Enhanced visible-light photocatalytic activity for selective oxidation of amines into imines over TiO2(B)/anatase mixed-phase nanowires

2015 ◽  
Vol 349 ◽  
pp. 343-352 ◽  
Author(s):  
Jun Dai ◽  
Juan Yang ◽  
Xiaohan Wang ◽  
Lei Zhang ◽  
Yingjie Li
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Selective Oxidation ◽  
Mixed Phase ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Influence of Ytterbium Doping on the Visible Light Photocatalytic Activity of Mixed Phase TiO2 Nanoparticles

2019 ◽  
Vol 807 ◽  
pp. 18-25
Author(s):  
Fu Chang Peng ◽  
Qi Lai ◽  
Can Yu Zhong ◽  
Yan Cui ◽  
Xian Jie Liao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Phase Transfer ◽  
Photogenerated Electron ◽  
Mixed Phase ◽  
Fluorescent Light ◽  
Experimental Conditions ◽  
Visible Light Photocatalytic Activity ◽  
Ytterbium Doping ◽  
Visible Light Photocatalytic

The TiO2 nanoparticles with different Yb doping amount were prepared by a facile sol-gel method. The samples were characterized by XRD, TEM, XPS, UV-Vis, and PL, etc. The influence of Yb-doping on structure and visible light photocatalytic activity of mixed phase TiO2 was evaluated by photocatalytic degradation of methylene blue (MB) under the irradiation of fluorescent lamp. The results show that ytterbium appeared two kinds of Yb3+ and Yb2+ valence state on the surface of TiO2. Ytterbium doping can restrain the phase transfer from anatase to rutile, prevent the grain growth, and increase the surface hydroxyl content. Appropriate amount of Yb doping and the proportions of rutile and anatase mixed phase can effectively inhibit the recombination of photogenerated electron and hole, expand the wavelength range of absorption spectrum, and improve the photocatalytic performance of TiO2. Meanwhile, the photocatalytic activity of the Yb-TiO2 samples was the best under the irradiation of fluorescent light when the sintered temperature T=500°C and n(Yb):n(Ti)=0.009, it was 95.2% within 6 h and significantly higher than 56.4% of pure TiO2 under the same experimental conditions.

Non-plasmonic metal nanoparticles as visible light photocatalysts for the selective oxidation of aliphatic alcohols with molecular oxygen at near ambient conditions

2016 ◽  
Vol 52 (77) ◽  
pp. 11567-11570 ◽  
Author(s):  
Tana Tana ◽  
Xiao-Wei Guo ◽  
Qi Xiao ◽  
Yiming Huang ◽  
Sarina Sarina ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Metal Nanoparticles ◽  
Molecular Oxygen ◽  
Selective Oxidation ◽  
Aliphatic Alcohols ◽  
Product Selectivity ◽  
Ambient Conditions ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Non-plasmonic Pd NPs and Pt NPs exhibit superior visible light photocatalytic activity and distinctly different product selectivity in the oxidation of aliphatic alcohols.

scholarly journals Green synthesis of PbCrO4 nanostructures using gum of ferula assa-foetida for enhancement of visible-light photocatalytic activity

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40934-40940 ◽  
Author(s):  
Rahele Zhiani ◽  
Ali Es-haghi ◽  
Seyed Mohsen Sadeghzadeh ◽  
Farzaneh Shamsa
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Green Synthesis ◽  
Selective Oxidation ◽  
Environmentally Friendly ◽  
Organic Transformations ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Photocatalytic selective oxidation has attracted considerable attention as an environmentally friendly strategy for organic transformations.

Facile formation of mesoporous structured mixed-phase (anatase/rutile) TiO2 with enhanced visible light photocatalytic activity

2018 ◽  
Vol 54 (1) ◽  
pp. 58-61 ◽  
Author(s):  
Weiwei Fu ◽  
Guode Li ◽  
Yu Wang ◽  
Shangjing Zeng ◽  
Zhuojun Yan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Calcination Temperature ◽  
Mixed Phase ◽  
Rutile Tio2 ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

A new mesoporous anatase/rutile TiO2 nanocomposite was synthesized at a lower calcination temperature, and exhibited a higher visible light photocatalytic activity.

Enhancement of the visible-light photocatalytic activity of CeO2 by chemisorbed oxygen in the selective oxidation of benzyl alcohol

2019 ◽  
Vol 43 (19) ◽  
pp. 7355-7362 ◽  
Author(s):  
Zhiqing Cui ◽  
Hongjian Zhou ◽  
Guozhong Wang ◽  
Yunxia Zhang ◽  
Haimin Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Photocatalytic Oxidation ◽  
Visible Light Photocatalytic Activity ◽  
Oxidation Of Benzyl Alcohol ◽  
Chemisorbed Oxygen ◽  
Visible Light Photocatalytic

Enriched chemisorbed oxygen on CeO2 significantly improved the activity of photocatalytic oxidation of benzyl alcohol under visible light.

Crystalline Mixed Phase (Anatase/Rutile) Mesoporous Titanium Dioxides for Visible Light Photocatalytic Activity

2014 ◽  
Vol 27 (1) ◽  
pp. 6-17 ◽  
Author(s):  
Zhu Luo ◽  
Altug S. Poyraz ◽  
Chung-Hao Kuo ◽  
Ran Miao ◽  
Yongtao Meng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Mixed Phase ◽  
Visible Light Photocatalytic Activity ◽  
Titanium Dioxides ◽  
Visible Light Photocatalytic
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