Thongkam, Montree
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Item type:Publication, Optical properties of Cu0.95Pt0.05Fe0.97Sn0.03O2 for p-type transparent conducting oxide materials(2013-08-30); ; ; The Cu<inf>0.95</inf>Pt<inf>0.05</inf>Fe<inf>0.97</inf>Sn<inf>0.03</inf>O<inf>2</inf> sample has been synthesized by a solid-state reaction to investigate optical properties of materials of transparent conducting oxide. Crystal structure was characterized by XRD. The Seebeck coefficient and electrical conductivity were measured in the high temperature (300 to 860 K), while the XPS and UV-VIS-NIR spectra were analyzed at room temperature. The XRD peaks confirm the samples forming the delafossite structure phase. The Seebeck coefficient reveals the samples displays the p-type conducting. The XPS spectra show the Sn2+ state stabling in this compound. The optical direct gap is 3.45 eV as a visible-transparent material. These results support that the Cu<inf>0.95</inf>Pt<inf>0.05</inf>Fe<inf>0.97</inf>Sn<inf>0.03</inf>O<inf>2</inf> oxide compounds, of which the Cu<sup>1+</sup> and Fe<sup>3+</sup> sites are substituted by the Pt<sup>1+</sup> and Sn<sup>2+</sup> ions respectively, are p-type transparent conducting oxide materials. © (2013) Trans Tech Publications, Switzerland. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electrical and optical properties of p-type CuFe1-xSn xO2 (x = 0.03, 0.05) delafossite-oxide(2013-01-14); ; ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A simple route to synthesize ferromagnetic binary calcium iron pyrophosphate CaFeP2O2 using aqueous-acetone media(2013-08-30); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Facile, alternative synthesis of spherical-like ca(H2PO4)2•H2O nanoparticle by aqueous-methanol media(2013-08-30); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A new synthesis of BaHPO4 precipitated by BaCO3-H4PO4-NaOH system at room temperature(2013-08-30); ; ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A simple route to synthesize new binary cobalt iron cyclotetraphosphate CoFeP4O12 using aqueous and acetone media(2009-11-03); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Extraction of Chitin, Chitosan, and Calcium Acetate from Mussel Shells for Sustainable Waste Management(2025-08-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Non-isothermal decomposition kinetics of synthetic serrabrancaite (MnPO4 · H2O) precursor in N2 atmosphere(2010-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Kinetics and thermodynamics of the formation of MnFeP4O 12(2010-01-14); The kinetics and thermodynamics of dehydration and intermolecular polycondensation reactions of Mn<inf>1/2</inf>Fe<inf>1/2</inf>(H <inf>2</inf>PO<inf>4</inf>)<inf>2</inf> ·H<inf>2</inf>O and Mn <inf>1/2</inf>Fe<inf>1/2</inf>(H<inf>2</inf>PO<inf>4</inf>)<inf>2</inf> were studied under nonisothermal heating by thermogravimetry (TG). On the basis of three calculation procedures and 24 kinetic mechanism functions, kinetic triplets (E, A, kinetic model) using the Arrhenius equation were calculated for both processes. The comparison of the results obtained with these calculation procedures show a strong dependence on the selection of the mechanism function for the process. The thermodynamic functions (ΔH*, C<inf>p</inf>, ΔG*, and ΔS*) of both reactions are calculated from differential scanning calorimetry (DSC) experiments. Kinetic and thermodynamic results indicate that the polycondensation step has a lower rate and is a stronger reaction than the dehydration step and corresponds to the breaking of the strong hydrogenbonded P-OH group, in connection with the polycondensation reaction, which confirms that the decomposition product (manganese iron cyclotetraphosphate, MnFeP<inf>4</inf>O<inf>12</inf>) was obtained. © 2010 American Chemical Society. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Simple and Rapid Synthesis of Calcium Acetate from Scallop Shells to Reduce Environmental Issues(2021-01-01); ; ; Chaiseeda, KittichaiThe search for sustainable resources remains a subject of global interest. Calcium acetate used in many fields was prepared using waste scallop shell as a raw material, and its physicochemical properties were investigated. The waste scallop shells were transformed to calcium acetate compounds by reactions with four acetic acid concentrations at ambient temperature until the completely dried powder is obtained. The maximum yield of 87% with short reaction time at a low temperature was observed in the reaction of 60%w/w acetic acid with scallop shells. Thermal transformation reactions of all prepared calcium acetate samples revealed temperature conditions for heating to produce other advanced materials. FTIR and XRD results confirmed the purity and solid phase of all prepared calcium acetate samples, and they were compared with those of literatures and found to be well consistent. The obtained timber-like particles have different sizes depending on the acetic acid concentration. This work reports an easy and low-cost method with no environmental effect to produce cheap calcium products to be used in the industry.1