Newly developed two-dimensional materials for efficient photocatalytic hydrogen evolution

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（14）
• 页码范围: 958-960
• 页数: 3页
• 语种: 英文

摘要

Due to the increasing environmental and energy issues,hydrogen,as a clean and non-carbon energy source,has received more and more attention in the past decades.Photocatalysis has been known as a promising approach for hydrogen generation and a key measure in solving serious environmental problems.Different from traditional catalysts,such as ZnO and TiO2,two-dimensional (2D) materials display unique advantages to hydrogen production due to their large specific surface area,high charge migration rate,tunable electronic structure and ultra-lightweight [1].Especially,2D materials show short migration distance for the generated electrons and holes,leading to the reduction of electron-hole recombination,which is one of the key factors affecting photocatalytic efficiency [2-4].MoS2 [5],1T-WS2 and 2H-WS2 nanosheets [6] have been reported as efficient co-catalysis for hydrogen evolution,which means the integration of 2D nanosheets with other catalysts such as TiO2 is still needed.Therefore,developing new photocatalysts is a pressing need for efficient hydrogen generation.