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Liu S, Liu S, Chen H, Xing Y, Wang W, Wang L, Liang Y, Fu J, Zhang C. Catalytic activation of percarbonate with synthesized carrollite for efficient decomposition of bisphenol S: Performance, degradation mechanism and toxicity assessment. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132719. [PMID: 37866148 DOI: 10.1016/j.jhazmat.2023.132719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/10/2023] [Accepted: 10/03/2023] [Indexed: 10/24/2023]
Abstract
This study demonstrates the novel application of carrollite (CuCo2S4) for the activation of sodium percarbonate (SPC) towards bisphenol S (BPS) degradation. The effect of several crucial factors like BPS concentration, CuCo2S4 dosage, SPC concentration, reaction temperature, water matrices, inorganic anions, and pH value were investigated. Experimental results demonstrated that BPS could be efficiently degraded by CuCo2S4-activated SPC system (88.52% at pH = 6.9). The mechanism of BPS degradation by CuCo2S4-activated SPC system was uncovered by quenching and electron spin resonance experiments, discovering that a multiple reactive oxygen species process was involved in BPS degradation by hydroxyl radical (•OH), superoxide radical (•O2-), singlet oxygen superoxide (1O2) and carbonate radical (•CO3-). Furthermore, the S(-II) species facilitated rapid redox cycles between Cu(I)/Cu(II) and Co(II)/Co(III). •CO3- was found to not only directly react with BPS molecules, but also act as a bridge to promote •O2- and 1O2 generation, thereby accelerating BPS degradation. Finally, the combination of UHPLC/Q-TOF-MS test with density functional theory (DFT) method was employed to detect major degradation intermediates and thereby elucidate possible reaction pathways of BPS degradation. This study provides a novel strategy by integrating transition metal sulfides with percarbonate for the elimination of organic pollutants in water.
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Affiliation(s)
- Shicheng Liu
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, PR China; College of Life and Environmental Science, Minzu University of China, Beijing 100081, PR China
| | - Sitong Liu
- Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China
| | - Huabin Chen
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, PR China; College of Life and Environmental Science, Minzu University of China, Beijing 100081, PR China
| | - Yujin Xing
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, PR China; College of Life and Environmental Science, Minzu University of China, Beijing 100081, PR China
| | - Wenzhong Wang
- Key Laboratory of Ecology and Environment in Minority Areas (Minzu University of China), National Ethnic Affairs Commission, Beijing 100081, PR China; College of Life and Environmental Science, Minzu University of China, Beijing 100081, PR China; School of Science, Minzu University of China, Beijing 100081, PR China.
| | - Lijuan Wang
- School of Science, Minzu University of China, Beijing 100081, PR China
| | - Yujie Liang
- School of Science, Minzu University of China, Beijing 100081, PR China
| | - Junli Fu
- School of Science, Minzu University of China, Beijing 100081, PR China
| | - Chen Zhang
- College of Life and Environmental Science, Minzu University of China, Beijing 100081, PR China
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Monfort O, Madhusudhan A, Motola M. Controversial mechanism of simultaneous photocatalysis and Fenton-based processes: additional effect or synergy? Chem Commun (Camb) 2024; 60:374-383. [PMID: 38099627 DOI: 10.1039/d3cc03992g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Many published articles have reported the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation purposes, especially wastewaters treatment, but without providing detailed discussion on how and why the resulting process is better, thus leading to misconception about their synergy. In this work, the context of the water pollution is presented along with the pros and cons of individual photocatalysis and Fenton-based processes. The simultaneous triggering of these two advanced oxidation processes is critically discussed from both performance and mechanism sides since additional effect and synergy are often misunderstood in the literature. Insights into research approaches to clarify the synergistic mechanism between photocatalysis and Fenton-based processes are also provided. One of the key features is to assess the separated contribution of the individual processes and also to elucidate the charge carriers' dynamics at the surface of the catalyst. The aim of this work is to inform scientists about the complexity of simultaneously triggered photocatalysis and Fenton-based processes but also to highlight the potential development of a new generation of catalysts that might be integrated to current wastewater treatment technology to achieve higher efficiency and their implications in the circular economy of water.
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Affiliation(s)
- Olivier Monfort
- Comenius University Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Ilkovicova 6, Mlynska Dolina, 84215 Bratislava, Slovakia.
| | - Arshitha Madhusudhan
- Comenius University Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Ilkovicova 6, Mlynska Dolina, 84215 Bratislava, Slovakia.
| | - Martin Motola
- Comenius University Bratislava, Faculty of Natural Sciences, Department of Inorganic Chemistry, Ilkovicova 6, Mlynska Dolina, 84215 Bratislava, Slovakia.
