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Li J, Yan C, Sun D, Ma H, Wang G, Ma C, Hao J. Peroxymonosulfate activation by magnetic CoNi-MOF catalyst for degradation of organic dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27369-4. [PMID: 37148514 DOI: 10.1007/s11356-023-27369-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 04/27/2023] [Indexed: 05/08/2023]
Abstract
In this work, Fe3O4/CoNi-MOF was synthesized by a simple solvothermal method. The catalytic performance of 0.2-Fe3O4/CoNi-MOF toward PMS activation was studied by degradation of 20 mg/L methylene blue (MB). The results indicated that 0.2-Fe3O4/CoNi-MOF had good catalytic ability, the removal rate of MB was 99.4% within 60 min with 125 mg/L PMS and 150 mg/L catalyst. Quenching experiment and electron paramagnetic resonance (EPR) analysis revealed that the singlet oxygen (1O2), superoxide radical (•O2-) and sulfate radical (SO4•-) played a crucial role in the catalytic degradation process. Meantime, mechanism of PMS activation by 0.2-Fe3O4/CoNi-MOF was proposed, the electrons donated by Fe2+ can also enhance the Co-Ni cycles. In conclusion, Fe3O4/CoNi-MOF composite catalyst has the advantages of simple preparation, excellent catalytic activity and reusability, which is an effective catalyst for water pollution control.
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Affiliation(s)
- Jiayi Li
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China
| | - Chumin Yan
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China
| | - Dedong Sun
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China.
| | - Hongchao Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China
| | - Guowen Wang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China
| | - Chun Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China
| | - Jun Hao
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 1# Qing Gong Yuan, Dalian, 116034, People's Republic of China
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Jaramillo-Fierro X, Cuenca MF. Novel Semiconductor Cu(C 3H 3N 3S 3) 3/ZnTiO 3/TiO 2 for the Photoinactivation of E. coli and S. aureus under Solar Light. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:173. [PMID: 36616082 PMCID: PMC9824406 DOI: 10.3390/nano13010173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
The use of semiconductors for bacterial photoinactivation is a promising approach that has attracted great interest in wastewater remediation. The photoinactivator Cu-TTC/ZTO/TO was synthesized by the solvothermal method from the coordination complex Cu(C3H3N3S3)3 (Cu-TTC) and the hybrid semiconductor ZnTiO3/TiO2 (ZTO/TO). In this study, the effect of photocatalyst composition/concentration as well as radiation intensity on the photoinactivation of the gram-negative bacteria Escherichia coli and the gram-positive bacteria Staphylococcus aureus in aqueous solutions was investigated. The results revealed that 25 mg/mL of photoinactivator, in a Cu-TTC:ZTO/TO molar ratio of 1:2 (w/w%) presents a higher rate of bacterial photoinactivation under simulated solar light (λ = 300-800 nm) in comparison to the individual components. The evidence of this study suggests that the presence of the Cu(C3H3N3S3)3 coordination complex in the ZnTiO3/TiO2 hybrid semiconductor would contribute to the generation of reactive oxygen species (ROS) that are essential to initiate the bacterial photoinactivation process. Finally, the results obtained allow us to predict that the Cu-TTC/ZTO/TO photocatalyst could be used for effective bacterial inactivation of E. coli and S. aureus in aqueous systems under simulated solar light.
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Affiliation(s)
- Ximena Jaramillo-Fierro
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - María Fernanda Cuenca
- Departamento de Producción, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
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Qiu J, Dai D, Zhang L, Xia G, Yao J. Oxygen vacancy-rich Bi2MoO6 anchored on cuboid metal-organic frameworks for photocatalytic elimination of Cr(VI)/2-nitrophenol mixed pollutants. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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[Cu(C3H3N3S3)3] Adsorption onto ZnTiO3/TiO2 for Coordination-Complex Sensitized Photochemical Applications. MATERIALS 2022; 15:ma15093252. [PMID: 35591585 PMCID: PMC9100386 DOI: 10.3390/ma15093252] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 02/01/2023]
Abstract
Currently, the design of highly efficient materials for photochemical applications remains a challenge. In this study, an efficient semiconductor was prepared, based on a coordination complex (Cu-TTC) of Cu(I) and trithiocyanuric acid on ZnTiO3/TiO2 (ZTO/TO). The Cu-TTC/ZTO/TO composite was prepared by the solvothermal method at room temperature. The structural, optical, and electrochemical characteristics, as well as the photocatalytic performance of the composite, were experimentally and computationally studied. The results show that the Cu-TTC/ZTO/TO composite efficiently extended its photoresponse in the visible region of the electromagnetic spectrum. The electrochemistry of the proposed tautomeric architecture (s-Cu-TTC) clearly reveals the presence of metal–ligand charge-transfer (MLCT) and π → π* excitations. The maximum methylene blue (MB) dye photodegradation efficiency of 95% in aqueous solutions was achieved under the illumination of simulated solar light. Finally, computational calculations based on the Density Functional Theory (DFT) method were performed to determine the electronic properties of the s-Cu-TTC tautomeric structure and clarify the adsorption mechanism of this complex on the surface (101) of both ZnTiO3 and TiO2 oxides. The results obtained allow us to suggest that the Cu-TTC complex is an effective charge carrier and that the Cu-TTC/ZTO/TO composite can be used efficiently for photochemical applications.
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