have attracted considerable attention. LFHPs have been recognized as potential photocatalysts because their electronic structures can be easily adjusted by tuning their chemical compositions, crystal structures, and surface morphology. In recent years, the investigation of charge-carrier behaviours on surface-engineered LFHP photocatalysts has been spurting from solar-to-fuel conversion (e.g., hydrogen evolution and CO2 reduction to CO or CH4) to some organic reactions (e.g., organic synthesis and dye degradation). Therefore, in this Review, photocatalytical fundamentals and surface engineering to enhance the charge transport and separation of available photocatalysts are firstly introduced. Synthetic methods of hybrid perovskites with resultant material properties are then discussed. Finally, the performance of LFHPs in solar-driven applications is described. According to the results achieved, current challenges and future research directions in the development of lead-free hybrid perovskites for enhancing photocatalytic efficiency and stability are summarized.
UR - http://www.scopus.com/inward/record.url?scp=85133614832&partnerID=8YFLogxK
U2 - 10.1039/d2ta01170k
DO - 10.1039/d2ta01170k
M3 - Review article
AN - SCOPUS:85133614832
SN - 2050-7488
VL - 10
SP - 12296
EP - 12316
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 23
ER -
