ISSN: 0256-1115 (print version) ISSN: 1975-7220 (electronic version)
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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received February 22, 2023
Revised April 16, 2023
Accepted May 1, 2023
Acknowledgements
This research was partially supported by the Basic Science Research Capacity Enhancement Project through a Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (Grant No. 2019R1A6C1010024). We acknowledge the HRTEM Facility at SRMIST set up with support from the MNRE (Project No. 31/03/ 2014-15/PVSE-R&D), the Government of India, the SRM Institute of Science and Technology for providing the Micro-Raman Facility, and SRMIST for the high-r
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Thortveitite phase manganese vanadate (Mn2V2O7) for the removal of model organic pollutants

1Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, Chennai, Tamil Nadu, India 2School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Korea
alagirimani@gmail.com, kdhh@chonnam.ac.kr
Korean Journal of Chemical Engineering, August 2023, 40(8), 1993-2003(11), 10.1007/s11814-023-1478-z
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Abstract

Photocatalysis is useful for the long-term goal of a pollution-free environment. However, the development of new photoactive materials with enhanced photoconversion efficiency remains a serious bottleneck. This study demonstrates the preparation of low-cost, nontoxic, rod-like -Mn2V2O7 using a simple, cost-effective fabrication method. The proposed photoactive material was characterized using several analytical techniques to determine its physiochemical properties, while its photocatalytic ability for the removal of organic pollutants under direct sunlight was also assessed. The prepared -Mn2V2O7 was found to efficiently remove both Rhodamine B and methylene blue from an aqueous solution. The photoinduced and ultra-sound-assisted catalytic reduction of 4-nitrophenol (4-NP) was also demonstrated. The hydrogen-evolved photocatalytic removal of 4-NP was evaluated with different amounts of ethanol as a scavenger, with 10% ethanol exhibiting optimal efficiency. The superior organic pollutant removal ability of the proposed material is ascribed to its high surface area, superior optical properties, and suitable band edges.

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