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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor
性别：男
毕业院校：奥地利University of Graz
学位：博士
所在单位：环境学院
学科：环境工程. 环境科学. 水科学与技术
办公地点：大连理工大学环境学院
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Synthesis of manganese incorporated hierarchical mesoporous silica nanosphere with fibrous morphology by facile one-pot approach for efficient catalytic ozonation
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论文类型：期刊论文
发表时间：2016-11-15
发表刊物：JOURNAL OF HAZARDOUS MATERIALS
收录刊物：Scopus、PubMed、EI、SCIE
卷号：318
页面范围：308-318
ISSN号：0304-3894
关键字：Catalytic ozonation; Fibrous mesoporous silica nanosphere (KCC-1); Metal oxide incorporated silica nanosphere; Oxalic acid; Metal leaching
摘要：Manganese incorporated fibrous silica nanosphere (MnOx-0.013/KCC-1) was synthesized by one step hydrothermal method for the first time and its catalytic activity for ozonation of oxalic acid was studied. For comparison, manganese loaded MCM-41 (MnOx-0.013/MCM-41) was prepared by impregnation method. Various characterizations showed that the morphological, structural and textural properties of MnOx-0.013/KCC-1 were well preserved. Ozonation and catalytic ozonation by MnOx-0.013/KCC-1 and MnOx-0.013/MCM-41 led to 4, 85 and 60% reduction in TOC respectively. Furthermore, 0.05 and 1.2 mg L-1 leaching of Mn was detected from MnOx-0.013/KCC-1 and MnOx-0.013/MCM-41, which are approximately 2.0 and 42.0% of the total Mn present in MnOx-0.013/KCC-1 and MnOx-0.013/MCM-41 respectively. The high catalytic activity was attributed to the generation of hydroxyl radical. Surface hydroxyl groups investigated by using phosphates and ATR-FTIR were believed to be the active sites. Our proposed method of synthesis can be generalized for the synthesis of other metal oxides incorporated fibrous silica for environmental catalysis and other catalytic reactions. (C) 2016 Elsevier B.V. All rights reserved.