磁性石墨烯负载金属催化剂的制备及加氢脱氯机理研究

项目名称： 磁性石墨烯负载金属催化剂的制备及加氢脱氯机理研究

项目编号： No.21207109

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 樊光银

作者单位： 西华师范大学

项目金额： 25万元

中文摘要： 氯代苯酚类有机物是危害环境的顽固污染物，催化降解是处理这类污染物的有效途径。本项目拟研究石墨烯/四氧化三铁复合载体负载贵金属(Pt、Pd、Rh等)催化剂制备的方法、技术和原理，以期获得性能优良的新型催化剂，并运用于催化降解处理废水中氯代苯酚类等有机污染物，系统地研究其作用机理。以石墨烯基磁性复合材料作为载体负载纳米金属催化剂，可充分发挥石墨烯的强吸附、巨大比表面积和高比表面能的性能，凸显金属纳米粒子高催化活性等特性。同时由于磁性材料的超顺磁性，外加磁场作用下实现催化剂和反应液分离，有利于催化剂回收及重复使用，因而是降解有机污染物性能优异的"绿色"催化剂。项目创新地制备新型催化剂并研究其实际应用，为处理有机废水提供新的"绿色"的方法，扩展了石墨烯这一新型二维碳材料在环境保护领域的应用，丰富了催化学科理论和内容，对解决日益严重的有机污染废水问题有十分重要的实际意义和广阔的应用前景。

中文关键词： 氯代苯酚；脱氯；贵金属；催化；

英文摘要： Chlorinated organic compounds such as chlorinated phenols are hazardous to the environment as persistent contaminants. Catalytic hydrodechlorination is an effective way to deal with such pollutants. Due to its excellent properties, the synthesis of graphene composites has already aroused researcher's enormous interest in recent years. This project aims to prepare noble metal modified magnetic graphene composites, and use the materials as catalysts for catalytic degradation of organic wastewater containing chlorinated phenols. The graphene-based magnetic composites supported precious metal catalyst has the unique physical and chemical properties, such as strong adsorption capability, large surface area, and high specific surface energy, superparamagnetic and high catalytic activity. A composite of graphene decorated with iron oxide was firstly fabricated via a solvothermal method using ethylene glycol as the solvent. The effect of reaction parameters on the morphology and texture of as-obtained products will be investigated. Appropriate size, high dispersion and uniform magnetic composite are expected to be obtained. And the precious metals (Pt, Pd, and Rh) loading on the magnetic carriers will be investigated as catalysts for the catalytic degradation of organic wastewater containing chlorinated phenols. The r

英文关键词： Chlorophenols；Hydrodechlorination；Noble metals；Catalysis；