Synthesis of Titanium Dioxide Nanoparticles with Mesoporous Anatase Wall and High Photocatalytic Activity

2005 ◽  
Vol 109 (11) ◽  
pp. 4947-4952 ◽  
Author(s):  
Tianyou Peng ◽  
De Zhao ◽  
Ke Dai ◽  
Wei Shi ◽  
Kazuyuki Hirao
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Titanium Dioxide Nanoparticles ◽  
High Photocatalytic Activity

Bio-templated synthesis of hierarchically ordered macro-mesoporous anatase titanium dioxide flakes with high photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15572-15578 ◽  
Author(s):  
Bing Li ◽  
Jianquan Zhao ◽  
Jing Liu ◽  
Xinyu Shen ◽  
Shaobo Mo ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
High Photocatalytic Activity ◽  
Templated Synthesis ◽  
Rose Petals

Hierarchically ordered macro-mesoporous anatase TiO2 flakes were synthesized by using rose petals and P123 as dual templates with high photocatalytic activity.

scholarly journals Rapid preparation of terbium-doped titanium dioxide nanoparticles and their enhanced photocatalytic performance

2019 ◽  
Vol 6 (10) ◽  
pp. 191077 ◽  
Author(s):  
Zhencui Wang ◽  
Yuechao Song ◽  
Xingfei Cai ◽  
Jun Zhang ◽  
Tianle Tang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Diffuse Reflectance Spectroscopy ◽  
Titanium Dioxide Nanoparticles ◽  
Earth Metal ◽  
Nitrate Hexahydrate ◽  
Doping Amount ◽  
X Ray ◽  
Low Toxicity

Further applications of photocatalysis were limited by the high recombination probability of photo-induced electron–hole pairs in traditional titanium dioxide nanoparticles (TiO 2 NPs). Herein, we modified them with rare earth metal via a facile sol–gel method, using tetrabutyl titanate as a precursor and terbium (III) nitrate hexahydrate as terbium (Tb) source. The resulting samples with different Tb doping amounts (from 0 to 2%) have been characterized by X-ray diffraction, UV–visible diffuse reflectance spectroscopy, X-ray photo-electron spectroscopy and a scanning electron microscope. The photocatalytic performance of Tb-doped TiO 2 was evaluated by the degradation of methylene blue. The effects of Tb doping amount and initial pH value of solution were investigated in detail. The composite with Tb doping amount of 1.0 wt% showed the highest photocatalytic performance. It exhibited approximately three times enhancement in photocatalytic activity with a reaction rate constant of 0.2314 h −1 when compared with that of commercial P25 (0.0827 h −1 ). In addition, it presented low toxicity on zebrafishes with 96 h-LC 50 of 23.2 mg l −1 , and has been proved to be reusable for at least four cycles without significant loss of photocatalytic activity. A probable photocatalytic mechanism of Tb-doped TiO 2 was proposed according to the active species trapping experiments. The high photocatalytic performance, excellent reusability and low toxicity of Tb-doped TiO 2 indicated that it is a promising candidate material in the future treatment of dye wastewater.

Fabrication and photocatalytic activity of electrospun nylon-6 nanofibers containing tourmaline and titanium dioxide nanoparticles

2013 ◽  
Vol 39 (6) ◽  
pp. 7143-7148 ◽  
Author(s):  
Seung-Ji Kang ◽  
Leonard D. Tijing ◽  
Bo-sang Hwang ◽  
Zhe Jiang ◽  
Hak Yong Kim ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Titanium Dioxide Nanoparticles ◽  
Nylon 6

scholarly journals Synthesis and photocatalytic activity of copper and nitrogen co-doped titanium dioxide nanoparticles

2020 ◽  
Vol 16 ◽  
pp. 102948 ◽  
Author(s):  
Voranuch Thongpool ◽  
Akapong Phunpueok ◽  
Sarawut Jaiyen ◽  
Thitaya Sornkwan
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Titanium Dioxide Nanoparticles ◽  
Doped Titanium Dioxide ◽  
Co Doped

Photoconversion of CO2 using copper-modified titanium dioxide nanoparticles

2011 ◽  
Vol 76 (11) ◽  
pp. 1335-1346 ◽  
Author(s):  
Jing Wei ◽  
Xin Tan ◽  
Tao Yu ◽  
Lin Zhao
Keyword(s):  
Titanium Dioxide ◽  
Photoelectron Spectroscopy ◽  
Titanium Dioxide Nanoparticles ◽  
Sol Gel ◽  
Chemical Properties ◽  
High Photocatalytic Activity ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Illumination ◽  
One Step

A series of copper-modified titanium dioxide (Cu/TiO2) nanoparticles were synthesized via one-step sol-gel method. The crystal structure and chemical properties were characterized using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The Cu/TiO2nanoparticles were applied to CO2photoconversion and the yield of formaldehyde was used to evaluate the photocatalytic performance. The optimum amount of copper modifying was 0.6 wt.% and the yield of formaldehyde was 946 μmol/gcatunder UV illumination for 6 h. 20 wt.% Cu/TiO2also performed a high photocatalytic activity, which yielded 433 μmol/gcatformaldehyde under UV illumination for 6 h.

Production of Titanium Dioxide Nanoparticles and Nanostructures from Dye Wastewater Sludge - Characterisation and Evaluation of Photocatalytic activity

2010 ◽  
Vol 13 (1) ◽  
Author(s):  
Ibrahim J. El Saliby ◽  
H. K. Shon ◽  
Yousef H. Okour ◽  
Saravanamuthu Vigneswaran ◽  
Meena Senthilnanthanan ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Titanium Dioxide Nanoparticles ◽  
Wastewater Sludge ◽  
Dye Wastewater

AbstractProducing a useful catalyst (TiO

scholarly journals Stannic Oxide-Titanium Dioxide Coupled Semiconductor Photocatalyst Loaded with Polyaniline for Enhanced Photocatalytic Oxidation of 1-Octene

2007 ◽  
Vol 2007 ◽  
pp. 1-6 ◽  
Author(s):  
Hadi Nur ◽  
Izan Izwan Misnon ◽  
Lim Kheng Wei
Keyword(s):  
Electrical Conductivity ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Charge Separation ◽  
Photocatalytic Oxidation ◽  
High Photocatalytic Activity ◽  
Stannic Oxide ◽  
Aqueous Hydrogen Peroxide ◽  
Semiconductor Photocatalyst ◽  
Coupled Semiconductor

Stannic oxide-titanium dioxide (SnO2–TiO2) coupled semiconductor photocatalyst loaded with polyaniline (PANI), a conducting polymer, possesses a high photocatalytic activity in oxidation of 1-octene to 1,2-epoxyoctane with aqueous hydrogen peroxide. The photocatalyst was prepared by impregnation ofSnO2and followed by attachment of PANI onto aTiO2powder to give sample PANI-SnO2–TiO2. The electrical conductivity of the system becomes high in the presence of PANI. Enhanced photocatalytic activity was observed in the case of PANI-SnO2–TiO2compared to PANI-TiO2,SnO2–TiO2, andTiO2. A higher photocatalytic activity in the oxidation of 1-octene on PANI-SnO2–TiO2thanSnO2–TiO2, PANI-TiO2, andTiO2can be considered as an evidence of enhanced charge separation of PANI-SnO2–TiO2photocatalyst as confirmed by photoluminescence spectroscopy. It suggests that photoinjected electrons are tunneled fromTiO2toSnO2and then to PANI in order to allow wider separation of excited carriers.

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