【摘要】 报道了玻璃管上负载光催化TiO2粉体对清除乙烯气体的光催化的实验研究。结果发现,玻璃管载二氧化钛粉体有较好清除乙烯的效果,当反应进行到4.5h时乙烯气体的色谱峰完全消失,即乙烯气体已经被完全清除掉,对相同处理条件下的二氧化钛粉体做XRD分析得知该条件下的二氧化钛为锐钛矿晶型。在紫外区域作吸收曲线发现光催化TiO2紫外吸收边发生蓝移,产生量子效应。更多还原

【Abstract】 This paper reports the experiment of C₂H₄ gas photocatalysis reactions activated by TiO₂ powder immobilized on the glass pipe. It reveals that the photocatalytic TiO₂ immobilized on the glass pipe favorites the degradation of C₂H₄. The peak of C₂H₄ spectrum disappears after 4.5?h’s reaction. XRD method was used to characterize the powder under the same situation. The result indicates that the crystal phase of TiO₂ is anatase. Ultraviolet absorption demonstrates that the absorption edge wavelength of photocatalytic TiO₂ becomes less, exerting quantum size effect.更多还原