Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 891, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.161900
Keywords
Catalytic reduction; MoS2; Ti3C(2); 4-nitrophenol; NaBH4
Categories
Funding
- Chongqing Talent Program, and Research Foundation of Chongqing Jiaotong University [21JDKJC-A010, 21JDKJC-A011]
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A simple one-step hydrothermal synthesis strategy was used to deposit edge-rich MoS2 nanosheets on Ti3C2 MXene, resulting in MoS2/Ti3C2 heterostructure with significant active site exposure and effective charge carrier flow. The MoS2/Ti3C2 catalyst showed enhanced activity and stability in catalytic reduction reactions, surpassing the pristine MoS2 nanosheets. This study opens new opportunities for cost-effective and efficient alternatives to noble metal catalysts for environmental applications.
In this work, we report a simple one-step hydrothermal synthesis strategy for depositing edge-rich MoS2 nanosheets on conductive layered Ti3C2 MXene, and demonstrate the formed MoS2/Ti3C2 heterostructure has significant active site exposure and effective charge carrier flow. The resulting MoS2/Ti3C2 exhibits enhanced activity and excellent stability for the catalytic reduction of 4-nitrophenol (4-NP). The optimal MoS2/Ti3C2 catalyst displays a high pseudo-first-order rate constant of 0.61 min-1, a conversion efficiency of 96.2% within 5 min and almost unchanged activity after six consecutive reaction cycles, which is better than the pristine MoS2 nanosheets. Moreover, the MoS2/Ti3C2 catalyst achieves a pseudo-first-order rate constant as high as 0.779 min-1 for the catalytic reduction of methylene blue (MB). This study opens up new opportunities for the design and development of cost-effective, efficient and reusable alternatives to noble metal catalysts based on molybdenum disulfide for environmental applications. (c) 2021 Elsevier B.V. All rights reserved.
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