高等学校化学学报Issue(7)：1480-1483,4.DOI:10.7503/cjcu20140176
光量热法初探甲基橙光催化原位降解过程
Primary Photocalorimetry Investigation of the In-situ Photocatalytic Process of Methyl Orange Degradation
摘要
Abstract
Ag@ AgCl photocatalyst was prepared by reduction of AgCl precursor at room temperature, and characterised by X-ray powder diffraction(XRD) and field-emission scanning electron microscope(FE-SEM). A novel photoreaction-microcalorimetry was designed and employed to obtain the on-line thermodynamic and kinetic informations of photocatalysis of methyl orange over Ag@ AgCl. The results showed that the degradation process went through an initial endothermic reaction and followed by an exothermic stage which finally kept a constant exothermic rate for at least 4 h. The heat effects of ab, ac, and ad stages were -0. 2609, 2. 5845 and 40. 7289 J, respectively. Meanwhile, the steady rate of exothermic platform, the stage of cd, is 2. 581 mJ/ s. The microscopic mechanism of photodegradation was discussed in detail.关键词
可见光催化/Ag AgCl/光量热法/甲基橙/光降解机理Key words
Photocatalysis under visible-light/Ag AgCl/Photocalorimetry/Methyl orange/Photodegrada-tion mechanism分类
化学化工引用本文复制引用
李星星,黄在银,范高超,吴烨楠,谭学才..光量热法初探甲基橙光催化原位降解过程[J].高等学校化学学报,2014,(7):1480-1483,4.基金项目
国家自然科学基金(批准号:20963001,21273050)资助. Supported by the National Natural Science Foundation of China(Nos.20963001,21273050) （批准号:20963001,21273050）
