Venkatachalam N, Vinu A, Anandan S, Arabindoo Banumathi, Murugesan V
Department of Chemistry, Anna University, Chennai 600 025, India.
J Nanosci Nanotechnol. 2006 Aug;6(8):2499-507. doi: 10.1166/jnn.2006.531.
Nitrogen doped titania was prepared by low temperature sol-gel method using titanium precursor and nitrogen containing bases like triethylamine and tetramethyl ammonium hydroxide compounds. The materials were characterized by XRD, BET, SEM, XPS, DRS-UV, and FT-IR techniques. DRS-UV study substantially indicates shift of the absorption edge of TiO2 to lower energy region. The phase composition, crystallinity, specific surface area, and visible light activity of nitrogen doped titania depend upon the preparation conditions. Photocatalytic degradation of bisphenol-A in aqueous medium was investigated by TiO2 and nitrogen doped TiO2 under visible light irradiation in a batch photocatalytic reactor. The results indicate higher visible light activity for nitrogen doped TiO2 than commercial TiO2 (Degussa P25) for bisphenol-A degradation. The influence of various parameters such as initial concentration of bisphenol-A, catalyst loading and pH was examined for maximum degradation efficiency.
采用低温溶胶-凝胶法，以钛前驱体和含氮碱（如三乙胺和四甲基氢氧化铵化合物）制备了氮掺杂二氧化钛。通过X射线衍射（XRD）、比表面积测定（BET）、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）、漫反射紫外可见光谱（DRS-UV）和傅里叶变换红外光谱（FT-IR）技术对材料进行了表征。DRS-UV研究充分表明TiO₂的吸收边向低能量区域移动。氮掺杂二氧化钛的相组成、结晶度、比表面积和可见光活性取决于制备条件。在间歇式光催化反应器中，研究了TiO₂和氮掺杂TiO₂在可见光照射下对水介质中双酚A的光催化降解。结果表明，氮掺杂TiO₂对双酚A降解的可见光活性高于商用TiO₂（德固赛P25）。考察了双酚A初始浓度、催化剂负载量和pH值等各种参数对最大降解效率的影响。
Zotero 插件