Preparation and hydrogen storage performance of Pd nanoparticles decorated carbon nanotubes

Jeng-Kuei Chang*, Chih Yao Chen, Wen Ta Tsai

*Corresponding author for this work

研究成果: Conference contribution同行評審

摘要

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.

原文English
主出版物標題Hydrogen Production, Transport, and Storage 3
頁面33-40
頁數8
版本10
DOIs
出版狀態Published - 1 十二月 2009
事件Hydrogen Production, Transport, and Storage 3 - 215th ECS Meeting - San Francisco, CA, United States
持續時間: 24 五月 200929 五月 2009

出版系列

名字ECS Transactions
號碼10
19
ISSN(列印)1938-5862
ISSN(電子)1938-6737

Conference

ConferenceHydrogen Production, Transport, and Storage 3 - 215th ECS Meeting
國家United States
城市San Francisco, CA
期間24/05/0929/05/09

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