Microwave-assisted preparation of Ag/Ag2S carbon hybrid structures from pig bristles as efficient HER catalysts

Ag/Ag2S hybrid structures have recently attracted significant interest due to their high chemical and thermal stability, in addition to their unique optical and electrical properties. However, their standard synthetic protocols have important drawbacks including long term and harsh reaction conditions and the utilization of highly toxic sulfur precursors. Herein, an innovative, simple one-pot green approach for the synthesis of the Ag/Ag2S carbon hybrid structures is reported. The procedure involves a one-step microwave-assisted method using ethylene glycol as a solvent and reducing agent, pig bristles as a sulphur and carbon source and silver nitrate as a metal precursor. Different amounts of silver nitrate were employed in order to investigate the synthetic mechanism for the formation of zerovalent silver over silver sulphide nanoparticles, producing three different samples. The materials were characterized by XRD, SEM, EDX, N2 physisorption and XPS spectroscopy. Aiming to prove the efficiency of the as-synthesized compounds, their electrocatalytic activities were explored in the hydrogen evolution reaction (HER) using linear sweep voltammetry. © The Royal Society of Chemistry.

Authors
Cova C.M.1 , Zuliani A.1 , Puente Santiago A.R. , Caballero A.2 , Muñoz-Batista M.J.1 , Luque R. 1, 3
Publisher
Royal Society of Chemistry
Number of issue
43
Language
English
Pages
21516-21523
Status
Published
Volume
6
Year
2018
Organizations
  • 1 Departamento de Quımica Organica, Universidad de Cordoba, Edificio Marie-Curie (C-3), Ctra Nnal IV-A, Km 396, Cordoba, Spain
  • 2 Departamento de Química Inorgánica e Ingeniería Química, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014, Córdoba, Spain
  • 3 Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Str. Moscow117198, Russian Federation
Keywords
Chemical stability; Ethylene; Ethylene glycol; Mammals; Nitrates; Organic solvents; Silver nanoparticles; Sulfur; Sulfur compounds; Electrocatalytic activity; Hydrogen evolution reactions; Linear sweep voltammetry; Microwave-assisted methods; Microwave-assisted preparation; Optical and electrical properties; Reaction conditions; Synthetic protocols; Silver compounds
Date of creation
04.02.2019
Date of change
04.02.2019
Short link
https://repository.rudn.ru/en/records/article/record/36476/
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