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稀土改性Ag掺杂纳米TiO2对抑制蓝藻生长的研究
光催化 纳米TiO2 蓝藻抑制
2009/9/30
利用纳米TiO2和稀土改性银掺杂纳米TiO2在太阳光照射下进行光催化抑制蓝藻的实验研究,经对实验蓝藻的光合速率、呼吸速率和蓝藻叶绿素的吸光度的测定证明,纳米二氧化钛对蓝藻生长具有一定抑制作用,但效果不好;经稀土改性银掺杂的纳米TiO2的样品,蓝藻的光合速率、呼吸速率接近为0,蓝藻吸光度值降低了88.4%,显微镜观察显示蓝藻细胞壁被破坏,说明稀土改性Ag掺杂纳米TiO2对抑制蓝藻生长效果较好.
TiO2/C光催化剂的制备及其对甲苯的光催化降解性能研究
多孔炭 TiO2 气相光催化 甲苯
2012/8/9
以不同种类颗粒状多孔炭为载体,采用溶胶-凝胶法制备TiO2溶胶,通过浸渍实现催化剂的固定,而后经过高温活化制备了负载型TiO2/C光催化剂。采用X射线衍射(XRD)、扫描电子显微镜(SEM)和FT-IR等方法对制得的光催化剂进行表征。以甲苯为目标污染物,研究了特定浓度的甲苯在不同降解条件下以及不同多孔炭负载光催化剂样品的光催化降解效果。结果表明:在紫外光的照射下,复合型TiO2/C光催化剂对甲苯具...
羧基功能化离子液体表面修饰TiO2纳米微粒的制备及结构表征
羧基功能化离子液体 TiO2纳米微粒 螯合作用 表面修饰
2008/6/11
本文用沉淀法制备了羧基功能化离子液体表面修饰半导体TiO2纳米颗粒, 并用FTIR, TEM, XRD和XPS对其结构进行了表征. 初步探讨了羧基功能化离子液体修饰TiO2纳米微粒的形成机理.
采用TiCl4液相水解法, 制备粒径在40～80 nm的锐钛型纳米TiO2. 将制得的纳米TiO2配合面包酵母菌制作复合吸附剂并用于Cu2+的吸附研究, 发现复合吸附剂量为5 g·L-1, pH≥4.0, 吸附时间40 min, [Cu2+]=10 mg·L-1的条件下, 复合吸附剂中纳米TiO2提高了面包酵母菌对Cu2+的吸附率, 即面包酵母菌和纳米TiO2对Cu2+的吸附产生了协同作用. 利用...
Preparation and Characterization of Ordered TiO2 Photocatalysts: Films and Mesoporous Structures
Preparation Characterization Ordered TiO2 Photocatalysts Mesoporous Structures
2010/4/16
Two different ordered TiO2 structures were prepared as sol-gel films coated on glass and as mesoporous structures in order to study the effect, in 2-D or in 3-D, of bulk size on photocatalytic activit...
期刊信息
篇名
Synthesis and Characterization, and Photocatalytic Activity of ZnFe2O4/TiO2 Nanocomposite
语种
英文
撰写或编译
作者
Zhihao Yuan,Lide Zhang
第一作者单位
刊物名称
J. Mater. Chem
页面
11(2001)1265-1268
出版日期
2001年
月
日
文...
Hydrothermal Synthesis, Characterization and Photocatalytic Activity of Nanosized TiO2 Based Catalysts for Rhodamine B Degradation
SiO2/TiO2 mixed oxides hydrothermal process photocatalyst rhodamine B photodegradation
2010/4/19
Nanosize crystalline TiO2 and SiO2/TiO2 mixed oxide particles as a photocatalyst for rhodamine B dye (RB) degradation in aqueous media were synthesized by a hydrothermal process at 200 °C. They were c...
Characterization of TiO2 Synthesized in Alcohol by a Sol-Gel Process: The Effects of Annealing Temperature and Acid Catalyst
Characterization of TiO2 Synthesized a Sol-Gel Process Effects of Annealing Temperature Acid Catalyst
2010/4/19
The effects of annealing temperature and hydrolysis catalyst on the crystalline form and crystallite size of TiO2 prepared by a sol-gel process were investigated. Three types of TiO2 were synthesized ...