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Geldasa FT, Kebede MA, Shura MW, Hone FG. Experimental and computational study of metal oxide nanoparticles for the photocatalytic degradation of organic pollutants: a review. RSC Adv 2023; 13:18404-18442. [PMID: 37342807 PMCID: PMC10278095 DOI: 10.1039/d3ra01505j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/31/2023] [Indexed: 06/23/2023] Open
Abstract
Photocatalysis is a more proficient technique that involves the breakdown or decomposition of different organic contaminants, various dyes, and harmful viruses and fungi using UV or visible light solar spectrum. Metal oxides are considered promising candidate photocatalysts owing to their low cost, efficiency, simple fabricating method, sufficient availability, and environment-friendliness for photocatalytic applications. Among metal oxides, TiO2 is the most studied photocatalyst and is highly applied in wastewater treatment and hydrogen production. However, TiO2 is relatively active only under ultraviolet light due to its wide bandgap, which limits its applicability because the production of ultraviolet is expensive. At present, the discovery of a photocatalyst of suitable bandgap with visible light or modification of the existing photocatalyst is becoming very attractive for photocatalysis technology. However, the major drawbacks of photocatalysts are the high recombination rate of photogenerated electron-hole pairs, the ultraviolet light activity limitations, and low surface coverage. In this review, the most commonly used synthesis method for metal oxide nanoparticles, photocatalytic applications of metal oxides, and applications and toxicity of different dyes are comprehensively highlighted. In addition, the challenges in the photocatalytic applications of metal oxides, strategies to suppress these challenges, and metal oxide studied by density functional theory for photocatalytic applications are described in detail.
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Affiliation(s)
- Fikadu Takele Geldasa
- Adama Science and Technology University, Department of Applied Physics P. O. Box1888 Adama Ethiopia
- Oda Bultum University, Department of Physics P. O. Box 226, Chiro Ethiopia
| | - Mesfin Abayneh Kebede
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa Florida Science Campus Johannesburg 1710 South Africa
| | - Megersa Wodajo Shura
- Adama Science and Technology University, Department of Applied Physics P. O. Box1888 Adama Ethiopia
| | - Fekadu Gashaw Hone
- Addis Ababa University, Department of Physics P.O. Box: 1176 Addis Ababa Ethiopia
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Zolfaghari H, Yousefi F, Ghaedi M, Mosleh S. Performance evaluation of Zr(CUR)/NiCo 2S 4/CuCo 2S 4 and Zr(CUR)/CuCo 2S 4/Ag 2S composites for photocatalytic degradation of the methyl parathion pesticide using a spiral-shaped photocatalytic reactor. RSC Adv 2022; 12:29503-29515. [PMID: 36320776 PMCID: PMC9562372 DOI: 10.1039/d2ra06277a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 10/07/2022] [Indexed: 11/25/2022] Open
Abstract
Zr(CUR)/NiCo2S4/CuCo2S4 and Zr(CUR)/CuCo2S4/Ag2S ternary composites were synthesized as efficient photocatalysts, and well characterized through XRD, FTIR, DRS, FE-SEM, EDS, and EDS mapping techniques. The potential of a spiral-shaped photocatalytic reactor was evaluated for degradation of the methyl parathion (MP) pesticide using synthesized photocatalysts under visible light irradiation. Computational fluid dynamics (CFD) was applied for analysis of the hydrodynamics behaviour and mass transport occurring inside the reactor. The experiments were performed based on a developed CCD-RSM model, while the desirability function (DF) was used for optimization of the process. Findings showed that the highest MP degradation percentage was 98.70% at optimal operating values including 20 mg L-1, 0.60 g L-1, 8 and 40 min for MP concentration, catalyst dosage, pH, and reaction time, respectively. This study clearly demonstrated that high degradation efficiency can be achieved using a spiral-shaped photocatalytic reactor rather than a traditional annular reactor at same conditions. The increase in reaction rate is related to the higher average turbulence kinetic energy in the spiral-shaped reactor over the traditional reactor, which results in the increased diffusivity and improves the mass and momentum transfer.
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Affiliation(s)
| | - Fakhri Yousefi
- Chemistry Department, Yasouj UniversityYasouj 75918-74831Iran
| | | | - Soleiman Mosleh
- Polymer Engineering Department, Faculty of Gas and Petroleum, Yasouj UniversityGachsaran 75813-56001Iran
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Wang L, Chen L, Tang M, Jiang S, Gao D. Incorporation of a Z-scheme AgI/Ag 6Si 2O 7 heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation. NEW J CHEM 2022. [DOI: 10.1039/d2nj04168e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Anchoring the Z-scheme AgI/Ag6Si2O7 photocatalyst on PET fabric facilitates reuse. AgI enhances the separation effect of photogenerated carriers. The photocatalytic activity and stability of AgI/Ag6Si2O7/PET composites are greatly improved.
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Affiliation(s)
- Lili Wang
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Lei Chen
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Mengyao Tang
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Shoujie Jiang
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, China
| | - Dawei Gao
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
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