Title : ( Decoration of g-C3N4 by inorganic cluster of polyoxometalate through organic linker strategy for enhancing photoelectrocatalytic performance under visible light )
Authors: Mozhde Yousefi Hasan Abadi , Hossein Eshghi , Mahdi Karimi-Nazarabad ,
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Abstract
The efficient visible light-driven photoelectrocatalyst (denoted as g-C3N4-CO-TETA-Pr- SiW11) was designed through the organic linker strategy by combination of polyoxometalate (POM) (cluster of [SiW11O39]8 (SiW11)) with graphitic carbon nitride (g-C3N4). For this purpose, a reactive tetradentate NH2 linker was introduced by oxidation and subsequently amidation reactions on the surface of g-C3N4 frameworks then SiW11 was bonded to the organic linker to generate g-C3N4-CO-TETA-Pr-SiW11. In this study, for the first time, this organic linker strategy was applied for covalent combination of POM and g- C3N4 to design a stable photocatalyst with high-performance. Photoelectrocatalytic performance of prepared catalysts was investigated under visible light irradiation. The photocurrent density of 0.17 mA cm2 for g-C3N4-CO-TETA-Pr-SiW11 compared with 0.077 mA cm2 for g-C3N4 was achieved. Investigation of the transient open circuit potential decay and photoluminescence showed the efficient electron-hole separation for g- C3N4-CO-TETA-Pr-SiW11. The arc diameter in Nyquist plots indicated the improved charge transfer and charge carrier\\\'s lifetimes after decorating of g-C3N4 with POM. MottSchottky plots demonstrated a greater electron transfer at the photo electrode/electrolyte interface for g-C3N4-CO-TETA-Pr-SiW112.8 in compared to g-C3N4. Also, the photoconversion efficiency exhibited more than 2.4 time enhancement for g-C3N4-CO-TETA-Pr-SiW11 photoanode compared to g-C3N4.
Keywords
, POM, g-C3N4, Organic linker, Photoelectrocatalysis
@article{paperid:1087464,
author = {Yousefi Hasan Abadi, Mozhde and Eshghi, Hossein and Karimi-Nazarabad, Mahdi},
title = {Decoration of g-C3N4 by inorganic cluster of polyoxometalate through organic linker strategy for enhancing photoelectrocatalytic performance under visible light},
journal = {International Journal of Hydrogen Energy},
year = {2021},
volume = {47},
number = {5},
month = {November},
issn = {0360-3199},
pages = {3001--3012},
numpages = {11},
keywords = {POM; g-C3N4; Organic linker; Photoelectrocatalysis},
}
%0 Journal Article
%T Decoration of g-C3N4 by inorganic cluster of polyoxometalate through organic linker strategy for enhancing photoelectrocatalytic performance under visible light
%A Yousefi Hasan Abadi, Mozhde
%A Eshghi, Hossein
%A Karimi-Nazarabad, Mahdi
%J International Journal of Hydrogen Energy
%@ 0360-3199
%D 2021
