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Browsing Research Publications/Outputs by Subject "Zinc oxide"

Now showing items 1-15 of 15

Annealing effect of hybrid solar cells based on poly (3-hexylthiophene) and zinc-oxide nanostructures

Author: Motaung, DE ; Malgas, GF ; Ray, SS ; Arendse, CJ Date: Jun 2013 The structural growth and optical and photovoltaic properties of the organic–inorganic hybrid structures of zinc oxide (ZnO)-nanorods/poly-3-hexylthiophene (P3HT) and two variations of organic polymer blends of ZnO/P3HT:C(sub60) fullerene and ... Read more
Consolidation of titanium hydride powders during the production of titanium PM parts: The effect of die wall lubricants

Author: Machio, Christopher N ; Machaka, Ronald ; Chikwanda, HK Date: Nov 2015 The effects of die wall lubricants on the cold compaction of titanium hydride powder are studied. Three commonly-used die wall powder metallurgy lubricants – zinc stearate, Acrawax® C dispersion and Mirror Glaze® – are compared. The influence ... Read more
Engineered inorganic nanoparticles and cosmetics: Facts, issues, knowledge gaps and challenges

Author: Wiechers, JW ; Musee, N Date: Oct 2010 The cosmetic industry is among the first adaptors of nanotechnology through the use of engineered nanoparticles (ENPs) to enhance the performance of their products and meet the customers’ needs. Recently, there have been increasing concerns ... Read more
Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods

Author: Mavundla, SE ; Malgas, GF ; Motaung, DE ; Iwuoha, EI Date: Apr 2012 Flower-shaped zinc oxide (ZnO) structures have been synthesized in a microwave at 180 C for 20 minutes using zinc nitrate and KOH. Detailed structural and morphology observation showed that the micron-sized ZnO nano-pencils grow out of the ... Read more
Fate and behaviour of ZnO engineered nanoparticles in a simulated domestic wastewater treatment plant

Author: Chaúquea, EFC ; Zvimba, JN ; Ngila, JC ; Musee, N Date: Aug 2013 Wastewater treatment plants (WWTPs) employ activated sludge processes to treat domestic wastewater using a consortium of bacteria essentially to degrade organic matter. However, bacteria activity is inhibited by toxic substances; thus, ... Read more
The interactive influence of water chemistry and nanoparticle characteristics in determining the environmental fate of metal-based nanoparticles: a case of nAg and nZnO

Author: Thwala, Melusi ; Radebe, N ; Tancu, Y ; Musee, N Date: Sep 2014 This study investigated the stability of nAg (40-60 nm) and nZnO (10-130 nm) NPs in Hoagland's Medium of half (50HM) and full (100HM) strengths as representative of complex water. The hydrodynamic size dynamics were studied using the Transmission ... Read more
Investigation of physicochemical properties of Ag doped ZnO nanoparticles prepared by chemical route

Author: Gayathri, S ; Ghosh, OSN ; Sathishkumar, S ; Sudhakara, S ; Jayaramudu, J ; Ray, SS ; Viswanath, AK Date: Dec 2015 In this report we have demonstrated the synthesis of silver doped and pure ZnO nanoparticles using facile chemical precipitation method. The crystal structure, optical and magnetic properties of the synthesized nanocrystals were determined ... Read more
Kinetic models for the release of the anticancer drug doxorubicin from biodegradable polylactide/metal oxide-based hybrids

Author: Mhlanga, N ; Ray, SS Date: Jan 2015 For decades, studies on drug-release kinetics have been an important topic in the field of drug delivery because they provide important insights into the mechanism of drug release from carriers. In this work, polylactide (PLA), doxorubicin ... Read more
Microstructural and photoluminescence properties of sol–gel derived Tb3+ doped ZnO nanocrystals

Author: Kabongo, GL ; Mhlongo, Gugu H ; Malwela, T ; Mothudi, BM ; Hillie, KT ; Dhlamini, MS Date: Apr 2014 Un-doped and Tb(Sup3+) doped ZnO nanocrystals with different concentrations of Tb(Sup3+) were synthesized by a sol–gel method and their photoluminescence (PL) properties were investigated. The successful incorporation of Tb(sup3+) ions with ... Read more
Optical constants correlated electrons-spin of micro doughnuts of Mn-doped ZnO films

Author: Nkosi, SS ; Kortidis, I ; Motaung, DE ; Keartland, J ; Sideras-Haddad, E ; Forbes, A ; Mwakikunga, Bonex W ; Kiriakidis, G ; Ray, Suprakas S Date: Sep 2013 Diluted magnetic semiconductor (DMS) Mn:ZnO thin films with “ring-like or doughnut-like” structures were grown using aerosol spray pyrolysis for 20 and 30 min. Electron paramagnetic resonance revealed the ferromagnetic ordering which varies ... Read more
Optical selection rules and scattering processes in rocksalt wide band gap ZnO

Author: Kunert, HW ; Govender, M ; Machatine, AGJ ; Mwakikunga, Bonex W ; Niyongabo, P Date: Feb 2014 At sufficiently high pressures, wurtzite structure zinc oxide (W-ZnO) can be transformed to the cubic rocksalt (R-ZnO) structure. The R-ZnO exhibits semiconductor behavior with an indirect wide band gap of inline image. The maximum valence ... Read more
Orientation-dependent low field magnetic anomalies and room-temperature spintronic material – Mn doped ZnO films by aerosol spray pyrolysis

Author: Nkosi, SS ; Kortidis, I ; Motaung, DE ; Malgas, GF ; Keartland, J ; Sideras-Haddad, E ; Forbes, A ; Mwakikunga, Bonex W ; Ray, Suprakas S ; Kiriakidis, G Date: Dec 2013 High quality un-doped and Mn-doped ZnO films deposited by a simple aerosol spray pyrolysis technique for 20 and 30 min were studied using electron paramagnetic resonance (EPR), X-ray diffraction (XRD) and atomic force microscopy (AFM) techniques. ... Read more
A review on ZnO nanostructured materials: Energy, environmental and biological applications

Author: Theerthagiri, J ; Salla, S ; Senthil, RA ; Palaniyandy, Nithyadharseni ; Madankumar, A ; Arunachalam, P ; Maiyalagan, T ; Kim, H Date: Jul 2019 Zinc oxide (ZnO) is an adaptable material that has distinctive properties, such as high-sensitivity, large specific area, non-toxicity, good compatibility and a high isoelectric point, which favours it to be considered with a few exceptions. ... Read more
Synthesis of flower-like zinc oxide and polyaniline with worm-like morphology and their applications in hybrid solar cells

Author: Mavundla, SE ; Malgas, GF ; Motaung, DE ; Iwuoha, EI Date: May 2012 ZnO with a “flower-like” morphology was synthesized using a simple microwave assisted hydrothermal method and used as an acceptor material in hybrid solar cells. X-Ray diffraction and Raman Spectroscopy confirmed the formation of a highly ... Read more
Visible light-excitable ZnO/2D graphitic-C3N4 heterostructure for the photodegradation of naphthalene

Author: Mukwevho, N ; Kumar, Neeraj ; Fosso-Kankeu, E ; Waanders, F ; Bunt, J ; Ray, Suprakas S Date: Sep 2019 In this study, ZnO/g-C(sub3)N(sub4) heterostructure was synthesized with enhanced photodegradation potential for polycyclic aromatic hydrocarbons (PAHs) (viz. naphthalene) in water using visible light. The as-prepared catalysts were characterized ... Read more

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