Boonyarattanakalin, Kanokthip
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Preferred name
Boonyarattanakalin, Kanokthip
Alternative Name
BOONYARATTANAKALIN, Kanokthip
Boonyarattanakalin, K.
Main Affiliation
Email
kanokthip.bo@kmitl.ac.th
21 results
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Item type:Publication, A novel potent autophagy inhibitor ECDD-S27 targets vacuolar ATPase and inhibits cancer cell survival(2019-12-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Characterization and x-ray absorption spectroscopy of ilmenite nanoparticles derived from natural ilmenite ore via acidassisted mechanical ball-milling process(2017-09-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Adsorbed protein on P25 nanoparticles-synthesis, characterization and electrochemical property(2018-09-05) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of seeding layer thickness on physical and morphological structure of Ga/F co-doped ZnO nanostructures(2017-01-01); The effects of seed layer thickness on structural properties and morphology of Ga/F co-doped ZnO nanostructures were investigated in this work. The seed layers with various thicknesses were deposited on glass substrates by dip-coating. It is hypothesized that a certain range of seed layer thickness can significantly alter the outcomes of the morphological structure, density, and shape of the as-synthesized nanostructure products. The Ga/F co-doped ZnO nanostructures were grown on these seed layers by a hydrothermal process using Zn(NO<inf>3</inf>)<inf>2</inf>, NH<inf>4</inf>F, GaN<inf>3</inf>O<inf>9</inf> and hexamethyltetramine. The effects of seeding layer thickness on morphologies and structural properties were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and UV-Vis spectroscopy. More detailed studies to clarify the seed layer effect on the growth of Ga/F co-doped ZnO nanostructures are further discussed. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Investigation on influence of seeding layer on morphological properties of ZnO-based nanostructure prepared by hydrothermal process(2018-01-01); In this present work, bare ZnO low-dimensional structures were synthesized by hydrothermal process with crystal growth assistance using seed layers. Different seeding layer species including ZnO and Ga-doped ZnO films prepared by sol-gel dip coating were introduced onto the substrate before the hydrothermal growth of ZnO-based nanostructures. Zn(NO<inf>3</inf>)<inf>2</inf> and GaN<inf>3</inf>O<inf>9</inf> were utilized as Zn and Ga source during hydrothermal process. The influence of seeding layer types on morphological and shapes of the hydrothermally grown nanostructures have been extensively scrutinized by Field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) and optical spectroscopy. It was revealed that different morphologies and exceptional shapes in form of nanorods of ZnO-based nanostructures were obtained as different seeding layers were introduced. More detailed studies for clarification of seed layer effect on the growth of ZnO-based nanostructures are mentioned and discussed. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of F incorporation on physical and optical properties of hydrothermally grown ZnO nanorods(2018-01-01); F-doped ZnO nanorods were synthesized via hydrothermal process with variation of Fluorine doping contents (0-10%) starting from zinc oxide thin film as a seeding layer for nanorod growth. The zinc oxide seeding thin film was prepared by sol-gel spin coating at 2000 rpm on glass substrate using zinc acetate precursor with annealing at 500°C in air for 2 h. Ammonium fluoride (NH<inf>4</inf>F) was used as F doping precursor. The properties of F-doped ZnO nanorods were characterized by field emission electron microscope (FESEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and UV-Visible spectrophotometer. Corresponding results indicated that growth of ZnO:F nanorods with good crystallinity and grown in (002) plane in undoped ZnO and F-doped ZnO 5%. The average size diameter of undoped and F-doped ZnO nanorods at 3%, 5% and 10% are 56, 96, 70 and 103 nm, respectively. From cross section images the average length of undoped and F-doped ZnO nanorods at 3%, 5% and 10% are 400, 375, 199 and 478 nm, respectively. The transmittance spectra shows moderate transparency (<80%) of the ZnO nanorod film in visible region with corresponding band gap range of 3.25-3.28 eV. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Extraction and characterization of nanocellulose from sugarcane bagasse by ball-milling-assisted acid hydrolysis(2018-09-05); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Theoretical Investigation of the Enantioselective [4 + 2] Cycloaddition Reaction of o-Hydroxystyrene and Azlactone(2019-04-05); Theoretical studies have been undertaken to rationalize the origin of the enantioselective Diels-Alder reaction (DA) of o-hydroxystyrene and azlactone catalyzed by (a) chiral BINOL-phosphoric acid (CPA) and (b) CPA and chiral guanidine (TBO). The sequence of events leading to increased enantioselectivity under the latter conditions have been studied using density functional theory (DFT) methods. The computational results indicate that both the mono- and co-catalytic processes proceed via stepwise [4 + 2] cycloaddition reactions involving three steps, which are (1) C-C bond formation, (2) C-O bond formation, and (3) the opening of the azlactone ring. This results in the formation of an oxygenous cycle with one chiral center. The origin of greater enantioselectivity under the latter catalytic conditions are discussed in terms of the structural characteristics and energetics of the intermediates and transition states formed on the potential energy surface of the competing reactions. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optical absorption and FTIR study of cellulose/tio2hybrid composites(2019-05-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, EFFECT of SEEDING FILM TYPE ON MORPHOLOGY and ELECTRICAL PROPERTIES of Ga-DOPED ZnO NANOSTRUCTURES GROWN by HYDROTHERMAL PROCESS(2018-12-01); In the present work, we are interested in modifying the structures and electrical properties of Ga-doped ZnO (GZO) nanostructures by incorporation of Ga and F elements into ZnO seeding films. The ZnO, Ga-doped ZnO and F-doped ZnO thin film layers were grown by sol-gel dip coating onto glass substrates. The GZO nanostructures were grown by hydrothermal method starting from zinc nitrate and gallium (III) nitrate hydrate with a crystal growth assistance using the different types of seeding film layers. The X-ray diffractometer (XRD) and field emission scanning electron microscope (FE-SEM) are observe for the crystal structures and surface morphologies of GZO nanostructures. The changes in electrical resistance of the GZO nanostructures due to the different seeding layers were analyzed by the four-point probe technique. It is shown that the structural and electrical properties are found to be affected by the types of seeding layers.