Green preparation of in-situ oxidized TiO2/Ti3C2 heterostructure for photocatalytic hydrogen production

The preparation of high-efficiency photocatalysts by green and mild methods is very attractive for photocatalysis field. Here, TiO2/Ti3C2 was prepared by in-situ oxidation with a green method, in which only water or H2O2 was used. A heterojunction interface formed between the anatase phase TiO2 and the Ti3C2, which was demonstrated by HRTEM and XRD. Fluorescence spectra and i-t transient photocurrent are used to study the separation efficiency of photogenerated electron-hole pairs. The close contact between Ti3C2 and TiO2 speed up the separation of photo-generated electron-hole pairs, promoting a higher hydrogen production performance around 2520.4 mu mol.g(-1).h(-1) on TCT-1. (C) 2021 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

Automated summary

High-efficiency photocatalysts of TiO2/Ti3C2 were prepared by a green method, showing a heterojunction interface accelerating the separation of photogenerated electron-hole pairs and promoting higher hydrogen production performance.