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1篇 您的检索式:作者名="Kayla J.Pyper"
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1Synthesis of a-SnWO_4 thin-film electrodes by hydrothermal conversion from crystalline WO_3显示文摘Thin film electrodes of the orthorhombic form of tin tungstate(a-SnWO4) were prepared using a hydrothermal method to convert thin films of WO3 in aqueous Sn Cl2.The p H dependence of the growth mechanism was identified by scanning electron microscopy(SEM) and X-ray diffraction(XRD).The XRD patterns show complete conversion of WO3(s) to SnWO4(s) at p H 1,4,and 7.SEM images reveal a morphology change from sponge-like platelets to sharp nanowires as the p H increases from 1 to 7.The a-SnWO4 thin films were reddish brown in color,and display an indirect band gap of 1.9 e V by diffuse reflectance UV–vis spectroscopy.a-SnWO4 is therefore solar-responsive,and a chopped light linear sweep voltammogram recorded under 100 m W/cm2AM1.5 simulated solar illumination in a p H 50.1 mol/L KPibuffer show a visible light response for photoelectrochemical water oxidation,producing32 m A/cm2 at 1.23 V vs.RHE.Kayla J.Pyper Taylor C.Evans Bart M.Bartlett 2015Chinese Chemical Letters2015,26,4:1
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