A5015338544- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Molecular Sensors and Ion Detection
- Luminescence and Fluorescent Materials
- Analytical chemistry methods development
- Adsorption and biosorption for pollutant removal
- Porphyrin and Phthalocyanine Chemistry
- Analytical Methods in Pharmaceuticals
- Supramolecular Chemistry and Complexes
- Arsenic contamination and mitigation
- Advanced biosensing and bioanalysis techniques
- Membrane Separation and Gas Transport
- Sulfur Compounds in Biology
- Pigment Synthesis and Properties
- Metal-Organic Frameworks: Synthesis and Applications
- Photochemistry and Electron Transfer Studies
- Nanomaterials for catalytic reactions
- Dye analysis and toxicity
- Molecular Junctions and Nanostructures
- Pharmacological Effects and Assays
- Chemical Synthesis and Reactions
- Water Quality Monitoring and Analysis
- Graphene and Nanomaterials Applications
- Extraction and Separation Processes
King Abdulaziz University
2012-2025
Newcastle University
2012-2014
Red- and blue-absorbing boron dipyrromethene dyes, bearing opposite electronic charges, associate in solution to form a 1:2 complex having stability constant of ca. 10(17) M(-2). The can be dismantled by addition large excess tetra-N-butylammonium cations. same displays liquid crystalline properties on heating from rt above 150 °C, as characterized various experimental techniques. Highly efficient energy transfer the red blue dye occurs both initial subsequent mesomorphic state.
This study focuses on using a facile method for the green preparation of activated carbon (AC) from palm tree fiber (PTF) waste. The synthesized cost-effective AC was investigated removal an anionic dye (Congo red, CR) and cationic (Rhodamine B, RhB) wastewater. morphological structural characterization were performed by scanning electron microscopy (SEM), transmission (TEM), surface area, Fourier transform infrared spectroscopy (FTIR), total pore volume, average diameter size distribution,...
ABSTRACT In this study, a novel poly(methyl methacrylate) (PMMA) was prepared via polycondensation method using biobased furan derivative as cross‐linking agent 2,5‐bis(aminomethyl)furan (BAF) for the removal of cationic dye crystal violet (CV) and detection cadmium ions (Cd 2+ ). The structural, morphological, thermal characteristics new resulting cross‐linked polymers (BAF–PMMA (1–5) ) were examined Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X‐ray...
In response to the rising interest in reducing atmospheric CO 2 levels and heavy metals water, new polyaminal-linked polymer networks were effectively synthesized using a one-pot polycondensation reaction of melamine 9-anthracenecarboxaldehyde (PAN-AN). The polyaminal porosity parameter was investigated applied for adsorption metal removal. Fourier transform infrared spectroscopy, solid-state ¹³C NMR, X-ray diffraction used confirm formation structure. porous material structure determined...
Sterically unhindered boron dipyrromethene dyes bearing aryl hydrocarbons at the meso position can function as fluorescent probes for monitoring changes in rheology of surrounding environment. The key aspect such behaviour relates to ease rotation ring, which is set part by frictional forces with nearby solvent molecules. For target dye under consideration here, gyration meso-phenylene ring shows a pronounced temperature dependence but only modest sensitivity towards applied pressure....
The redox behavior of spironolactone (SP) drug in Britton–Robinson (BR) buffer pH 2–11 was investigated by differential pulse cathodic stripping voltammetry (DPCSV) and cyclic (CV) at hanging mercury dropping electrode (HMDE). At 9–10.5, the DPCSV SP showed two peaks −1.15 −1.38 V HMDE vs. Ag/AgCl reference electrode. In CV, 9–10, dependence peak current, Ip,c potential, Ep,c second (Ep,c2) on scan rate (ν) depolizer concentrations typical an coupled (EC) chemical reaction type mechanism....
A pair of covalently linked molecular dyads is described in which two disparate boron dipyrromethene dyes are separated by a tolane-like spacer. Efficient electronic energy transfer (EET) occurs across the dyad; mechanism involves important contributions from both Förster-type coulombic interactions and Dexter-type electron exchange processes. The acceptor equipped with long paraffinic chains that favor aggregation at high concentration or low temperature. aggregate displays red-shifted...
Abstract The permanganate–H 2 SO 4 redox reaction, useful in oxidative treatments under aqueous conditions, was studied spectrophotometrically the absence and presence of cetyltrimethylammonium bromide (CTAB). decolorization reactions were influenced by [MnO − ], [H temperature. Permanganate reduction follows first‐, complex–order kinetics with permanganate, H concentrations, respectively. permanganate (Mn(VII)) proceeds through a complex formation between MnO . characteristic absorption...
In the modern era, sol‐gel plays a key role in progress of new generation dispersive solid‐phase microextractors (d– µ SPMEs) for removal organic and inorganic pollutants complex matrices. Thus, current study reports use sol‐gel‐functionalized polyurethane foams (PUFs) as novel solid platform complete extraction chromium (VI) species from aqueous media. The planned protocol was based upon formed binary ion associates between protonated ether and/or urethane groups PUFs chlorochromate anion...
Herein, a simple, superhydrophobic, superoleeophilic and low cost microextractor Au nanparticles (Au NPs) based polyurethane (PUFs) solid platform NPs/PUFs) has been developed as promising sorbent for removal recovery of Congo red (CR) textile dye from water bodies. The was characterised using UV-visible SEM techniques. procedure relied complete retention the aqueous solution at pH 5.0–5.5 onto an NP/PUF extractor. Analytical assessments revealed that NPs/PUFs combination significantly...
The extraordinary prerequisite for the analysis of an anabolic steroid, namely dianabol (DB), has inspired towards development a cost-effective and high-performance sensing probe. Thus, simple robust electrochemical sensor (c-MWCNTs-Nafion®lGCE) widely used was developed using glassy carbon electrode (GCE) modified with functionalized carboxylated multi-walled nanotubes (c-MWCNT) Nafion®. At pH 7–8, differential pulse–cathodic stripping voltammetry (DP-CSV) displayed two cathodic peaks...