MOF-Derived Flower-like MoS2@TiO2 Nanohybrids with Enhanced Activity for Hydrogen Evolution

被引：163

作者：

Ma, Bing ^{[1
]}

Guan, Pei-Yao ^{[1
]}

Li, Qiu-Ying ^{[1
]}

Zhang, Mei ^{[1
]}

Zang, Shuang-Quan ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 40期

基金：

中国国家自然科学基金;

关键词：

metal-organic frameworks; photo- and electrocatalysis; hydrogen evolution reaction; MoS2@TiO2; flower-like nanohybrids; CHEMICALLY EXFOLIATED MOS2; METAL-ORGANIC FRAMEWORKS; HYBRID NANOSTRUCTURES; LITHIUM STORAGE; FREE SYSTEM; PERFORMANCE; ENERGY; OXYGEN; NANOPARTICLES; NANOSHEETS;

D O I：

10.1021/acsami.6b08740

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A simple hydrothermal method is developed for synthesizing crystalline MoS2@TiO2 nanohybrids with metal-organic framework (MOP) as precursor. At an optimal ratio of 14.6 wt % MoS2, the resultant material exhibits prominent catalytic activity for hydrogen evolution reaction (HER) with a high hydrogen production rate of 10 046 mu mol h(-1) g(-1) under visible light illumination with fluorescein as photosensitizer. Furthermore, the synthesized catalyst also possesses an attractive electrocatalytic activity with an onset overpotential of -300 mV (vs RHE) and a Tafel slope of similar to 81 mV dec(-1). The enhanced catalyst performances are mainly attributed to the in situ formed active sites, featuring a uniform dispersion and strong connection of MoS2 and TiO2, which can facilitate electron transfer. In addition, the MoS2@TiO2 nanohybrids are highly stable and completely recyclable over HER.

引用

页码：26794 / 26800

页数：7

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