G
Gugu H. Mhlongo
Researcher at University of the Free State
Publications - 54
Citations - 1756
Gugu H. Mhlongo is an academic researcher from University of the Free State. The author has contributed to research in topics: Photoluminescence & Scanning electron microscope. The author has an hindex of 22, co-authored 49 publications receiving 1305 citations. Previous affiliations of Gugu H. Mhlongo include Council for Scientific and Industrial Research & Council of Scientific and Industrial Research.
Papers
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Journal ArticleDOI
Ultra-high sensitive and selective H 2 gas sensor manifested by interface of n–n heterostructure of CeO 2 -SnO 2 nanoparticles
David E. Motaung,David E. Motaung,Gugu H. Mhlongo,Gugu H. Mhlongo,Peter R. Makgwane,Baban P. Dhonge,Franscious Cummings,Hendrik C. Swart,Suprakas Sinha Ray,Suprakas Sinha Ray +9 more
TL;DR: In this paper, the authors reported on the ultra-high sensitive and selective hydrogen gas sensing using CeO2-SnO2 mixed oxide heterostructure synthesized by a simple hydrothermal method.
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Shape-selective dependence of room temperature ferromagnetism induced by hierarchical ZnO nanostructures.
David E. Motaung,Gugu H. Mhlongo,S.S. Nkosi,Gerald F. Malgas,Bonex W. Mwakikunga,Elizabeth Coetsee,Hendrik C. Swart,H. M. I. Abdallah,Thomas Moyo,Suprakas Sinha Ray +9 more
TL;DR: Structural analyses showed that the ZnO nanostructures are polycrystalline and wurtzite in structure, without any secondary phases, and an intense structure- and shape-dependent ferromagnetic signal with an effective g-value of >2.0 and a sextet hyperfine structure was shown.
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Room temperature ferromagnetism and gas sensing in ZnO nanostructures: Influence of intrinsic defects and Mn, Co, Cu doping
Gugu H. Mhlongo,Katekani Shingange,Zamaswazi P. Tshabalala,Baban P. Dhonge,F. A. Mahmoud,Bonex W. Mwakikunga,David E. Motaung +6 more
TL;DR: In this paper, a combination of defect structure analysis based on photoluminescence (PL) and electron paramagnetic resonance (EPR) was employed to detect coexisting oxygen vacancies (V O ) and zinc interstitials (Zn i ) defects in undoped and transition metal doped ZnO systems.
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Highly selective NH3 gas sensor based on Au loaded ZnO nanostructures prepared using microwave-assisted method.
Katekani Shingange,Zamaswazi P. Tshabalala,Odireleng M. Ntwaeaborwa,David E. Motaung,Gugu H. Mhlongo +4 more
TL;DR: It was confirmed that Au form nanoparticles loaded on the surface of ZnO, and it was demonstrated that Au/ZnO based sensors were highly selective to NH3 gas at room temperature.
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Temperature-dependence on the structural, optical, and paramagnetic properties of ZnO nanostructures
Gugu H. Mhlongo,David E. Motaung,S.S. Nkosi,H.C. Swart,Gerald F. Malgas,K.T. Hillie,K.T. Hillie,Bonex W. Mwakikunga +7 more
TL;DR: In this article, the violet-blue emitting ZnO nanostructures were synthesized by a microwave-assisted hydrothermal method followed by post-synthesis annealing at different temperatures.