AI Article Synopsis
- * Using techniques like XRD, Raman, and FTIR spectroscopy, researchers found that the Brønsted acidity of niobic acid plays a significant role in its catalytic effectiveness, resulting in supported nanoparticles performing better than unsupported ones.
- * Among the nanoparticles tested, Pt and Ni showed the highest efficiency, with Pt maintaining good reusability over multiple cycles, although its activity declined over time due to byproduct formation.
Article Abstract
This study explores the stabilization by niobic acid, of Pt, Ni, Pd, and Au nanoparticles (NPs) for the efficient microheterogeneous catalysis of NaBH hydrolysis for hydrogen production. Niobic acid is the most widely studied NbO 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.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11182415 | PMC |
| http://dx.doi.org/10.1039/d4ra01879f | DOI Listing |
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