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Sulawan Kaowphong Titipun Thongtem Somchai Thongtem 《Russian Journal of Inorganic Chemistry》2010,55(4):577-582
Micro-crystalline PbWO4 was sonochemically produced using Pb(CH3COO)2 · 3H2O and Na2WO4 · 2H2O in aqueous solutions with and without anionic surfactant (sodium dodecyl sulphate or sodium lauryl sulphate). The product morphologies were influenced by the pH values and the surfactant. Micro-crystalline PbWO4 composing of Pb, W and O, and W-O stretching vibration band of WO4 tetrahedrons were detected using XRD, SEM, EDX, TEM, SAED and FTIR. Photoluminescent intensities, caused by the electronic transition from 1T2 to 1A1 states, shown to increase with the increase in the pH values of the solutions. 相似文献
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Pranwadee Kaewmuang Thongtem Titipun Thongtem Somchai Kittiwachana Sila Kaowphong Sulawan 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2018,92(9):1777-1781
Russian Journal of Physical Chemistry A - Nanosized NiO particles were synthesized by a combined solvothermal-calcination process using Ni(NO3)2 · 6H2O as a starting reagent in the presence of... 相似文献
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Maisang Wachiraporn Promnopas Surin Kaowphong Sulawan Narksitipan Suparut Thongtem Somchai Wannapop Surangkana Phuruangrat Anukorn Thongtem Titipun 《Research on Chemical Intermediates》2020,46(4):2117-2135
Research on Chemical Intermediates - BiOBr/BiOCl flowerlike composites were successfully synthesized in different solutions containing 0.00–1.50 g polyvinylpyrrolidone (PVP) by... 相似文献
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AWO4 (A = Ca, Sr) was prepared from metal salts [Ca(NO3)2·4H2O or Sr(NO3)2], Na2WO4·2H2O and different moles of cetyltrimethylammonium bromide (CTAB) in water by cyclic microwave irradiation. The structure of AWO4 was characterized by X-ray diffraction (XRD) and selected area electron diffraction (SAED). Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) revealed the presence of nanoparticles in clusters with different morphologies; spheres, peaches with notches, dumb-bells and bundles, influenced by CTAB. Six Raman vibrational peaks of scheelite structure were detected at 908, 835, 793, 399, 332 and 210 cm−1 for CaWO4 and 917, 833, 795, 372, 336 and 192 cm−1 for SrWO4, which are assigned as ν1(Ag), ν3(Bg), ν3(Eg), ν4(Bg), ν2(Ag) and νf.r.(Ag), respectively. Fourier transform infrared (FTIR) spectra provided the evidence of W-O stretching vibration in [WO4]2− tetrahedrons at 793 cm−1 for CaWO4 and 807 cm−1 for SrWO4. The peaks of photoluminescence (PL) spectra were at 428-434 nm for CaWO4, and 447-451 nm for SrWO4. 相似文献
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