化工学报2016，Vol.67Issue(11)：4885-4891,7.DOI:10.11949/j.issn.0438-1157.20160716
活性炭纤维负载Pr3+：Y2SiO5/TiO2复合材料的制备与性能
Preparation and performance of Pr3+:Y2SiO5/TiO2 composites deposited on activated carbon fiber
摘要
Abstract
In order to improve sunlight utilization as well as to recycle and reuse photocatalyst of titanium dioxide, Pr3+:Y2SiO5/TiO2/ACF composites were prepared by sol-gel technique of anchoring upconversion fluorescent material and nano-titanium dioxide on activated carbon fiber (ACF). Structures and properties of the Pr3+:Y2SiO5/TiO2/ACF composites were characterized by XRD, FT-IR, SEM, FS, and UV-vis DRS. Photocatalytic activity of the composites in the visible light region was evaluated with methylene blue solution as model pollutant and studied the effect of fabrication conditions such as calcination temperature and number of coating layers. The experimental results showed that TiO2 in Pr3+:Y2SiO5/TiO2/ACF composite contained both anatase (34.1%) and rutile (65.9%) when prepared by double coating and 800℃ calcination. This composite had the highest visible-light photocatalytic activity which degraded methylene blue (15 mg·L−1) high as 93.8% in 12h. The photodegradation followed pseudo first order kinetics with reaction rate constant is 0.2471 h−1. Pr3+:Y2SiO5/TiO2/ACF composite remained degradation rate above 75% after recycled and regenerated for use four times.关键词
上转换/纳米TiO2/复合材料/吸附/降解/再生Key words
upconversion/nano-titanium dioxide/composites/adsorption/degradation/regeneration分类
资源环境引用本文复制引用
徐萌川,王亚淼,杨毅,焦岩,刘颖,颜学武..活性炭纤维负载Pr3+：Y2SiO5/TiO2复合材料的制备与性能[J].化工学报,2016,67(11):4885-4891,7.基金项目
江苏省环境净化材料工程技术研究中心开放基金项目（KFK1504）；江苏省产学研前瞻性联合研究项目（BY2016004-02）；江苏高校优势学科建设工程资助项目(PAPD)。@@@@Foundation item：supported by the Open Foundation of China Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials (KFK1504), the Industry-Academia-Research Joint Innovation Fund of Jiangsu Province (BY2016004-02) and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions （PAPD）
