Display options
Cite
Mbuyisa PN, Rigoni F, Sangaletti L, et al. Growth of hybrid carbon nanostructures on iron-decorated ZnO nanorods. Nanotechnology. 2016;27(14):145605doi: 10.1088/0957-4484/27/14/145605.
Mbuyisa, P. N., Rigoni, F., Sangaletti, L., Ponzoni, S., Pagliara, S., Goldoni, A., Ndwandwe, M., & Cepek, C. (2016). Growth of hybrid carbon nanostructures on iron-decorated ZnO nanorods. Nanotechnology, 27(14), 145605. https://doi.org/10.1088/0957-4484/27/14/145605
Mbuyisa, Puleng N, et al. "Growth of hybrid carbon nanostructures on iron-decorated ZnO nanorods." Nanotechnology vol. 27,14 (2016): 145605. doi: https://doi.org/10.1088/0957-4484/27/14/145605
Mbuyisa PN, Rigoni F, Sangaletti L, Ponzoni S, Pagliara S, Goldoni A, Ndwandwe M, Cepek C. Growth of hybrid carbon nanostructures on iron-decorated ZnO nanorods. Nanotechnology. 2016 Apr 08;27(14):145605. doi: 10.1088/0957-4484/27/14/145605. Epub 2016 Feb 26. PMID: 26916977.
Copy Download .nbib Format: NLM
Share it on

Nanotechnology. 2016 Apr 08;27(14):145605. doi: 10.1088/0957-4484/27/14/145605. Epub 2016 Feb 26.

Growth of hybrid carbon nanostructures on iron-decorated ZnO nanorods.

Nanotechnology

Puleng N Mbuyisa, Federica Rigoni, Luigi Sangaletti, Stefano Ponzoni, Stefania Pagliara, Andrea Goldoni, Muzi Ndwandwe, Cinzia Cepek

Affiliations

  1. Department of Physics and Engineering, University of Zululand, Private Bag X1001, Kwadlangezwa 3886, South Africa.

PMID: 26916977 DOI: 10.1088/0957-4484/27/14/145605

Abstract

A novel carbon-based nanostructured material, which includes carbon nanotubes (CNTs), porous carbon, nanostructured ZnO and Fe nanoparticles, has been synthetized using catalytic chemical vapour deposition (CVD) of acetylene on vertically aligned ZnO nanorods (NRs). The deposition of Fe before the CVD process induces the presence of dense CNTs in addition to the variety of nanostructures already observed on the process done on the bare NRs, which range from amorphous graphitic carbon up to nanostructured dendritic carbon films, where the NRs are partially or completely etched. The combination of scanning electron microscopy and in situ photoemission spectroscopy indicate that Fe enhances the ZnO etching, and that the CNT synthesis is favoured by the reduced Fe mobility due to the strong interaction between Fe and the NRs, and to the presence of many defects, formed during the CVD process. Our results demonstrate that the resulting new hybrid shows a higher sensitivity to ammonia gas at ambient conditions (∼60 ppb) than the carbon nanostructures obtained without the aid of Fe, the bare ZnO NRs, or other one-dimensional carbon nanostructures, making this system of potential interest for environmental ammonia monitoring. Finally, in view of the possible application in nanoscale optoelectronics, the photoexcited carrier behaviour in these hybrid systems has been characterized by time-resolved reflectivity measurements.

Publication Types