A novel lattice-embedded ZnO@TiO2(B) nanoflowers promotes photocatalytic production of H2

Traditional surface-to-surface contact heterojunctions suffer from poor stability and low electron-hole separation efficiency, which has become a crucial limiting the further improvement of photocatalytic property. Therefore, improving the combination of heterogeneous materials will become a new attempt. In this work, a novel lattice embedded ZnO@TiO2(B) nanoflowers was prepared by combining electrodeposition method combined & nbsp;with hot solvent method. The hetero interface of the ZnO@TiO2(B) nanoflowers is distributed in the phase of TiO2(B), which drives high-efficiency charge separation. The sample Zn:Ti 1:4 has the highest photocatalytic property, and the H2 generation efficiency under the full spectrum is 1.695 mmol g-1 h-1, which is 3.5 times that of TiO2(B). After 36 h cycle stability test, its stability is as high as 90%. According to results, the possible mechanism of ZnO@TiO2(B) photocatalytic hydrogen production is proposed. These findings may provide new strategies for the preparation of high-efficiency heterojunction photocatalysts with special structures. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

Traditional surface-to-surface contact heterojunctions suffer from poor stability and low electron-hole separation efficiency. In this study, a novel lattice embedded ZnO@TiO2(B) nanoflowers were prepared to achieve high-efficiency charge separation and stable photocatalytic performance.