Department of Electronic Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
Inorg Chem. 2021 Dec 6;60(23):17635-17640. doi: 10.1021/acs.inorgchem.1c02217. Epub 2021 Nov 8.
Catalytic chemical degradations and many other methodologies have been explored for the removal and/or degradation of organophosphorus agents (OPs) that are often used as pesticides, nerve agents, and plasticizers. To explore more efficient and recyclable catalysts for the removal and/or degradation of OPs, we fabricate the composites of cobalt nanoparticles and three-dimensional nitrogen-doped graphene (Co/3DNG). We demonstrate that OPs can be hydrolyzed efficiently at ambient temperature by the Co/3DNG. Because of the unique structural and chemical properties of the supporting matrix 3DNG and active species Co-N, the catalytic activities of Co/3DNG composites are much higher than those of bare 3DNG, Co nanoparticles, or the Co nanoparticles physically mixed with 3DNG. We conclude that in the Co/3DNG composites, the interaction between 3DNG and Co stabilizes and distributes well the Co nanoparticles and affords the active catalytic species Co-N.
我们制备了钴纳米粒子和三维氮掺杂石墨烯（Co/3DNG）复合材料，以探索用于去除和/或降解有机磷试剂（OPs）的更高效和可回收催化剂。OPs 通常用作杀虫剂、神经毒剂和增塑剂。为了探索用于去除和/或降解 OPs 的更高效和可回收的催化剂，我们制备了钴纳米粒子和三维氮掺杂石墨烯（Co/3DNG）的复合材料。我们证明，OPs 可以在环境温度下通过 Co/3DNG 有效水解。由于支撑基质 3DNG 和活性物质 Co-N 的独特结构和化学性质，Co/3DNG 复合材料的催化活性远高于裸 3DNG、Co 纳米粒子或与 3DNG 物理混合的 Co 纳米粒子。我们得出结论，在 Co/3DNG 复合材料中，3DNG 与 Co 之间的相互作用稳定并很好地分布 Co 纳米粒子，并提供了活性催化物种 Co-N。
