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云师大化工学院赵学博士在top期刊《Chemical Engineering Journal》发表最新研究成果

已有 1457 次阅读 2024-2-27 22:45 |个人分类:云师大研究|系统分类:论文交流

2024年2月26日，Elsevier 旗下top期刊《Chemical Engineering Journal》在线发表了云南师范大学化学与化工学院高端引进人才赵学博士、赵焱教授、浙江海洋大学周英堂教授等团队合作的最新研究成果《Regulating the microenvironment of atomically dispersed cobalt to achieve the record-breaking mineralization and 100% removal of organic pollutant》。第一作者单位为云南师范大学化学化工学院，浙江海洋大学为共同第一作者单位，第一作者为化学化工学院赵学、段良飞和浙江海洋大学 Mengshan Chen，云南师范大学化学与化工学院赵学博士、可再生能源材料先进技术与制备教育部重点实验室杨培志教授和浙江海洋大学周英堂教授和云南大学胡广志为共同通讯作者。合作单位还有成都大学和西北农林科技大学。

Abstract

Advanced-oxidation-process (AOPs) based on peroxymonosulfate (PMS) can provide strong reactive oxygen species (ROS) for the elimination of persistent-organic-pollutants (POPs), but the input of highly active environmentally friendly catalysts is the key. Here, confined cobalt was in-situ deposited on natural mineral halloysite nanotubes by Coulomb interaction, which further realizes the introduction of atomically-dispersed cobalt sites in nitrogen-doped hollow-carbon-nanotubes with large specific surface area. The constructed CoNC/NHCNTs-900 material can effectively activate PMS, resulting in the removal rate of tetracycline probe pollutants close to 100%, and the mineralization rate reached a record of 89.07%. Combined with density functional theory calculations, it was proved that the enrichment of graphite nitrogen is beneficial to regulate the microenvironment of Co and promote the adsorption and activation of PMS. In-depth tracking of the formation of ROS and the mechanism of tetracycline mineralization proved that CoNC/NHCNTs-900-driven AOPs degradation of POPs into a low-toxic species has reliability and practical significance.

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