Effects of Heat Treatment Temperature on Photocatalytic Activity of TiO2/SiO2 Composite Aerogels
Source abstract
Abstract
采用溶胶–凝胶法在常压并经不同温度热处理制备了TiO 2 /SiO 2 复合气凝胶光催化剂, 利用XRD、TGA和BET等手段对其微观结构进行表征, 以甲基橙溶液光催化降解实验评价其光催化性能, 研究了热处理温度对TiO 2 /SiO 2 复合气凝胶的微观结构及光催化性能影响规律. 结果表明: 随着热处理温度升高, TiO 2 /SiO 2 复合气凝胶中锐钛矿结晶度升高, 晶粒尺寸增大, 比表面积减小, 使TiO 2 /SiO 2 复合气凝胶对甲基橙溶液的光催化降解活性呈现先升后降的变化趋势. 当热处理温度为700℃左右, 紫外光照20 min TiO 2 /SiO 2 复合气凝胶对甲基橙溶液的降解率达到95.4%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Aerogels and thermal insulation · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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