Niobic acid as a support for microheterogeneous nanocatalysis of sodium borohydride hydrolysis under mild conditions.

Autor: Bousada GM; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br.; Institut des Sciences Moléculaires, Université de Bordeaux, UMR CNRS 5255 Talence 33405 Cedex France., Nogueira da Silva V; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br., Fernandes de Souza B; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br., de Oliveira RS; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br., Machado Junior I; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br., da Cunha CHF; Department of Chemical Engineering, Universidade Federal de São Carlos São Carlos São Paulo Brazil., Astruc D; Institut des Sciences Moléculaires, Université de Bordeaux, UMR CNRS 5255 Talence 33405 Cedex France., Teixeira RR; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br., Lopes Moreira RP; Department of Chemistry, Universidade Federal de Viçosa Viçosa Minas Gerais 36570-000 Brazil renata.plopes@ufv.br.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Jun 17; Vol. 14 (27), pp. 19459-19471. Date of Electronic Publication: 2024 Jun 17 (Print Publication: 2024).
DOI: 10.1039/d4ra01879f
Abstrakt: This study explores the stabilization by niobic acid, of Pt, Ni, Pd, and Au nanoparticles (NPs) for the efficient microheterogeneous catalysis of NaBH 4 hydrolysis for hydrogen production. Niobic acid is the most widely studied Nb 2 O 5 polymorph, and it is employed here for the first time for this key reaction relevant to green energy. Structural insights from XRD, Raman, and FTIR spectroscopies, combined with hydrogen production data, reveal the role of niobic acid's Brønsted acidity in its catalytic activity. The supported NPs showed significantly higher efficiency than the non-supported counterparts regarding turnover frequency, average hydrogen production rate, and cost. Among the tested NPs, PtNPs and NiNPs demonstrate the most favorable results. The data imply mechanism changes during the reaction, and the kinetic isotope assay indicates a primary isotope effect. Reusability assays demonstrate consistent yields over five cycles for PtNPs, although catalytic efficiency decreases, likely due to the formation of reaction byproducts.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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