搜索结果: 1-15 共查到“地质学 TiO2”相关记录36条 . 查询时间(0.109 秒)
随着工业的进步，水污染问题越来越严重，尤其是工业污水，印染污水是工业污水排放的主要贡献者。印染污水具有碱性强、色度和COD值高，可生化性差、具有难闻的刺激性气味等特点，属于工业上的难去除污水 [1]。近年来，运用于印染废水处理常见的主要方法仍然是化学、物理和生物三大类。其中物理吸附法已经得到了普遍应用，活性炭是最常用的，因为其具有大量的微孔结构，巨大的内比表面积，对各种染料都表现出很强的吸附作用，...
Preparation of Nano-TiO2/Fly Ash Beads Composite Material and Photocatalytic Properties
Composite Fly Ash Bead Hydrolysis Nano-TiO2 Photocatalytic
2011/11/14
Using TiCl4 as the titanium source, urea as the precipitating agent, nano-TiO2/fly ash beads composite materials were prepared by hydrolysis-precipitation method. The materials were characterized by S...
Research on Photocatalysis Properties of Nano TiO2/Mica Composite Material Prepared by the Method of Hydrolysis–Precipitation
Composite Material Hydrolysis – Precipitation Photocatalyst TiO2/M
2011/11/14
Using muscovite as the carrier, TiCl4 as the source of titanium, urea as the precipitating agent, nano-TiO2/mica photocatalyst (TiO2/M) was prepared by the method of hydrolysis–precipitation. The as -...
Preparation and Photocatalytic Activity of N-TiO2/Sepiolite Nanocomposite
Methylene Blue Modification Photocatalyst Speiolite Titanium Dioxide
2011/11/22
To utilize visible light and separate of TiO2 nanoparticles more efficiently in photocatalytic reactions, nitrogen doped TiO2/sepiolite composites (N-TiO2/sep) with different nitrogen contents were pr...
Preparation and Characterization of N Doped TiO2/ Sepiolite Composite Materials
Modification Photocatalytic Speiolite Titanium Dioxide
2011/11/22
Nitrogen doped TiO2/sepiolite composite materials (N-TiO2/sep) with different nitrogen contents were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), scanning electron micros...
Synthesis and Characterization on ATP/TiO2/PANI Core-Shell Nanocomposites
ATP/TiO2/PANI Core-Shell Nanocomposites Oxidative Polymerization
2011/11/22
Conducting attapulgite/titania/polyaniline/ (ATP/TiO2/PANI) core-shell nanocomposites (CSNs) were synthesized via oxidative polymerization of aniline after the surface modification of the ATP carried ...
Zn-Doped Palygorskite Loaded TiO2 for Visible-Light Active Catalysts
Catalyst Palygorskite TiO2 Visible Light
2011/11/14
Zn-doped palygorskite loaded TiO2 for visible-light active catalysts were prepared by the method of liquid ion exchange and precipitation. XRD and SEM measurments show that the titanium dioxide was lo...
硅藻土基纳米TiO2降解甲醛的实验研究
硅藻土基纳米TiO2 甲醛 降解
2012/3/15
对比研究了硅藻土和硅藻土基纳米二氧化钛光催化剂对甲醛的吸附降解特点.通过改变反应器内甲醛的初始浓度、反应温度、光照强度和相对湿度,研究了涂覆量为62.5 g·m-2的硅藻土基纳米TiO2光催化剂对甲醛气体的降解效果.研究结果表明,硅藻土只对甲醛有一定的吸附作用,而硅藻土基纳米TiO2对甲醛具有持续的吸附和降解作用.反应器内甲醛初始浓度越高,降解时间越长;初始浓度为6.0×10-3 mg·L-1的甲...
纳米TiO2/凹凸棒石光催化复合材料的制备及其动力学
凹凸棒石 二氧化钛 复合材料 光催化
2011/10/17
采用溶胶W22;凝胶法制备了纳米TiO2/凹凸棒石光催化复合材料，并对其进行了表征. XRD 结果表明，复合材料为锐钛矿相和金红石相的混晶结构，HRTEM 和SEM 图像显示，在凹凸棒石表面均匀负载了一层纳米TiO2 颗粒. 实验考察了煅烧温度、催化剂用量及材料吸附性能对其光催化性能的影响，结果表明，600℃下煅烧制备的复合材料中TiO2 晶粒尺寸为16 nm，锐钛矿相含量87%. 复合材料...
Synthesis and Characterization of Attapulgite Clay Coated Ag/AgBr/TiO2 Visible Light Photocatalyst
Ag/AgBr/TiO2 Attapulgite Clay Photocatalytic
2011/11/14
Attapulgite clay coated Ag/AgBr/TiO2 visible light photocatalyst was prepared by an impregnation-deposition-precipitation method. The catalyst was characterized via powder X-ray diffraction (XRD), TEM...
为提高光催化剂的稳定性, 选取硅藻土为载体, 以钛酸四异丙酯为前驱物, 采用溶胶-凝胶法制备了 TiO2/ 硅藻土光催化剂, 并利用XRD、SEM、FT-IR等技术对其进行表征.以蒽醌染料弱酸性艳蓝RAW为目标降解物,考察了TiO2/硅藻土的光催化活性、最佳 pH 值范围及催化剂重复使用对光催化活性的影响.结果表明,所制备的TiO2 为锐钛矿和金红石混晶型,平均粒径11nm, 通过控制硅藻土加入量...
用醇盐水解法、硫酸亚铁-硝酸钾氧化法制备TiO2光催化剂、坡缕石/TiO2复合光催化剂和坡缕石/磁性铁氧化物/ TiO2复合光催化剂. 通过XRD、TEM、UV-Vis和MS分析光催化剂的物相组成、形貌特征、对紫外可见光的漫反射以及磁化率，并以甲基橙为处理对象，对比研究了TiO2光催化剂、坡缕石/ TiO2复合光催化剂和坡缕石/磁性铁氧化物/ TiO2复合光催化剂的光催化效果. 结果表明：坡缕石/...
采用溶胶-凝胶法制备了以颗粒活性炭(GAC)为载体的纳米TiO2/AC复合催化剂,并将其用于腐殖酸的光催化降解.动力学研究表明,TiO2/AC光催化降解腐殖酸过程可用Langmuir-Hinshelwood(L-H)动力学模式表示.L-H表观反应速率常数KLH=0.1124mg·L-1·min-1,吸附平衡常数K*=0.3402L·mg-1.活性炭负载TiO2对腐殖酸的光催化降解过程,体现了活性炭...
利用自制光催化气体反应器体系，以活性炭纤维负载TiO2作催化剂，在紫外光照射下模拟降解室内污染气体甲醛，测试了活性炭纤维负载TiO2催化剂的催化活性，探讨了紫外光光强、催化剂的酸度、反应器内湿度及反应时间等控制反应的主要因素对甲醛降解率的影响。结果表明，活性炭纤维与TiO2的协同作用大大提高了对甲醛的降解效果；紫外光强增倍对甲醛降解率有一定提高，但提高幅度仅为11.71%；活性炭纤维用pH=5的T...