scholarly journals An overview report on the application of heteropoly acids on supporting materials in the photocatalytic degradation of organic pollutants from aqueous solutions

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5501 ◽  
Author(s):  
Ali Nikoonahad ◽  
Babak Djahed ◽  
Samira Norzaee ◽  
Hadi Eslami ◽  
Zahra Derakhshan ◽  
...  
Keyword(s):  
Water Resources ◽  
Aqueous Solutions ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Hydroxyl Radicals ◽  
Organic Pollutant ◽  
Environmental Hazards ◽  
Heteropoly Acids ◽  
Untreated Wastewater ◽  
Supporting Materials

Organic pollutants contaminate water resources and the environment when discharged into water streams. Also, the presence of these materials in incompletely treated or untreated wastewater leads to serious environmental hazards. The hydroxyl radicals and holes are regarded as the most oxidant species in the degradation of organic pollutants using the studied composites. The results of this review show that heteropoly acids on supporting materials could be considered as appropriate photocatalysts in the removal of organic pollutant from aqueous solutions.

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.

Hierarchical Z-scheme 1D/2D architecture with TiO2 nanowires decorated by MnO2 nanosheets for efficient adsorption and full spectrum photocatalytic degradation of organic pollutants

2020 ◽  
Vol 10 (11) ◽  
pp. 3603-3612
Author(s):  
Jiejing Zhang ◽  
Yajie Hu ◽  
Hong Zheng ◽  
Pengyi Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Organic Pollutant ◽  
Pollutant Removal ◽  
Tio2 Nanowires ◽  
Full Spectrum ◽  
Mno2 Nanosheets ◽  
Excellent Stability

A novel hierarchical 1D/2D TiO2/MnO2 composite shows superior adsorption, full spectrum photocatalytic activity and excellent stability for organic pollutant removal.

Photocatalytic Degradation of Organic Pollutants: A Review

2012 ◽  
Vol 734 ◽  
pp. 247-272 ◽  
Author(s):  
Rakshit Ameta ◽  
Surbhi Benjamin ◽  
Aarti Ameta ◽  
Suresh C. Ameta
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Water Resources ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Chemical Approach ◽  
Nitrogen Containing Compounds

Water pollution is increasing at an ever increasing pace and the whole world is in the cancerous grip of this pollution. Various industries are discharging their untreated effluents into the nearby water resources; thus, adding to the existing water pollution to a great extent. Hence, there is a pressing demand to develop an alternate technology for wastewater treatment and in this context; photocatalysis has emerged as an Advanced Oxidation Process with green chemical approach for such a treatment. This chapter deals with photocatalytic degradation of different kinds of organic pollutants; mainly surfactants, pesticides, dyes, phenols, chloro compounds, nitrogen containing compounds etc. Mechanisms of their degradation have also been discussed with hydroxyl and allied radicals as the main active oxidizing species.

scholarly journals Synthesis of TiO2/Carbon Nanoparticle (C-dot) Composites as Active Catalysts for Photodegradation of Persistent Organic Pollutant

2017 ◽  
Vol 17 (1) ◽  
pp. 37 ◽  
Author(s):  
Dedri Syafei ◽  
Sri Sugiarti ◽  
Noviyan Darmawan ◽  
Mohammad Khotib
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Visual Analysis ◽  
Organic Pollutant ◽  
Sol Gel ◽  
Synthesis Product ◽  
Photoluminescence Properties ◽  
Carbon Nanoparticle ◽  
Sunlight Irradiation

TiO2/C-dot composites were synthesised by sol-gel method and  investigated as catalysts for photocatalytic degradation of persistent organic pollutants (perchloroethylene, PCE). The composites photoluminescence properties was shown by visual analysis and the synthesis product was characterized by XRD, FTIR, fluorescence spectrophotometer, and UV-Vis spectrophotometer. Degradation of PCE 0.1% (v/v) in the aqueous phase was investigated under sunlight irradiation for 2 h. Photodegrade efficiency of PCE was determined by GC. Composites of TiO2/C-dot 2.5% (w/w) was succesfully to degrade PCE under sunlight irradiation and its photodegrade efficiency was up to 89.45%.

Application of a Keggin-type heteropoly acid on supporting nanoparticles in photocatalytic degradation of organic pollutants in aqueous solutions

2018 ◽  
Vol 197 ◽  
pp. 1447-1453 ◽  
Author(s):  
Mahmoud Taghavi ◽  
Mohammad Hassan Ehrampoush ◽  
Mohammad Taghi Ghaneian ◽  
Masoumeh Tabatabaee ◽  
Yadolah Fakhri
Keyword(s):  
Aqueous Solutions ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Heteropoly Acid ◽  
Keggin Type
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