7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Hydrogen storage in ZnO-CNF hybrid nanostructures

8 Jul 2014, 17:10
1h 50m
D Ring ground level

D Ring ground level

Board: A.167
Poster Presentation Track A - Division for Physics of Condensed Matter and Materials Poster1

Speaker

Mr Charles Thethwayo (University of Zululand)

Main supervisor (name and email)<br>and his / her institution

Prof OM Ndwandwe, muzi.ndwandwe@gmail.com, University of Zululand

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

In this work, we study zinc oxide carbon nanofibers hybrid (ZnO-CNFs) for hydrogen storage. Zinc Oxide thin films have been deposited using DC magnetron sputtering. We have then grown aligned ZnO nanorods on the ZnO thin films, and then synthesis ZnO-CNFs by Chemical vapour deposition (CVD), using acetylene (C2H2) as a source of carbon. The characterisation techniques involved in this work are: Scanning electron microscopy (SEM) for the structure and morphology of ZnO nanorods and ZnO-CNFs, energy dispersive X-rays spectroscopy (EDS/EDX) for chemical composition, Atomic force microscopy (AFM) for surface morphology, X-ray diffraction XRD for crystal structure.

Carbon nanofibers have small diameters, a pore-size distribution which leads to excellent adsorption capacity. Elastic Recoil Detection Analysis (ERDA) results are presented and they show promise that these ZnO-CNFs are promising candidates for hydrogen storage. The results show that the temperature has an effect on the amount of hydrogen absorbed, at lower temperatures hydrogen is detected most on the surface and at higher temperatures hydrogen is detected on the surface and on the bulk which yield a higher hydrogen sorption. SEM images shows that the thickness of the ZnO-CNFs decreases with the increase in temperature.

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?

MSc

Primary author

Mr Charles Thethwayo (University of Zululand)

Co-authors

Mr Amanda Sefage (University of Zululand) Prof. Muzi Ndwandwe (University of Zululand) Dr Puleng Mbuyisa (University of Zululand) Mr Thembinkosi Nyawo (University of Zululand)

Presentation Materials

There are no materials yet.

Peer reviewing

Paper