Surface properties and visible light activity of W-TiO2 photocatalysts prepared by surface impregnation and sol–gel method

2012 ◽  
Vol 117-118 ◽  
pp. 351-359 ◽  
Author(s):  
Ewelina Grabowska ◽  
Janusz W. Sobczak ◽  
Maria Gazda ◽  
Adriana Zaleska
Keyword(s):  
Visible Light ◽  
Surface Properties ◽  
Sol Gel ◽  
Tio2 Photocatalysts ◽  
Gel Method ◽  
Sol Gel Method ◽  
Surface Impregnation ◽  
Light Activity

The Sol–gel method synthesis of Bi4NbO8Cl with (001) facets exposed for high visible-light activity

2019 ◽  
Vol 30 (8) ◽  
pp. 7907-7915 ◽  
Author(s):  
Guangda Ni ◽  
Yanqing Li ◽  
Huimin Chen ◽  
Zeyan Wang ◽  
Xiaoyan Qin ◽  
...  
Keyword(s):  
Visible Light ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Light Activity

Visible-Light Activity Evaluation of p-n Junction Photocatalyst NiO/TiO2 Prepared by Sol-Gel Method

2010 ◽  
Vol 152-153 ◽  
pp. 441-449 ◽  
Author(s):  
Wei Liu ◽  
Shi Fu Chen
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Oxidation ◽  
Raw Materials ◽  
Sol Gel ◽  
Visible Region ◽  
Tetrabutyl Titanate ◽  
Gel Method ◽  
Sol Gel Method ◽  
Light Activity

P-N junction photocatalyst NiO/TiO2 photoexcited by visible light was prepared by sol-gel method using Ni(NO3)2•6H2O and tetrabutyl titanate [Ti(OC4H9)4] as the raw materials. The p-n junction photocatalyst NiO/TiO2 was characterized by UV-Vis diffuse reflection spectrum, fluorescence spectra (FL), X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). UV-Vis spectrum showed that the absorption wavelength range of NiO/TiO2 is extended to the visible region, making it an effective photocatalyst photoexcited by visible light. This was demonstrated by photocatalytic reduction of Cr2O72- and photocatalytic oxidation of methyl orange (MO) under visible-light (λ>400 nm) irradiation. Doped-NiO effectively suppressed the phase transformation of anatase to rutile and the growth of titania crystallites. The optimum percentage of doped NiO is 0.5% (mole ratio of Ni/Ti). Effects of heat treatment on the photocatalytic activity of p-n junction photocatalyst NiO/TiO2 were investigated. The mechanisms of influence on the photocatalytic activity were also discussed by the p-n junction principle.

Visible light photodegradation of phenol on MWNT-TiO2 composite catalysts prepared by a modified sol–gel method

2005 ◽  
Vol 235 (1-2) ◽  
pp. 194-199 ◽  
Author(s):  
Wendong Wang ◽  
Philippe Serp ◽  
Philippe Kalck ◽  
Joaquim Luís Faria
Keyword(s):  
Visible Light ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Composite Catalysts

scholarly journals Novel N-doped ZrO2 with enhanced visible-light photocatalytic activity for hydrogen production and degradation of organic dyes

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 6752-6758 ◽  
Author(s):  
Yuanyang Wang ◽  
Yinghua Zhang ◽  
Haiqiang Lu ◽  
Yanxin Chen ◽  
Zhenmin Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Nitrogen Source ◽  
Organic Dyes ◽  
Low Cost ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Visible Light Photocatalytic

Two new types of N-doped ZrO2 photocatalysts ZON and AZON have been synthesized using ethylenediamine as the nitrogen source by a facile and low-cost sol–gel method.

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