论文部分内容阅读
制备了有序介孔碳-氧化钛吸附-光催化剂,利用可见光高效降解水中苯酚.为去除水中高浓度苯酚,设计了吸附-光催化循环,即暗条件吸附8h,分离催化剂和将固体催化剂置于可见光下辐照8h.经过10次循环,水中高浓度苯酚(200mg/L)几乎可被完全降解.详细讨论了TiO2晶格中非金属掺杂、介孔碳壁对TiO2纳米颗粒聚集的阻抑作用、介孔孔道吸附苯酚性能等因素对吸附-光催化剂性能的影响.有序介孔碳-氧化钛复合体有效地结合了物理吸附和光化学降解技术,有望用于降解水中难生物降解的高浓度有机污染物.
An orderly mesoporous carbon-titania adsorption-photocatalyst was prepared and the phenol in water was efficiently degraded by visible light.In order to remove the high concentration of phenol in water, an adsorption-photocatalysis cycle was designed, which was dark condition adsorption 8h, catalyst separation and solid catalyst placement Under irradiation of visible light for 8h, the high concentration of phenol (200mg / L) in water was almost completely degraded after 10 cycles.The effects of nonmetal doping, mesoporous carbon wall on the aggregation of TiO2 nanoparticles were discussed in detail Inhibition of the adsorption of phenolic mesoporous channels and other factors on the performance of the adsorption - photocatalytic performance of ordered mesoporous carbon - titanium oxide complex effectively combines the physical adsorption and photochemical degradation technology, is expected to be used for degradation of biodegradable water difficult High concentrations of organic pollutants.