Rationally designed Ti3C2 MXene@TiO2/CuInS2 Schottky/S-scheme integrated heterojunction for enhanced photocatalytic hydrogen evolution

By Wenxiang Yang, Guozhi Ma, Yinghua Fu, K. Peng, Hongli Yang, Xiaoqiang Zhan, Weiyou Yang, Lin Wang, Huilin Hou. Chemical Engineering Journal, 2022

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Abstract The development of novel and efficient heterojunction photocatalysts is still a challenging issue for achieving highly efficient solar-to-chemical energy conversion. Herein, we report the construction of Ti3C2 MXene@TiO2/CuInS2 (M@T/CIS) integrated Schottky/step-scheme (S-scheme) heterojunction by two-step hydrothermal process for boosting photocatalytic hydrogen generation activity. The as-prepared M@T/CIS hybrid photocatalysts exhibit the synergistic effects for enhanced visible-light harvesting, improved charge transfer and increased active site for photocatalytic H2 evolution. They deliver a H2 evolution rate of 356.27 μmol g-1 h-1, which is ∼69 and 636 times higher than those of M@T and CIS, respectively, representing their potential applications towards photocatalytic H2 evolution.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/96d392e73ab24508e07230e5ec139ccf91d78a40