Preparation and hydrogen storage performance of Pd nanoparticles decorated carbon nanotubes

Jeng Kuei Chang, Chih Yao Chen, Wen Ta Tsai

研究成果: Conference contribution

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 - 2009 十二月 1
事件Hydrogen Production, Transport, and Storage 3 - 215th ECS Meeting - San Francisco, CA, United States
持續時間: 2009 五月 242009 五月 29

出版系列

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

Other

OtherHydrogen Production, Transport, and Storage 3 - 215th ECS Meeting
國家/地區United States
城市San Francisco, CA
期間09-05-2409-05-29

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

指紋

深入研究「Preparation and hydrogen storage performance of Pd nanoparticles decorated carbon nanotubes」主題。共同形成了獨特的指紋。

引用此