Search Results - "Pokpas, Keagan"

Graphene‐AuNP Enhanced Inkjet‐printed Silver Nanoparticle Paper Electrodes for the Detection of Nickel(II)‐Dimethylglyoxime [Ni(dmgH2)] Complexes by Adsorptive Cathodic Stripping Voltammetry (AdCSV) by Pokpas, Keagan, Jahed, Nazeem, McDonald, Earl, Bezuidenhout, Petrone, Smith, Suzanne, Land, Kevin, Iwuoha, Emmanuel

“…The development of low‐cost, disposable electrode materials has been at the forefront of sensor technology in recent decades. Paper, offers possibilities for…”
Get full text

Carbon Nanostructured Immunosensing of Anti-SARS-CoV-2 S-Protein Antibodies by du Plooy, Jarid, Kock, Branham, Jahed, Nazeem, Iwuoha, Emmanuel, Pokpas, Keagan

“…The rampant spread and death rate of the recent coronavirus pandemic related to the SARS-CoV-2 respiratory virus have underscored the critical need for…”
Get full text

Complexation-Based Detection of Nickel(II) at a Graphene-Chelate Probe in the Presence of Cobalt and Zinc by Adsorptive Stripping Voltammetry by Pokpas, Keagan, Jahed, Nazeem, Baker, Priscilla G, Iwuoha, Emmanuel I

“…The adsorptive stripping voltammetric detection of nickel and cobalt in water samples at metal film electrodes has been extensively studied. In this work, a…”
Get full text

Room-Temperature Turkevich Method: Formation of Gold Nanoparticles at the Speed of Mixing Using Cyclic Oxocarbon Reducing Agents by Larm, Nathaniel E, Essner, Jeremy B, Pokpas, Keagan, Canon, James A, Jahed, Nazeem, Iwuoha, Emmanuel I, Baker, Gary A

“…We demonstrate a facile and reproducible means of producing quasi-spherical, colloidally stable gold nanoparticles (AuNPs) on the basis of rapid…”
Get full text

Determination of Paracetamol on Electrochemically Reduced Graphene Oxide-Antimony Nanocomposite Modified Pencil Graphite Electrode Using Adsorptive Stripping Differential Pulse Voltammetry by Leve, Zandile D, Jahed, Nazeem, Sanga, Nelia A, Iwuoha, Emmanuel I, Pokpas, Keagan

“…A simple, highly sensitive, accurate, and low-cost electrochemical sensor was developed for the determination of over-the-counter painkiller, paracetamol (PC)…”
Get full text

Advances in paper-based electrochemical immunosensors: review of fabrication strategies and biomedical applications by du Plooy, Jarid, Jahed, Nazeem, Iwuoha, Emmanuel, Pokpas, Keagan

“…Cellulose paper-based sensing devices have shown promise in addressing the accuracy, sensitivity, selectivity, analysis time and cost of current disease…”
Get full text

Advances in paper-based battery research for biodegradable energy storage by Juqu, Thando, Willenberg, Shane Clayton, Pokpas, Keagan, Ross, Natasha

“…The increased demand for energy due to industrialisation and a steadily growing population has placed greater strain on the development of eco-friendly energy…”
Get full text

Nickel contamination analysis at cost-effective silver printed paper-based electrodes based on carbon black dimethylglyoxime ink as electrode modifier by Keagan Pokpas, Nazeem Jahed, Petrone Bezuidenhout, Suzanne Smith, Kevin Land, Emmanuel Iwuoha

“…Electrochemical detection of metal cations at paper-based sensors has been suggested as an attractive alternative to current spectroscopic and chromatographic…”
Get full text

Review on Surface-Modified Electrodes for the Enhanced Electrochemical Detection of Selective Serotonin Reuptake Inhibitors (SSRIs) by Barry, Simone C L, Franke, Candice, Mulaudzi, Takalani, Pokpas, Keagan, Ajayi, Rachel Fanelwa

“…Selective serotonin re-uptake inhibitors (SSRIs) are one of the most commonly prescribed classes of antidepressants used for the treatment of moderate to…”
Get full text

Chronocoulometric Quantum Dot Aptasensor for SARS‐CoV‐2 Nucleocapsid Protein Biomarker by Sanga, Nelia A., Oranzie, Marlon, Leve, Zandile, Januarie, Kaylin C., Mokwebo, Kefilwe V., Uhuo, Onyinyechi V., Ross, Natasha, Douman, Samantha F., Pokpas, Keagan, Iwuoha, Emmanuel I.

