Oxygen-defects modified amorphous Ta2O5 nanoparticles for solar driven hydrogen evolution

An oxygen-deficient amorphous Ta2O5 nanoparticle photocatalyst was synthesized by a solvothermal method and thermal annealing in Ar atmosphere. The as-prepared Ta2O5 photocatalysts possess improved hydrogen evolution activities compared to pristine Ta2O5 and commercial Ta2O5 under the irradiation of...

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Veröffentlicht in:Ceramics international Jg. 47; H. 4; S. 4702 - 4706
Hauptverfasser: Liu, Yong, Zeng, Weixuan, Ma, Yongjin, Dong, Rui, Tan, Pengfei, Pan, Jun
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 15.02.2021
Schlagworte:
Amorphous Ta2O5
Oxygen defects
Photocatalyst
Oxygen defects
Photocatalyst
Amorphous Ta2O5
ISSN:0272-8842, 1873-3956
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Zusammenfassung:An oxygen-deficient amorphous Ta2O5 nanoparticle photocatalyst was synthesized by a solvothermal method and thermal annealing in Ar atmosphere. The as-prepared Ta2O5 photocatalysts possess improved hydrogen evolution activities compared to pristine Ta2O5 and commercial Ta2O5 under the irradiation of simulated solar light. Therein, Ta2O5 nanoparticles annealing at 400 °C exhibit the most preferable catalytic performance of 10.67 μmol g−1 h−1. The enhanced performance can be attributed to the existence of oxygen defects in the samples, which can facilitate the separation and migration of photogenerated carriers thereby reducing the probability of recombination. [Display omitted]
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2020.10.038