环境工程学报2016，Vol.10Issue(10)：5600-5604,5.DOI:10.12030/j.cjee.201504203
锰氧化物八面体分子筛活化过一硫酸氢盐降解酸性橙7
Heterogeneous activation of peroxymonosulfate by cryptomelane type manganese oxide for Acid Orange 7 degradation in aqueous solutions
摘要
Abstract
Cryptomelane-type manganese oxide,OMS-2,was prepared by a solvent-free process,and characterized by X-ray diffraction,scanning electron microscopy,N2 adsorption/desorption isotherms,and fourier transform infrared spectroscopy.The activity and stability of the catalyst were tested for degradation of Acid Orange 7 (AO7) in the presence of peroxymonosulfate.OMS-2 exhibited the typical cryptomelane phase with a nanorod morphology,and had a surface area of 129 m2 · g-1 and crystallite size of 11 nm.The catalyst was quite active for AO7 degradation,with production of sulfate radicals;AO7 was completely decolorized within 10 min due to the destruction of its conjugate structure and naphthaquinone ring.The catalyst also exhibited a high stability over ten cycles.关键词
氧化锰八面体分子筛/过一硫酸氢盐/酸性橙7/降解Key words
cryptomelane type manganese oxide/peroxymonosulfate/Acid Orange 7/degradation分类
资源环境引用本文复制引用
熊易玄,柯雪珍,陈成,徐爱华..锰氧化物八面体分子筛活化过一硫酸氢盐降解酸性橙7[J].环境工程学报,2016,10(10):5600-5604,5.基金项目
国家自然科学基金资助项目(21207015) （21207015）
