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Nanostructured Bi 2 S 3 was hydrothermally produced from Bi 2 O 3 and thiocarbohydrazide in acidic solutions containing PVA, PEG and PVP. By using XRD, SAED and Raman spectrometry, the products were orthorhombic Bi 2 S 3 , with four vibration modes at 139.6, 253.7, 310 and 968.9cm −1 . The phase was also in accordance with the diffraction patterns...
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