TY - JOUR

T1 - Effect of Pt nanoparticle decoration on the H2 storage performance of plasma-derived nanoporous graphene

AU - Kostoglou, Nikolaos

AU - Liao, Chi-Wei

AU - Wang, C.-Y.

AU - Kondo, Junko N.

AU - Tampaxis, Christos

AU - Steriotis, Theodore

AU - Giannakopoulos, Konstantinos

AU - Kontos, Athanassios G.

AU - Hinder, Steven J.

AU - Baker, Mark

AU - Bousser, Eztienne

AU - Matthews, Allan

AU - Rebholz, Claus

AU - Mitterer, Christian

N1 - Publisher Copyright: © 2020 The Authors

PY - 2021/1

Y1 - 2021/1

N2 - A nanoporous and large surface area (∼800 m 2/g) graphene-based material was produced by plasma treatment of natural flake graphite and was subsequently surface decorated with platinum (Pt) nano-sized particles via thermal reduction of a Pt precursor (chloroplatinic acid). The carbon-metal nanocomposite showed a ∼2 wt% loading of well-dispersed Pt nanoparticles (<2 nm) across its porous graphene surface, while neither a significant surface chemistry alteration nor a pore structure degradation was observed due to the Pt decoration procedure. The presence of Pt seems to slightly promote the hydrogen sorption behavior at room temperature with respect to the pure graphene, thus implying the rise of “weak” chemisorption phenomena, including a potential hydrogen “spillover” effect. The findings of this experimental study provide insights for the development of novel graphene-based nanocomposites for hydrogen storage applications at ambient conditions.

AB - A nanoporous and large surface area (∼800 m 2/g) graphene-based material was produced by plasma treatment of natural flake graphite and was subsequently surface decorated with platinum (Pt) nano-sized particles via thermal reduction of a Pt precursor (chloroplatinic acid). The carbon-metal nanocomposite showed a ∼2 wt% loading of well-dispersed Pt nanoparticles (<2 nm) across its porous graphene surface, while neither a significant surface chemistry alteration nor a pore structure degradation was observed due to the Pt decoration procedure. The presence of Pt seems to slightly promote the hydrogen sorption behavior at room temperature with respect to the pure graphene, thus implying the rise of “weak” chemisorption phenomena, including a potential hydrogen “spillover” effect. The findings of this experimental study provide insights for the development of novel graphene-based nanocomposites for hydrogen storage applications at ambient conditions.

KW - Hydrogen storage

KW - Metal decoration

KW - Nanocomposites

KW - Nanoporous graphene

KW - Plasma treatment

KW - Pt nanoparticles

UR - http://www.scopus.com/inward/record.url?scp=85091235988&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2020.08.061

DO - 10.1016/j.carbon.2020.08.061

M3 - Article

VL - 171

SP - 294

EP - 305

JO - Carbon

JF - Carbon

SN - 0008-6223

IS - 171

ER -