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Tethering Metal Ions to Photocatalyst Particulate Surfaces by Bifunctional Molecular Linkers for Efficient Hydrogen Evolution
Author(s) -
Yu Weili,
Isimjan Tayirjan,
Gobbo Silvano Del,
Anjum Dalaver H.,
AbdelAzeim Safwat,
Cavallo Luigi,
GarciaEsparza Angel T.,
Domen Kazunari,
Xu Wei,
Takanabe Kazuhiro
Publication year - 2014
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201402297
Subject(s) - bifunctional , photocatalysis , metal , chemistry , hydrogen , particulates , nanotechnology , metal ions in aqueous solution , water splitting , photochemistry , materials science , chemical engineering , catalysis , organic chemistry , engineering
A simple and versatile method for the preparation of photocatalyst particulates modified with effective cocatalysts is presented; the method involves the sequential soaking of photocatalyst particulates in solutions containing bifunctional organic linkers and metal ions. The modification of the particulate surfaces is a universal and reproducible method because the molecular linkers utilize strong covalent bonds, which in turn result in modified monolayer with a small but controlled quantity of metals. The photocatalysis results indicated that the CdS with likely photochemically reduced Pd and Ni, which were initially immobilized via ethanedithiol (EDT) as a linker, were highly efficient for photocatalytic hydrogen evolution from Na 2 S‐Na 2 SO 3 ‐containing aqueous solutions. The method developed in this study opens a new synthesis route for the preparation of effective photocatalysts with various combinations of bifunctional linkers, metals, and photocatalyst particulate materials.