In-situ synthesis of reduced graphene oxide templated MIL-53(Fe) nanorods for photo-catalytic degradation of organic dyes under sunlight

This article, we present a thorough and straightforward hydrothermal method towards the production of reduced graphene oxide templated MIL-53(Fe) hybrids RGO@MIL-53(Fe). The structural characteristics of created hybrids were identified by using BET, FESEM, powder X-ray diffraction, and FTIR techniques. Methylene blue (MB) dye (a model water pollutant) was used to evaluate H2O2-assisted photo-catalytic efficiency of RGO@MIL-53(Fe).
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In-situ synthesis of reduced graphene oxide templated MIL-53(Fe) nanorods for photo-catalytic degradation of organic dyes under sunlightCite this paper: Vietnam J. Chem., 2023, 61(5), 646-654 Research articleDOI: 10.1002/vjch.202300126 In-situ synthesis of reduced graphene oxide templated MIL-53(Fe) nanorods for photo-catalytic degradation of organic dyes under sunlight Sonu Jakhar, Nirankar Singh*, Samarjeet Singh Siwal Department of Chemistry, M. M. Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana-133207, India Submitted April 2, 2023; Revised May 3, 2023; Accepted May 29, 2023Abstract Due to outstanding chemical and physical characteristics, metal-organic-frameworks (MOFs) are frequentlyapprenticed for environmental clean-up. Within this article, we present a thorough and straightforward hydrothermalmethod towards the production of reduced graphene oxide templated MIL-53(Fe) hybrids RGO@MIL-53(Fe). Thestructural characteristics of created hybrids were identified by using BET, FESEM, powder X-ray diffraction, and FTIRtechniques. Methylene blue (MB) dye (a model water pollutant) was used to evaluate H2O2-assisted photo-catalyticefficiency of RGO@MIL-53(Fe). In contrast to pristine MIL-53(Fe)-H2O2, the RGO@MIL-53(Fe)-H2O2 systemdemonstrated improved photodegradation efficiency (>99%) for the elimination of MB over 60 minutes of solarirradiation. Furthermore, another dye rhodamine B (RhB) was almost 100% degraded in similar conditions within 80minutes of sunlight. The RGO@MIL-53(Fe) hetero-structure, which promotes quick electron transport and reduces therate at which photo-induced charge carriers recombine, is credited as the main cause of the improvement in photo-catalytic efficiency. Keywords. RGO@MIL-53(Fe), photo-degradation, metal-organic-frameworks.1. INTRODUCTION micro-pollutants. The photo-catalytic degradation is considered as sustainable, green and most promisingWater pollution by organic contaminants is a biggest technique for effective removal of organicchallenge for human populations well as the contaminants. Building visible light responsiveecosystem.[1] Importantly, continuously increasing photo-catalysts with low photo generated carrierwater pollution has become severe concern in recent recombination kinetics and low optical band gap thatyears. After industrial revolution, wide range of produce substantial concentrations of radicalmanufacturing units such as fabric, polymers, oxidative species have been observed as an effectivecosmetics, food processing, paper, pharmaceutical strategy for environmental remediation.[10] Theetc. utilize huge quantity of dyes in various utilization of metal-organic-frameworks (MOFs)processes[2-4] which is consequently discharged into have increased in last decades as effective photo-water bodies (lakes, rivers, oceans etc. These dyes catalytic materials. MOFs are a group of porousare non-biodegradable, persistent in water bodies coordination polymers which contains metal nodesand responsible for many health hazards.[5] and organic linkers. They display remarkablePresently, over 7×105 tonnes of more than 0.1 structural characteristics such as electricalmillion different types of dyes are produced annually conductivity, tuneable porosity, high flexibility,and significant portion (nearly 15%) of total extremely high surface area, well-ordered structure,production of these pollutants are released into chemical stability, and intrinsic photochemicalmarine settings.[6] Therefore, the elimination of behaviours. Due to their promising qualities, theycolorants (dyes) from contaminated water is highly represent an effective contender for a variety ofdesirable but quite challenging. The various applications including medicines, administration,traditional environmental remediation techniques energy conversion, light harvesting, gas storage, andlike adsorption, precipitation, biological degradation, environmental clean-up.[11-13] MOFs can be photo-nano-filtration etc.[7-9] are continuously used but they excited suitably when interacting with incident lightinvolve high cost and show low efficiency towards that matches their energy in respect of ligand-to-646 Wiley Online Library © 2023 Vietnam Academy of Science and ...