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Browsing Journal Articles by Cluster "Chemicals"

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Adsorption of NH3 and NO2 molecules on sn-doped and undoped ZnO (101) surfaces using density functional theory

Author: Dima, Ratshilumela S ; Tshwane, David M ; Shingange, Katekani ; Modiba, Rosinah ; Maluta, NE ; Maphanga, Rapela R Date: 2022 The adsorption and interaction mechanisms of gaseous molecules on ZnO surfaces have received considerable attention because of their technological applications in gas sensing. The adsorption behavior of NH3 and NO2 molecules on undoped and ... Read more
Anti-mycobacterial peroxides: A new class of agents for development against tuberculosis

Author: Van der Westhuyzen, Christiaan W ; Haynes, J ; Panayides, Jenny-Lee ; Wiid, I ; Parkinson, C Date: 2020 Background: With few exceptions, existing tuberculosis drugs were developed many years ago and resistance profiles have emerged. This has created a need for new drugs with discrete modes of action. There is evidence that tuberculosis (like ... Read more
Antibiotic 3D printed Materials for healthcare applications

Author: Mokhena, Teboho C ; John, Maya J ; Mochane, MJ ; Sadiku, ER ; Motsoeneng, TS ; Mtibe, Asanda ; Tsipa, PC Date: May 2020 Since its introduction in the past 25 years, three-dimensional (3D) printing has been a major research topic owing to its potential to overcome the limitations of conventional 3D manufacturing techniques, that is, to control the overall ... Read more
Application of electrospun materials in oil–water separations

Author: Mokhena, Teboho C ; John, Maya J ; Mochane, MJ ; Tsipa, PC Date: Apr 2020 There has been ever-increasing pressure to come up with novel strategies for oily wastewater treatment since it affect the available water sources, crop production, aquatic life and human health. Electrospun nanofibrous materials with attractive ... Read more
Assessing a sustainable manufacturing route to lapatinib

Author: Stark, RT ; Rye, DR ; Newton, OJ ; Deadman, BJ ; Miller, PW ; Panayides, Jenny-Lee ; Riley, Darren L ; Helldardt, K ; Hii, KK Date: Aug 2022 A synthetic route to an anti-cancer drug, lapatinib, was devised to support the development of a sustainable manufacturing process in South Africa. Quantitative metrics were employed to evaluate the sustainability of the key steps of the reaction. Read more
Beneficiation of eucalyptus tree barks in the context of an integrated biorefinery – Optimisation of accelerated solvent extraction (ASE) of polyphenolic compounds using response surface methodology

Author: Andrew, Jerome E ; Masetlwa, J ; Tesfaye, T ; Sithole, Bishop B Date: Dec 2020 Bark from trees obtained from sustainably managed plantations used in the production of timber, pulp and paper is an under-utilised waste in many countries across the world. However, in the context of an integrated biorefinery, they may serve ... Read more
Beneficiation of wood sawdust into cellulose nanocrystals for application as a bio-binder in the manufacture of particleboard

Author: Fagbemi, Olajumoke D ; Andrew, Jerome E ; Sithole, Bishop B Date: Oct 2021 This study reports on the beneficiation of wood sawdust into cellulose nanocrystals (CNC) for application as a binder in the manufacture of particleboard. The cellulose nanocrystal from wood sawdust was extracted using acid hydrolysis and an ... Read more
Binding pose analysis of hydroxyethylamine based ß-secretase inhibitors and application thereof to the design and synthesis of novel indeno[1,2-b]indole based inhibitors

Author: Van der Westhuizen, CJ ; Van Greunen, DG ; Cordier, W ; Nell, M ; Steenkamp, V ; Stander, A ; Panayides, Jenny-Lee ; Riley, DL Date: Nov 2020 ß-Secretase (BACE1) is recognised as a target for the treatment of Alzheimer’s disease, and transition-state isosteres such as hydroxyethylamines have shown promise when incorporated into BACE1 inhibitors. A computational investigation of ... Read more
Biodegradable behaviour of waste wool and their recycled polyster preforms in aqueous and soil conditions

Author: Muniyasamy, Sudhakar ; Patnaik, Asis Date: Jan 2021 Present study deals with the biodegradable behavior of individual components and their preforms of nonwoven biocomposites developed from waste wool fibers including coring wool (CW), dorper wool (DW) and recycled polyester fibers (RPET). A ... Read more
Biodegradation of petroleum hydrocarbon waste using consortia of Bacillus sp

Author: Masika, Wendy S ; Moonsamy, Ghaneshree ; Mandree, Prisha ; Ramchuran, Santosh O ; Lalloo, Rajesh ; Kudanga, T Date: Dec 2020 Petroleum hydrocarbons are toxic to all forms of life; therefore, environmental pollution caused by petroleum is of great concern. Bio-based environmentally friendly strategies are preferred for the remediation of these contaminated sites. ... Read more
Biodiesel production potential of an indigenous South African microalga, Acutodesmus bajacalifornicus

