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Published in: Journal of Nanoparticle Research 6/2022

01-06-2022 | Research paper

NiFe oxyhydroxide decorated TiO2 nanotube photoanodes for improved photoelectrochemical oxidation performance

Authors: Zhong-Hang Xing, Xiao-He Liu, Qing-Yun Chen, Yun-Hai Wang

Published in: Journal of Nanoparticle Research | Issue 6/2022

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Abstract

Developing highly efficient and durable semiconductor photoelectrodes has become a great significance for the synthesis of clean fuels and valuable chemical products via photoelectrochemical (PEC) cell. Herein, TiO2 nanotube array–supported amorphous cocatalyst NiFe oxyhydroxides (NiFe-OOH/TiO2 NTs) were constructed by the electrodeposition method. Surprisingly, the prepared amorphous NiFe oxyhydroxides were uniformly decorated on the surface of TiO2 nanotubes without the agglomeration, which were conducive to the separation and transfer of photogenerated carriers. These nanoarchitectonics of NiFe-OOH/TiO2 NTs were favorable for promoting both the water oxidation and the selective oxidation of benzyl alcohol (BA). NiFe-OOH/TiO2 NTs demonstrated admirable stability for the water oxidation, reaching the photocurrent density of 0.49 mA cm−2 at 1.23 V vs. RHE. Furthermore, the conversion efficiency and the selectivity of BA to benzaldehyde under neutral conditions were as high as 67.7% and 84.7%, respectively. This work may provide a simple method for preparing efficient and durable photoelectric electrodes to improve the oxidation performance of PEC cell.

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Metadata
Title
NiFe oxyhydroxide decorated TiO2 nanotube photoanodes for improved photoelectrochemical oxidation performance
Authors
Zhong-Hang Xing
Xiao-He Liu
Qing-Yun Chen
Yun-Hai Wang
Publication date
01-06-2022
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 6/2022
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-022-05505-4

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