Reagent ratio dependent physical properties and electrochemical performance of NiO nanoparticles synthesized using solvent deficient approach

Kore, Rohan M.; Thakur, A. V.; Fugare, B. Y.; Lokhande, B. J.

doi:10.1063/1.5029200

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…Kore et al [22] investigated the synthesis of NiO nanoparticles using the SD approach. By changing the reagent ratio of nickel nitrate and ammonium bicarbonate (mole ratio from 0.5 to 4) they achieved a measurable effect on the formation of NiO nanoparticles.…”

Section: Binary Metal Oxidesmentioning

confidence: 99%

A Review of Recent Development of the Solvent-Deficient Method

Zeljković

2022

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The challenges of modern society and the requirements for high-tech materials have led to a new stage in the development of chemical synthesis methods. This stage is demanding a reliable, controllable, and green approach to the production of necessary materials. One of the recently developed approaches for metal oxide nanoparticles synthesis is the solvent deficient method. A cutting edge of this synthetic method is a synthesis with increased control throughout chemical transformation resulting in optimal conditions for materials production. As a result, oxide nanoparticles are produced fast, environmentally friendly, cost-effective, and with low energy consumption. On the other hand, a complex reaction mechanism is presenting a challenge for reliable kinetic studies. The present review follows the recent trends in the development of the solvent deficient method concerning the binary, ternary, and complex metal oxides. Special attention is given to considering approaches responsible for desirable mechanisms of catalytic applications. In future development, the reported synthesis method is expected to be employed in a high entropy oxides formation. Due to simple preparation steps, it will be possible to automatize the reaction procedure and investigate a large number of possible compositions which is imperative for new complex materials. Finally, precursors heating could be transformed from conventional to microwave. Solvent-deficient method deals with precursors sensitive to microwave irradiation which could ensure rapid heating and transformation to desirable oxide nanomaterials.

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Section: Binary Metal Oxidesmentioning

confidence: 99%

A Review of Recent Development of the Solvent-Deficient Method

Zeljković

2022

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“…One of the promising synthetic approaches for limiting the production of waste and consume less energy is to develop solvent-less synthesis strategies. Recent studies – mention the facile synthesis of various metal oxides and mixed oxides for catalytic activity (Al 2 O 3 and Cu, La, Pd or MnO x -doped Al 2 O 3 , Ni oxide and hydroxide, , CuO, Fe 2 O 3 , Ni and ZrO 2 doped CeO 2 , or Ni doped ZnO and iron phosphide catalysts) by solvent-less mechanosynthesis methods using ammonium bicarbonate (NH 4 HCO 3 ) and hydrated metal nitrates or metal chloride in stoichiometric proportions. This approach requires several washing steps (for removing large quantities of ammonium salt byproducts) and/or a calcination step producing HNO 3 (or HCl) and ammonia.…”

Section: Introductionmentioning

confidence: 99%

Solvent-free Preparation of Ru/Al₂O₃ Catalysts for CO₂ Methanation: An Example of Frugal Innovation

Haddad,

Zhao,

Miche

et al. 2023

Chem. Mater.

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To reduce the environmental impact of supported catalyst production in compliance with the recommendations of the UN's 12th objective, which encourages more sustainable consumption and production patterns, we propose to revisit sol− gel chemistry in a more frugal mode. The principle of frugal innovation is to simplify products and processes, eliminate complexities to make solutions easier to understand and use, and reduce production costs. By this way, the synthesis of rutheniumbased catalysts supported on γ-AlOOH and γ-Al 2 O 3 is revised via solvent-free sol−gel chemistry. Such catalysts are successfully prepared in one-pot preparation of the active phase and the support using Ru(acac) 3 /Al alkoxide that requires no sacrificial organic pore-generating agent, no washing, and no filtration and produces no liquid waste. The mixed Ru/Al precursor is hydrolyzed with a stoichiometric amount of water without any solvent. The obtained materials containing 1 and 3% Ru/Al molar ratios have high specific surface areas, from 300 to 690 m 2 •g −1 and exhibit well dispersed NPs of 1−4 nm on γ-AlOOH with interesting CO 2 methanation activity and 100% CH 4 selectivity. This proves that a frugal synthesis approach can do as well as traditional synthesis methods while having a much lower environmental impact (cE-factor, water consumption, and energy consumption are 24, 69, and 24 to 42 times lower, respectively) than the standard multistep protocol..

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Facile solvent deficient synthesis of mesoporous Co3O4 nanoparticles for electrochemical energy storage

Kore

Lokhande

2020

J Mater Sci: Mater Electron

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Reagent ratio dependent physical properties and electrochemical performance of NiO nanoparticles synthesized using solvent deficient approach

Cited by 6 publications

References 7 publications

A Review of Recent Development of the Solvent-Deficient Method

A Review of Recent Development of the Solvent-Deficient Method

Solvent-free Preparation of Ru/Al₂O₃ Catalysts for CO₂ Methanation: An Example of Frugal Innovation

Facile solvent deficient synthesis of mesoporous Co3O4 nanoparticles for electrochemical energy storage

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Reagent ratio dependent physical properties and electrochemical performance of NiO nanoparticles synthesized using solvent deficient approach

Cited by 6 publications

References 7 publications

A Review of Recent Development of the Solvent-Deficient Method

A Review of Recent Development of the Solvent-Deficient Method

Solvent-free Preparation of Ru/Al2O3 Catalysts for CO2 Methanation: An Example of Frugal Innovation

Facile solvent deficient synthesis of mesoporous Co3O4 nanoparticles for electrochemical energy storage

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Product

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Solvent-free Preparation of Ru/Al₂O₃ Catalysts for CO₂ Methanation: An Example of Frugal Innovation