Simiso Dube
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Development and Optimization of a Dispersive Liquid–Liquid Microextraction Method for the Simultaneous Determination of Multiclass Pesticides in Environmental Waters Open
The widespread use of pesticides in modern agriculture necessitates sensitive and sustainable methods to monitor their residues in environmental waters. This study reports the development and optimization of a dispersive liquid–liquid micr…
Innovations in Wild Silk Processing and Applications: A Comparative Review of African and Other Wild Silks Open
Silkworm silk is categorized into mulberry and non-mulberry, corresponding to domesticated and wild silk, respectively. Mulberry silk of domesticated Bombyx mori silk moth has been extensively explored and used in textiles and biomedical a…
Eco-friendly synthesis of hierarchical hollow Cu₇S₄ nanotubelets using volatile organosulfurs for high-performance supercapacitors Open
Herein, a novel and solvent free green chemistry approach has been investigated for synthesis of 1D hollow Cu 7 S 4 nanotubelets on Cu-substrate using volatile organosulfurs of Allium sativum L at room temperature for supercapacitors. In a…
Plasmonic Silver (Ag) Supported Mesoporous CuO Nanocomposites for Photodegradation of Methylene Blue in Water Open
Water decontamination remains a challenge in many developing and developed countries. And thus, efficient and affordable approaches are urgently needed. In this research work, a heterogeneous photocatalyst of Ag@CuO nanocomposites (NCs) ha…
Optimization of the ionic liquid-based dispersive liquid–liquid microextraction combined with high-performance liquid chromatography coupled with diode array detection for the determination of multiclass pesticide residues in water samples Open
An expeditious and effective analytical methodology, predicated on ionic liquid-based dispersive liquid–liquid microextraction (IL-DLLME) integrated with high-performance liquid chromatography coupled with diode array detection (HPLC-DAD),…
Multiclass Determination of 87 Mixed Veterinary Drugs, Pesticides and Mycotoxin Residues in Beef Muscle Samples by Ionic Liquid-Based Dispersive Liquid–Liquid Microextraction and Liquid Chromatography Tandem Mass Spectrometry Open
A miniaturised, eco-friendly and efficient multiclass method for the simultaneous determination of 87 veterinary drugs, pesticides and mycotoxin residues in beef muscle samples by ionic liquid-based dispersive liquid–liquid microextraction…
Ball-milled synthesis of biochar-MOF nanocomposite for the concurrent recovery of mixed contaminants from wastewater Open
In this study, a biochar-metal–organic framework (MOF) nanocomposite was synthesized via ball milling to enable the simultaneous extraction of multiple contaminants from wastewater. The Brunauer-Emmett-Teller (BET) analysis revealed a sign…
Method Development and Optimization of Liquid-Liquid Microextraction Based on the Decomposition of Deep Eutectic Solvent for the Determination of Chromium (VI) in Spinach: Assessment of the Greenness Profile Using Eco-scale, AGREE, and AGREEprep Open
A simple, effective, and ligandless liquid-liquid microextraction (LLME) procedure based on the decomposition of hydrophobic deep eutectic solvents (HDES) was developed for the separation and pre-concentration of chromium (VI) ions in spin…
Facile solvent-free modified biochar for removal of mixed steroid hormones and heavy metals: isotherm and kinetic studies Open
Water contamination has become a global challenge to human survival. Non-biodegradable heavy metal cations and steroid hormones could accumulate in the human body and could result in serious health problems. In this study, we prepared bioc…
Green Synthesis of Surface Modified Biochar for Simultaneous Removal of Steroidal Hormones and Heavy Metals from Wastewater: Optimisation by Central Composite Design Open
The modification of pristine biochar derived from the waste of sweet prickly pear using the green modification method to produce nano-sized biochar (nanobiochar) for the removal of steroidal hormones and heavy metals from water and wastewa…
Ionic <span>liquid‐based</span> dispersive <span>liquid–liquid</span> microextraction of anthelmintic drug residues in <span>small‐stock</span> meat followed by <span>LC‐ESI‐MS</span>/<span>MS</span> detection Open
An ionic liquid‐based dispersive liquid–liquid microextraction (IL‐DLLME) of 20 anthelmintic drugs followed and detected by liquid chromatography–tandem mass spectrometry (LC–MS/MS) has been developed, optimized, and validated. The paramet…
Simultaneous Determination of Multiple Contaminants in Chicken Liver Using Dispersive Liquid-Liquid Microextraction (DLLME) Detected by LC-HRMS/MS Open
Simultaneous determination of a mixture of food contaminants, including pesticides, sulphonamides, fluoroquinolones, anthelmintics, and aflatoxin B1, in solid biological samples (chicken liver) by dispersive liquid-liquid microextraction/l…
