N-TiO_2/ACF的制备及光催化降解真丝绸染色废水研究  

Preparation of N-Doped Nano-TiO_2 Loaded on Activated Carbon Fiber for Photocatalytic Degradation of Pure Silk Dyeing Wastewater

作　　者：申国栋[1] 郭晓玲[1] 冯亚明[1] 张蓉[1] 

机构地区：[1]西安工程大学

出　　处：《纺织导报》2016年第6期87-90,共4页China Textile Leader

基　　金：陕西省科学技术研究发展计划项目(2013K09-03);陕西高校省级重点实验室科研项目(2010JS007)

摘　　要：利用扫描电镜、X射线衍射、紫外-可见漫反射等技术对采用溶胶-凝胶法制备的氮掺杂纳米TiO_2负载活性炭纤维(N-TiO_2/ACF)光催化材料进行了表征分析。以真丝绸染色废水为目标降解物,研究了光催化材料的光催化性能。研究表明:N-TiO_2/ACF光催化材料表面的N-TiO_2呈锐钛矿相,粒径约为15.3 nm,其光谱响应范围由紫外光区拓展至可见光区,吸收边带达603 nm;金卤灯照射下反应180 min,0.77 g N-TiO_2/ACF对200 m L真丝绸染色废水降解率达97.2%,2.31 g的N-TiO_2/ACF对200 mL真丝绸染色废水COD去除率达80.6%;N-TiO_2/ACF具有良好的重复使用性能。N-doped nano-TiO_2 loaded on activated carbon fiber（N-TiO_2/ACF） photocatalysts were fabricated by sol-gel-adsorption method. The structure and morphology of the photocatalysts were characterized by XRD, SEM, and UV-Vis diffuse reflectance spectra. The photocatalytic activities of the photocatalysts were evaluated by measuring the degradation of pure silk dyeing wastewater. The results showed that N-doped nano-TiO_2 particles of N-TiO_2/ACF were anatase phase, and the crystallite size of N-doped nano-Ti O_2 was about 15.3 nm. The absorption band edge of N-doped nano-TiO_2 exhibited an evident red-shift to 603 nm. Under metal halide lamp irradiation for 180 min, the degradation rate was 97.2%, when the dosing quantity of N-TiO_2/ACF is 0.77 g/200 mL, and the removal rate of COD was 80.6%, when the dosing quantity was 2.31 g/200 mL. N-TiO_2/ACF exhibited high durability for practical applications.

关 键 词：溶胶-凝胶法 N-TiO_2/ACF 可见光催化 真丝绸染色废水 

分 类 号：X791[环境科学与工程—环境工程]