Frank Agyemang

Frank Agyemang
Kwame Nkrumah University of Science and Technology | KNUST · Department of Material Engineering

PhD

About

52
Publications
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511
Citations

Publications

Publications (52)
Article
This study synthesises expanded graphite (EG) from graphitised carbon from waste polyethylene terephthalate (PET) bottles. The adsorbent material was characterised using FTIR, XRF, XRD, SEM, Raman Spectroscopy, and BET surface area analysis. The synthesised EG defluorinated wastewater, utilising response surface methodology (RSM) for experimental d...
Preprint
Full-text available
Activities associated with illegal mining “galamsey’’ often result in significant environmental degradation, particularly to water bodies. In the case of River Oda, like all other affected areas in Ghana, galamsey operations contribute to the pollution of the water body with some heavy metals such as mercury ( Hg ), cadmium ( Cd ) and arsenic ( As...
Article
Full-text available
This study compares the corrosion behaviour of a copper plate current collector subjected to an ex-situ cyclic stability test in a 6 M KOH and a 6 M Na 2 SO 4 electrolyte solution for an electrochemical supercapacitor cell. Through experimental analysis, the change in microstructures resulting from the corrosion behaviour of the copper plate curren...
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Biomass and biowaste resources can be used to create self‐doped carbon with a distinctive microstructure. Using an economical and environmentally friendly method to create heteroatom‐doped carbon electrode materials with excellent electrochemical performance has attracted much attention in the energy storage industry. A novel facile two‐step, low‐c...
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This comprehensive review explores the remarkable progress and prospects of diatomaceous earth (DE) as a bio-template material for synthesizing electrode materials tailored explicitly for supercapacitor and battery applications. The unique structures within DE, including its mesoporous nature and high surface area, have positioned it as a pivotal m...
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Carbon black, a nano-porous material usually derived from the pyrolysis of waste tyres possesses varied particle sizes and morphology making it a viable material for several engineering applications. However, the...
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Globally, the demand for materials with high ultrafast charge rates yet slow discharge continues to rise which has resulted in extensive research into supercapacitors. Although the current supercapacitors can meet such demands, the high processing cost coupled with the use of toxic chemicals remains a major concern. In this study, porous graphene o...
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Contamination of the environmental receptors with heavy metals due to mining is a major topical environmental issue in Ghana. This research investigates the possible ecological and human health risks of heavy metal impacts due to mining in the Amansie West District in Ghana. A total of 18 soil samples were taken from the Bontesso illegal mining sit...
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Recent studies have focused on the processing of biowaste to obtain added value and to reduce organic waste in the general stream. This study investigated the synthesis of magnesium oxide (MgO) from magnesium-rich Cucurbita pepo (pumpkin) seeds for a precursor solution as a reducing agent via an eco-friendly method for the first time. The pumpkin s...
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Fluoride is recognized as a vital ion for human and animal growth because of the critical role it plays in preventing skeletal and dental problems. However, when it is ingested at a higher concentration it can cause demineralization of teeth and bones resulting in fluorosis, therefore, the production of high-adsorptive capacity material which is al...
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Remedial action for heavy metal-contaminated soils is imperative for preventing heavy metal leachability and minimizing environmental risks. This study evaluated the use of limekiln dust (LKD) as a heavy metal stabilization agent for Ghanaian gold mine oxide ore tailing material. Heavy metal-laden tailing material (Fe, Ni, Cu, Cd, and Hg) was colle...
Preprint
Full-text available
Fluoride is recognized as a vital ion for human and animal growth because of the critical role it plays in preventing skeletal and dental problems. However, when it is ingested at a higher concentration it can cause demineralization of teeth and bones resulting in fluorosis, therefore, the production of high-adsorptive capacity material which is al...
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Full-text available
Improper discharge of cassava mill effluent (CME) has attracted much attention in major cassava-producing areas due to cyanide contamination. This study conducted a target survey on inhabitants and processors of the Akrofrom-Techiman cassava processing area in Ghana that aimed to assess their knowledge and perception of cyanide contamination from t...
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A new, sizable family of 2D transition metal carbonitrides, carbides, and nitrides known as MXenes has attracted a lot of attention in recent years. This is because MXenes exhibit a variety of intriguing physical, chemical, mechanical, and electrochemical characteristics that are closely linked to the wide variety of their surface terminations and...
Article
Spent pot lining (SPL) is a hazardous by-product obtained during the decomposition of carbon cathodes in the electrolytic cells used in aluminium smelting. The carbon cathode lining materials degrade over time thereby affecting the performance of the electrolytic cell. Fluoride contents of up to 20 wt.% and cyanides up to 1 wt.% have been reported...
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The release of harmful particles from industries is one of the important sources of environmental pollution worldwide. The goal of this study was to determine the amounts of dust deposition and heavy metal pollution in the soils surrounding a cement mill in Konongo, Ghana. Topsoils (0-10 cm) were sampled at the four geographical axes of the factory...
