Boonyarattanakalin, Kanokthip
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Boonyarattanakalin, Kanokthip
Alternative Name
BOONYARATTANAKALIN, Kanokthip
Boonyarattanakalin, K.
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kanokthip.bo@kmitl.ac.th
47 results
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Item type:Publication, Particle Morphology and Optical Property of Silicate Powder Prepared from Waste Borosilicate Glass by High Energy Ball Milling Process(2022-01-01); ; Chongsri, KrisanaThe aim of this work was focused on the size reduction of waste glass that was obtained from broken beaker glass in the laboratory. The particle size reduction of glass cullet was performed by a high energy ball milling process. Firstly, the obtained beaker glass was smashed into fine particles before the milling process. The milling parameters studied, which had potential effects on the efficiency of the milling process, were rotation speed, milling time and ball sizes. The particle size and morphology of before/after milled silicate powder were evaluated by a particle analyzer and a field emission scanning electron microscope (FE-SEM). It was shown that the particle size of the milled powder had decreased after milling. However, agglomeration occurred after the use of high rotation speeds and longer milling times. Furthermore, functional groups of the milled samples were analyzed by a Fourier transform-infrared (FT-IR) spectrometer. The FTIR spectra of samples of each milled condition displayede similar patterns. Meanwhile, an optical property, the scattering effect of milled samples of different particle sizes, was identified by a luminance meter. The preliminary results suggested that the minimum particle size of the milled glass was reached at 1.33 µm with milling time of 30 min at 500 rpm. Therefore, an increase of light scattering property occurred, and this correspondented to the smaller particle size of milled silicate powder. - 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, Preparation of potassium tungsten bronze (KxWO3) for near-infrared shielding application via high-energy ball milling: Effect of milling time(2026-07-15) - 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. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Turning the Near-Infrared Shielding Performance of Erbium/Antimony-Codoped Tin Oxide Nanomaterials Derived via a Sonochemically Assisted Method(2026-04-07); Energy consumption is one of the most important concerning issues of environmental problems especially the global warming phenomenon, with energy usage being the main cause. To reduce the energy used for cooling systems, development of material for smart buildings for near-infrared (NIR) protection is a challenge of material society. Metal oxides including tin oxide (SnO2) with an antimony (Sb) dopant are a candidate owing to their NIR shielding property. However, the upgrading of NIR absorption performance with rare-earth doping due to the specific property of rare-earth elements especially erbium (Er) shows strong absorption of the near-infrared region. This article synthesized Er/Sb-codoped SnO2 nanoparticles by sonochemical and thermal treatment processes at various Er dopant concentrations with a Sb dopant concentration stabilized at 5%. Crystallinity and morphology exhibited the tetragonal phase of SnO2 with a sphere-like nanostructure with an approximately average size of 10 nm. X-ray photoelectron spectroscopy was used to evaluate the chemical oxidation state of all elements, which verified the Er3+ and Sb5+ oxidation states of dopant ions, and oxygen vacancy observation led to the NIR absorption improvement. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, ACTIVE-ILMENITE SURFACE STRUCTURE INFLUENCE ON ACID-ASSISTED BALL MILLING(2018-12-01); ; Active-ilmenite powder derived from natural ilmenite sand was prepared by the ball milling process with acid-solution and Deionized (DI) water. Morphology and particle size of active-ilmenite product in acid/DI-assisted ball milling process were monitored by field emission scanning electron microscope (FE-SEM) and transmission electron microscope (TEM). Surface atomic component and chemical bonding were investigated by X-ray photoelectron spectroscopy (XPS). Meanwhile, bulk chemical oxidation and fine structure of active-ilmenite were studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption ne-structure spectroscopy (EXAFS) to confirm the oxidation state and local active species structure at surface. Active-ilmenite by acid-assisted ball milling process is a distinctive method for the preparation of active-ilmenite product with high active surface. Moreover, the distortion of TiO <inf>6</inf> and FeO <inf>6</inf> octahedral cluster on the sample surface was detected in all milled samples with acid-assisted ball milling process. The presence of Fe <sup>2+</sup> , Fe <sup>3+</sup> ions and miniature sulfate was also detected on the sample surface by milled product with acid-assisted method. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optical characteristics of samarium doped ZnAl2O4 nanomaterials synthesized by vibrational milling process(2018-01-01); ; ; Ishihara, Keiichi N.Optical and fluorescence properties of samarium (Sm) doped zinc aluminate host matrix (Sm:ZnAl<inf>2</inf>O<inf>4</inf>) was studied. Sm:ZnAl<inf>2</inf>O<inf>4</inf> nanopowder was synthesized by vibrational milling process assisted with calcination treatment. Structural and optical properties of Sm:ZnAl<inf>2</inf>O<inf>4</inf> nanopowders were investigated via the crucial parameter of different doping concentration. Structural properties of as-synthesized samples and Sm: ZnAl<inf>2</inf>O<inf>4</inf> powders were characterized by X-ray diffraction and scanning electron microscope. For optical properties, Sm: ZnAl<inf>2</inf>O<inf>4</inf> phosphor materials were analyzed via diffuse reflectance and photoluminescence spectroscopy. The preliminary results suggested that Sm: ZnAl<inf>2</inf>O<inf>4</inf> powders were identically in spinel crystalline phase as host ZnAl<inf>2</inf>O<inf>4</inf> structure affirmed by XRD result. SEM images indicated the Sm:ZnAl<inf>2</inf>O<inf>4</inf> after the synthesis distinctly obtained in ultrafine power due to the effect of several milling round and sintering process. The optical properties in reflectance mode of Sm:ZnAl<inf>2</inf>O<inf>4</inf> samples were significantly increased by the presence of Sm dopant in ZnAl<inf>2</inf>O<inf>4</inf> structure. Meanwhile, the luminescent materials showed red emissions under visible light excitation in range of 650-730 nm by PL spectra. The improvement of ZnAl<inf>2</inf>O<inf>4</inf> photoluminescence property was obviously obtained at 0.5 wt.% Sm due to photon transfer from Sm to host material. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, TiO2 Hybridized with Natural Ilmenite Nanocomposites for Enhanced Visible Light Photocatalytic Activity(2019-09-16); The activated ilmenite nanocomposite of TiO<inf>2</inf> hybridized were prepared by natural ilmenite and commercial TiO<inf>2</inf> anatase assembled using sugar as cross-link agents and carbon source. The heterostructure interface of anatase-ilmenite junction, crystallinity and chemical state were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy and X-ray photoelectron spectroscopy (XPS). Composite morphologies and structures were investigated by scanning electron microscope (SEM). Synergistic of low energy gap in range of visible light and interfacial charge separate from TiO2 to ilmenite junction was evaluated in photocatalytic degradation of organic dye. The result from visible light catalytic dye degradation suggests that narrow bandgap energy is associated to ilmenite phase and sensitization by carbon with low recombination rate of generated electron-hole pair transfer. This mechanism occurred by multiphase junction could enhance visible light photocatalytic activity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electrochemical properties of nanopowders derived from ilmenite and leucoxene natural minerals(2017-08-01); Ilmenite and leucoxene nanopowders were prepared by ball milling process. Phase structure, surface and particle morphology transformation by ball milling were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), Transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Synchrotron X-Ray absorption near edge structure (XANES) spectra was conducted to investigate detailed local structures and oxidation states of prepared powders. Electrochemical properties of the prepared samples were performed using cyclic voltammetry (CV). The prepared leucoxene nanoparticles exhibit feasibility as applicable material for supercapacitor electrode according to significantly improved electrochemical properties with good cycling performance and high capacitance.