Damrongsak, Pattareeya
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Preferred name
Damrongsak, Pattareeya
Alternative Name
Damrongsak, P.
Main Affiliation
Email
pattareeya.da@kmitl.ac.th
14 results
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Item type:Publication, Rhodamine 6G and Au–Pd core–shell nanorods: Fluorescence enhancement for detection of mercury(2018-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Enhancement of fluorescence in inorganic dyes by metallic nanostructured surfaces(2016-01-01); We have studied the influence of shape and chemical content of metallic nanostructures (gold-palladium core-shell nanorods, gold nanobipyramids and single-crystalline porous palladium nanocrystals) on the luminescence of Rhodamine 6G and Coumarin153 dyes. The changes found in the emission intensity are attributed to different proportions of the dyes and the metallic nanostructures. The enhancement of the fluorescence observed by us for the cases of Rhodamine 6G with gold-palladium core-shell nanorods and Rhodamine 6G with gold nanobipyramids suggests their promising plasmonic properties. This may be regarded as a preliminary step towards development of the fluorescent probes possessing high photo-sensitivity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Superhydrophobilization of SiO2 surface with two alkylsilanes for an application in oil/water separation(2018-04-01); ; This study reported a novel approach to superhydrophobilize silica (SiO<inf>2</inf>) surface by silanizing with two alkylsilanes including non-polar short hydrocarbon chains of chlorotrimethylsilane (CTMS) followed by long hydrocarbon chains of octadecyltrichlorosilane (OTS). The silanization of CTMS prior to OTS affected the increase in the density of short and long alkyl chains throughout SiO<inf>2</inf> surface resulting in the surface with low surface energy and high degree of hierarchical micro-nanoscale roughness which were responsible for the superhydrophobicity. The oil/water separation filters prepared by coating cotton fabric with the CTMS- and OTS-modified SiO<inf>2</inf>/polystyrene (PS) composite using a weight ratio of the modified SiO<inf>2</inf>:PS at 2:1 possessed the highest water contact angles of 156° ± 1°. The superhydrophobic/superoleophilic filters showed excellent water repellent, oil/water separation efficiency, and reusability. The results obtained in this study suggest that salinizing the two different structure alkylsilanes, CTMS followed by OTS, can provide synergetic benefit in improving the superhydrophobicity by enhancing the density of alkyl chains on SiO<inf>2</inf> surface. This alternative strategy can be extensively applied for development of other superhydrophobic materials. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Microwave-activated reduced graphene oxide composite with hydrothermally treated corn husk activated carbon as an active electrode for high electrochemical performance in symmetrical carbon-based supercapacitor devices(2026-07-01); This work applies microwaves for synthesizing reduced graphene oxide (rGO) and waste material corn husk activated carbon composites as active electrode materials for symmetric supercapacitors. The rGO is activated by microwave treatment and corn husk carbon by KOH in processed hydrothermal activation, followed by compositing at various weight ratios. Among all compositions, rGO:H_Corn_C (90:10) is reported with the best properties, with a specific surface area of 314.2 m2/g and a high specific capacitance of 1152 F/g at 0.1 A/g. The optimized composite also delivered increasing energy and power densities of up to 160 Wh/kg and 9.68 × 102 W/kg, respectively, within a 1 V operating window. In an experiment by assembling a symmetric coil cell supercapacitor, the device showed a specific capacitance of 142.23 F/g at 0.1 A/g, cycling stability with 98.8% capacitance retention after 1000 cycles of charge-discharge, and peak energy and power densities of 40.68 Wh/kg and 5.74 × 102 W/kg. Overall, the composite material with a high content of rGO and corn husk-derived activated carbon prepared by the hydrothermal method exhibits high-performance for the material in supercapacitor applications. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optical imaging of artificial latent fingerprints using rhodamine 6G and au-core/Pd-shell nanorods(2019-01-01); Latent fingerprints represent valuable information-storage platforms, which play a key role in the forensic practice and health assessment. Recent works have explored novel image-enhancement methods in latent fingerprinting, which are associated with fluorescence dyes. In this study we improve the quality of fingerprint images, using a combination of fluorescence dyes and bimetallic nanoparticles. We find that Rhodamine 6G can serve as a kind of ‘glue’ adhering well onto Au–Pd core–shell nanorods. This system which employs molecules like α- amylase can be successfully used for recognition of artificial latent fingerprints. The appropriate mechanism can be coupling of localized surface plasmon resonance in the nanorods mentioned above and the emission of Rhodamine 6G. As a result, we observe notable enhancement of the images of artificial latent fingerprints. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Antitumor activities of carboplatin–doxorubicin–ZnO complexes in different human cancer cell lines (breast, cervix uteri, colon, liver and oral) under UV exposition(2021-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Kinetics of dye removal using Fe3O4 nanoparticles and pulsed white-LED illumination(2019-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of Adsorption Characteristics of Rhodamine 6G Dye Solution in Fe3O4 Magnetic Nanoparticles on Fluorescence Quantum Yield(2019-01-01); ; In this work, the use of Fe<inf>3</inf>O<inf>4</inf> magnetic nanoparticles in the adsorption of rhodamine 6G solution was evaluated via absorbance and fluorescence spectroscopy using the UV-Vis spectrometer. The adsorption mechanism of rhodamine 6G on Fe<inf>3</inf>O<inf>4</inf> was determined with respect to the adsorbent dosage (2.5-10 mg/L) and treatment time (0-150 min). The experimental data revealed that the fluorescence quantum yield of rhodamine 6G was inversely proportional to the percentage of dye removal. The highest efficiency of dye removal was obtained at 10 mg/L Fe<inf>3</inf>O<inf>4</inf>, and the adsorption capacity was about 150 mg/g, together with a reduced treatment time of 30 min, owing to active adsorption of Fe<inf>3</inf>O<inf>4</inf>. We believe that our study makes a significant contribution to the literature because Fe<inf>3</inf>O<inf>4</inf> magnetic nanoparticles were found to be able to quench rhodamine 6G dye molecules, which will aid in eliminating toxic and hazardous pollutants from dye wastewater, which are otherwise detrimental to the environment and human health. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optical performance of fluorescent collectors integrated with microlens arrays(2017-09-01); Fluorescent collectors have been considered for being used as a light concentrator in photovoltaic applications. It is able to replace the expensive area of solar cells in order to minimize the energy cost. In this study, fluorescent collectors integrated with microlens arrays were developed in order to improve the collection efficiency. Fluorescent collectors were prepared by casting an epoxy resin solution containing Rhodamine 6G dye in the polydimethylsiloxane master mold. Polydimethylsiloxane-based microlens arrays with actual diameters of 804.06-1008.02 μm were fabricated using a replica molding technique. The microlens arrays were then integrated with the fluorescent collectors with various dye concentrations from 2.5 × 10<inf>-4</inf> to 4.5 × 10<inf>-4</inf> Molar. Experimental results were demonstrated that the implementation of polydimethylsiloxane microlens arrays on the top of fluorescent collectors was improved for both light absorption and fluorescent intensity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Highly Hg2+-sensitive and selective fluorescent sensors in aqueous solution and sensors-encapsulated polymeric membrane(2016-01-01);