scholarly journals New insights into the origin of the visible light photocatalytic activity of Fe(iii) porphyrin surface anchored TiO2

2015 ◽  
Vol 1 (2) ◽  
pp. 177-187 ◽  
Author(s):  
M. L. ArunaKumari ◽  
L. Gomathi Devi
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Conduction Band ◽  
Electron Donor ◽  
Visible Light Photocatalytic Activity ◽  
Photogenerated Electrons ◽  
Transfer Channels ◽  
Visible Light Photocatalytic ◽  
Anchored Tio2

The chemisorbed Hemin molecule acts as a sensitizer under visible light and transfers photogenerated electrons to the TiO2 conduction band through OC–O–Ti bonds which can act as electron transfer channels. The oxidized Hemin molecule is regenerated by triethanolamine a sacrificial electron donor.

Monolithic organic/inorganic ternary nanohybrids toward electron transfer cascade for enhanced visible-light photocatalysis

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23174-23180 ◽  
Author(s):  
Yingzhi Chen ◽  
Mengbin Yue ◽  
Zheng-Hong Huang ◽  
Lu-Ning Wang ◽  
Feiyu Kang
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Photocatalysis ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

Monolithic organic/inorganic ternary nanohybrids were facilely prepared toward electron transfer cascade and demonstrated enhanced visible-light photocatalytic activity.

Constructing a ternary H2SrTa2O7/g-C3N4/Ag3PO4 heterojunction based on cascade electron transfer with enhanced visible light photocatalytic activity

CrystEngComm ◽  
2020 ◽  
Vol 22 (39) ◽  
pp. 6485-6494 ◽  
Author(s):  
Yi Ren ◽  
Wenqi Zhan ◽  
Lulu Tang ◽  
Hui Zheng ◽  
Huimin Liu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Photocatalytic Activity ◽  
First Time ◽  
Visible Light Photocatalytic

A ternary H2SrTa2O7/g-C3N4/Ag3PO4 heterojunction was fabricated for the first time and displayed excellent visible light photocatalytic activity.

scholarly journals Electron transfer in ZnO–Fe2O3 aqueous slurry systems and its effects on visible light photocatalytic activity

2017 ◽  
Vol 7 (18) ◽  
pp. 4041-4047 ◽  
Author(s):  
H. Lachheb ◽  
F. Ajala ◽  
A. Hamrouni ◽  
A. Houas ◽  
F. Parrino ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electronic Structure ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Strong Interactions ◽  
Visible Light Photocatalytic Activity ◽  
Efficient Charge ◽  
Visible Light Photocatalytic ◽  
Aqueous Slurry

The strong interactions between ZnO and Fe2O3 modify the nanocomposite's electronic structure producing efficient charge separation and superior photoactivity.

scholarly journals Enhanced Visible Light Photocatalytic Activity ofV2O5Cluster Modified N-DopedTiO2for Degradation of Toluene in Air

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Fan Dong ◽  
Yanjuan Sun ◽  
Min Fu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Noble Metals ◽  
Large Scale ◽  
Low Cost ◽  
Photogenerated Electron ◽  
Visible Light Photocatalytic Activity ◽  
Highly Active ◽  
Photogenerated Electrons ◽  
Visible Light Photocatalytic

V2O5cluster-modified N-doped TiO2(N-TiO2/V2O5) nanocomposites photocatalyst was prepared by a facile impregnation-calcination method. The effects of V2O5cluster loading content on visible light photocatalytic activity of the as-prepared samples were investigated for degradation of toluene in air. The results showed that the visible light activity of N-doped TiO2was significantly enhanced by loading V2O5clusters. The optimal V2O5loading content was found to be 0.5 wt.%, reaching a removal ratio of 52.4% and a rate constant of 0.027 min−1, far exceeding that of unmodified N-doped TiO2. The enhanced activity is due to the deposition of V2O5clusters on the surface of N-doped TiO2. The conduction band (CB) potential of V2O5(0.48 eV) is lower than the CB level of N-doped TiO2(−0.19 V), which favors the photogenerated electron transfer from CB of N-doped TiO2to V2O5clusters. This function of V2O5clusters helps promote the transfer and separation of photogenerated electrons and holes. The present work not only displays a feasible route for the utilization of low cost V2O5clusters as a substitute for noble metals in enhancing the photocatalysis but also demonstrates a facile method for preparation of highly active composite photocatalyst for large-scale applications.

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