Synergistic photocatalytic breakdown of azo dyes coupled with H 2 generation via Cr-doped α-Fe 2 O 3 nanoparticles.

Autor: Dhariwal N; Nano Magnetic Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India.; Material Analysis and Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India., Yadav P; Nano Magnetic Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India.; Material Analysis and Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India., Kumari M; Nano Magnetic Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India.; Material Analysis and Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India., Sanger A; Nano Magnetic Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India., Mishra YK; Mads Clausen Institute, SDU NanoSYD, University of Southern Denmark, Alsion 2, 6400, Sønderborg, Denmark., Kumar V; Nano Magnetic Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India. vinod@nsut.ac.in., Thakur OP; Material Analysis and Research Laboratory, Department of Physics, NSUT, Dwarka, New Delhi, 110078, India.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Aug 28; Vol. 14 (1), pp. 19916. Date of Electronic Publication: 2024 Aug 28.
DOI: 10.1038/s41598-024-65672-3
Abstrakt: This research addresses the scalable and inexpensive synthesis of α-Fe 2 O 3 via hydrothermal method without any precipitating agent as well as the enhancement of solar driven photocatalytic and H 2 production through doping different chromium proportions. Competency of α-Fe 2 O 3 , both pure and doped with chromium, to function as photocatalyst was evaluated by its interaction with multiple dyes, which was real-time monitored utilizing (Internet of Things) IoT technique. By adding chromium, the rate of deterioration increased substantially from 15 to 94% for TB under sunlight in a remarkably brief 20 min by employing a very small amount of Cr 0.8 Fe 1.2 O 3 (0.3 g/L), as evidenced by high degree of mineralization i.e. 85% and LC-HRMS. Also, the rapid breakdown of Trypan Blue (TB) was indicated by BOD 5 /COD ratio. Moreover, Cr-doped α-Fe 2 O 3 displays excellent H 2 production (~ 132 μmol h -1  g -1 ) as compared to α-Fe 2 O 3 . This work highlights the potential utilization of Cr-doped α-Fe 2 O 3 for the purification of industrial waste water and green energy harvesting.
(© 2024. The Author(s).)
Databáze: MEDLINE
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