可见光催化论文改性纳米二氧化钛的制备及对环境有机污染物的降解研究样本

下载后可任意编辑可见光催化论文: 改性纳米二氧化钛的制备及对环境有机污染物的降解讨论【中文摘要】纳米 TiO2 作为一种新型光催化剂,利用其光催化降解有机污染物具有无毒、 无二次污染、 经济等特点,是新一代环保技术进展的方向,但由于 TiO2 带隙能较宽只能吸收紫外光,极大地限制了其在环境净化领域的应用范围,因此经过改性技术使纳米 TiO2 在可见光区具有光催化活性已成为光催化讨论领域的重要课题。本论文着重讨论了纳米 TiO2 的离子掺杂和表面敏化改性技术及改性光催化剂在光催化降解有机污染物中的应用。分别制备了氮掺杂TiO2、 经氧化【英文摘要】As a new photocatalyst, nano dioxide titanium is non-toxic, no secondary pollution and economical in the aspect of photocatalysis degradation organics, which is the developing direction of new environment protection technology. However, due to the wide band gap of nano dioxide titanium, only can UV-light be absorbed, which highly restrained the applied range of nano dioxide titanium in the field of depollution of environment, so, through modification technology to make nano dioxide titanium absorb visible light has been the important task in the field of photocatalysis. This program mainly studied the ion doping and surface sensitization modification technology and the application of modification photocatalysts in organic photocatalysis degradation.N-doped TiO2, N-Fe co-doped TiO2 with a redox treatment and CuPcTs sensitized nanocrystalline TiO2 photocatalyst (CuPcTs/TiO2) were prepared respectively and were characterized by SEM and XRD to analysis their surface topography and crystal form. Di-2-Ethyl Hexyl Phthalate (DEHP) and pentachloraphenol (PCP) were used as simulation pollutants 下载后可任意编辑to test the photocatalysis performance of the catalyst samples.The N single-doped titanium dioxide powder was prepared by hydrolysis-precipitation process with a series of diff...