锌掺杂二氧化钛的制备及其催化降解亚甲基蓝  

Preparation of Zn-Doped Titanium Dioxide and the Photocatalytic Degradation for Methylene Blue

作　　者：昂源[1] 贺奎[1] 董全霄[1] 王万金[1] 刘博[1] 赖振峰[1] 王靖[1] 贾方方[1] 夏义兵[1] 

机构地区：[1]北京市建筑工程研究院有限责任公司北京市功能性高分子建筑材料工程技术研究中心,北京100039

出　　处：《稀有金属材料与工程》2016年第S1期360-364,共5页Rare Metal Materials and Engineering

基　　金：北京市自然科学基金(2144048)

摘　　要：利用溶胶凝胶法制备了锌掺杂二氧化钛,用XRD研究了合成产物的晶型,利用紫外-可见分光光度计研究了二氧化钛对亚甲基蓝的降解能力。结果表明:合成得到的二氧化钛均为锐钛矿型,少量锌离子掺杂并未改变二氧化钛的晶型。锌离子掺杂量占钛酸四丁酯(TBT)质量的1.2%时,二氧化钛的光响应范围和光催化能力均达到最大值,其中光响应范围扩大至420nm,较未掺杂样品红移接近40nm,在紫外光和自然光下240min后,对10mg/L的亚甲基蓝溶液的降解率分别达到97%和79%。The Zn-doped titanium dioxide samples were prepared through a sol-gel method. X-ray diffraction(XRD) was employed to characterize the crystal structure of specific products and ultraviolet-visible spectrophotometer was used to investigate the photocatalytic properties of nano titanium dioxide sols. Results indicate that the synthesized nano titanium dioxide samples are anatase crystals, revealing that a small amount of zinc ions doping does not change the crystal structure of nano titanium dioxide. When the doping amount of Zinc reaches 1.2 wt% of tetrabutyl titanate(TBT), the light response range of titanium dioxide sol expands to 420 nm, with the redshift of nearly 40 nm compared to the non-doped sample. And the degradation of 10 mg/L methylene blue solution, reaches 97% and 79% under ultraviolet light and natural light after 240 min, respectively.

关 键 词：溶胶凝胶法 锌掺杂 光催化 亚甲基蓝 

分 类 号：O643.36[理学—物理化学] TB383.1[理学—化学]