Advanced Oxidation Processes for Organic Contaminant Destruction Based on the Fenton Reaction and Related Chemistry

2006 ◽  
Vol 36 (1) ◽  
pp. 1-84 ◽  
Author(s):  
Joseph J. Pignatello ◽  
Esther Oliveros ◽  
Allison MacKay
Keyword(s):  
Fenton Reaction ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Organic Contaminant ◽  
Oxidation Processes ◽  
Contaminant Destruction

scholarly journals Metal-Free Fenton-like Photocatalysts Based on Covalent Organic Frameworks

2021 ◽  
Author(s):  
Qiaobo Liao ◽  
Can Ke ◽  
Dongni Wang ◽  
Yiying Zhang ◽  
Qingwen Han ◽  
...  
Keyword(s):  
Fenton Reaction ◽  
High Stability ◽  
Advanced Oxidation Processes ◽  
Superoxide Radical ◽  
Advanced Oxidation ◽  
Oxygen Species ◽  
Oxidation Processes ◽  
Metal Free ◽  
Layer Stacking ◽  
Opening Up

The Fenton reaction is one of the most efficient and widely used advanced oxidation processes for remediating the ever-growing water pollution. Metal-free photocatalysts for Fenton-like reactions have gathered enormous scientific interest for their advantages including board pH operation range and high stability. Herein, we demonstrate a metal-free covalent organic framework (COF)-based standalone photocatalyst with superior reactivity and reusability for Fenton-like reactions at acid and neutral pH solutions, which can be attributed to its large porosity, high density of the photoactive triazine moiety, vertical π arrays formed by eclipsed layer stacking and the <i>β</i>‑ketoenamine linkage. Our experiments showed that the photocatalyst can absorb visible light effectively for activation of H<sub>2</sub>O<sub>2</sub>, producing abundant reactive oxygen species including superoxide radical (O<sub>2</sub><sup>·-</sup>), hydroxyl radical (<sup>·</sup>OH), and singlet oxygen (<sup>1</sup>O<sub>2</sub>) for oxidizing organic pollutants. This work not only provides an efficient metal-free photocatalyst for Fenton-like reactions, but also paves the way for COFs towards advanced oxidation processes, opening up the possibilities to their future applications in industry.

Advanced oxidation processes: mechanistic aspects

2008 ◽  
Vol 58 (5) ◽  
pp. 1015-1021 ◽  
Author(s):  
C. von Sonntag
Keyword(s):  
Activated Carbon ◽  
Fenton Reaction ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oh Radicals ◽  
Oh Radical ◽  
Reactive Intermediate ◽  
Oxidation Processes ◽  
Water Matrix ◽  
Vacuum Uv

The reactive intermediate in Advanced Oxidation Processes (AOPs) is the •OH radical. It may be generated by various approaches such as the Fenton reaction (Fe2 + /H2O2), photo-Fenton reaction (Fe3 + /H2O2/hν), UV/H2O2, peroxone reaction (O3/H2O2), O3/UV, O3/activated carbon, O3/dissolved organic carbon (DOC) of water matrix, ionizing radiation, vacuum UV, and ultrasound. The underlying reactions and •OH formation efficiencies are discussed. The key reactions of •OH radicals also addressed in this review.

A titanium-based photo-Fenton bifunctional catalyst of mp-MXene/TiO2−x nanodots for dramatic enhancement of catalytic efficiency in advanced oxidation processes

2018 ◽  
Vol 54 (82) ◽  
pp. 11622-11625 ◽  
Author(s):  
Xiaomei Cheng ◽  
Lianhai Zu ◽  
Yue Jiang ◽  
Donglu Shi ◽  
Xiaoming Cai ◽  
...  
Keyword(s):  
Fenton Reaction ◽  
Advanced Oxidation Processes ◽  
Degradation Rate ◽  
Oxidative Degradation ◽  
Catalytic Efficiency ◽  
Advanced Oxidation ◽  
Bifunctional Catalyst ◽  
Oxidation Processes ◽  
Reaction Works

A pseudo-Fenton reaction works synergistically with photocatalysis to greatly accelerate the oxidative degradation rate.

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