Crystal shape controlled H2 storage rate in nanoporous carbon composite with ultra-fine Pt nanoparticle

Tsan Yao Chen; Yanhui Zhang; Liang Ching Hsu; Alice Hu; Yu Zhuang; Chia Ming Fan; Cheng-Yu Wang; Tsui Yun Chung; Cheng Si Tsao; Haw Yeu Chuang

doi:10.1038/srep42438

Crystal shape controlled H₂ storage rate in nanoporous carbon composite with ultra-fine Pt nanoparticle

Tsan Yao Chen^*, Yanhui Zhang, Liang Ching Hsu, Alice Hu, Yu Zhuang, Chia Ming Fan, Cheng-Yu Wang, Tsui Yun Chung, Cheng Si Tsao, Haw Yeu Chuang

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

This study demonstrates that the hydrogen storage rate (HSR) of nanoporous carbon supported platinum nanocatalysts (NC) is determined by their heterojunction and geometric configurations. The present NC is synthesized in an average particle size of ∼1.5 nm by incipient wetness impregnation of Pt⁴⁺ at carbon support followed by annealing in H 2 ambient at 102-105 °C. Among the steps in hydrogen storage, decomposition of H² molecule into 2 H atoms on Pt NC surface is the deciding factor in HSR that is controlled by the thickness of Pt NC. For the best condition, HSR of Pt NC in 1∼2 atomic layers thick (4.7 μg/g min) is 2.6 times faster than that (1.3 μg/g min) of Pt NC with higher than 3 atomic layers thick.

Original language	English
Article number	42438
Journal	Scientific reports
Volume	7
DOIs	https://doi.org/10.1038/srep42438
State	Published - 14 Feb 2017

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title = "Crystal shape controlled H2 storage rate in nanoporous carbon composite with ultra-fine Pt nanoparticle",

abstract = "This study demonstrates that the hydrogen storage rate (HSR) of nanoporous carbon supported platinum nanocatalysts (NC) is determined by their heterojunction and geometric configurations. The present NC is synthesized in an average particle size of ∼1.5 nm by incipient wetness impregnation of Pt4+ at carbon support followed by annealing in H 2 ambient at 102-105 °C. Among the steps in hydrogen storage, decomposition of H2 molecule into 2 H atoms on Pt NC surface is the deciding factor in HSR that is controlled by the thickness of Pt NC. For the best condition, HSR of Pt NC in 1∼2 atomic layers thick (4.7 μg/g min) is 2.6 times faster than that (1.3 μg/g min) of Pt NC with higher than 3 atomic layers thick.",

author = "Chen, {Tsan Yao} and Yanhui Zhang and Hsu, {Liang Ching} and Alice Hu and Yu Zhuang and Fan, {Chia Ming} and Cheng-Yu Wang and Chung, {Tsui Yun} and Tsao, {Cheng Si} and Chuang, {Haw Yeu}",

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T1 - Crystal shape controlled H2 storage rate in nanoporous carbon composite with ultra-fine Pt nanoparticle

AU - Chen, Tsan Yao

AU - Zhang, Yanhui

AU - Hsu, Liang Ching

AU - Hu, Alice

AU - Zhuang, Yu

AU - Fan, Chia Ming

AU - Wang, Cheng-Yu

AU - Chung, Tsui Yun

AU - Tsao, Cheng Si

AU - Chuang, Haw Yeu

PY - 2017/2/14

Y1 - 2017/2/14

N2 - This study demonstrates that the hydrogen storage rate (HSR) of nanoporous carbon supported platinum nanocatalysts (NC) is determined by their heterojunction and geometric configurations. The present NC is synthesized in an average particle size of ∼1.5 nm by incipient wetness impregnation of Pt4+ at carbon support followed by annealing in H 2 ambient at 102-105 °C. Among the steps in hydrogen storage, decomposition of H2 molecule into 2 H atoms on Pt NC surface is the deciding factor in HSR that is controlled by the thickness of Pt NC. For the best condition, HSR of Pt NC in 1∼2 atomic layers thick (4.7 μg/g min) is 2.6 times faster than that (1.3 μg/g min) of Pt NC with higher than 3 atomic layers thick.

AB - This study demonstrates that the hydrogen storage rate (HSR) of nanoporous carbon supported platinum nanocatalysts (NC) is determined by their heterojunction and geometric configurations. The present NC is synthesized in an average particle size of ∼1.5 nm by incipient wetness impregnation of Pt4+ at carbon support followed by annealing in H 2 ambient at 102-105 °C. Among the steps in hydrogen storage, decomposition of H2 molecule into 2 H atoms on Pt NC surface is the deciding factor in HSR that is controlled by the thickness of Pt NC. For the best condition, HSR of Pt NC in 1∼2 atomic layers thick (4.7 μg/g min) is 2.6 times faster than that (1.3 μg/g min) of Pt NC with higher than 3 atomic layers thick.

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Crystal shape controlled H₂ storage rate in nanoporous carbon composite with ultra-fine Pt nanoparticle

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