掺铁蛇纹石的制备及其微波催化性能研究  

Preparation and Performance of Iron-doped Serpentine Microwave Catalytic

作　　者：严志宇[1] 马超越 谭艳艳 张欣茹 YAN Zhiyu;MA Chaoyue;TAN Yanyan;ZHANG Xinru(College of Environmental Science and Engineering,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]大连海事大学环境科学与工程学院,辽宁大连116026

出　　处：《水处理技术》2023年第3期37-40,47,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(51779023,52001042);2020年大连海事大学研究生教育教学改革项目(5YJG2020108)。

摘　　要：采用水热法成功制备出掺Fe蛇纹石催化剂,通过X射线衍射、透射电镜、红外光谱、比表面积分析和矢量网络分析对其进行了表征,并以甲基橙(MO)为废水目标污染物,测试了其微波催化过硫酸盐的活性。结果显示在最佳反应条件下MO脱色率可达97.25%;经过5次循环使用后仍具有良好微波催化性能和稳定性;通过对照实验证明微波与氧化剂和催化剂产生了协同效应,自由基淬灭实验发现·SO4-在脱色过程中发挥了主要作用。这为处理染料废水提供了新方向,为微波催化技术的实际应用提供理论基础。A Fe-doped serpentine catalyst was successfully prepared by hydrothermal method, and characterized by X-ray diffractometer, transmission electron microscopy, infrared spectroscopy, specific surface area analysis and vector network analysis. Its microwave catalytic activity for the oxidant of the persulfate was tested by methyl orange(MO), which was used as the target pollution in the wastewater. The results show that the decolorization ratio of MO can reach 97.25% under the optimum reaction conditions. After five rounds of decolorization process, the catalyst still displays excellent microwave catalytic performance and stability. The results of control experiment prove that the microwave has synergistic effect with the oxidant and the catalyst, and it can be found from the free radical quenching experiment that ·SO4-played a major role in the decolorization process. This research provides not only some new guidelines for the dye wastewater treatment but also the theoretical basis for the microwave catalysis technology.

关 键 词：微波 催化 掺Fe蛇纹石 甲基橙 

分 类 号：X703[环境科学与工程—环境工程]