Visible light induced enhanced photocatalytic degradation of organic pollutants in aqueous media using Ag doped hollow TiO2 nanospheres

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37657-37668 ◽  
Author(s):  
Siddhartha Sankar Boxi ◽  
Santanu Paria
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Compounds ◽  
Organic Pollutants ◽  
Aqueous Media ◽  
Nano Catalyst

Visible light induced photocatalytic degradation of organic compounds using silver doped hollow TiO2 nano-catalyst.

scholarly journals Structurally and Compositionally Tunable Absorption Properties of AgCl@AgAu Nanocatalysts for Plasmonic Photocatalytic Degradation of Environmental Pollutants

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 405
Author(s):  
Han-Jung Ryu ◽  
Ha-Lin Kim ◽  
Jang Ho Joo ◽  
Jae-Seung Lee
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Aqueous Media ◽  
Environmental Pollutants ◽  
Selective Reduction ◽  
Visible Range ◽  
Ag Nps ◽  
Absorption Bands ◽  
Visible Light Driven

Composite nanomaterials having Ag nanoparticles (NPs) that decorate nanostructured AgCl (Ag/AgCl) are promising as plasmonic photocatalysts because of the visible-light absorption of Ag NPs. However, the narrow absorption bands of Ag NPs near 400 nm cause inefficient absorption in the visible range and, consequently, unsatisfactory photocatalytic activity of Ag/AgCl nanomaterials. In this study, we introduce a new class of AgCl-based photocatalysts that are decorated with bimetallic Ag and Au NPs (AgCl@AgAu NPs) for visible-light-driven photocatalytic degradation of organic pollutants. Polyvinylpyrrolidone induces selective reduction of noble metal precursors on AgCl while leaving AgCl intact. The extended composition of the decorating NPs red-shifts the absorption band to 550–650 nm, which allows the catalysts to take advantage of more energy in the visible range for improved efficiency. Furthermore, we control the structures of the AgCl@AgAu NPs, and investigate their correlation with photocatalytic properties. The versatility, chemical stability, and practical application of the AgCl@AgAu NPs are demonstrated using various organic pollutants, recycling experiments, and natural aqueous media, respectively. Our fundamental investigation on the synthesis and applications of AgCl-based nano-photocatalysts is highly valuable for designing plasmonic photocatalysts and expanding their utilization.

scholarly journals Magnetic Field-Assisted Photocatalytic Degradation of Organic Pollutants over Bi1−xRxFeO3 (R = Ce, Tb; x = 0.00, 0.05, 0.10 and 0.15) Nanostructures

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4079
Author(s):  
Radhalayam Dhanalakshmi ◽  
Nambi Venkatesan Giridharan ◽  
Juliano C. Denardin
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Visible Light Irradiation ◽  
Organic Pollutant ◽  
Hydrothermal Process ◽  
Phenol Red ◽  
Magnetic Features

Magnetic-field-accelerated photocatalytic degradation of the phenol red (PR) as a model organic pollutant was studied using rare-earth elements modified BiFeO3 (Bi1−xRxFeO3 (R = Ce, Tb; x = 0.0, 0.05, 0.10 and 0.15); BFO: RE) nanostructures. The nanostructures were prepared via the hydrothermal process and their morphological, structural, functional, optical and magnetic features were investigated in detail. The effect of magnetic fields (MFs) on photocatalysis were examined by applying the different MFs under visible light irradiation. The enhanced photodegradation efficiencies were achieved by increasing the MF up to 0.5T and reduced at 0.7T for the compositions x = 0.10 in both Ce and Tb substituted BFO. Further, mineralization efficiencies of PR, reproducibility of MF-assisted photocatalysis, stability and recyclability of BFO: RE nanostructures were also tested.

Ag@AgHPW as a plasmonic catalyst for visible-light photocatalytic degradation of environmentally harmful organic pollutants

2013 ◽  
Vol 48 (6) ◽  
pp. 2308-2316 ◽  
Author(s):  
Wenhui Zhou ◽  
Minhua Cao ◽  
Na Li ◽  
Shuangyue Su ◽  
Xinyu Zhao ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Visible Light Photocatalytic

Large-scale synthesis of Au–WO3 porous hollow spheres and their photocatalytic properties

2017 ◽  
Vol 7 (17) ◽  
pp. 3702-3706 ◽  
Author(s):  
Chenying He ◽  
Xia Li ◽  
Yahui Li ◽  
Junfang Li ◽  
Guangcheng Xi
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Hybrid Materials ◽  
Large Scale ◽  
Hollow Spheres ◽  
Photocatalytic Properties ◽  
Excellent Activity ◽  
Visible Light Photocatalytic

Uniform Au–WO3 porous hollow spheres have been synthesized on a large-scale by a general in situ reaction. The hybrid materials exhibit excellent activity for visible-light photocatalytic degradation of organic pollutants.

Synthesis of Bi/Bi2O2SiO3/Bi2WO6 Composites with Enhanced Visible Light Activity in Photocatalytic Degradation of Organic Compounds

2020 ◽  
Vol 94 (6) ◽  
pp. 1254-1261
Author(s):  
Zhi Zhang ◽  
Chentao Zou ◽  
Jian Zhou ◽  
Zhiyuan Yang ◽  
Mengjun Liang ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Compounds ◽  
Light Activity

Towards efficient photocatalytic degradation of organic pollutants in hierarchical TiO2/SnO p–n heterojunction under visible-light irradiation

2019 ◽  
Vol 30 (43) ◽  
pp. 434001 ◽  
Author(s):  
Rui Zhang ◽  
Qi Wang ◽  
Jun Zhang ◽  
Qipeng Lu ◽  
Wenxiu Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Visible Light Irradiation ◽  
Light Irradiation
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