Abstract
Developing efficient and cost-effective non-noble metal catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) is of great importance. Herein, Co-promoted 1T-MoS2 nanoflowers were synthesized via a one-step hydrothermal method. The influence of Co content on the structure and catalytic performance of 1T-MoS2 was studied in detail. It was found that Co doping not only enhanced the electronic conductivity but also increased the hydrogen adsorption ability of 1T-MoS2. Meanwhile, the highest activity was achieved due to the synergy effect of Co-Mo-S and CoS2 active phase. In the catalytic reduction of 4-NP, the reaction rate constant of Co/1T-MoS2-0.3 was as high as 0.908 min−1 and the catalyst exhibited excellent stability after recycling five times. The present work provides new insights for the rational design of highly efficient metal-doped MoS2 catalysts towards 4-NP reduction in wastewater.
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Funding
This work was financially supported by the National Natural Science Foundation of China (Grant No. 22102055), Natural Science Foundation of Hunan Province (Grant No. 2021JJ40222), the Scientific Research Fund of Hunan Provincial Education Department (Grant No. 20B264), and the Undergraduate Innovation and Entrepreneurship Training Program of Hunan Institute of Science and Technology.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Cen Zhang, Li Wang, Xi Huang, Liang Bai, Qiyuan Yu, Bin Jiang, and Chenlu Zheng. The first draft of the manuscript was written by Jing Cao, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Highlights
• Co-promoted 1T-MoS2 nanoflowers were synthesized by a facile one-pot hydrothermal method.
• The optimized Co/1T-MoS2 catalyst showed excellent catalytic activity and stability in the reduction of 4-nitrophenol.
• The excellent catalytic performance was attributed to the synergism between Co-Mo-S and CoS2 active phase.
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Zhang, C., Wang, L., Huang, X. et al. Rational construction of Co-promoted 1T-MoS2 nanoflowers towards high-efficiency 4-nitrophenol reduction. Environ Sci Pollut Res 30, 11811–11822 (2023). https://doi.org/10.1007/s11356-022-22974-1
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DOI: https://doi.org/10.1007/s11356-022-22974-1