Ultralow-Concentration Pt-Decorated Carbon Sphere Catalyst for Enhanced Hydrogen Evolution Reaction
Por:
Bogireddy, NKR, Kesarla, MK, Elías, AL, Lei, Y, Cruz-Silva, R, Zhang, F, Liu, H, Terrones, M, Agarwal, V
Publicada:
15 nov 2024
Ahead of Print:
1 nov 2024
Resumen:
Ultralow decoration of platinum nanoparticles (Pt NPs) (0.32 wt %) onto carbon spheres (CS) has been developed for hybrid formation, using hydrothermal heat treatment, followed by chemical reduction of nanoparticles. The successful decoration of CSs bearing amine groups with platinum nanoparticles was confirmed directly by X-ray photoelectron spectroscopy. The uniform distribution and crystallinity of the Pt NPs in the hybrid structures were confirmed from X-ray diffraction spectroscopy and transmission electron microscopy. The hydrogen evolution reaction studied on the proposed Pt-CS hybrids reveals an onset potential of only -144 mV (vs RHE, reversible hydrogen electrode) with a current density of 10 mA/cm2 under an acidic 0.5 M H2SO4 medium, which exhibits a better performance as compared to a similar Pt-carbon hybrid catalyst reported in the literature. The Pt-CS hybrid stability assessments revealed a minimal overpotential loss (9 mV) from 144 to 153 mV after 200 cycles. Such hybrids have possible applications in environmental water purification and renewable energy production.
Filiaciones:
Bogireddy, NKR:
Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico
Kesarla, MK:
Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico
Elías, AL:
Binghamton Univ, Dept Phys, Binghamton, NY 13902 USA
Lei, Y:
Penn State Univ, Ctr Dimens & Layered Mat 2, Dept Phys, University Pk, PA 16802 USA
Cruz-Silva, R:
Ctr Invest Quim Aplicada, Saltillo 25294, Coahuila, Mexico
Zhang, F:
Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
Liu, H:
Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
Terrones, M:
Penn State Univ, Ctr Dimens & Layered Mat 2, Dept Phys, University Pk, PA 16802 USA
Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
Agarwal, V:
IICBA Univ Autonoma Estado Morelos, Ctr Invest Ingn & Ciencias Aplicadas, Dept Mat Sci & Engn, Cuernavaca 62209, Morelos, Mexico
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