Preparation and hydrogen storage performance of Pd nanoparticles decorated carbon nanotubes

Jeng Kuei Chang, Chih Yao Chen, Wen Ta Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Supercritical carbon dioxide (scCO2) fluid is used to decorate multi-walled carbon nanotubes (CNTs) with palladium (Pd) nanoparticles. Pd(II) hexafluoroacetylacetonate (Pd(hfa)2) is dissolved in scCO2 as a metal precursor. Electrochemical reduction of the Pd(II) is executed by dimethyl amineborane (DMAB). Owing to the high diffusivity, near-zero surface tension, and low viscosity of the scCO2 fluid, the deposited Pd nanoparticles are uniformly dispersed and tightly anchored on the surface of CNTs. The microstructure, chemical composition, and crystallinity of the prepared Pd/CNTs nano-composites are characterized with a transmission electron microscope (TEM), an X-ray energy dispersive spectroscope (EDS), and an X-ray diffractometer (XRD), respectively. The experimental results indicate that the size and the amount of Pd particles on CNTs can be manipulated by adjusting the precursor concentration. Moreover, hydrogen storage capability of the Pd/CNTs composite, evaluated with a high-pressure microbalance (at 6.89 MPa and 25°C), is 1.31 wt %, which is approximately four times higher than that (0.33 wt%) of pristine CNTs.

Original languageEnglish
Title of host publicationHydrogen Production, Transport, and Storage 3
Pages33-40
Number of pages8
Edition10
DOIs
Publication statusPublished - 2009 Dec 1
EventHydrogen Production, Transport, and Storage 3 - 215th ECS Meeting - San Francisco, CA, United States
Duration: 2009 May 242009 May 29

Publication series

NameECS Transactions
Number10
Volume19
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherHydrogen Production, Transport, and Storage 3 - 215th ECS Meeting
CountryUnited States
CitySan Francisco, CA
Period09-05-2409-05-29

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Chang, J. K., Chen, C. Y., & Tsai, W. T. (2009). Preparation and hydrogen storage performance of Pd nanoparticles decorated carbon nanotubes. In Hydrogen Production, Transport, and Storage 3 (10 ed., pp. 33-40). (ECS Transactions; Vol. 19, No. 10). https://doi.org/10.1149/1.3237106