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Improving the photocatalytic hydrogen production of SrTiO3 by in situ loading ethylene glycol as a co-catalyst

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Abstract

Co-catalysts such as precious metals are usually necessary to promote the photocatalytic generation of hydrogen from water through inhibiting the recombination of photo-generated carriers. However, precious metals are expensive and harmful to the environment. In this work, an ethylene glycol (EG) molecule, which was chemically anchored on SrTiO3 nanoparticles (EG@STO) via an in situ process, was used as a co-catalyst for the first time. The first-principles calculation shows that the EG molecule chemically anchored on SrTiO3 is beneficial for the directional migration of carriers and accelerates the hydrogen evolution reaction. A photocatalytic hydrogen generation efficiency of 237 μmol g−1 h−1 was achieved with EG@STO, which is 19.5 times higher compared to that of SrTiO3. Moreover, EG@STO remained stable after 32 hours of reaction; in other words, the EG molecule is designed as a new type of efficient and stable co-catalyst, which provides an alternative approach for better semiconductor photocatalytic hydrogen reduction.

Graphical abstract: Improving the photocatalytic hydrogen production of SrTiO3 by in situ loading ethylene glycol as a co-catalyst

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Article information


Submitted
05 Jul 2020
Accepted
01 Sep 2020
First published
02 Sep 2020

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

Improving the photocatalytic hydrogen production of SrTiO3 by in situ loading ethylene glycol as a co-catalyst

L. Zhu, W. Gu, J. Chen, H. Liu, Y. Zhang, Q. Wu, Y. Zhang, Z. Fu and Y. Lu, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/D0QI00807A

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