Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Perovskite CsCuClxBr3-x Microcrystals: Band Structure, Photochemical Stability, and Photocatalytic Properties. / Tang, Shuang Chao; Li, Yan Jie; Yang, Jing; Zhao, Ting; Tian, Jie; Wang, Yan Jie; Ji, Zhuo Yu; Li, Yu; Dai, Yi Tao; He, Tao; Zhang, Yong-Wei; Emeline, Alexei V.; Pang, Qi; Bahnemann, Detlef W.; Pan, Jia Hong.
в: ChemSusChem, 23.12.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Perovskite CsCuClxBr3-x Microcrystals: Band Structure, Photochemical Stability, and Photocatalytic Properties
AU - Tang, Shuang Chao
AU - Li, Yan Jie
AU - Yang, Jing
AU - Zhao, Ting
AU - Tian, Jie
AU - Wang, Yan Jie
AU - Ji, Zhuo Yu
AU - Li, Yu
AU - Dai, Yi Tao
AU - He, Tao
AU - Zhang, Yong-Wei
AU - Emeline, Alexei V.
AU - Pang, Qi
AU - Bahnemann, Detlef W.
AU - Pan, Jia Hong
PY - 2024/12/23
Y1 - 2024/12/23
N2 - Abstract Although Pb-based metal halide perovskites (MHPs) have excellent photoelectric characteristics, its toxicity remains a limiting factor for its widespread application. In the paper, a series of CsCuClxBr3-x (x=1, 2, 3) MHPs microcrystals were developed and their hydrogen evolution performance in ethanol and HX (X=Cl, Br) were also studied. Among them, CsCuCl3 microcrystals exhibit high hydrogen evolution performance in both HX and ethanol, attributed to its longest average lifetime and suitable band structure. Additionally, the effect of different sacrificial agents on photocatalytic hydrogen production indicates that the photogenerated hole (h+) plays a critical role. MHPs can maintain a dynamic equilibrium of dissolution and precipitation in HX saturated aqueous solutions, thereby overcoming the stability issues associated with perovskite. The phase transition of CsCuClxBr3-x during photocatalysis is monitored by XRD technique. CsCuCl3 shows high stability in saturated HCl aqueous solution, and excellent photocatalytic performance with a hydrogen production rate of CsCuCl3 microcrystals reached 103.98 μmol g−1 at 210 min. Our study expands the development prospects of CsCuCl3 in the field of photocatalytic solar fuel generation.
AB - Abstract Although Pb-based metal halide perovskites (MHPs) have excellent photoelectric characteristics, its toxicity remains a limiting factor for its widespread application. In the paper, a series of CsCuClxBr3-x (x=1, 2, 3) MHPs microcrystals were developed and their hydrogen evolution performance in ethanol and HX (X=Cl, Br) were also studied. Among them, CsCuCl3 microcrystals exhibit high hydrogen evolution performance in both HX and ethanol, attributed to its longest average lifetime and suitable band structure. Additionally, the effect of different sacrificial agents on photocatalytic hydrogen production indicates that the photogenerated hole (h+) plays a critical role. MHPs can maintain a dynamic equilibrium of dissolution and precipitation in HX saturated aqueous solutions, thereby overcoming the stability issues associated with perovskite. The phase transition of CsCuClxBr3-x during photocatalysis is monitored by XRD technique. CsCuCl3 shows high stability in saturated HCl aqueous solution, and excellent photocatalytic performance with a hydrogen production rate of CsCuCl3 microcrystals reached 103.98 μmol g−1 at 210 min. Our study expands the development prospects of CsCuCl3 in the field of photocatalytic solar fuel generation.
KW - MHPs
KW - CsCuCl3
KW - lead-free perovskites
KW - photocatalysis
KW - hydrogen evolution
U2 - 10.1002/cssc.202402094
DO - 10.1002/cssc.202402094
M3 - Article
JO - ChemSusChem
JF - ChemSusChem
SN - 1864-5631
M1 - e202402094
ER -
ID: 134516020