Facile synthesis of layered Co(OH)2 deposited g-C3N4 for activating peroxymonosulfate to degrade organic pollutants

2021 ◽  
Author(s):  
Yingxue Zhang ◽  
Jianyu Qu ◽  
Fangjun Ding ◽  
Yujiao Kong ◽  
Xiurong Su ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Catalytic System ◽  
Environmentally Friendly ◽  
Advanced Oxidation ◽  
Sulfate Radical ◽  
Facile Synthesis ◽  
Advanced Oxidation Technologies

Sulfate radical-based advanced oxidation technologies (SR-AOTs) are very effective solutions to remove organic pollutants from wastewater. Nevertheless, difficulties remain in finding an efficient and environmentally friendly catalytic system to activate...

scholarly journals Perovskite and Spinel Catalysts for Sulfate Radical-Based Advanced Oxidation of Organic Pollutants in Water and Wastewater Systems

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1299
Author(s):  
Donatos Manos ◽  
Kleopatra Miserli ◽  
Ioannis Konstantinou
Keyword(s):  
Organic Pollutants ◽  
Organic Contaminants ◽  
Advanced Oxidation ◽  
Research Area ◽  
Water Systems ◽  
Transition Metal Catalysts ◽  
Sulfate Radical ◽  
Heterogeneous Catalytic ◽  
Emerging Organic Contaminants ◽  
Spinel Catalysts

Since environmental pollution by emerging organic contaminants is one of the most important problems, gaining ground year after year, the development of decontamination technologies of water systems is now imperative. Advanced oxidation processes (AOPs) with the formation of highly reactive radicals can provide attractive technologies for the degradation of organic pollutants in water systems. Among several AOPs that can be applied for the formation of active radicals, this review study focus on sulfate radical based-AOPs (SR-AOPs) through the heterogeneous catalytic activation of persulfate (PS) or peroxymonosulfate (PMS) using perovskite and spinel oxides as catalysts. Perovskites and spinels are currently receiving high attention and being used in substantial applications in the above research area. The widespread use of these materials is based mainly in the possibilities offered by their structure as it is possible to introduce into their structures different metal cations or to partially substitute them, without however destroying their structure. In this way a battery of catalysts with variable catalytic activities can be obtained. Due to the fact that Co ions have been reported to be one of the best activators of PMS, special emphasis has been placed on perovskite/spinel catalysts containing cobalt in their structure for the degradation of organic pollutants through heterogeneous catalysis. Among spinel materials, spinel ferrites (MFe2O4) are the most used catalysts for heterogeneous activation of PMS. Specifically, catalysts with cobalt ion in the A position were reported to be more efficient as PMS activators for the degradation of most organic pollutants compared with other transition metal catalysts. Substituted or immobilized catalysts show high rates of degradation, stability over a wider pH area and also address better the phenomena of secondary contamination by metal leaching, thus an effective method to upgrade catalytic performance.

Activation of peroxymonosulfate/persulfate by nanomaterials for sulfate radical-based advanced oxidation technologies

2018 ◽  
Vol 19 ◽  
pp. 51-58 ◽  
Author(s):  
Ruiyang Xiao ◽  
Zonghao Luo ◽  
Zongsu Wei ◽  
Shuang Luo ◽  
Richard Spinney ◽  
...  
Keyword(s):  
Advanced Oxidation ◽  
Sulfate Radical ◽  
Advanced Oxidation Technologies

scholarly journals A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

2020 ◽  
Vol 8 ◽  
Author(s):  
Xinhui Xia ◽  
Fengyi Zhu ◽  
Jianju Li ◽  
Haizhou Yang ◽  
Liangliang Wei ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Organic Pollutants ◽  
Industrial Wastewater ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Sulfate Radical ◽  
Sulfate Radicals ◽  
Research Attention ◽  
Industrial Wastewater Treatment ◽  
Oxidation Processes

High levels of toxic organic pollutants commonly detected during domestic/industrial wastewater treatment have been attracting research attention globally because they seriously threaten human health. Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been successfully used in wastewater treatment, such as that containing antibiotics, pesticides, and persistent organic pollutants, for refractory contaminant degradation. This review summarizes activation methods, including physical, chemical, and other coupling approaches, for efficient generation of sulfate radicals and evaluates their applications and economic feasibility. The degradation behavior as well as the efficiency of the generated sulfate radicals of typical domestic and industrial wastewater treatment is investigated. The categories and characteristics of the intermediates are also evaluated. The role of sulfate radicals, their kinetic characteristics, and possible mechanisms for organic elimination are assessed. In the last section, current difficulties and future perspectives of SR-AOPs for wastewater treatment are summarized.

scholarly journals Facile synthesis of an effective g-C3N4-based catalyst for advanced oxidation processes and degradation of organic compounds

2021 ◽  
Author(s):  
Tewodros Asefa ◽  
Zhujian Huang ◽  
Mingxiao Shen ◽  
Junhong Liu ◽  
Jiaer Ye
Keyword(s):  
Organic Compounds ◽  
Organic Pollutants ◽  
Advanced Oxidation Processes ◽  
Carbon Nitride ◽  
Active Catalyst ◽  
Advanced Oxidation ◽  
Graphitic Carbon Nitride ◽  
Facile Synthesis ◽  
Oxidation Processes ◽  
Highly Active

Advanced oxidation processes (AOPs) aided by catalysts can efficiently degrade organic pollutants and decontaminate wastewater. In this work, a highly active catalyst composed of FeMn-functionalized graphitic carbon nitride (FeMn-C3N4) for...

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