A5016107355- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Conducting polymers and applications
- Analytical chemistry methods development
- Advanced Chemical Sensor Technologies
- Layered Double Hydroxides Synthesis and Applications
- Adsorption and biosorption for pollutant removal
- Clay minerals and soil interactions
- Advancements in Battery Materials
- Pesticide and Herbicide Environmental Studies
- Dye analysis and toxicity
- X-ray Diffraction in Crystallography
- Concrete and Cement Materials Research
- Pesticide Residue Analysis and Safety
- Crystallization and Solubility Studies
- Analytical Chemistry and Chromatography
- Metal-Organic Frameworks: Synthesis and Applications
- Mesoporous Materials and Catalysis
- Magnesium Oxide Properties and Applications
- Recycling and utilization of industrial and municipal waste in materials production
- Advanced Battery Technologies Research
- Paraquat toxicity studies and treatments
- Phytochemical compounds biological activities
- Advanced Battery Materials and Technologies
Université de Dschang
2015-2024
Université de Yaoundé I
2012-2024
Ruhr University Bochum
2015
Laboratoire de Chimie
2003-2014
Laboratoire de Chimie Physique et Microbiologie pour l'Environnement
2005-2010
University of Ottawa
2007-2009
Université de Lorraine
2004-2005
Centre National de la Recherche Scientifique
2004-2005
Abstract An almost exhaustive overview of the determination and remediation p -nitrophenol ( -NP)-contaminated media is herein presented. -NP one priority pollutants on U.S. Environmental Protection Agency list. This because either a precursor or derivative good number pollutants. It itself very carcinogenic tends to persist in water soil. has prompted development wide range analytical tools by researchers for its eventual removal from contaminated sites. These include electrochemical...
As the excessive presence of heavy metals in environment significantly affects human health, it becomes necessary to develop efficient, selective, and sensitive methods for their detection. In this study, a novel electrochemical sensor detection Pb2+ ions is described. The proposed based on glassy carbon electrode (GCE) modified by thin film histidine-grafted metal–organic framework (MOF-808-His). MOF-808 was obtained solvothermally, then postsynthetically substituting coordinated acetate...
The grafting of 3-aminopropyltriethoxysilane (APTES) onto the internal aluminol groups two kaolinite minerals from Georgia and Cameroon was achieved by utilizing their corresponding dimethyl sulfoxide (DMSO) intercalation compounds as intermediates. modified clays were characterized powder X-ray diffraction, thermal gravimetric analysis coupled with mass spectrometry, Fourier transform infrared, solid-state MAS NMR. These techniques demonstrated effectiveness interlamellar process. An...
The surface properties of organosilane-modified smectite-type clays were examined by various physico-chemical techniques, including thermal gravimetric analysis (TGA), area measurements from N2 adsorption/desorption experiments (BET method), Fourier transform infrared spectroscopy (FTIR), chemical stability in aqueous medium, and elemental analysis. organically modified derived the reaction two natural Cameroonian smectites one standard bentonite sample (for comparison purposes) with...
Naturally occurring smectite clays have been expanded by a surfactant (cetyltrimethylammonium) and cosurfactant (dodecylamine), which were then used in combination with the sol−gel process to prepare porous clay heterostructures (PCHs). A variety of thiol-functionalized PCHs obtained one step surfactant-directed co-condensation tetraethoxysilane (TEOS) 3-mercaptopropyltrimethoxysilane (MPTMS) various molar ratios (ranging from 0 35% MPTMS) interlayer region clay. These materials...
This work reports the preparation and characterization of a new nanohybrid material obtained by grafting an organic cation, namely 1-(2-Hydroxyethyl)-3-methylimidazolium, on interlayer surfaces kaolinite utilizing dimethylsulfoxide (DMSO) intercalate as starting material. The chemical modification process involved in-situ displacement DMSO imidazolium salt, followed under carefully controlled melt reaction conditions. structure resulting was characterized X-ray Diffraction (powder oriented...
Abstract This work reports the electroanalysis of lead(II) in aqueous medium, using a carbon paste electrode modified by novel thiol‐functionalized clay. later was obtained upon grafting 3‐chloropropyltriethoxysilane onto interlayer surfaces kaolinite, followed substitution under carefully controlled conditions chloro thiol groups. The raw its dimethylsulfoxide (DMSO) intercalate used as starting material and resulting hybrids were characterized X‐ray diffraction, thermal analysis, infrared...
The aminated metal-organic framework H2N-MIL-101(Cr) was used as the carbon paste electrode (CPE) modifier for determination of tartrazine (Tz) in soft drinks. amino material characterized by electrochemical impedance spectroscopy and showed significantly faster electron transfer with lower charge-transfer resistance (0.13 kΩ) compared to modified unfunctionalized MIL-101(Cr) (1.1 kΩ). H2N-MIL-101(Cr)-modified CPE [H2N-MIL-101(Cr)-CPE] then cyclic voltammetry (CV) using [Fe(CN)6]3-...
In this work, biomass lignocellulosic materials extracted via chemical and physical treatments from bean pistachio pod waste were used for the optimized elimination of Indigo Carmine (IC) aqueous medium, using a design experiments methodology. The physicochemical properties studied (raw treated counterparts) sorption IC investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with EDX, thermal analysis. Key variables...
Chemical sensors for the determination of uric acid (UA) in human urine samples have been developed using a composite material based on two core–shells (Ag 2 S@- and Bi S 3 @-) coated with metal–organic framework (NH -MIL-125-Ti) polyaniline (PANI).
Abstract A selective amperometric sensor was developed to detect the antibiotic ceftriaxone (CEF) using a composite film of poly(β‐cyclodextrin) and metal‐organic framework (MOF). The obtained by electro‐polymerizing β‐cyclodextrin (β‐CD) onto glassy carbon electrode (GCE) previously coated with MIL‐101(Cr) MOF film. This design prevents particles’ loss during extended use. structurally characterized scanning electron microscopy, X‐ray diffraction, N 2 adsorption‐desorption isotherms (BET...