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Published in: Journal of Materials Science 27/2021

29-06-2021 | Energy materials

Synthesis of TiO2/LaFeO3 composites for the photoelectrochemical hydrogen evolution

Authors: Yunhong Jiang, Qi Lv, Fu Xu, Xing Sun, Yanhuai Ding

Published in: Journal of Materials Science | Issue 27/2021

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Abstract

Developing highly active catalysts for hydrogen evolution reaction is vital for large-scale and efficient production of hydrogen through water splitting. In this study, we reported scale-up TiO2/LaFeO3 composite catalysts with multiple heterojunctions synthesized via facile solid-phase reaction and investigated their hydrogen evolution reaction (HER) performance in both acidic and alkaline solutions. To be excited, under AM1.5 simulated sunlight irradiation, the working electrode decorated by TiO2/LaFeO3 presents a higher current density with 10 mV/cm2 at 0.55 V in a 0.5 M H2SO4 solution, suppressing the corresponding performance with the occasion of pure electrocatalysis. Importantly, the hydrogen evolution efficiency can reach 7.62 mmol h−1 cm−2, overwhelming approximately 5.3 times higher than that of commercial P25 (1.43 mmol h−1 cm−2) with exceptional stability via imposing simulated sunlight and a bias of 500 mV. Therefore, such excellent catalysts could serve as an alternative to reach remarkable HER performance via fossil fuels free technology, potentially making contribution toward the goal of global “carbon neutral” by 2050.

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Appendix
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Metadata
Title
Synthesis of TiO2/LaFeO3 composites for the photoelectrochemical hydrogen evolution
Authors
Yunhong Jiang
Qi Lv
Fu Xu
Xing Sun
Yanhuai Ding
Publication date
29-06-2021
Publisher
Springer US
Published in
Journal of Materials Science / Issue 27/2021
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-06188-3

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