The Effect of Chemical Solutions (Isopropyl Alcohol, Dichloromethane, Acetone and Triton X-100) on the Dispersion of Single-Walled Carbon Nanotubes

Low, Foo Wah; Liu, Weiwen; Hashim, U.; Lai, Chin Wei

doi:10.4028/www.scientific.net/amr.1109.113

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…Modification in the surface charge, in turn, affects distribution of electrostatic potential throughout the nanowire. This change in electrostatic potential affects the conductance of the nanowire which can be detected as fluctuations in current when a voltage is applied at the appropriate terminals of the silicon nanowire [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Silicon Nanowire Surface Preparation Using Chitosan

Adam

Hashim

Dhahi

2015

AMR

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Chitosan (CS) is an interesting polysaccharide biopolymer that widely used in the fields of agriculture, horticulture, industry, biomedicine and chemical sensor due to its numerous advantage like non-toxic nature, excellent film forming ability, good mechanical strength, high permeability and cost effectiveness. The chitosan solution (0.05 %) was prepared by dissolving 0.05g chitosan (Sigma corp) in 10 ml of acetic acid (2mol/L). after the is the preparation of preparation of chitosan: A very small amount of chitosan were taken and dissolved in distilled water. The solution was then ultrasonicated for 90 minutes to obtain a homogenized solution. The spectra shows featureless absorption in the 400-800 nm and a sharp absorption peak at 250 nm regions which are similar to the spectra of chitosan in the previous research. The UV-vis spectra of chitosan in at different concentration. The spectra show featureless absorption in the 400-800 nm. A sharp absorption peak at approximately 300 nm. The observed absorption peak in chitosan solution depends on the solution concentration. When the chitosan concentration was less, the peak was not that clearly seen compared to the concentration of 0.05.

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Section: Introductionmentioning

confidence: 99%

Silicon Nanowire Surface Preparation Using Chitosan

Adam

Hashim

Dhahi

2015

AMR

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“…This data also proves that acid functionalization method eliminates metal residue in MWCNT structure. The dispersability test was conducted using different time of functionalized MWCNT and IPA was chosen as the solvent [17]. Raw and 30 minutes functionalized MWCNT have demonstrated poor dispersion in IPA.…”

Section: Resultsmentioning

confidence: 99%

Oxidation functionalization of multiwalled carbon nanotube by mild acid sonication

Fatin

Ruslinda

Norhafizah

et al. 2014

2014 IEEE Conference on Biomedical Engineering and Sciences (IECBES)

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Multiwalled carbon nanotube (MWCNT) has excellent properties in thermal and electrical conductivities, high tensile strength and surface area and low mass over volume. However, the usage is still limited due to its inert characteristic. MWCNT surface is hydrophobic and not miscible in most solvents. This work emphasize on simple and practical method of functionalization by sonication in mild acid condition. 6M of Nitric acid and Sulfuric acid mixture (Method I) and 6M of Nitric acid (Method II) were demonstrated as an oxidizing agent to introduce carboxyl functional group on MWCNTs surface. Both type of functionalization has demonstrated carboxyl formation but functionalization in acid mixture was chosen to be used for further study for aptamer immobilization. FTIR and SEM have been used to investigate the binding properties and surface morphology respectively. The functionalization time has also been studied by using dispersability test which resulted in good dispersion after 1 hour of functionalization.

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“…It involved very low fluid volumes consumption, in other words, less waste, lower reagents costs and less sample volumes for diagnostics. Lab on chip is also advanced in its compactness as the integration of much functionality [13][14][15][16]. The analysis is accelerated and response times is reduced because short diffusion distances, fast heating, high surface to volume ratios, small heat capacities.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Geometrically Enhanced Micromixer for Homogenous Mixing

Adam

Hashim

Dhahi

2015

AMR

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At a macro scale level, mixing is generally achieved by a turbulent flow, which makes possible of segregating the fluid in small domains, thereby leading to an increase in the contact surface and decrease in the mixing path. At low Reynolds number, the viscous effects dominate inertial effects and a completely laminar flow occurs. In the laminar flow system, fluid streams flow parallel to each other and the velocity at any location within the fluid stream is variant with pressure when boundary conditions are constant and due to the change in surface area–to-volume tension and diffusion, do not simply scale linearly from large to small devices. This makes the use of microfluidic as a mixing device difficult. Thus, the study posed to bridge this gap by created geometrically enhanced Micromixer for homogenous mixing.

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The Effect of Chemical Solutions (Isopropyl Alcohol, Dichloromethane, Acetone and Triton X-100) on the Dispersion of Single-Walled Carbon Nanotubes

Cited by 6 publications

References 18 publications

Silicon Nanowire Surface Preparation Using Chitosan

Silicon Nanowire Surface Preparation Using Chitosan

Oxidation functionalization of multiwalled carbon nanotube by mild acid sonication

Design and Fabrication of Geometrically Enhanced Micromixer for Homogenous Mixing

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