Journal
CHINESE CHEMICAL LETTERS
Volume 30, Issue 6, Pages 1273-1276Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2019.01.024
Keywords
Polyoxometalate; High-nuclear cobalt cluster; Photocatalysis; CO2 reduction; Photosensitizer
Categories
Funding
- Science and Technology Research Foundation of the Thirteenth Five Years of Jilin Educational Committee [JJKH20170605KJ]
Ask authors/readers for more resources
A high-nuclear Co-V-O cluster was firstly isolated by lacunary polyoxoanion, resulting in the high-nuclear mixed metal-oxo cluster-containing polyoxometalate (POM), K4Na28[{Co-4(O-H)(3)(VO4)}(4)(SiW9O34)(4)]center dot 66H(2)O (1). In 1, the {Co-4(O-H)(3)(VO4)}(4) {Co-16-V-4} core, composed of a {Co4O4} cubane, four {Co-4(OH)(3)} qusi-cubanes and four VO4 units, was stabilized by four lacunary A-alpha-{SiW9O34} units. Photocatalytic study reveals that 1 exhibits excellent photocatalytic activity for CO2-to-CO conversion with high selectivity under visible light irradiation. The turnover number (TON) and turnover frequency (TOF) reaches as high as 10492 and 0.29 s(-1), respectively. Compound 1 represents the first high nuclear TM cluster-containing POM (TM = transition-metal) with efficient visible light catalytic activity for CO2 reduction, and its photocatalytic activity is much higher than those of most reported molecular catalysts. Photoluminescence spectroscopy study reveals that photoexcitation of Ru-photosensitizer is followed by an efficient electron transfer to POMs to reduce CO2. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available