Preparation, characterization and charge transfer studies of nickel – modified and nickel, nitrogen co-modified rutile titanium dioxide for photocatalytic application

2014 ◽  
Vol 239 ◽  
pp. 149-157 ◽  
Author(s):  
D. Dolat ◽  
B. Ohtani ◽  
S. Mozia ◽  
D. Moszyński ◽  
N. Guskos ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Charge Transfer ◽  
Photocatalytic Application ◽  
Rutile Titanium Dioxide

scholarly journals Photocatalysis of Titanium Dioxide for Water Disinfection: Challenges and Future Perspectives

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
M. J. Wu ◽  
T. Bak ◽  
P. J. O’Doherty ◽  
M. C. Moffitt ◽  
J. Nowotny ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Charge Transfer ◽  
Water Oxidation ◽  
Charge Separation ◽  
Water Disinfection ◽  
Future Perspectives ◽  
Oxide Semiconductors ◽  
Photocatalytic Application ◽  
Semiconducting Properties ◽  
Partial Water

The performance of metal oxides such as titanium dioxide (TiO2), in the conversion of solar energy into chemical energy, is determined by semiconducting properties. The conversion process is closely related to the light-induced reactivity between oxide semiconductors and water, which may lead to partial water oxidation and consequently water disinfection. Key performance-related properties are considered here, including light absorption, light-induced ionisation over the band gap, charge separation, charge transport, charge transfer, and the chemical reactions taking place at anodic and cathodic sites. Optimisation of these interconnected performance-related properties is discussed, along with the photocatalytic application in water disinfection.

Photocatalytic application of Graphene oxide-ZnO nanocomposite for the reduction of methylene blue dye

2021 ◽  
Author(s):  
Bansura Banu ◽  
Mercy Jennifer ◽  
Udith Ferdila
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Charge Transfer ◽  
Density Of States ◽  
Density Functional ◽  
Basis Sets ◽  
Blue Dye ◽  
Layer Spacing ◽  
Photocatalytic Application ◽  
Theoretical Results

Abstract The Graphene Oxide (GO) and GO-Zinc Oxide (GO-ZnO) nanocomposite were prepared using simplified techniques with modified Hummer’s and solvothermal methods for photocatalytic application. In a comparative study, the optimized geometries, binding energies, electronic properties, non-linear optical properties and density of states of GO-ZnO were calculated using density functional theory (DFT) calculations with B3LYP method at 6-31G (d,p) and LanL2DZ basis sets to examine the binding site of a methylene blue (MB) dye systematically. The result of Natural bond orbital (NBO) analysis revealed the effective charge transfer and also explained the mechanism and efficiency of the photocatalytic activity of GO-ZnO. Density of states supported the strong interaction of MB with the GO-ZnO leading to the degradation of the MB dye. The attained theoretical results depict the existence of n → σ*, n → n* and σ → σ* interactions, improved charge transfer, reduced band gap which establish the use of GO-ZnO in the visible light photocatalytic performance. Characterization methods such as XRD, FTIR and UV were carried out to support our theoretical results. The XRD results confirmed the particle size of 21 nm with inter layer spacing of 0.87 nm. FTIR spectroscopy indicated the characteristic bands related to the elements in GO-ZnO. The higher electrical conductivity is studied using UV-Vis spectral analysis. The calculated results show good agreements with experimental observations reveal that the GO-ZnO has good photocatalytic behavior.

scholarly journals Photo-Gated Intervalence Charge Transfer of Ethynylferrocene Functionalized Titanium Dioxide Nanoparticles

2016 ◽  
Vol 211 ◽  
pp. 704-710 ◽  
Author(s):  
Yi Peng ◽  
Jia En Lu ◽  
Christopher P. Deming ◽  
Limei Chen ◽  
Nan Wang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Charge Transfer ◽  
Titanium Dioxide Nanoparticles ◽  
Intervalence Charge Transfer

scholarly journals STUDY ON AGEING RESISTANCE OF POLYPROPYLENE/NANO-SCALE RUTILE TITANIUM DIOXIDE/POE POLYOLEFIN ELASTOMER COMPOSITES

2006 ◽  
Vol 006 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Gang GUO ◽  
Jie YU ◽  
Zhu LUO ◽  
Zhiyong QIAN ◽  
Wanxia HUANG ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Nano Scale ◽  
Polyolefin Elastomer ◽  
Elastomer Composites ◽  
Rutile Titanium Dioxide

scholarly journals Photo-induced direct interfacial charge transfer at TiO2 modified with hexacyanoferrate(iii)

2018 ◽  
Vol 17 (9) ◽  
pp. 1153-1156 ◽  
Author(s):  
Tomomi Tatebe ◽  
Takashi Harada ◽  
Kazuhide Kamiya ◽  
Shuji Nakanishi
Keyword(s):  
Electron Transfer ◽  
Titanium Dioxide ◽  
Charge Transfer ◽  
Transfer Reactions ◽  
Interfacial Charge Transfer ◽  
Electron Transfer Reactions ◽  
Photo Induced Electron Transfer ◽  
Interfacial Charge

Photo-induced electron-transfer reactions occurring at the interface between titanium dioxide modified with hexacyanoferrate(iii) (Fe(iii)-CN-TiO2) were characterized.

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