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Ammonium thiotungstate (ATT), (NH4)2WS4, is prepared by a new method using (NH4)2S, and compared with ATT obtained by conventional sulfidation with H2S(g). The XRD spectra of both samples are very similar to the simulated spectrum of ATT. UV–Vis and FT-IR spectra of both samples have characteristic bands for ATT. SEM micrographs show a similar morphology between the samples. TGA-DTA curves of both...
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