The electronegativity modulation of rutile TiO2 nanorods by phosphate and its photocatalytic hydrogen production performance

•TiO2-P-0.01 materials were prepared.•The surface electronic structure were studied.•The highest H2 production performance is 28 mmol·g−1·h−1. In this paper, PO was grafted on the surface of rutile TiO2 by one-step hydrothermal method. Due to the presence of the highly electronegative oxygen element...

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Bibliographic Details
Published in:Materials letters 2022-01, Vol.307, p.131056, Article 131056
Main Authors: Wang, Hong, Liu, Zhongying, Zhou, Yihai, Yang, Renchun
Format: Article
Language:English
Subjects:
Chemical reduction
Electronegativity
Electrons
Hydrogen production
Materials science
Nanorods
P[dbnd]O
Photocatalytic
Rutile
TiO2
Titanium dioxide
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Summary:•TiO2-P-0.01 materials were prepared.•The surface electronic structure were studied.•The highest H2 production performance is 28 mmol·g−1·h−1. In this paper, PO was grafted on the surface of rutile TiO2 by one-step hydrothermal method. Due to the presence of the highly electronegative oxygen element, the surface of TiO2 often presented an electron-deficient state, which limited its application in reduction reactions. Herein, the low electronegativity element P from the phosphate was grafted on the surface of TiO2 to form a PO structure, which changes the electronic equilibrium state of the TiO2 and provide a new channel for electron migration. The surface of TiO2 presented an electron-enrich structure, which promoted the best hydrogen production performance around 28 mmol·g−1·h−1 on TiO2-P-0.01.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.131056