“…For the first time, a novel mercaptosuccinic acid‐capped tungsten telluride quantum dot (MSA‐WTe3‐QD)‐based electrochemical aptasensor was designed for the…”
Get full text

Sensitive Electrochemical Determination of Bisphenol a Using a Disposable, Electrodeposited Antimony-Graphene Nanocomposite Pencil Graphite Electrode (PGE) and Differential Pulse Voltammetry (DPV) by Ghaffari, Nastaran, Pokpas, Keagan, Iwuoha, Emmanuel, Jahed, Nazeem

“…Herein the synergistic properties of electrochemically reduced graphene oxide-antimony nanoparticles (ERGO-SbNPs) were leveraged for the ultrasensitive…”
Get full text

Tuneable, Pre-stored Paper-Based Electrochemical Cells (μPECs): an Adsorptive Stripping Voltammetric Approach to Metal Analysis by Pokpas, Keagan, Jahed, Nazeem, Iwuoha, Emmanuel

“…The development of point-of-care (POC) devices for the detection of environmental contaminants and the early monitoring of disease outbreaks in the health and…”
Get full text

Interferon gamma (IFN-γ)-sensitive TB aptasensor based on novel chitosan-indium nano-kesterite (χtCITS)-labeled DNA aptamer hairpin technology by Uhuo, Onyinyechi, Waryo, Tesfaye, Oranzie, Marlon, Sanga, Nelia, Leve, Zandile, January, Jaymi, Tshobeni, Ziyanda, Pokpas, Keagan, Douman, Samantha, Iwuoha, Emmanuel

“…Schematic of IFN-γ aptasensor fabrication using χtCITS on SPCE, with SMCC crosslinker), AptMB recognition element and sea block blocking buffer (SBB). [Display…”
Get full text

Enhanced Specificity and Sensitivity for the Determination of Nickel(II) by Square-wave Adsorptive Cathodic Stripping Voltammetry at Disposable Graphene-modified Pencil Graphite Electrodes by Tekenya, Ronald, Pokpas, Keagan, Jahed, Nazeem, Iwuoha, Emmanuel I.

“…Chemical sensors relying on graphene-based materials have been widely used for electrochemical determination of metal ions and have demonstrated excellent…”
Get full text

Correction to: Tuneable, Pre-Stored Paper-Based Electrochemical Cells (μPECs): an Adsorptive Stripping Voltammetric Approach to Metal Analysis by Pokpas, Keagan, Jahed, Nazeem, Iwuoha, Emmanuel

“…The article "Tuneable, Pre-stored Paper-Based Electrochemical Cells (μPECs): an Adsorptive Stripping Voltammetric Approach to Metal Analysis", written by…”
Get full text

Preferential Stripping Analysis of Post-Transition Metals (In and Ga) at Bi/Hg Films Electroplated on Graphene-Functionalized Graphite Rods by Ghaffari, Nastaran, Jahed, Nazeem, Abader, Zareenah, Baker, Priscilla G. L., Pokpas, Keagan

“…In this study, we introduce a novel electrochemical sensor combining reduced graphene oxide (rGO) sheets with a bismuth–mercury (Bi/Hg) film, electroplated…”
Get full text

Electrochemically Reduced Graphene Oxide Pencil-Graphite in situ Plated Bismuth-film Electrode for the Determination of Trace Metals by Anodic Stripping Voltammetry by Pokpas, Keagan, Zbeda, Salma, Jahed, Nazeem, Mohamed, Nuralli, Baker, Priscilla G., Iwuoha, Emmanuel I.

“…An electrochemical platform was developed based on a pencil-graphite electrode (PGE) modified with electrochemically reduced graphene oxide (ERGO) sheets and…”
Get full text

Pt Nanoparticles Electrodeposited on an Ultrathin Nitrogen-Rich Underlayer for Methanol Sensors by Le, Thi Phuong Thuy, Nguyen, Thi Nguyet Anh, Vu, Thu Thi, Aubert, Pierre-Henri, Pokpas, Keagan, Pham-Truong, Thuan-Nguyen

“…Developing highly efficient nanoscale catalysts for the methanol oxidation reaction (MOR) remains crucial for advancements in methanol detection across various…”
Get full text

A Simplistic Label‐Free Electrochemical Immunosensing Approach for Rapid and Sensitive Detection of Anti‐SARS‐COV‐2 Nucleocapsid Antibodies by Kock, Branham J., Du Plooy, Jarid, Cloete, Rochida A., Jahed, Nazeem, Nguyen Pham‐Truong, Thuan, Arendse, Christopher, Pokpas, Keagan

“…Rapid and precise detection of SARS‐CoV‐2 antibodies is paramount for effective outbreak monitoring and vaccine efficacy assessment. While existing approaches…”
Get full text

Synthesis and Characterization of Palladium/Silver Modified Reduced Graphene Oxide–Nanocomposite Platform for Electrochemical Sensors by Leve, Zandile, Ross, Natasha, Pokpas, Keagan, Carleschi, Emanuela, Doyle, Bryan P., Abraham Sanga, Nelia, Mokwebo, Kefilwe Vanessa, Iwuoha, Emmanuel

“…Metal nanoparticles incorporated into carbon nanostructures have tremendous applications in the field of nanosensors and other technologies. Herein, a…”
Get full text