Green bio-synthesis of Ni/montmorillonite nanocomposite using extract of Allium jesdianum as the nano-catalyst for electrocatalytic oxidation of methanol

Sheikh-Mohseni, Mohammad Hossein; Sedaghat, Sajjad; Derakhshi, Pirouz; Safekordi, Ali Akbar

doi:10.1016/j.cjche.2020.04.017

Cited by 12 publications

(4 citation statements)

References 52 publications

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“…Another work suggested the preparation of Ni NPs/MMT using the water extract of a native Iranian plant ( Allium jesdianum ) in the presence of MMT as a support. 189 The synthesis of the Ni/MMT nanocomposite was performed using a green process with the Allium jesdianum water extract, as shown in Fig. 17a.…”

Section: Application Of Nature-inspired Materials In Fuel Cellsmentioning

confidence: 99%

Application of biowaste and nature-inspired (nano)materials in fuel cells

et al. 2023

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Section: Application Of Nature-inspired Materials In Fuel Cellsmentioning

confidence: 99%

Application of biowaste and nature-inspired (nano)materials in fuel cells

et al. 2023

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“…Some examples from this scheme are kaolinite-supported bio-fabricated Ag NPs using Murraya koenigii fruit extract [ 165 ], montmorillonite-supported Urtica dioica leaf-extract-mediated Ag NPs [ 165 ], and montmorillonite-supported Ag NPs fabricated using Ocimum basilicum L. and Teucrium Polium L. [ 166 ]. Montmorillonite-supported Ni NPs were also prepared through a similar scheme [ 167 ]. Figure 12 is a schematic representation of the synthesis method.…”

Section: Clay Modificationsmentioning

confidence: 99%

“…Contamination of the grinding medium can be avoided by using In addition to their excellent activity as antibacterial agents, clay-supported Ag NPs were established as versatile catalysts for the degradation of nitroaryl (4-nitrophenol) and methylene-blue-containing solution [168,169]. Ni NPs/montmorillonite presented excellent catalytic activity in the oxidation of methanol [167].…”

Section: Mechanochemicalmentioning

confidence: 99%

Clay-Supported Metal Oxide Nanoparticles in Catalytic Advanced Oxidation Processes: A Review

et al. 2022

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Advanced oxidation processes (AOPs) utilizing heterogeneous catalysts have attracted great attention in the last decade. The use of solid catalysts, including metal and metal oxide nanoparticle support materials, exhibited better performance compared with the use of homogeneous catalysts, which is mainly related to their stability in hostile environments and recyclability and reusability. Various solid supports have been reported to enhance the performance of metal and metal oxide catalysts for AOPs; undoubtedly, the utilization of clay as a support is the priority under consideration and has received intensive interest. This review provides up-to-date progress on the synthesis, features, and future perspectives of clay-supported metal and metal oxide for AOPs. The methods and characteristics of metal and metal oxide incorporated into the clay structure are strongly influenced by various factors in the synthesis, including the kind of clay mineral. In addition, the benefits of nanomaterials from a green chemistry perspective are key aspects for their further considerations in various applications. Special emphasis is given to the basic schemes for clay modifications and role of clay supports for the enhanced mechanism of AOPs. The scaling-up issue is suggested for being studied to further applications at industrial scale.

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“…Some easily oxidizable molecules, such as methanol, ethanol, urea, and formaldehyde, − are useful in enhancing the energy conversion efficiency of an electrolyzer. Among them, formaldehyde is widely used as a chemical material in versatile industries, including adhesives, plastics, herbicides, pharmaceuticals, resins, polyurethane, printing and dyeing auxiliaries, anticorrosion, and bactericides. , However, it is a carcinogen that can cause nasopharyngeal cancer and leukemia, even at trace levels . Hence, it is highly desirable to simultaneously purify formaldehyde wastewater and produce hydrogen if HER efficiency could be enhanced by the formaldehyde oxidation reaction (FOR).…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Hydrogen Production and Synergistic Formaldehyde Degradation

Hao,

Zhang,

Teng

et al. 2023

ACS Appl. Energy Mater.

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This study reports a simple molten salt method for the largescale synthesis of NiS/NiS 2 heterostructures. The NiS/NiS 2 sample obtained at 350 °C exhibits a high hydrogen evolution reaction (HER) activity. At 10 mA cm −2 , low HER overpotentials are required for NiS/NiS 2 in both acidic (196 mV) and alkaline electrolytes (161 mV). Furthermore, density functional theory (DFT) calculations demonstrate that NiS/NiS 2 , with an optimized electron structure, presents a significantly lower Gibbs free energy for hydrogen adsorption (0.201 eV), compared with single NiS (0.413 eV) and single NiS 2 (0.953 eV). This suggests that the NiS/NiS 2 heterostructure enables more favorable thermodynamics for hydrogen adsorption/desorption. In addition, an electrolyzer was assembled using NiS/NiS 2 as the electrodes and formaldehyde as an electrolyte solution. It was observed that in a neutral electrolyte, the required cell voltage of a formaldehyde-based electrolyzer (2.52 V) at 10 mA cm −2 was 0.33 V lower than that of a conventional water-based one (2.85 V). The cell voltage has decreased by 11.6%, demonstrating that the electrolyzer is highly energy-efficient. Also, the formaldehyde-based electrolyzer has a higher Faradaic efficiency (FE) of 80.17%, compared to the water-based electrolyzer (73.58%). Moreover, 90.4% of formaldehyde is degraded after running for 2 h at a cell voltage of 3 V. This study confirms that this innovative electrolyzer can not only efficiently degrade formaldehyde but also simultaneously produce hydrogen with a lower energy consumption. This work presents an innovative strategy for both wastewater treating and green hydrogen production.

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Green bio-synthesis of Ni/montmorillonite nanocomposite using extract of Allium jesdianum as the nano-catalyst for electrocatalytic oxidation of methanol

Cited by 12 publications

References 52 publications

Application of biowaste and nature-inspired (nano)materials in fuel cells

Application of biowaste and nature-inspired (nano)materials in fuel cells

Clay-Supported Metal Oxide Nanoparticles in Catalytic Advanced Oxidation Processes: A Review

Electrocatalytic Hydrogen Production and Synergistic Formaldehyde Degradation

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