Premium
Sequential Chemistry Toward Core–Shell Structured Metal Sulfides as Stable and Highly Efficient Visible‐Light Photocatalysts
Author(s) -
Zhang Xingmiao,
Liang Haichen,
Li Haoze,
Xia Yuan,
Zhu Xiaohang,
Peng Liang,
Zhang Wei,
Liu Liangliang,
Zhao Tiancong,
Wang Changyao,
Zhao Zaiwang,
Hung ChinTe,
Zagho Moustafa M.,
Elzatahry Ahmed A.,
Li Wei,
Zhao Dongyuan
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201913600
Subject(s) - sulfide , cadmium sulfide , photocatalysis , metal , aqueous solution , chemistry , catalysis , solubility , materials science , chemical engineering , inorganic chemistry , nanotechnology , organic chemistry , engineering
A universal sequential synthesis strategy in aqueous solution is presented for highly uniform core–shell structured photocatalysts, which consist of a metal sulfide light absorber core and a metal sulfide co‐catalyst shell. We show that the sequential chemistry can drive the formation of unique core–shell structures controlled by the constant of solubility product of metal sulfides. A variety of metal sulfide core–shell structures have been demonstrated, including CdS@CoS x , CdS@MnS x , CdS@NiS x , CdS@ZnS x , CuS@CdS, and more complexed CdS@ZnS x @CoS x . The obtained strawberry‐like CdS@CoS x core–shell structures exhibit a high photocatalytic H 2 production activity of 3.92 mmol h −1 and an impressive apparent quantum efficiency of 67.3 % at 420 nm, which is much better than that of pure CdS nanoballs (0.28 mmol h −1 ), CdS/CoS x composites (0.57 mmol h −1 ), and 5 %wt Pt‐loaded CdS photocatalysts (1.84 mmol h −1 ).