fulltext.study @t Gmail

A cobalt-based polyoxometalate catalyst for efficient visible-light-driven H2 evolution from water splitting

Paper ID Volume ID Publish Year Pages File Format Full-Text
49875 46770 2015 4 PDF Available
Title
A cobalt-based polyoxometalate catalyst for efficient visible-light-driven H2 evolution from water splitting
Abstract

•A cobalt-based polyoxometalate was synthesized by a simple aqueous solution method.•It showed efficient catalytic activity for the visible-light-driven H2 evolution.•[B-PW9O34]9 − units act as electron transmitters to accelerate charge transfer.•A possible mechanism of the visible-light-driven H2 evolution was proposed.

A cobalt-based polyoxometalate, Na7H10[Co6(H2O)2(PW9O34)2(PW6O26)]·30H2O, was synthesized by a simple aqueous solution method. It showed catalytic activity for the visible-light-driven H2 evolution from water splitting with eosin Y as the photosensitizer and triethanolamine as the electron donor. The initial rate of the H2 evolution was 141 μmol h− 1, which was higher than that of Co2 + cations (55 μmol h− 1). The efficient catalytic activity was attributed to that the [B-PW9O34]9 − units in the sample act as electron transmitters to accelerate charge transfer. Moreover, a possible mechanism was proposed to explain the H2 evolution from water splitting in the present system.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Cobalt; Polyoxometalate; H2 evolution; Visible light
First Page Preview
A cobalt-based polyoxometalate catalyst for efficient visible-light-driven H2 evolution from water splitting
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 64, 5 April 2015, Pages 44–47
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis