Zhang Cen, Wang Li, Huang Xi, Bai Liang, Yu Qiyuan, Jiang Bin, Zheng Chenlu, Cao Jing
Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China.
Environ Sci Pollut Res Int. 2023 Jan;30(5):11811-11822. doi: 10.1007/s11356-022-22974-1. Epub 2022 Sep 13.
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-MoS nanoflowers were synthesized via a one-step hydrothermal method. The influence of Co content on the structure and catalytic performance of 1T-MoS 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-MoS. Meanwhile, the highest activity was achieved due to the synergy effect of Co-Mo-S and CoS active phase. In the catalytic reduction of 4-NP, the reaction rate constant of Co/1T-MoS-0.3 was as high as 0.908 min 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 MoS catalysts towards 4-NP reduction in wastewater.
开发高效且经济高效的非贵金属催化剂用于将4-硝基苯酚（4-NP）还原为4-氨基苯酚（4-AP）具有重要意义。在此，通过一步水热法合成了Co促进的1T-MoS纳米花。详细研究了Co含量对1T-MoS结构和催化性能的影响。发现Co掺杂不仅提高了电子导电性，还增加了1T-MoS的氢吸附能力。同时，由于Co-Mo-S和CoS活性相的协同作用，实现了最高活性。在4-NP的催化还原中，Co/1T-MoS-0.3的反应速率常数高达0.908 min，并且该催化剂在循环使用五次后表现出优异的稳定性。本工作为合理设计用于废水中4-NP还原的高效金属掺杂MoS催化剂提供了新的见解。
