Preparation of lanthanum and boron co-doped TiO2 by modified sol–gel method and study their photocatalytic activity

2014 ◽  
Vol 224 ◽  
pp. 163-170 ◽  
Author(s):  
Xi Lan ◽  
Lingzhi Wang ◽  
Boyuan Zhang ◽  
Baozhu Tian ◽  
Jinlong Zhang
Author(s):  
Chelaramani K. ◽  
Varshney R. ◽  
Bhardwaj A.

The TiO2 and Ag and Zn doped TiO2 nanoparticles were synthesized by sol-gel method.The sol-gel method is one of the versatile method to prepare doped and co-doped nanoparticles. sol gel method has emerged as simpler and better option than physical and chemical procedures as it is fast, clean and eco-friendly alternative that does not involve any costly instruments .Synthesis of doped and co-doped nanoparticles having good photocatalytic activity have great potential for the degradation of dye. We have tried to develop new effective antimicrobial reagents with good photocatalytic activities which are not resistant to disease causing microbes.


Author(s):  
Jing Wang ◽  
Zhinuo Wang ◽  
Dongyang Zhao ◽  
Yao Liang ◽  
Hualin Wang ◽  
...  

2016 ◽  
Vol 680 ◽  
pp. 193-197
Author(s):  
San Ti Yi ◽  
Si Qin Zhao

TiO2, 1%La/TiO2, 1%Ce/TiO2 and a series of Laand Ce co-doped TiO2 photocatalysts were prepared by sol-gel method. Using sol-gel method combine with hydrothermal method prepared rare earth La, Ce and nitrogen co-doped TiO2 photocatalysts. The microstructure, spectroscopy performance and ion doped form of prepared samples were characterized by X-ray powder diffraction (XRD), UV-Vis diffuse reflectance spectroscopy techniques and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of doped TiO2 were examined by measuring the photodegradation of methyl orange. The results showed that the products were all anatase TiO2 nano powder, doping Laor Cehinder the growth of TiO2 particle, further more, doping Laand Cetogether hinder the growth of TiO2 particle more effective, doping N broaden the light response range of TiO2 photocatalyst. At the same time, the photocatalytic activity results indicated that the prepared samples showed superior UV light photocatalytic activity, the sample 1% (La:Ce,9:1)-N/TiO2 showed the highest UV-vis photocatalytic activity.


2012 ◽  
Vol 12 (2) ◽  
pp. 950-954 ◽  
Author(s):  
Masoud Karimipour ◽  
J. Magnus Wikberg ◽  
Nasser Shahtahmasebi ◽  
Mahmood Rezaee Rokn Abad ◽  
M. M. Bagheri-Mohagheghi ◽  
...  

2019 ◽  
Vol 64 (1) ◽  
pp. 61-74 ◽  
Author(s):  
Behnam Khanizadeh ◽  
Morteza Khosravi ◽  
Mohammad A. Behnajady ◽  
Ali Shamel ◽  
Behrouz Vahid

In this study, La and Mg doped, and co-doped ZnO nanoparticles were prepared using the sol-gel method. The prepared samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DRS), and N2 physisorption techniques. The XRD results indicated that the prepared nanoparticles can be well adopted by the hexagonal wurtzite structure crystal and there are no second impurity peaks. Studies of the FESEM, EDX and TEM have shown that the samples have uniform spherical-like morphology with a homogenous distribution. The incorporation of La and Mg into the ZnO lattice had no effect on the morphology of the nanoparticles, but a reduction in the size of the grains (≈ 14 nm to ≈ 7 nm) was observed due to the insertion of these ions. The results of N2 physisorption indicated that there was an increase in BET surface area and pore volume for doped and co-doped samples. The results of DRS showed an increase in band gap energy and a blue shift at the absorption edge for doped and co-doped samples. The photocatalytic activity of the prepared catalysts was evaluated in the removal of RhB under UVA irradiation. The results showed that Mg5%-La5%/ZnO had the highest photoactivity (91.18 %) among all samples.


2016 ◽  
Vol 365 ◽  
pp. 57-68 ◽  
Author(s):  
Emy Marlina Samsudin ◽  
Sharifah Bee Abd Hamid ◽  
Joon Ching Juan ◽  
Wan Jefrey Basirun ◽  
Ahmad Esmaielzadeh Kandjani ◽  
...  

2008 ◽  
Vol 125 (1-2) ◽  
pp. 104-109 ◽  
Author(s):  
Xiang Li ◽  
Rongchun Xiong ◽  
Gang Wei

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