Xu Xinru, Kuang Guochen, Jiang Xiao, Wei Shuoming, Wang Haiyuan, Zhang Zhen
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
National Demonstration Center for Chemistry and Chemical Engineering Education, Tianjin University, Tianjin 300350, China.
Materials (Basel). 2024 Jun 5;17(11):2750. doi: 10.3390/ma17112750.
Advanced oxidation processes (AOPs) represent one of the most promising strategies to generate highly reactive species to deal with organic dye-contaminated water. However, developing green and cost-effective catalysts is still a long-term goal for the wide practical application of AOPs. Herein, we demonstrated doping cobalt in porous carbon to efficiently catalyze the oxidation of the typically persistent organic pollutant rhodamine B, via multiple reactive species through the activation of peroxymonosulfate (PMS). The catalysts were prepared by facile pyrolysis of nanocomposites with a core of cobalt-loaded silica and a shell of phenolic resin (Co-C/SiO). It showed that the produced O could effectively attack the electron-rich functional groups in rhodamine B, promoting its molecular chain breakage and accelerating its oxidative degradation reaction with reactive oxygen-containing radicals. The optimized Co-C/SiO catalyst exhibits impressive catalytic performance, with a degradation rate of rhodamine B up to 96.7% in 14 min and a reaction rate constant () as high as 0.2271 min, which suggested promising potential for its practical application.
高级氧化工艺（AOPs）是生成高活性物种以处理有机染料污染水的最具前景的策略之一。然而，开发绿色且具有成本效益的催化剂仍是AOPs广泛实际应用的长期目标。在此，我们展示了通过负载钴的二氧化硅核和酚醛树脂壳（Co-C/SiO）的纳米复合材料的简便热解制备催化剂，该催化剂通过过一硫酸盐（PMS）的活化，经由多种活性物种高效催化典型的持久性有机污染物罗丹明B的氧化。结果表明，生成的O可有效攻击罗丹明B中富含电子的官能团，促进其分子链断裂并加速其与含活性氧自由基的氧化降解反应。优化后的Co-C/SiO催化剂表现出令人印象深刻的催化性能，罗丹明B在14分钟内的降解率高达96.7%，反应速率常数（）高达0.2271 min，这表明其具有良好的实际应用潜力。
