College of Science, Engineering and Technology: Recent submissions

Now showing items 81-100 of 1998

Interfacial electron redistribution in 2D/3D MoS2/CuBi2O4 p-n heterojunction for visible light assisted reduction of Cr(VI) and oxidation of antibiotics

Olatunde, Olalekan C.; Yusuff, Tunde; Mabuba, Nonhlangabezo; Onwudiwe, Damian; Makgato, Seshibe (Elsevier, 2024-03-01)

We report the successful design of a heterojunction comprising p-type CuBi2O4 (CBO) and n-type MoS2 semiconductors. This was achieved through a hydrothermal and calcination method, resulting in the uniform deposition of ...
An animation-based teaching and learning framework for struggling introductory programming students

Ramabu, Tlou James (2023-08)

Introductory programming can be challenging for educators to teach and students to learn. Some students struggle to comprehend introductory programming topics like the uses of assignment, decisions, loops, functions and ...
Ab initio molecular orbital theoretical studies of the molecular complexes of boron trifluoride and oxygen electron donor ligands

Modau, Eric (2021-10)

The optimized geometrical structures, the interaction energies, the basis set superposition errors (BSSEs) and the infrared spectra of the monomers, homodimers and the molecular complexes formed between BF3 and a number of ...
Photocatalytic degradation of methyl orange using CuO/Al2O3 nanocomposite obtained by microwave-assisted thermal decomposition route

Alhussain, Hanan (Elsevier, 2024-03-07)

Aluminum oxide (Al2O3) and copper oxide (CuO) are known to exhibit very exceptional properties including high thermal and chemical properties that promise a wide area of applications. In this paper, we report the ...
Novel Kuhn-Tucker conditions for vibration analysis in a functionally graded porous beam using the R-program

Geetha, Narayanan; Vivekanandam, Balasubramaniam; Pappula, Bridjesh; Makgato, Seshibe (Elsevier, 2024-03-29)

Functionally graded materials provide a flexible and individualized strategy for material design, allowing for optimization of properties and performance for particular purposes. The investigation considers the effects of ...
The effects of gradient index, aspect ratio, porosity, and boundary conditions on the buckling behavior of functionally graded porous beams: A k-out-of-n system reliability analysis

Chintalapudi, Ravikiran; Kannaiyan, Geetha; Pappula, Bridjesh; Makgato, Seshibe (Elsevier, 2024-04-02)

Functionally graded materials are a class of multifunctional materials that exhibit spatial variation in composition and microstructure. This deliberate variation is designed to effectively manage and manipulate changes ...
Application of chlorine dioxide as an alternative pre-oxidant in the treatment of eutrophic raw water

Strydom, Willem Frederick (2017-10)

The Vaalkop water treatment works (WTW) abstracts water from the Vaalkop Dam, which is situated in the Crocodile West/Marico Water Management Area of South Africa. The bulk of the inflow into the dam is through a canal fed ...
An investigation into the biodegradability of natural organic matter (NOM) and the resulting potential of biodegradable NOM fractions to form disinfection by-products

Sambo, Sifiso Penuel (2020-02)

Not only does the presence of excessive levels of natural organic matter (NOM) in surface waters affect the raw water quality, but it also impacts the water treatment and supply processes. Other notable challenges caused ...
The removal of dissolved organic matter (DOM) from water using photocatalysis coupled with coagulation

Moss, Lerato (2024)

Dissolved organic matter (DOM) comprises of both synthetic and natural organic compounds such as pharmaceuticals, pesticides, natural organic matter (NOM), found in the environment. Most of the DOM pollute drinking water ...
A three step approach to the degradation of natural organic matter (NOM) from water sources

Ndlangamandla, Nqobile Gugulethu (2017-06)

Natural Organic Matter (NOM) is a complex blend of organic compounds that forms naturally via the degradation of plant and animal materials into water sources. NOM in water negatively affects water quality (by causing odor, ...
Synthesis and characterization of hybrid iod exchange resins embedded with hydrous ferric oxide nanoparticles for the removal of metal ions from acid mine drainage

Sodzidzi, Zizikazi (2020-10)

Acid mine drainage (AMD) is a serious water pollutant that contaminates freshwater sources such as rivers, lakes, ground water and even sediments with heavy metals which include Cr(VI), Cd(II) and Pb(II). In this study a ...
Open government alignment for effective e-participation

Gegana, Siyabulela (2023-09-12)

The introduction of electronic-participation initiatives in a form of involving community in various countries yielded positive results as compared to traditional mechanisms; more people are engaging government departments ...
Developing a framework for the classification of strategic and critical minerals in South Africa

Pule, Dikgwatlhe Israel (2022-12)

Minerals should be sufficient to sustain security of the nation as well as growth of the economy and employment. Countries without minerals may source minerals from mineral-rich countries. South Africa is endowed with ...
Developing a framework for the classification of strategic and critical minerals in South Africa

Dikgwatlhe, Israel Pule (2022-12)

Minerals should be sufficient to sustain security of the nation as well as growth of the economy and employment. Countries without minerals may source minerals from mineral-rich countries. South Africa is endowed with ...
A model for information security culture with creativity and innovation as enablers – refined with an expert panel

Da Veiga, Adele (Emerald, 2023-02-01)

information security culture. A model is proposed to encourage creativity and innovation as part of the information security culture. Design/methodology/approach – The study first applied a theoretical approach with a ...
An information security framework for reducing information security costs and sustaining information security culture

Govender, Sunthoshan G. (2023-06-13)

As the velocity and volume of data breaches increases, information security is a cornerstone to the sustainability of business functionality in organisations. The focus of traditional information security has been to ...
Fabrication and chararcterization of spectrally selective solar absorber copper oxide (CuO) nanocoatings for photothermal application

Welegers, Giday Gebregziabher (2022-11)

Solar-to-thermal energy is considered to be the most direct way of converting solar radiation into usable forms of energy for a wide range of applications, including seawater desalination, heating water, photocatalysis, ...
Metal supported on carbon based materials for adsorptive desulphurisation of fuels

Mguni, Liberty Lungisani (2021-09-19)

The transport industry is one of the biggest contributors to air pollution, with the major air pollutants being COx, NOx, and SOx. SOx is produced by the combustion of the organic sulphur compound found in fuels, e.g. ...
Characterization and properties of sulfonated chitosan membrane for direct methanol fuel cell

Modau, Livhuwani Elsie (2023-04-11)

This dissertation examines the structure and properties of chitosan membranes regarding their applicability in fuel cells. The objective of this work is to synthesize a polymer membrane with improved properties such as ...
Rear-earth ions doped mesoporous TiO2 nanostructures and the caffeine booster in MAPbl3 perovskite material

Tsotetsi, Dieketseng Glara (2023-05)

Titanium dioxide (TiO2) nanostructures were synthesized by sol-gel method and co polymers polyethylene glycol (PEG), polyvinylpyrrolidone (PVP) and pluronic F127 were used as pore forming agents. The samples were then ...

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