陕西科技大学学报2017，Vol.35Issue(5)：53-60,8.
硅胶固载/N、S共掺TiO2光催化剂的表征与性能
Characterization and photocatalytic performance of silicon carrier/N ,S codoped TiO2
摘要
Abstract
The silicon carrier/N ,S codoped titanium dioxide photocatalysts were synthesized by sol-gel and hydrothermal autoclave method in situ symbiosis precursors ,using ethyl sili-cate ,butyl titanate as silicone solid precursors of TiO2 materials ,with different proportions of a mixture of sulfuric acid and nitric acid as the nitrogen and sulfur source ,and as the sol gel initiator as well .And then sintered under nitrogen atmosphere to obtain the nitrogen and sulfur codoped TiO2 photocatalyst with silica carrier (N ,S/TiO2-SiO2 ) .The phase ,morphol-ogy ,structure and microstructure of the samples were analyzed by means of DSC-TG ,XRD , XPS ,FT-IR and UV-vis methods .By means of photocatalytic degradation experiments ,the photocatalytic performance of the samples were investigaed ,in order to study the influence of doping nonmetallic elements on the modified TiO2 .The results showed that the N ,S/TiO2-SiO2 grain was in mesoporous silica skeleton structure ,successfully realized the effective of N and S codoping ,widened the light response range ,and reached the photocatalytic redshift and the purpose of efficient use of the sunlight .The samples had high purity and good crystalliza-tion conditions ,and could generate the best photocatalytic properties when the Ti/Si mole ra-tio was 1:4 ,the Ti/(N、S) mole ratio was 1:0 .05 and the sintering temperature was 700℃.关键词
氮、硫共掺杂/硅胶固载/介孔材料/光催化Key words
N/S codoping/silicon carrier/mesoporous materials/photocatalytic分类
化学化工引用本文复制引用
张超武,王夏云,张利娜,张楠,王芬..硅胶固载/N、S共掺TiO2光催化剂的表征与性能[J].陕西科技大学学报,2017,35(5):53-60,8.基金项目
国家自然科学基金项目(51171096) （51171096）
陕西省科技厅自然科学基金项目(2014JM6223) （2014JM6223）
