光催化
化学
煅烧
光电效应
带隙
热液循环
吸收(声学)
吸光度
光电子学
纳米技术
催化作用
化学工程
材料科学
光学
物理
有机化学
工程类
色谱法
作者
Jinghan Ding,Yijin Wang,Shaohui Guo,Youzi Zhang,Xin Xu,Songwei Tang,Sibi Liu,Xuanhua Li
标识
DOI:10.1002/ejic.202100522
摘要
Abstract g‐C 3 N 4 as an appealing photocatalyst has received much attention due to its abundance, nontoxicity, and unique photoelectric properties. However, bare g‐C 3 N 4 usually suffers from restricted light absorbance and serious carriers recombination. The key issue of boosting the photocatalytic performance of the g‐C 3 N 4 lies in constructing hybrids for better optical and electrical effects. Here, the MoS 2 with different interlayer spacing is integrated with g‐C 3 N 4 via calcination and hydrothermal methods to form the high‐performance MoS 2 /g‐C 3 N 4 hybrid photocatalyst. Optimized energy‐band alignment with g‐C 3 N 4 is realized through regulating the interlayer spacing of MoS 2 , achieving improved carriers separation efficiency. In addition, the broadband absorption and rich active sites are also achieved here. As a result, the rationally designed MoS 2 /g‐C 3 N 4 composite (the MoS 2 interlayer spacing: 1.02 nm) exhibits the dominant photocatalytic performance (hydrogen production rate: 1281 μmol/h/g). This work opens a new road to realize a proper energy‐band alignment with g‐C 3 N 4 for high performance photocatalytic activity.
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