{"title":"以 ZIF-67 为 Co 源制备 CoO/Co/carbon 复合中空纳米纤维及其在高级氧化工艺中的应用","authors":"Haowei Sun, Qiaohong Peng, Guangzhen Li, Zheng Chen, Xiaoyu Huang, Hua Yuan","doi":"10.1016/j.apsusc.2024.161840","DOIUrl":null,"url":null,"abstract":"Advanced oxidation technology based on sulfate radical has great potential in the oxidation removal of refractory organic pollutants. Carbon materials with higher surface area, which are utilized to support transition metal catalyst such as Co, can effectively inhibit metal leaching and reduce the degree of secondary pollution. Herein, ZIF-67 as a Co source was doped in the polymer fiber matrixes of polyacrylonitrile and poly(methyl methacrylate), and CoO/Co/carbon nanofibers (CoO/Co/CNFs) composites with hollow structure was obtained after carbonization. The experimental results show that Co exists in the form of Co<sup>0</sup> and Co<sup>2+</sup> in the CoO/Co/CNFs. Using the CoO/Co/CNFs as Fenton catalysts and Rhodamine B as a simulated pollutant, the degradation rate of the pollutant could reach 95 % within 10 min. After five cyclic degradation tests, the degradation rates only slightly decreased. In addition, The (CoO/Co/CNFs)/PMS system also showed a remarkable ability to degrade methylene blue.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"22 1","pages":""},"PeriodicalIF":6.3000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"ZIF-67 as the Co source for the preparation of composite hollow CoO/Co/carbon nanofibers and their application in advanced oxidation process\",\"authors\":\"Haowei Sun, Qiaohong Peng, Guangzhen Li, Zheng Chen, Xiaoyu Huang, Hua Yuan\",\"doi\":\"10.1016/j.apsusc.2024.161840\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Advanced oxidation technology based on sulfate radical has great potential in the oxidation removal of refractory organic pollutants. Carbon materials with higher surface area, which are utilized to support transition metal catalyst such as Co, can effectively inhibit metal leaching and reduce the degree of secondary pollution. Herein, ZIF-67 as a Co source was doped in the polymer fiber matrixes of polyacrylonitrile and poly(methyl methacrylate), and CoO/Co/carbon nanofibers (CoO/Co/CNFs) composites with hollow structure was obtained after carbonization. The experimental results show that Co exists in the form of Co<sup>0</sup> and Co<sup>2+</sup> in the CoO/Co/CNFs. Using the CoO/Co/CNFs as Fenton catalysts and Rhodamine B as a simulated pollutant, the degradation rate of the pollutant could reach 95 % within 10 min. After five cyclic degradation tests, the degradation rates only slightly decreased. In addition, The (CoO/Co/CNFs)/PMS system also showed a remarkable ability to degrade methylene blue.\",\"PeriodicalId\":247,\"journal\":{\"name\":\"Applied Surface Science\",\"volume\":\"22 1\",\"pages\":\"\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2024-11-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Surface Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.apsusc.2024.161840\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Surface Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.apsusc.2024.161840","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
基于硫酸根的高级氧化技术在氧化去除难降解有机污染物方面具有巨大潜力。利用具有较高比表面积的碳材料来支撑 Co 等过渡金属催化剂，可有效抑制金属浸出，降低二次污染程度。本文将 ZIF-67 作为 Co 源掺杂到聚丙烯腈和聚甲基丙烯酸甲酯的聚合物纤维基体中，碳化后得到了具有中空结构的 CoO/Co/碳纳米纤维（CoO/Co/CNFs）复合材料。实验结果表明，Co 在 CoO/Co/CNFs 中以 Co0 和 Co2+ 的形式存在。以 CoO/Co/CNFs 为 Fenton 催化剂，以罗丹明 B 为模拟污染物，10 分钟内污染物的降解率可达 95%。经过五次循环降解试验后，降解率仅略有下降。此外，(CoO/Co/CNFs)/PMS 系统对亚甲基蓝的降解能力也非常显著。
ZIF-67 as the Co source for the preparation of composite hollow CoO/Co/carbon nanofibers and their application in advanced oxidation process
Advanced oxidation technology based on sulfate radical has great potential in the oxidation removal of refractory organic pollutants. Carbon materials with higher surface area, which are utilized to support transition metal catalyst such as Co, can effectively inhibit metal leaching and reduce the degree of secondary pollution. Herein, ZIF-67 as a Co source was doped in the polymer fiber matrixes of polyacrylonitrile and poly(methyl methacrylate), and CoO/Co/carbon nanofibers (CoO/Co/CNFs) composites with hollow structure was obtained after carbonization. The experimental results show that Co exists in the form of Co0 and Co2+ in the CoO/Co/CNFs. Using the CoO/Co/CNFs as Fenton catalysts and Rhodamine B as a simulated pollutant, the degradation rate of the pollutant could reach 95 % within 10 min. After five cyclic degradation tests, the degradation rates only slightly decreased. In addition, The (CoO/Co/CNFs)/PMS system also showed a remarkable ability to degrade methylene blue.
期刊介绍：
Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
