Biology‐Based Synthesis of Nickel Single Atoms on the Surface of Geobacter sulfurreducens as an Efficient Electrocatalyst for Alkaline Water Electrolysis

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract Single‐atom metal catalysts are promising electrocatalysts for water electrolysis. Nickel‐based have shown attractive application prospects However, synthesizing stable Ni single atoms using chemical and physical approaches remains a practical challenge. Here, facile precise method nickel on the surface of Geobacter sulfurreducens microbial‐mediated extracellular electron transfer (EET) process is demonstrated. It that G. can effectively anchor their surface. X‐ray absorption near‐edge structure Fourier‐transformed extended fine spectroscopy confirm atom coordinated to nitrogen in cytochromes. The as‐synthesized exhibit excellent bifunctional catalytic properties alkaline electrolysis with low overpotential ( η ) achieve current density (10 mA cm −2 both hydrogen evolution reactions = 80 mV) oxygen reaction 330 minimal catalyst loading 0.0015 mg . single‐atom shows long‐term stability at constant electrode potential. This synthesis based EET capability electroactive bacteria provides simple scalable approach producing low‐cost highly efficient nonnoble transition applications.

Language: Английский

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Magnetic DL-methionine grafted to chitosan by EDTA linker nanomaterial: a highly efficient multifunctional organocatalyst for the synthesis of highly substituted imidazole derivatives under green conditions

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

In this research, a novel protocol for the synthesis of imidazole derivatives with various substitutions has been investigated in presence new and highly effective magnetic decorated DL-methionine amino acid grafted onto chitosan backbone by using EDTA linker (CS − MET@Fe₃O₄) under green chemistry conditions. The CS MET@Fe₃O₄ nanocomposite was properly characterized FTIR, EDX, XRD, FESEM, TGA VSM spectroscopic, microscopic, or analytical methods. used as efficient heterogeneous organocatalyst wide range three- four-substituted derivatives, an important pharmaceutical scaffold, through multicomponent reactioins (MCRs) strategy. multifunctional nanocatalyst exhibited high catalytic activity, selectivity, stability to promote reactions benzoin benzyl, different aldehyde ammonim acetate well aromatic aliphatic amine EtOH solvent. Key advantages present are excellent yields, use low loading renewable, bio-based biodegredable chitosan- acid-based nanomaterial, simple procedure preparation nanomaterial imoidazole derivatives. addition, catalyst's properties, including its properties appropriate surface area characteristicscontribute performance. Fuerthermore, can be up six cycles only slight decrease activity.

Language: Английский

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Atomically dispersed iron sites from eco-friendly microbial mycelium as highly efficient hydrogenation catalyst

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 679, P. 824 - 833

Published: Oct. 9, 2024

Language: Английский

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Methionine-ethylenediaminetetraacetic acid-chitosan magnetic nanocomposite: a multifunctional organocatalyst for green heteroannulation of imidazoles

Carbohydrate Polymer Technologies and Applications, Journal Year: 2024, Volume and Issue: unknown, P. 100638 - 100638

Published: Dec. 1, 2024

Language: Английский

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