Kinetics of the photosensitized degradation of benzyl 4-hydroxybenzoate in homogeneous aqueous solution under visible-light irradiation

2012 ◽  
Vol 210 ◽  
pp. 417-424 ◽  
Author(s):  
Marta Gmurek ◽  
Jacek S. Miller ◽  
Stanisław Ledakowicz
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Kinetics Of

Kinetics of Humic Acids Photodegradation in Aqueous Solution Using TiO2/ ZnO/Co Composite Photocatalyst

2019 ◽  
Vol 962 ◽  
pp. 117-121
Author(s):  
Muhammad Ali Zulfikar ◽  
Dira Irnameria ◽  
Muhamad Nasir
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Degradation Rate ◽  
Light Irradiation ◽  
Organic Substances ◽  
Composite Photocatalyst ◽  
Taste And Odor ◽  
Uv Visible ◽  
Kinetics Of

Humic acid (HA) is a major component of natural organic substances and affects water quality, such as color, taste and odor. Therefore, removal of HA from surface water or wastewater is very important. In this paper, the photodegradation kinetics of these compounds using TiO2/ZnO/Co composite photocatalyst under visible light irradiation was investigated. The progress of photocatalytic degradation of the HA has been observed by measuring the absorbance in UV-Visible spectrophotometer. The results reveal that the TiO2/ZnO/Co composite photocatalyst exhibits much better photocatalytic activity than those of pure TiO2 and TiO2/ZnO on photodegradation of HA under visible light irradiation, with degradation rate constants were found 0.0163, 0.0079 and 0.0032 (min-1), respectively.

scholarly journals Exfoliation of graphite into graphene in aqueous solution: an application as graphene/TiO2 nanocomposite to improve visible light photocatalytic activity

RSC Advances ◽  
2016 ◽  
Vol 6 (95) ◽  
pp. 93048-93055 ◽  
Author(s):  
R. Giovannetti ◽  
E. Rommozzi ◽  
M. Zannotti ◽  
C. A. D'Amato ◽  
S. Ferraro ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Liquid Phase ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Visible Light Photocatalytic Activity ◽  
Positive Effects ◽  
Graphene Dispersion ◽  
Visible Light Photocatalytic

Graphene dispersion (GR) was prepared by liquid-phase sonication of graphite and evaluated by XRD, DLS and UV-Vis analysis. It was used to prepare PP@mgGR–TiO2, showing positive effects on ARS photodegradation under visible light irradiation.

SiO2@Ag/AgCl: a low-cost and highly efficient plasmonic photocatalyst for degrading rhodamine B under visible light irradiation

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64747-64755 ◽  
Author(s):  
Xuefeng Xu ◽  
Man Wang ◽  
Yanyan Pei ◽  
Changchun Ai ◽  
Liangjie Yuan
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Irradiation ◽  
Nano Structure ◽  
Plasmonic Photocatalyst ◽  
Highly Efficient

The micro/nano-structure composite SiO2@Ag/AgCl was employed as a low cost photocatalyst for the degradation of RhB in aqueous solution under visible light irradiation, which exhibited excellent photocatalytic performance and stability.

Nitric Oxide Production by Visible Light Irradiation of Aqueous Solution of Nitrosyl Ruthenium Complexes

2005 ◽  
Vol 44 (26) ◽  
pp. 9946-9951 ◽  
Author(s):  
Marília Gama Sauaia ◽  
Renata Galvão de Lima ◽  
Antonio Claudio Tedesco ◽  
Roberto Santana da Silva
Keyword(s):  
Nitric Oxide ◽  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Ruthenium Complexes ◽  
Light Irradiation ◽  
Nitric Oxide Production ◽  
Oxide Production

Visible-Light Activity of N-Doped TiO2 Powders and their Applications

2007 ◽  
Vol 544-545 ◽  
pp. 167-170 ◽  
Author(s):  
Wen Bin Cao ◽  
Yi Wei ◽  
Yan Hong Li ◽  
Xiao Ning Zhang
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Guanidine Hydrochloride ◽  
Anatase Tio2 ◽  
Light Irradiation ◽  
Latex Paint ◽  
Doped Tio2 ◽  
Light Activity ◽  
Xrd Patterns

Nitrogen-doped TiO2 has been prepared by calcining technical grade guanidine hydrochloride and commercial anatase TiO2 powders. XRD patterns indicate that the prepared powders are composed of anatase. XPS results show that N atoms have been incorporated into the lattice of anatase. UV-Vis reflectance spectra show that the light absorption of the synthesized N-doped anatase powders has red-shifted well into visible-light region. Degradation of methylene blue (MB) aqueous solution by N-doped anatase has been investigated by UV-Vis light spectrophotometer. The 400-mL 10 mg/L aqueous solution of MB could be degraded with 4 g N-doped TiO2 within 4.5 hrs of visible light irradiation. Photocatalytic paint was prepared by adding the synthesized N-doped nanocrystalline anatase TiO2 powders into self-engineered oxidation resistance latex paint system. The effects of the amount and types of the TiO2 in the paints on the sterilization were systematically investigated. The colony counting method was used to study its sterilization performance under visible light irradiation. The sterilization experiments show that the rate of sterilizing E. coli by the N-doped TiO2 modified paint can exceed more than 99% after irradiation by the visible light for 2 to 4 hours.

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