欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
本文采用非离子表面活性剂聚乙烯醇（PVA）对粘土进行改性修饰,并以钛酸丁酯和盐酸分别为前驱物和酸催化剂,采用溶胶-凝胶法制备了PVA修饰疏水型纳米钛柱撑粘土材料,对其进行了比表面积（BET）、热重分析（TGA）、X射线粉末衍射（XRD）和扫描电子显微镜（SEM）表征。实验结果表明,TiO2成功地插入了粘土层间,并以锐钛矿型的晶型存在,制备的柱撑粘土复合材料仍有较好的层状结构,其比表面积较原土有明显的增加,经过PVA修饰后柱撑粘土表面的疏水性得到了提高。以甲基橙的吸附和降解为模型反应,考察了柱撑粘土的吸附性能和光催化活性,实验结果发现PVA修饰疏水型纳米钛柱撑粘土材料对甲基橙表现出了良好的吸附能力和较好的光催化活性。
英文摘要：
The surfactant modified TiO2 pillared clay was prepared by sol-gel method at certain ratio of tetra-n-butyl titanium to hydrochloric acid modified by non-ionic surfactant polyvinyl alcohol（PVA）.Thermal gravity analysis（TGA）,X-ray diffraction（XRD） and Scanning electron microscopy（SEM） were used to investigate the texture of the prepared catalyst,and its BET surface area was also measured.The results indicated that PVA-modified TiO2 pillared clay was well pillared by the anatase TiO2 and the BET surface area was enhanced substantially.The surface of PVA-modified TiO2 pillared clay became more hydrophobic after modified by PVA.The adsorption and photocatalytic performance of PVA-modified TiO2 pillared clay were also studied by using methyl orange as model organic pollutant.It was found that PVA-modified TiO2 pillared clay showed excellent adsorption ability and moderate photocatalytic activity to methyl orange.About 41% and 53% of methyl orange were adsorbed and degraded by the PVA-modified TiO2 pillared clay catalyst within 40min.
同期刊论文项目
同项目期刊论文
Adsorption and photocatalytic performance of dimethyl phthalate ester in water by organo TiO2 pillar
Structural and photocatalytic degradation characteristics of hydrothermally treated mesoporous TiO2，
Preparation and characterization of hydrophobic TiO2 pillared clay: the effect of acid hydrolysis ca
Assessment of the possible mutagenic potential in oilfield produced saline wastewater during photoel
Hydrothermal splitting of titanate fibers to single-crystalline TiO2 nanostructures with controllabl
Characterization and Photocatalytic Activity of Hydrophobic TiO2-montmorillonite photocatalysts. Deg
Preparation and characterization of highly active mesoporous TiO2 photocatalysts by hydrothermal syn
Isomer-specific bioaccumulation and trophic transfer of dechlorane plus in the freshwater food web f
Polybrominated diphenyl ethers (PBDEs ), polychlorinated biphenyles (PCBs), hydroxylated and methoxy
Synthesis and characterization of novel SiO2 and TiO2 co-pillared montmorillonite composite for adso
Polychlorinated biphenyls and organochlorinated pesticides in various bird species collected from No
Brominated flame retardants , polychlorinated biphenyls and organochlorine pesticides in bird eggs f
Bioaccumulation of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in wi
Organochlorine pesticides in the surface water and sediments of the Pearl River Estuary, South China
Brominated Flame Retardants, Polychlorinated Biphenyls, and Organochlorine Pesticides in Giant Panda
期刊信息
位置：