Browsing Research Articles (Chemistry) by Title
Now showing items 27-46 of 246
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Biosynthesis of silver nanoparticles using bitter leave (Veronica amygdalina) for antibacterial activities
(ScienceDirect, 2019)A green and facile biosynthesis of silver nanoparticles (SNPs) using dry Bitter leaves (DBL) (Vernonia amygdalina) aqueous extract as a capping and reducing agent was demonstrated in this work. The effect of the precursor's ... -
Bis(ferrocenylimine)palladium(II) and platinum(II) complexes: synthesis, molecular structures and evaluation as antitumor agents
(Elsevier, 2012)Compounds (ferrocenyl-2-furylmethyl)imine (L1), (ferrocenyl-2-thiophenemethyl)imine (L2) and (ferrocenyl-2-thiopheneethyl)imine (L3) were synthesized by condensation reactions and obtained in very good yields. Reactions ... -
Bode phase angle signaling of a TB disease biomarker
(Multidisciplinary Digital Publishing Institute (MDPI), 2023)Tuberculosis (TB) is a worldwide burden whose total control and eradication remains a challenge due to factors including false positive/negative diagnoses associated with the poor sensitivity of the current diagnostics in ... -
Boosting LiMn2O4 diffusion coefficients and stability via Fe/Mg doping and MWCNT synergistically modulating microstructure
(Hindawi, 2024)The dissolution of manganese and its deposition on the anode surface cause poor cycling stability in lithium-ion batteries. To alleviate these issues, this study probes the electrochemical activity of highly crystalline ... -
A calibration report for wireless sensor-based weatherboards
(MDPI, 2015)Sub-Saharan Africa contains the highest number of people affected by droughts. Although this can easily be mitigated through the provision of timely, reliable and relevant weather forecasts, the sparse network of weather ... -
Carcinoembryonic antigen immunosensor developed with organoclay nanogold composite film
(ESG, 2014)Organoclay nanogold composite were prepared using gold nanoparticles and the natural Cameroonian clay grafted with amino organosilane. The functionnalization of clay provided abundant amino group to assemble gold nanoparticles. ... -
Characterization of four new compounds from protea cynaroides leaves and their tyrosinase inhibitory potential
(MDPI, 2022)Protea cynaroides (king protea) is a flowering plant that belongs to the Proteaceae family. This multi-stemmed shrub is the national flower of South Africa and has important economic and medicinal values. Traditionally, ... -
Chemical characterisation of benzene oxidation products under high- And low-NOx conditions using chemical ionisation mass spectrometry
(Copernicus GmbH, 2021)Aromatic hydrocarbons are a class of volatile organic compounds associated with anthropogenic activity and make up a significant fraction of urban volatile organic compound (VOC) emissions that contribute to the formation ... -
Chemical, mineralogical and morphological changes in weathered coal fly ash: A case study of a brine impacted wet ash dump
(Elsevier, 2013)The mobility of species in coal fly ash (FA), co-disposed with brine using a wet ash handling system, from a coal fired power generating utility has been investigated. The study was conducted in order to establish if the ... -
Chlorine oxidation of VOCs at a semi-rural site in Beijing: significant chlorine liberation from ClNO2 and subsequent gas- and particle-phase Cl–VOC production
(European Geosciences Union (EGU), 2018)Nitryl chloride (ClNO2) accumulation at night acts as a significant reservoir for active chlorine and impacts the following day’s photochemistry when the chlorine atom is liberated at sunrise. Here, we report simultaneous ... -
Chronocoulometric quantum dot aptasensor for sarscov-2 nucleocapsid protein biomarker
(John Wiley and Sons Inc, 2024)For the first time, a novel mercaptosuccinic acid-capped tungsten telluride quantum dot (MSA-WTe3-QD)-based electrochemical aptasensor was designed for the determination of SARS-CoV-2 N-protein in synthetic human serum, ... -
Co-pelletization of a zirconium-based metal-organic framework (UiO-66) with polymer nanofibers for improved useable capacity in hydrogen storage
(Elsevier, 2021)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 ... -
Compaction of a zirconium metal–organic framework (UiO-66) for high density hydrogen storage applications
(Royal Society of Chemistry, 2018)We report a rare case whereby a metal–organic framework (MOF), namely UiO-66, is compacted at high pressure ( 700 MPa or 100 000 psi) resulting in densification and improved total volumetric hydrogen storage capacity, ... -
Comparison of CO2 capture by ex-situ accelerated carbonation and in in-situ naturally weathered coal fly ash
(Elsevier, 2013)Natural weathering at coal power plants ash dams occurs via processes such as carbonation, dissolution, co-precipitation and fluid transport mechanisms which are responsible for the long-term chemical, physical and geochemical ... -
Complexation-based detection of nickel(ii) at a graphene-chelate probe in the presence of cobalt and zinc by adsorptive stripping voltammetry
(MDPI, 2017)The adsorptive stripping voltammetric detection of nickel and cobalt in water samples at metal film electrodes has been extensively studied. In this work, a novel, environmentally friendly, metal-free electrochemical ... -
Conductive composite biosensor system for electrochemical indinavir drug detection
(HINDAWI LTD, 2015)Indinavir is a protease inhibitor antiretroviral (ARV) drug, which forms part of the highly active antiretroviral therapy during the treatment of HIV/AIDS. Indinavir undergoes first-pass metabolism through the cytochrome ... -
Copper-modified carbon nano-onions as electrode modifiers for the electroanalysis of the antiretroviral drug efavirenz
(Elsevier Ltd, 2023)The high prescription and consumption rate of antiretroviral drugs (ARV) such as Efavirenz (EFV) in South Africa for the treatment of the human immunodeficiency virus (HIV) has resulted in its presence in wastewater and ... -
Correction: Baker, P. et al. electrochemical aptasensor for endocrine disrupting 17β-estradiol based on a poly(3,4-ethylenedioxylthiopene)-gold nanocomposite platform. Sensors 2010, 10, 9872-9890
(MDPI, 2011)Herewith please find corrected structures for Figure 8 in our paper published in Sensors in 2010. -
Correction: Layer-structured FeCo bihydroxide as an ultra-stable bifunctional electrocatalyst for water splitting at high current densities
(Royal society of chemistry, 2021)The development of stable bifunctional electrodes capable of operation at high current densities is a key requirement for large scale hydrogen generation by water electrolysis. Herein, amorphous FeCo hydroxides are ... -
Covid-19 and cancer therapy: Interrelationships and management of cancer cases in the era of Covid-19
(Hindawi, 2021)'e COVID-19 global epidemic poses this generation’s biggest worldwide public health challenge probably since the 1918 influenza epidemic. Recent reports on two new variants have triggered a dramatic upsurge in research ...