Author: Grobler, J ; Harding, KG ; Smit, Monique ; Ramchuran, Santosh O ; Durand, P ; Low, M Date: Sep 2021 In this study, a South African indigenous microalga Acutodesmus bajacalifornicus was evaluated in different cultivation media. Eleven potential cultivation media were identified and tested on A. bajacalifornicus, a potential source for biodiesel ... Read more
Bioelectricity generation by natural microflora of septic tank wastewater (STWW) and biodegradation of persistent petrogenic pollutants by basidiomycetes fungi: An integrated microbial fuel cell system

Author: Thulasinathan, B ; Jayabalan, T ; Sethupathi, M ; Kim, W ; Muniyasamy, Sudhakar ; Sengottuvelan, N ; Nainamohamed, S ; Ponnuchamy, K ; Alagarsamy, A Date: Jan 2021 The microbial fuel cell is a unique advantageous technology for the scientific community with the simultaneous generation of green energy along with bioelectroremediation of persistent hazardous materials. In this work, a novel approach of ... Read more
Bioremediation of polycyclic aromatic hydrocarbons from industry contaminated soil using indigenous bacillus spp.

Author: Mandree, Prisha ; Masika, Wendy S ; Naicker, Justin ; Moonsamy, Ghaneshree ; Ramchuran, Santosh O ; Lalloo, Rajesh Date: Sep 2021 Polycyclic aromatic hydrocarbons (PAHs) are reportedly toxic, ubiquitous and organic compounds that can persist in the environment and are released largely due to the incomplete combustion of fossil fuel. There is a range of microorganisms ... Read more
Cellulose nanocrystals-based composites

Author: Mokhena, Teboho C ; John, Maya J ; Mochane, MJ ; Mtibe, Asanda ; Motsoeneng, TS ; Mokhothu, TH ; Tshifularo, CA Date: Jan 2020 Cellulose nanocrystals and cellulose nanocrystals-based composites with their unique features, such as abundance, renewability, high strength and stiffness, eco-friendliness, and relatively low density received unprecedented interest from ... Read more
Cellulose nanomaterials: New generation materials for solving global issues

Author: Mokhena, Teboho C ; John, Maya J Date: Feb 2020 This review describes the recent advances in the production and application of cellulose nanomaterials. Cellulose nanomaterials (CNMs), especially cellulose nanocrystals and cellulose nanofibers, can be produced using different preparation ... Read more
Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure

Author: Lehutso, Raisibe F ; Tancu, Yolanda ; Maity, Arjun ; Thwala, Melusi Date: Mar 2021 Analytical limitations have constrained the determination of nanopollution character from real-world sources such as nano-enabled products (NEPs), thus hindering the development of environmental safety guidelines for engineered nanomaterials ... Read more
Characterisation of pulp and paper mill sludge for beneficiation

Author: Jele, TB ; Sithole, Bishop B ; Lekha, Prabashni ; Andrew, Jerome E Date: May 2022 In this study, three different pulp and paper mill sludge (PPMS) samples collected from different South African mills were chemically and physically characterised to investigate their suitability for various beneficiation pathways. The overall ... Read more
Co-pelletization of a zirconium-based metalorganic framework (UiO-66) with polymer nanofibers for improved useable capacity in hydrogen storage

Author: Bambalaza, Sonwabo E ; Langmi, HW ; Mokaya, R ; Musyoka, Nicholas M ; Khotseng, LE Date: Dec 2020 We report on a concept of co-pelletization using mechanically robust hydroxylated UiO-66 to develop a metal-organic framework (MOF) monolith that contains 5 wt% electrospun polymer nanofibers, and consists of an architecture with alternating ... Read more
Colour tuning from violet to blue emission stimulated by various nickel oxide nanostructures: Influence of bias voltage towards volatile organic compounds vapours

Author: Mokoena, Teboho P ; Swart, HC ; Hillie, Kenneth T ; Motaung, DE Date: Mar 2021 Propanol and benzene, toluene, ethylenebenzene and xylene (BTEX) vapours are within the volatile organic compounds (VOCs) family and are utilized in industrial and petroleum goods, are greatly toxic in human health and environment. Therefore, ... Read more
Comparative study of graphene-polypyrrole and borophene-polypyrrole composites: Molecular dynamics modeling approach

Author: Folorunso, Oladipo ; Hamam, Y ; Sadiku, R ; Ray, Suprakas S ; Adekoya, GJ Date: 2021 In the search for the solution to energy storage problems, this study investigates the interfacial energy interaction and temperature stability of the composites made of polypyrrole-graphene-borophene (PPy-Gr-Bon) by using molecular dynamics ... Read more

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