scholarly journals Mechanism Study of Tetracycline High Efficient Photodegradation by Bi2WO6 Nanosheets under Visible Light Irradiation

2019 ◽  
pp. 389
Author(s):  
WEI Xin ◽  
LU Zhan-Hui ◽  
WANG Lu-Ping ◽  
FANG Ming
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Mechanism Study ◽  
High Efficient

scholarly journals Enhanced Transformation of Atrazine by High Efficient Visible Light-Driven N, S-Codoped TiO2Nanowires Photocatalysts

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Yanlin Zhang ◽  
Honghai Wu ◽  
Peihong Liu
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Advanced Oxidation Process ◽  
Light Irradiation ◽  
Solar Irradiation ◽  
Electron Hole ◽  
Toc Removal ◽  
High Efficient ◽  
Endocrine Disrupting ◽  
Visible Light Driven

Advanced oxidation process using titanium dioxide as a photocatalyst under solar irradiation is one of the most attractive technologies to eliminate atrazine, an endocrine disrupting and carcinogen contaminant. The N, S-codoped TiO2nanowires at the calcination of 600°C obtained by a facile hydrothermal method revealed the best photocatalytic performance for the degradation of atrazine under visible light irradiation compared to N, S-codoped TiO2nanoparticles and S-doped TiO2nanowires. TOC removal experiment also exhibited the similar result and achieved 63% of atrazine mineralization within 6 h. The degradation of atrazine was driven mainly by•OH and holes during the photocatalytic process. Reactive species quantities such•OH andO2•-generated by N, S-codoped TiO2nanowires under visible light irradiation were much more than those of S-doped TiO2nanowires and N, S-codoped TiO2nanoparticles. These results were mainly attributed to the synergistic effect of N and S doping in narrowing the band gap, remarkable increase in electron-hole separation, extending the anatase-to-rutile transformation temperature above 600°C, and preferentially exposing high reactive{001}crystal facets of anatase.

High-efficient Degradation of Dyes by ZnxCd1−xS Solid Solutions under Visible Light Irradiation

2008 ◽  
Vol 112 (38) ◽  
pp. 14943-14947 ◽  
Author(s):  
Wenjuan Li ◽  
Danzhen Li ◽  
Zhixin Chen ◽  
Hanjie Huang ◽  
Meng Sun ◽  
...  
Keyword(s):  
Visible Light ◽  
Solid Solutions ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Degradation Of Dyes ◽  
High Efficient

scholarly journals Visible Light Induced Photocatalytic Performance of Mn-Sno2@Zno Nanocomposite for High Efficient Cationic Dye Degradation

2021 ◽  
Author(s):  
S. Asaithambi ◽  
P. Sakthivel ◽  
M. Karuppaiah ◽  
V. Balaji ◽  
R. Yuvakkumar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Optical Absorption ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Dye Degradation ◽  
Energy State ◽  
Light Irradiation ◽  
High Efficient ◽  
Mn Doped

Abstract In this work, we have synthesized Mn-doped SnO2@ZnO nanocomposite for photo degradation of Methylene blue and Rhodamine B dyes upon visible light irradiation. The crystal structure, functional group, optical absorption, defect related emission, morphology, purity and binding energy state of synthesized samples were identified by using various analytical tools. The optical absorption shift and the reduction of band gap values are confirming the formation of hetero-junction of SnO2@ZnO composites. The Mn-SnO2@ZnO hetero-junction effectively induces the photo-generated charge carrier separation and enriches the charge transfer which helps in enhancing the photo-catalytic activities. The photocatalytic degradation results clearly indicate that the Mn-doped SnO2@ZnO nanocomposite has higher degradation efficiency of 98 % and 92 % for the Methylene blue and Rhodamine B dyes, respectively and is higher than the other synthesized samples. The present study reveals a low cost and highly efficient photo-catalyst which works up on visible light irradiation for the purification of waste water from industries.

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