A5055798731- Adsorption and biosorption for pollutant removal
- Nanomaterials for catalytic reactions
- Graphene and Nanomaterials Applications
- Fluoride Effects and Removal
- Molecular Sensors and Ion Detection
- Extraction and Separation Processes
- Graphene research and applications
- Environmental remediation with nanomaterials
- X-ray Diffraction in Crystallography
- Electrochemical Analysis and Applications
- Advanced biosensing and bioanalysis techniques
- Iron oxide chemistry and applications
- Crystallization and Solubility Studies
- Conducting polymers and applications
- Copper-based nanomaterials and applications
- Arsenic contamination and mitigation
- Phosphorus and nutrient management
- Luminescence and Fluorescent Materials
- Advanced Photocatalysis Techniques
- COVID-19 impact on air quality
- COVID-19 epidemiological studies
- Electrostatics and Colloid Interactions
- Nanoparticles: synthesis and applications
- Nanoplatforms for cancer theranostics
- Water Quality Monitoring and Analysis
Saha Institute of Nuclear Physics
2015-2020
University of Johannesburg
2014-2017
Tshwane University of Technology
2013-2014
Presidency University
2003-2012
Abstract Synthesis of crystalline hydrous ferric oxide (CHFO), a modified iron-based adsorbent, and its arsenic sorption behaviour have been reported. Here, the effects pH with variation concentrations, contact time, pre-drying CHFO, competition some other anions regeneration arsenicsaturated CHFO are conducted by batch method. The As(V) is highly dependent on concentration experimental system, while that for As(III) insensitive. found to require less time attain equilibrium than arsenic(V)....
A new coumarin based turn on fluorescent sensor (<bold>R1</bold>) was reported for the detection of highly hazardous <bold>Cd</bold><sup>2+</sup> with excellent selectivity and sensitivity without any interference other metal ions.
Abstract Fluoride removal with varying different parameters at 303 ± 1.6 K and pH 6.5 0.2 was investigated by hydrous iron(III)-chromium(III) bimetal oxide. The kinetic equilibrium data fitted the pseudo-second order Langmuir isotherm equations very well (R2 = 0.99−1.00), respectively. capacity (θ) free energy (EDR) of adsorption evaluated were 16.34 (±0.50) mg·g−1 15.81 kJ·mol−1, estimated thermodynamic viz. ΔH0, ΔG0, ΔS0 indicated that reaction endothermic but spontaneous for entropy...
The sorption behaviors of M(II) (M = Cu, Cd) were investigated from their aqueous solution by magnetic Mn-doped Fe(III) oxide nanoparticle implanted graphene (GMIO) at varying pH, contact times, and concentrations. Kinetically, the pseudo-second-order equation governed overall process optimized pH (5.1 ± 0.1). Redlich–Peterson (R–P) (0.97 < R2 1.00, 0.84 g 1.00) Langmuir (0.96 isotherms described equilibriums better than Freundlich (0.86 0.96). Monolayer capacity values GMIO for increased...
Bioactive nanomaterials, namely, gallium oxyhydroxide GaO(OH), also surface-conjugated GaO(OH) with a giant sugar molecule β-cyclodextrin (CD), have been prepared through simple wet chemical route such that the same could be suitably used in biomedical diagnostics as well therapeutic applications. Several physical methods were for their characterization: powder X-ray diffraction pattern of NPs grain size determination, optical spectroscopic absorption (UV-vis and FT-IR), fluorescence...
Removal performances of Ni(II) and Cr(VI) from water were investigated using a packed fixed bed agglomerated nanoparticles hydrous titanium(IV) oxide (NHTO). The parameters varied the (i) depth, (ii) flow rate, (iii) feed solution concentrations. Comparison breakthrough volumes indicated that removal performance (at pH 5.0 ± 0.1) was better than 2.0 by NHTO fixed-bed columns. data described Thomas (R2 = 0.983−0.999) bed-depth service time (BDST) 0.992−0.998) models Adams−Bohart model...
Abstract Drug sensitization with various inorganic nanoparticles (NPs) has proved to be a promising and an emergent concept in the field of nanomedicine. Rose bengal (RB), notable photosensitizer, triggers formation reactive oxygen species under green‐light irradiation, consequently, it induces cytotoxicity cell death. In present study, effect photoinduced dynamics RB upon complexation semiconductor zinc oxide NPs is explored. To accomplish this, we successfully synthesized nanohybrids ZnO...
An adsorptive process for the defluoridation of drinking water was performed using a hybrid nanocomposite hydrous titanium oxide@polypyrrole (HTiO<sub>2</sub>@PPy), as scavenger.