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Farajollahi A, Poursattar Marjani A. Preparation of MWCNT/CoMn 2O 4 nanocomposite for effectual degradation of picric acid via peroxymonosulfate activation. Sci Rep 2024; 14:11475. [PMID: 38769448 DOI: 10.1038/s41598-024-62351-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/15/2024] [Indexed: 05/22/2024] Open
Abstract
In recent years, using nanomaterials based on multi-wall carbon nanotubes (MWCNT) through the activation of peroxymonosulfate (PMS) has attracted more attention to the degradation of organic pollutants. This research presented a new route for the synthesis of MWCNT/CoMn2O4 nanocomposite for the degradation of picric acid using advanced oxidation processes (AOPs). Firstly, CoMn2O4 nanoparticles were prepared and then loaded on MWCNT using ultrasonic waves. The results of various analyzes confirmed the successful loading of nanoparticles on carbon nanotubes. As the degradation process proceeds through oxidation processes, the high electronic conductivity of MWCNT and the active sites of Mn and Co in the nanocomposite play an essential role in activating PMS to generate reactive oxygen species (ROS). An investigation of the reaction mechanism in different conditions showed that the highest speed of picric acid decomposition in the presence of nanocomposite (98%) was in 47 min. However, the scavenger test showed that HO· and SO4·- radicals are more important in the degradation process. Meanwhile, the results showed that removing picric acid using MWCNT/CoMn2O4 was more effective than CoMn2O4 alone and confirmed the interaction effect of MWCNT nanotubes with AB2O4 nanocatalyst.
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Affiliation(s)
- Ayda Farajollahi
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
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Kataria N, Garg VK, Kumar P, Han C, Anastopoulos I, Kumar S. Carbon-based nanomaterials: systematic enumeration and proficient template for detection and remediation of hazardous pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:124829-124831. [PMID: 38012487 DOI: 10.1007/s11356-023-30989-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Affiliation(s)
- Navish Kataria
- Department of Environmental Sciences, J. C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, India.
| | - Vinod Kumar Garg
- Department of Environmental Science and Technology, Central University of Punjab, Bathinda, Punjab, India
| | - Parmod Kumar
- Department of Physics, J. C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, India
| | - Changseok Han
- Department of Environmental Engineering, College of Engineering, INHA University, Incheon, South Korea
| | | | - Sandeep Kumar
- Department of Chemistry, J. C. Bose University of Science and Technology, YMCA, Faridabad, Haryana, India
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Kumari H, Sonia, Suman, Ranga R, Chahal S, Devi S, Sharma S, Kumar S, Kumar P, Kumar S, Kumar A, Parmar R. A Review on Photocatalysis Used For Wastewater Treatment: Dye Degradation. WATER, AIR, AND SOIL POLLUTION 2023; 234:349. [PMID: 37275322 PMCID: PMC10212744 DOI: 10.1007/s11270-023-06359-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/09/2023] [Indexed: 06/07/2023]
Abstract
Water pollution is a global issue as a consequence of rapid industrialization and urbanization. Organic compounds which are generated from various industries produce problematic pollutants in water. Recently, metal oxide (TiO2, SnO2, CeO2, ZrO2, WO3, and ZnO)-based semiconductors have been explored as excellent photocatalysts in order to degrade organic pollutants in wastewater. However, their photocatalytic performance is limited due to their high band gap (UV range) and recombination time of photogenerated electron-hole pairs. Strategies for improving the performance of these metal oxides in the fields of photocatalysis are discussed. To improve their photocatalytic activity, researchers have investigated the concept of doping, formation of nanocomposites and core-shell nanostructures of metal oxides. Rare-earth doped metal oxides have the advantage of interacting with functional groups quickly because of the 4f empty orbitals. More precisely, in this review, in-depth procedures for synthesizing rare earth doped metal oxides and nonocomposites, their efficiency towards organic pollutants degradation and sources have been discussed. The major goal of this review article is to propose high-performing, cost-effective combined tactics with prospective benefits for future industrial applications solutions.
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Affiliation(s)
- Harita Kumari
- Present Address: Department of Physics, Maharshi Dayanand University, Rohtak, 124001 Haryana India
| | - Sonia
- Present Address: Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039 Haryana India
| | - Suman
- Present Address: Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039 Haryana India
| | - Rohit Ranga
- Present Address: Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039 Haryana India
| | - Surjeet Chahal
- Materials and Nano Engineering Research Laboratory, Department of Physics, School of Physical Sciences, DIT University, Dehradun, 248009 India
| | - Seema Devi
- Department of Physics, Netaji Subhas University of Technology, New Delhi, 110078 India
| | - Sourabh Sharma
- Department of Physics, Netaji Subhas University of Technology, New Delhi, 110078 India
| | - Sandeep Kumar
- J. C. Bose University of Science and Technology, YMCA, Faridabad, 121006 Haryana India
| | - Parmod Kumar
- J. C. Bose University of Science and Technology, YMCA, Faridabad, 121006 Haryana India
| | - Suresh Kumar
- Present Address: Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039 Haryana India
| | - Ashok Kumar
- Present Address: Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039 Haryana India
| | - Rajesh Parmar
- Present Address: Department of Physics, Maharshi Dayanand University, Rohtak, 124001 Haryana India
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