Surface modification of nanoparticles with octadecyl trichlorosilane and its effects on photocatalytic activity

2013 ◽  
Vol 8 (3) ◽  
pp. 115-118
Author(s):  
Jianhua Qian ◽  
Quanliang Ma ◽  
Jiasheng Xu
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Octadecyl Trichlorosilane

scholarly journals Facile Preparation of Efficient WO3Photocatalysts Based on Surface Modification

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Min Liu ◽  
Hongmei Li ◽  
Yangsu Zeng
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Impregnation Method ◽  
Light Spectra ◽  
Simple Strategy ◽  
Visible Light Active ◽  
Efficient Charge ◽  
Surface Modified

Tungsten trioxide (WO3) was surface modified with Cu(II) nanoclusters and titanium dioxide (TiO2) nanopowders by using a simple impregnation method followed by a physical combining method. The obtained nanocomposites were studied by scanning electron microscope, X-ray photoelectron spectroscopy spectra, UV-visible light spectra, and photoluminescence, respectively. Although the photocatalytic activity of WO3was negligible under visible light irradiation, the visible light photocatalytic activity of WO3was drastically enhanced by surface modification of Cu(II) nanoclusters and TiO2nanopowders. The enhanced photocatalytic activity is due to the efficient charge separation by TiO2and Cu(II) nanoclusters functioning as cocatalysts on the surface. Thus, this simple strategy provides a facile route to prepare efficient visible-light-active photocatalysts for practical application.

Surface modification of Na-K 2 Ti 6 O 13 photocatalyst with Cu(II)-nanocluster for efficient visible-light-driven photocatalytic activity

2018 ◽  
Vol 220 ◽  
pp. 50-53 ◽  
Author(s):  
Azam khan ◽  
Umair Alam ◽  
Danish Ali ◽  
Detlef Bahnemann ◽  
M. Muneer
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Visible Light ◽  
Visible Light Driven

Reducing the Photocatalytic Activity of Zinc Oxide Quantum Dots by Surface Modification

2009 ◽  
Vol 92 (9) ◽  
pp. 2083-2088 ◽  
Author(s):  
Jinfeng Wang ◽  
Takuya Tsuzuki ◽  
Lu Sun ◽  
Xungai Wang
Keyword(s):  
Quantum Dots ◽  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Surface Modification

Controllable synthesis of phosphate-modified BiPO4 nanorods with high photocatalytic activity: surface hydroxyl groups concentrations effects

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99712-99721 ◽  
Author(s):  
Yan Li ◽  
Yawen Wang ◽  
Yu Huang ◽  
Junji Cao ◽  
Wingkei Ho ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Photocatalytic Performance ◽  
High Photocatalytic Activity ◽  
Hydroxyl Groups ◽  
Controllable Synthesis ◽  
Surface Hydroxyl ◽  
Methylene Orange ◽  
Surface Hydroxyl Groups

Surface modification by phosphate efficiently improves the photocatalytic performance of BiPO4 for the degradation of methylene orange (MO), by enhancing the concentration of surface hydroxyl groups and improving its hydrophilicity.

Surface Modification of the ZnO Nanoparticles with γ-Aminopropyltriethoxysilane and Study of Their Photocatalytic Activity, Optical Properties and Antibacterial Activities

2016 ◽  
Vol 14 (3) ◽  
pp. 785-794 ◽  
Author(s):  
Nurun Nahar Rabin ◽  
Jannatul Morshed ◽  
Hashi Akhter ◽  
Md. Saidul Islam ◽  
Md. Asjad Hossain ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Zno Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Dye Degradation ◽  
Antibacterial Activities ◽  
Bet Analysis ◽  
Modified Zno Nanoparticles ◽  
Grafted Nanoparticles ◽  
Surface Modified

Abstract Surface modification of Zinc oxide nanoparticles (ZnO) with γ-aminopropyltriethoxy silane (APTES) was investigated. Successful surface modification of the nanoparticles was confirmed experimentally by X-ray Photoelectron Spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR). The effect of the surface modifier concentration on the grafting density and surface area was studied by CHN elemental analysis and Brunauer–Emmett–Teller (BET) analysis. The photocatalytic activity and UV shielding ability of the surface-modified particles prepared in water-ethanol solvent in the presence of the surface modifiers were compared to those of non-modified particles. As a case study, It was observed by methylene blue (MB) dye degradation experiment that the photocatalytic activity in the presence of modified nanoparticles was lower than that observed with non-modified ZnO nanoparticles. Dispersion stability tests visually showed that APTES grafted nanoparticles had acquired better stability than non-modified ZnO nanoparticles in aqueous solution.

Surface modification of TiO2 with g-C3N4 for enhanced UV and visible photocatalytic activity

2015 ◽  
Vol 631 ◽  
pp. 328-334 ◽  
Author(s):  
Juying Lei ◽  
Ying Chen ◽  
Fan Shen ◽  
Lingzhi Wang ◽  
Yongdi Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Visible Photocatalytic Activity

Ion coordination significantly enhances the photocatalytic activity of graphitic-phase carbon nitride

2014 ◽  
Vol 43 (22) ◽  
pp. 8178-8183 ◽  
Author(s):  
Honglin Gao ◽  
Shicheng Yan ◽  
Jiajia Wang ◽  
Zhigang Zou
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Metal Ion ◽  
Carbon Nitride

Here we report a facile surface modification route, metal ion coordination, to improve the photoactivity of carbon nitride.

Effects of Surface Modification on the Photocatalytic Activity of TiO2

2010 ◽  
Vol 13 (3) ◽  
Author(s):  
Maria Vittoria Dozzi ◽  
Gian Luca Chiarello ◽  
Elena Selli
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Surface Modification ◽  
Surface Fluorination

AbstractThe photocatalytic activity of titanium dioxide modified by surface fluorination (F-TiO

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