Room Temperature Surface Bio-Sulfurisation via Natural Sativum Annilin and Bioengineering of Nanostructured CuS/Cu 2S Open
In this contribution, we report, for the first time, on the surface bio-sulfurisation of metallic surfaces at room temperature via natural sativum annilin . More precisely, this bio-sulfurisation is validated on bioengineered nanostructure…
Dispersive Liquid - Liquid Microextraction for the Determination of Sulfonamide Residues in Egg Samples Open
A dispersive liquid-liquid microextraction combined with high-performance liquid chromatography-diode array detection was developed for the extraction and determination of 15 sulfonamide residues in the egg matrix. The effects of various p…
Single-Layered Biosynthesized Copper Oxide (CuO) Nanocoatings as Solar-Selective Absorber Open
Herein, spectrally selective single-layered CuO nanocoatings were successfully demonstrated via green synthesis and deposited on stainless steel (SS) substrates using a spin coater at 700, 800, 900, and 1000 rpm. The morphological, structu…
Green synthesis of single layered SS/CuO nanocoatings as solar selective absorber: Morphological, Structural and optical properties Open
Herein, spectrally selective single-layered CuO nanocoatings were successfully demonstrated via green synthesis, and deposited on stainless steel (SS) substrates using spin-coater at 700, 800, 900 and 1000 rpm. The morphological surface, s…
Evaluating the Performance of Ball-Milled Silk Fibroin Films for Simultaneous Adsorption of Eight Pharmaceuticals from Water Open
Pollutants mainly exist as multicomponent mixtures in the environment. Therefore, it is necessary to synthesize low-cost adsorbents that can simultaneously adsorb multiple compounds. This work presents the prospect of the adsorption of mul…
Dispersive Liquid - Liquid Microextraction for the Determination of Sulfonamide Residues i n Egg Samples Open
A dispersive liquid-liquid microextraction combined with high-performance liquid chromatography-diode array detection was developed for the extraction and determination of 15 sulfonamide residues in the egg matrix. The effects of various p…
Fabrication of electrospun Mondia whitei/PVA nanofibres: application in the removal of acidic drugs Open
Novel electrospun Mondia whitei/PVA blend nanofibres were fabricated for potential water treatment applications by blending a natural polymer extracted from Mondia whitei (MW) roots with poly (vinyl alcohol) (PVA). The fabricated nanofibre…
Hollow Fibre-Supported Liquid Membrane for the Determination of Sulfonamide Residues in Egg Samples Open
In this study, a three-phase hollow fibre-supported liquid membrane (HF-SLM) technique incorporated with high-performance liquid chromatography (HPLC) coupled with diode array detection (DAD) was developed for the extraction, clean-up, and…
Fabrication and Characterization of Sericin-PVA Composite Films from <i>Gonometa postica</i>, <i>Gonometa rufobrunnea</i>, and <i>Argema mimosae</i>: Potentially Applicable in Biomaterials Open
This study deals with the fabrication and characterization of sericin-poly(vinyl alcohol) (PVA) composite films from three southern African silkworm cocoons. The sericin-PVA films were achieved by chemically cross-linking poly(vinyl alcoho…
Optimization of an Ultra-Sonication Extraction Method for Major Compounds Found in Mondia whitei Using Design of Experiment Open
Optimum extraction conditions are vital in quality control methods to enable accurate quantification of the compounds of interest. An ultra-sonication method was developed for the extraction of seven major compounds found in Mondia whitei.…
Greener Surfactant-Assisted Microextraction Method for the Determination of Fluoroquinolones in Chicken Livers by High-Performance Liquid Chromatography Open
A simple and environmentally friendly surfactant-assisted microextraction method combined with high-performance liquid chromatography fluorescence detection was developed for the determination of six fluoroquinolones in chicken livers. In …
Development of a Quantitative Method for Analysis of Compounds Found in Mondia whitei Using HPLC-DAD Open
Mondia whitei is one of the popular medicinal plants in Africa, which has been used extensively across the continent to cure various ailments. Products prepared from this plant are distributed commercially. In this study, an HPLC-DAD metho…
Multiclass Pesticide Residue Analysis in Fruit and Vegetable Samples by Combining Acetone-Based Salting-Out Assisted Extraction with Dispersive Liquid-Liquid Microextraction Open
Isolation and enrichment of multiclass pesticides’ residue, namely, fungicides (benalaxyl), herbicides (atrazine), carbamate insecticides (carbofuran), organophosphate insecticides (chlorpyrifos), organochlorine insecticides (4,4′-DDT), an…