Chemically Exfoliated MoS2 Nanosheets as an Efficient Catalyst for Reduction Reactions in the Aqueous Phase
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- 作者：Laura Guardia ; Juan I. Paredes ; Jos茅 M. Munuera ; Silvia Villar-Rodil ; Miguel Ay谩n-Varela ; Amelia Mart铆nez-Alonso ; Juan M. D. Tasc贸n
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2014
- 出版时间：December 10, 2014
- 年：2014
- 卷：6
- 期：23
- 页码：21702-21710
- 全文大小：362K
- ISSN：1944-8252
文摘
Chemically exfoliated MoS2 (ce-MoS2) nanosheets that incorporate a large fraction of metallic 1T phase have been recently shown to possess a high electrocatalytic activity in the hydrogen evolution reaction, but the potential of this two-dimensional material as a catalyst has otherwise remained mostly uncharted. Here, we demonstrate that ce-MoS2 nanosheets are efficient catalysts for a number of model reduction reactions (namely, those of 4-nitrophenol, 4-nitroaniline, methyl orange, and [Fe(CN)6]3鈥?/sup>) carried out in aqueous medium using NaBH4 as a reductant. The performance of the nanosheets in these reactions is found to be comparable to that of many noble metal-based catalysts. The possible reaction pathways involving ce-MoS2 as a catalyst are also discussed and investigated. Overall, the present results expand the scope of this two-dimensional material as a competitive, inexpensive, and earth-abundant catalyst.