Composites of TiO2 pillared sericite: Synthesis, characterization and photocatalytic degradation of methyl orange

被引:7
|
作者
Liang, Yu [1 ,2 ]
Li, Wei [3 ]
Bei, Baohui [2 ]
Li, Chong [4 ]
He, Zetian [2 ]
Wang, Xuan [2 ]
Zhou, Run [2 ]
Ding, Hao [2 ]
Li, Shu [5 ]
机构
[1] Shenyang Univ Chem Technol, Sch Mat Sci & Technol, Shenyang 110142, Liaoning, Peoples R China
[2] China Univ Geosci Beijing, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
[3] Beijing Bldg Mat Acad Sci Res, State Key Lab Solid Waste Reuse Bldg Mat, Beijing 100041, Peoples R China
[4] Shenyang Univ Chem Technol, Coll Informat Engn, Shenyang 110142, Liaoning, Peoples R China
[5] Party Sch CPC Dalian Jinpu New Area Comm, Dalian 116100, Liaoning, Peoples R China
关键词
TiO2; Pillared sericite; Structure modification; Thermal-stability; Photocatalytic property; NANOCOMPOSITES; CLAY; MONTMORILLONITE; TEMPERATURE; RUTILE; MODEL; SIZE;
D O I
10.1016/j.clay.2023.107044
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A series of TiO2 pillared sericite nanocomposites were prepared by the sol-gel method followed by thermal treatment. Two factors, namely sericite dosage, and calcination temperature were researched to see their effects on the structure and properties of TiO2 pillared sericite nanocomposite. X-ray diffraction and nitrogen adsorption-desorption isotherms were used to analyze the changes of crystal phase, grain size and pore structure information of the generated TiO2 nanoparticles in the composite. Among all the samples, the TiO2 pillared sericite composite calcined at 800 degrees C has the best photocatalytic properties. Trapping experiment proved that the main active species are center dot O-2(-), h(+) and center dot OH in order of participation during the photodegradation of methyl orange by the prepared composite. Sericite has a synergistic role in enhancing the photocatalytic activity of TiO2 pillared sericite nanocomposite. Good photocatalytic activity, together with its availability and good recyclability, makes sericite a promising substrate in the field of photocatalysis.
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页数:11
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