Article
The development of low-cost, high-efficiency electrode materials for supercapacitors is motivated by the growing need for green and affordable clean energy (SDG goal 7). Developing new energy conversion and storage technologies, such as supercapacitors, batteries, and fuel cells, is a viable option for meeting energy demands while addressing enviro...
Article
The use of flat panel displays has permeated daily life since the breakthrough in the usage of liquid crystals (LCs) in display technology. However, the presence of chemical compositions such us cyano-groups, benzene, fluorine, cyclohexyl, etc., in LCs has potential adverse effects on humans and their environment as well. The environmental issue ca...
Article
This work employs a non-corrosive and non-toxic molten salt combination of NaCl and KCl as an activation agent in an air environment to synthesize nitrogen-doped hierarchical porous carbon from plantain peels at 800 °C for supercapacitor application. Due to the synergistic effect of nitrogen doping, the synthesized nitrogen-doped activated unripe p...
Article
The increase in the world population has resulted in an increase in vehicle production by most automobile companies. It is expected that vehicle production will increase from 1.2 billion to 2 billion by 2035. Thus, automobile industries produce approximately 1.5 billion tyres annually, which gradually turn into waste products. Recycling waste tyres...
Article
The levels of heavy metals pollution in water and soil around landfill sites are increasing due to the indiscriminate dumping of domestic and industrial wastes at these sites. This research was conducted to study the characterisation and stabilisation of heavy metals in soils and leachate at the Dompoase landfill site, Kumasi-Ghana. Nine surface co...
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The growing need to preserve our natural resources and protect the environment has resulted in a continuous effort to develop clean, renewable, and sustainable materials for energy storage and conversion. Supercapacitors (SCs) are electrochemical storage devices that have attracted the attention of the scientific community owing to their high power...
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Activities of illegal small-scale miners promote continual introduction of wide pollutants into the Aboabo stream. Their toxicity poses health threats to the inhabitants of Krapoo village in the Ahafo Region, Ghana. The study assesses the impacts of illegal small-scale mining activities on the water quality of the stream. Levels of physico-chemical...
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Kaolin from Teleku Bokazo, a town in the Ellembele district of the Western Region in Ghana was used to synthesize zeolite by hydrothermal process and further modified with aluminium sulphate (alum). The kaolin and zeolite samples were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffract...
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The regular bursting of PVC pipes exposed by land erosion has been a great worry to consumers and water distribution companies. This work therefore, focuses on the use of multi-objective decision-making approach to choose alternative material that is non-toxic, corrosion resistant, cheap, UV radiations resistant and tough. Initial screening of the...
Article
The world is advancing quickly in terms of population and technology and this has placed a high demand on energy. The exploitation of conventional sources of energy such as fossil fuel, has proven to be harmful to the environment and its biota. Consequently, there is a need to exploit clean, renewable and sustainable sources of energy like the sun....
Article
Polyvinyl pyrrolidone supported ZnCo2O4 and NiCo2O4 nanoparticles with 3D nanocactus and nanoflower-like morphology, respectively, directly grown on the surface of nickel foam through a one-step hydrothermal process followed by calcination treatment were used as improved electrocatalyst for oxygen evolution reaction. This study is continuation of o...
Article
The carbon nanofiber-carbon nanotube (CNF-CNT) composites were fabricated by simple electrospinning and carbonization of polyacrylonitrile (PAN)-CNT solution prepared by first sonicating and stirring the CNT in N, N-dimethylformamide (DMF) as solvent. Aniline monomer was then coated on the composite materials via in situ chemical polymerization to...
Article
Poly(vinylidene fluoride) (PVDF) nanofibers were fabricated by combined electrospinning and selective removal of poly(ethylene oxide) PEO from a PVDF/(PEO)/water (H2O) composite. The method involved varying the concentration of PEO and H2O with respect to PVDF and N,N-dimethylformamide (DMF) respectively. The morphology and other properties of the...
Article
Electro-spun fabricated TiO2 nanofibers were prepared by simple electro-spinning method, in subsequent step silver (Ag) was deposited using precipitation method and obtained Ag-TiO2 composite nanofibers. The properties and morphology of these prepared composite nanofibers were characterized by XRD, SEM, EDX, and TGA. The prepared electro-spun compo...
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The present study involves the fabrication of tungsten trioxide (WO3) nanofibers by an electrospinning technique using polyvinyl pyrrolidone (PVP)/citric acid/tungstic acid as precursor solution. It was found that the PVP concentration was one of the most crucial processing parameters determining the final properties of WO3 nanofibers. The optimum...
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Tricalcium phosphate is the most commonly used biomaterial because of its good biocompatibility. However, its poor mechanical strength under complex stress and powder-like appearance hinder its application. The use of a composite biomaterial which maintains a fine balance between excellent mechanical properties and biocompatibility can be a solutio...

Questions

Question (1)
Question
I want to test my carbon-based material in H2SO4 and I want to know if ITO is stable in H2SO4 or any alternative substrate which is stable in H2SO4.

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