In:
Angewandte Chemie, Wiley, Vol. 132, No. 8 ( 2020-02-17), p. 3313-3319
Abstract:
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 ).
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.201913600
Language:
English
Publisher:
Wiley
Publication Date:
2020
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