Effect of preparation method on structural, morphological, optical properties and photocatalytic activities of visible light active semiconductor PbBi2Nb2O9 for various organic pollutant dyes

2020 ◽  
Vol 106 ◽  
pp. 104773
Author(s):  
K. Vijaya Sankar ◽  
M. Ashok
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
Preparation Method ◽  
Organic Pollutant ◽  
Photocatalytic Activities ◽  
Visible Light Active

scholarly journals Green synthesis of mesoporous anatase TiO2 nanoparticles and their photocatalytic activities

RSC Advances ◽  
2017 ◽  
Vol 7 (76) ◽  
pp. 48083-48094 ◽  
Author(s):  
Sunderishwary S. Muniandy ◽  
Noor Haida Mohd Kaus ◽  
Zhong-Tao Jiang ◽  
Mohammednoor Altarawneh ◽  
Hooi Ling Lee
Keyword(s):  
Low Temperature ◽  
Green Chemistry ◽  
Visible Light ◽  
Green Synthesis ◽  
Tio2 Nanoparticles ◽  
Soluble Starch ◽  
Anatase Tio2 ◽  
Photocatalytic Activities ◽  
Visible Light Active

Mesoporous anatase TiO2 nanoparticles are produced by employing a facile green chemistry approach at low temperature with soluble starch as the template in this work. The obtained TiO2 photocatalyst is visible-light active with good photocatalytic activities.

scholarly journals Synthesis and characterization of Z-scheme heterostructure CoWO4/g-C3N4 as a visible-light photocatalyst for removal of organic pollutant

2021 ◽  
Vol 10 (2) ◽  
pp. 59-63
Author(s):  
Hai Pham Viet ◽  
Anh Dao Thi Ngoc ◽  
Viet Nguyen Minh ◽  
Ha Tran Thi Viet ◽  
Dang Do Van ◽  
...  
Keyword(s):  
Visible Light ◽  
Rhodamine B ◽  
High Performance ◽  
Organic Pollutant ◽  
Photogenerated Electron ◽  
Morphological Properties ◽  
Electron Hole ◽  
Visible Light Photocatalyst ◽  
Photocatalytic Activities

In this study, direct Z–scheme heterostructure CoWO4/g-C3N4 was synthesized by a facile hydrothermal method. The structural, morphological properties of the prepared samples were characterised by XRD, SEM, UV–Vis and PL measurements. The as-obtained heterostructure CoWO4/g-C3N4 exhibited enhanced photocatalytic activities toward the degradation of Rhodamine B under visible light irradiation with 92% Rhodamine B removal after 80 minutes irritation, which exceeded pristine g-C3N4 and CoWO4. The enhanced photocatalytic performance ascribed to interfacial contact between g-C3N4 and CoWO4, thus further inhibiting the recombination of photogenerated electron/hole pairs. It is anticipated that the construction of Z–scheme heterostructure CoWO4/g-C3N4 is an effective strategy to develop high-performance photocatalysts for the degradation of organic pollutants in water.

scholarly journals Pb-Free Cs3Bi2I9 Perovskite as a Visible-Light-Active Photocatalyst for Organic Pollutant Degradation

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 763 ◽  
Author(s):  
Bianca-Maria Bresolin ◽  
Carsten Günnemann ◽  
Detlef W. Bahnemann ◽  
Mika Sillanpää
Keyword(s):  
Visible Light ◽  
Transient Absorption ◽  
Organic Pollutant ◽  
Transient Absorption Spectroscopy ◽  
Advanced Materials ◽  
Organic Pollutant Degradation ◽  
Metal Halide Perovskite ◽  
Excellent Activity ◽  
Visible Light Active ◽  
Light Excitation

In our work, we employed Cs3Bi2I9 as a visible-light-active photocatalyst, synthesized with a low-temperature solvothermal method. The morphological and structural properties of the as-prepared perovskite were investigated, and the results were compared to previous studies to confirm its nature and the quality of the synthesis procedure. Transient absorption spectroscopy was applied in order to investigate the generation and lifetime of photogenerated charge carriers, revealing their formation after visible light excitation. The potential photocatalytic activity of the as-prepared metal halide perovskite was applied for the removal of Rhodamine B in aqueous solution, demonstrating an excellent activity of 93% after 180 min under visible-light irradiation. The current research aims to provide insights into the design of a new visible-light-active photocatalyst, Cs3Bi2I9, selected for its high application value in the field of advanced materials for light harvesting.

scholarly journals Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34366-34375 ◽  
Author(s):  
S. Harish ◽  
J. Archana ◽  
M. Navaneethan ◽  
S. Ponnusamy ◽  
Ajay Singh ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Organic Pollutant ◽  
Synergetic Effect ◽  
Light Irradiation ◽  
Visible Light Active

Ultrafast visible light active CuS/ZnS nanostructured photocatalysts were synthesized by a hydrothermal method.

Preparation of visible light active S-doped TiO2 photocatalysts and their photocatalytic activities

2004 ◽  
Vol 49 (4) ◽  
pp. 159-163 ◽  
Author(s):  
T. Ohno
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Uv Light ◽  
Anatase Phase ◽  
Xps Spectra ◽  
Tio2 Photocatalysts ◽  
Chemically Modified ◽  
Tio2 Particles ◽  
Photocatalytic Activities ◽  
Visible Light Active

Although titanium dioxide photocatalysts having an anatase phase are a promising substrate for photodegradation of pollutants in water and air, their photocatalytic activities show only under UV light. To utilize solar light which has a large amount of visible light, the development of the photocatalysts whose activities show under visible light is one of the most important strategies. We have succeeded in synthesizing chemically modified titanium dioxide photocatalysts in which S (S4+) substitutes for some of the lattice titanium atoms. They show strong absorption for visible light and high activities for degradation of 2-propanol in aqueous solution and partial oxidation of adamantane in acetonitrile under irradiation at wavelengths longer than 440 nm. The oxidation state of the S atoms incorporated into the TiO2 particles is determined to be mainly S4+ from XPS spectra.

Controlled structural and compositional characteristic of visible light active ZnO/CuO photocatalyst for the degradation of organic pollutant

2017 ◽  
Vol 418 ◽  
pp. 103-112 ◽  
Author(s):  
S. Harish ◽  
J. Archana ◽  
M. Sabarinathan ◽  
M. Navaneethan ◽  
K.D. Nisha ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Pollutant ◽  
Visible Light Active
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