人工晶体学报2011，Vol.40Issue(4)：963-968,6.
Ti-FAC复合光催化剂的水热-溶胶浸渍法制备及其对水中亚甲基蓝的光催化降解研究
Preparation of Ti-FAC Composite Photocatalyst by Hydrothermal-sol Impregnation Method and Its Photocatalytic Degradation of Methylene Blue in Aqueous Solution
摘要
Abstract
Composite photocatalysts, enable to be separated from water by external magnetic field, were prepared by hydrothermal-sol impregnation method, which was composed of two steps; Firstly, Mn-Zn ferrite was loaded on activated carbon ( AC) by hydrothermal reaction to form soft magnetic activated carbon(FAC). Then, FAC was impregnated in titanium sol, and soft magnetic composite photocatalysts Ti-FAC were produced after calcination. Effects of preparation parameters on the photodegradation of methylene blue (MB) were investigated and the crystalline structure, morphology and magnetic properties of the photocatalysts were characterized by XRD.SEM and VSM. The results show that the photocatalystTi2-F(l/8) AC has the highest photocatalytic actvity, for which Mn-Zn ferrite is one-eighth of AC in quality, titanium sol impregnating FAC for twice followed by calcination at 500 ℃. Mn-Zn ferrite maintains cubic spinel structure with little aggregation in the composite catalyst. TiO2 nanoparticles with anatase phase homogeneously distribute either on AC or on Mn-Zn ferrite particles which supported on AC. The sample shows excellent soft magnetic properties and high stability,. Feasible to be completelyrecovered by an external magnetic field and keeping high photodegradation efficiency after 6 reuse cycles.关键词
TiO2/磁性活性炭/复合光催化剂/亚甲基蓝Key words
TiO2/magnetic activated carbon/composite photocatalyst/methylene blue分类
化学化工引用本文复制引用
邢新艳,赵东方,朱桂芬,刘玉民..Ti-FAC复合光催化剂的水热-溶胶浸渍法制备及其对水中亚甲基蓝的光催化降解研究[J].人工晶体学报,2011,40(4):963-968,6.基金项目
河南师范大学青年科学基金项目资助(2010qk09) （2010qk09）
河南省教育厅自然科学研究计划项目(2011B150018) （2011B150018）
