光催化
材料科学
纳米材料
模板
相(物质)
化学工程
金属
亚稳态
半导体
光催化分解水
多孔性
原位
氢
模板方法模式
催化作用
制氢
纳米技术
分解水
光电子学
化学
冶金
有机化学
复合材料
工程类
作者
Xin Xu,Yaru Song,Shaohui Guo,Youzi Zhang,Bilin Wang,Jiakang Yu,Tongtong Li
标识
DOI:10.1016/j.apcatb.2020.118773
摘要
The large-scale synthesis of the metallic phase MoS2 (1 T MoS2) is important for enhancing the photocatalytic hydrogen evolution reaction (HER). However, it’s difficult to obtain a high-quality of 1 T MoS2, especially when integrated with other semiconductors for hetero nanomaterials. Herein, a one-step confined template method is proposed to obtain high-quality 1 T MoS2 in the CuS nanoframe (CuS–MoS2–1 T). During the synthesis, a unique porous Cu–Mo-based metal–organic framework (MOF), i.e., NENU-5 template has been adopted and in situ sulfurized, where 1 T MoS2 and CuS have been simultaneously obtained. Interestingly, we find that the confined pores of the CuS nanoframe inhibits the bulk growth of MoS2 to produce high-stability and large-scale 1 T MoS2 (a high concentration of ∼70 %). The obtained nanomaterial exhibits remarkable photocatalytic activity with the hydrogen production rate of approximately 9648.7 μmol g−1 h−1, which is much higher than other various newly developed photocatalysts reported early. This study develops a new strategy via MOF confined template for high-quality 1 T MoS2 production and achieves outstanding performance in the photocatalytic water splitting. This approach may also shed light on other similar confined templates for the praparation of high-quality metastable nanomaterials.
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