Water-Splitting Hydrogen Production by an Iron-Modified Bentonite Clay (BC) Laced with Ag Nanoclusters.

Mantsopa K Zamisa, Giuseppe Cavallaro, Busisiwe P Mabuea, Olayemi J Fakayode, Mayetu Segale, Dieketseng Tsotetsi, Peter R Makgwane, Bakang Mothudi, Mokhotjwa Dhlamini, Tumelo Seadira

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Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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10 authors.

Mantsopa K ZamisaDepartment of Chemical and Materials Engineering, University of South Africa, Johannesburg, Florida 1710, South Africa.

Giuseppe CavallaroDepartment of Physics and Chemistry E. Segrè, University of Palermo, Viale Delle Scienze, Ed. 17, Palermo 90128, Italy.ORCID https://orcid.org/0000-0002-2145-0161

Busisiwe P MabueaCentre for Materials Science, University of South Africa, Johannesburg 1710, Florida, South Africa.

Olayemi J FakayodeCentre for Materials Science, University of South Africa, Johannesburg 1710, Florida, South Africa.ORCID https://orcid.org/0000-0002-5699-7204

Mayetu SegaleDepartment of Chemical and Materials Engineering, University of South Africa, Johannesburg, Florida 1710, South Africa.

Dieketseng TsotetsiDepartment of Physics, University of South Africa, Johannesburg 1710, Florida, South Africa.

Peter R MakgwaneInstitute of Catalysis and Energy Solutions, University of South Africa, Johannesburg 1710, Florida, South Africa.

Bakang MothudiCentre for Materials Science, University of South Africa, Johannesburg 1710, Florida, South Africa.

Mokhotjwa DhlaminiDepartment of Physics, University of South Africa, Johannesburg 1710, Florida, South Africa.

Tumelo SeadiraDepartment of Chemical and Materials Engineering, University of South Africa, Johannesburg, Florida 1710, South Africa.

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6 · The paper itself

Abstract

This study examines the use of natural bentonite clay (BC) modified with aluminum and iron as low-cost electrocatalysts for the hydrogen evolution reaction (HER) in an acidic medium. The successful modification process was accompanied by changes in the basal spacing, an increase in the BET surface area and pore volume, and promotion of mass transfer for enhanced hydrogen production. After mechanically blending with silver (Ag) nanoclusters, the more sustainable and higher surface-area exhibiting Fe-clay composite showed about 21% increase in hydrogen production and a 134% increase in turnover frequency (TOF) relative to the reversible hydrogen electrode (RHE). The Ag-Fe-Clay composite achieved a current density of 274 mA/cm

Identifiers

PMID42598406

DOI10.1021/acsomega.6c02850

PMCPMC13470804

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