Single-step preparation and hydrogenation of single walled carbon nanotubes-titanium dioxide composite

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• 作者：D. Silambarasan ; V.J. Surya ; K. Iyakutti ; V. Vasu
• 关键词：SWCNTs-TiO2 composite ; Electron beam evaporation ; Hydrogenation ; Dehydrogenation ; Binding energy
• 刊名：International Journal of Hydrogen Energy
• 出版年：2 January, 2014
• 年：2014
• 卷：39
• 期：1
• 页码：391-397
• 全文大小：826 K

文摘

The composite material made up of carbon nanotubes (CNTs) and metal oxide nanostructures have been investigated for hydrogen storage application. The present experimental work deals with the investigation of hydrogen storage in single walled carbon nanotubes-titanium dioxide (SWCNTs-TiO₂) composite. The SWCNTs-TiO₂ composite has been made by depositing the pellet containing the mixture of SWCNTs and TiO₂ using electron beam (EB) evaporation technique in hydrogen ambient. The preparation and hydrogenation of the SWCNTs-TiO₂ composite have been done in a single-step. The characterization results expose that the deposition of SWCNTs with TiO₂ material is possible using EB evaporation technique without any significant structural decomposition of SWCNTs. The amount of hydrogen incorporated is found to be 3.2聽wt.%, and it is attributed to both the synergetic action of SWCNTs-TiO₂ nanostructures and the method of preparation. The stored hydrogen is found to be released completely in the temperature range of 120-215聽掳C.