A5019535187- Graphene research and applications
- Gas Sensing Nanomaterials and Sensors
- Supercapacitor Materials and Fabrication
- ZnO doping and properties
- Phase Equilibria and Thermodynamics
- Advanced Sensor and Energy Harvesting Materials
- Advanced Photocatalysis Techniques
- Graphene and Nanomaterials Applications
- Carbon Nanotubes in Composites
- TiO2 Photocatalysis and Solar Cells
- Surfactants and Colloidal Systems
- Conducting polymers and applications
- Carbon Dioxide Capture Technologies
- Analytical Chemistry and Sensors
- Membrane Separation Technologies
- Advanced Cellulose Research Studies
- Transition Metal Oxide Nanomaterials
- Layered Double Hydroxides Synthesis and Applications
- Ionic liquids properties and applications
- Polymer Nanocomposites and Properties
- Electrochemical sensors and biosensors
- Nanocomposite Films for Food Packaging
- Organic Light-Emitting Diodes Research
- Advanced Nanomaterials in Catalysis
- Advancements in Battery Materials
Sultan Idris Education University
2015-2024
Centre de Nanosciences et de Nanotechnologies
2017
Indonesia University of Education
2015
Hospital Pulau Pinang
2014
University of Bristol
2009-2013
Summary Several commercially available and a few experimental, nonionic surfactants were identified that are capable of dissolving in carbon dioxide (CO2) dilute concentration at typical minimum- miscibility-pressure (MMP) conditions and, upon mixing with brine high-pressure windowed cell, stabilizing CO2-in-brine foams. These slightly CO2-soluble, water-soluble include branched alkylphenol ethoxylates, alkyl fatty-acid-based surfactant, predominantly linear ethoxylated alcohol. Many the...
Cellulose nanofibers (CNFs) are the most advanced bio-nanomaterial utilized in various applications due to their unique physical and structural properties, renewability, biodegradability, biocompatibility. It has been isolated from diverse sources including plants as well textile wastes using different isolation techniques, such acid hydrolysis, high-intensity ultrasonication, steam explosion process. Here, we planned extract isolate CNFs carpet a supercritical carbon dioxide (Sc.CO2)...
The past few years have witnessed extensive global industrial development that has led to massive pollution most available water resources. There is no alternative sustainable development, and the utilization of agricultural waste for wastewater treatment been always a novel milestone in goals. Agricultural-waste-based nano-activated carbon exhibits high porosity, great surface area, unique functional groups promote it becoming future solution applications. Several modification approaches...
A trichain anionic surfactant sodium 1,4-bis(neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) is shown to aggregate in three different types of solvent: water, heptane, and liquid CO2. Small-angle neutron scattering (SANS) has been used characterize the aggregates dense Surface tension measurements, analyses, show that addition a third branched chain structural template critical for sufficiently lowering surface energy, tipping balance between CO2-incompatible (AOT)...
Getting their feet wet: Low-cost hydrocarbon surfactants act as fluid modifiers for supercritical carbon dioxide (scCO(2)). Increased terminal branching of the surfactant chains aids micelle formation (see middle picture: CO(2) green), and more allows water to be incorporated (right, blue).
The article addresses an important, and still unresolved question in the field of CO2 science technology: what is minimum fluorine content necessary to obtain a CO2-philic surfactant? A previous publication (Langmuir2002, 18, 3014) suggested there should be ideal fluorination level: for optimization possible process applications CO2, it important establish just how little F needed render surfactant CO2-philic. Here, optimum chemical structures water-in-CO2 (w/c) microemulsion stabilization...
The relationships between molecular architecture, aggregation, and interfacial activity of a new class CO(2)-philic hybrid surfactants are investigated. surfactant CF2/AOT4 [sodium (4H,4H,5H,5H,5H-pentafluoropentyl-3,5,5-trimethyl-1-hexyl)-2-sulfosuccinate] was synthesized, having one hydrocarbon chain separate fluorocarbon chain. This H-F structure strikes fine balance properties, on hand minimizing the fluorine content, while other maintaining sufficient level CO(2)-philicity. has been...
The fluorinated double-tailed glutarate anionic surfactant, sodium 1,5-bis[(1H,1H,2H,2H-perfluorodecyl)oxy]-1,5-dioxopentane-2-sulfonate (8FG(EO)2), was found to stabilize water-in-supercritical CO2 microemulsions with high water-to-surfactant molar ratios (W0). Studies were carried out here obtain detailed information on the phase stability and nanostructure of by using a high-pressure UV−vis dye probe small-angle neutron scattering (SANS) measurements. spectra, methyl orange as reporter...