Solar Energy, ( ISI ), Volume (227), Year (2021-10) , Pages (426-437)

Title : ( Porous perovskite-lanthanum cobaltite as an efficient cocatalyst in photoelectrocatalytic water oxidation by bismuth doped g-C3N4 )

Authors: Mahdi Karimi-Nazarabad , Hossein Ahmadzadeh , Elaheh Kafshdare Goharshadi ,

Citation: BibTeX | EndNote

Abstract

The electrophoretic loading of porous perovskite-lanthanum cobaltite (LaCoO3) on bismuth doped g-C3N4 (Bi@g-C3N4) as a novel photoanode was designed for the efficient photoelectrocatalytic water splitting. Before loading cocatalyst, the photoelectrocatalytic oxygen evolution of g-C3N4 was investigated with various amounts of Bi. The photoconversion efficiency enhanced more than 3.7 times for 3.6% Bi doped compared with that of the pristine g-C3N4. The Mott-Schottky plots showed the amount of band bending for Bi@g-C3N4 is more than that of g-C3N4 resulting in better electron transfer at the photoelectrode/electrolyte interface. By loading LaCoO3 on Bi@g-C3N4 photoanode, the photoconversion efficiency of 2.3% at 0.28 V (vs. RHE) was obtained under visible light which is more than that of Bi@g-C3N4 (0.92% at 0.48 V vs. RHE) alone. The high photocurrent density of 0.40 mA cm -2 was observed for Bi@g-C3N4/LaCoO3 photoanode as compared with Bi@g-C3N4 (0.17 mA cm -2) at the redox potential of O2/H2O. Also, Bi@g-C3N4/LaCoO3 photoanode represents a smaller arc radius in electrochemical impedance spectroscopy Nyquist plot compared with those of g-C3N4 and Bi@g-C3N4.

Keywords

, Bi@g, C3N4 Photoelectrocatalytic oxygen evolution LaCoO3 Cocatalyst
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@article{paperid:1086381,
author = {Karimi-Nazarabad, Mahdi and Ahmadzadeh, Hossein and Kafshdare Goharshadi, Elaheh},
title = {Porous perovskite-lanthanum cobaltite as an efficient cocatalyst in photoelectrocatalytic water oxidation by bismuth doped g-C3N4},
journal = {Solar Energy},
year = {2021},
volume = {227},
month = {October},
issn = {0038-092X},
pages = {426--437},
numpages = {11},
keywords = {Bi@g-C3N4 Photoelectrocatalytic oxygen evolution LaCoO3 Cocatalyst},
}

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%0 Journal Article
%T Porous perovskite-lanthanum cobaltite as an efficient cocatalyst in photoelectrocatalytic water oxidation by bismuth doped g-C3N4
%A Karimi-Nazarabad, Mahdi
%A Ahmadzadeh, Hossein
%A Kafshdare Goharshadi, Elaheh
%J Solar Energy
%@ 0038-092X
%D 2021

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