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WO3-ZnO and CuO-ZnO nanocomposites as highly efficient photoanodes under visible light illumination

机译:WO3-ZnO和CuO-ZnO纳米复合材料作为可见光照明下的高效光池

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We prepared ZnO nanocomposites with WO3 or CuO nanostructures to improve the photocatalytic performance of ZnO nanostructures. Characterization of the nanocomposites using scanning electron microscopy, x-ray diffraction, UV-vis spectrometry and photoluminescence revealed the morphologies and wide light absorption range of the materials. The highest current densities of WO3/ZnO and CuO/ZnO nanocomposites were 1.28 mA cm(-2) and 2.49 mA cm(-2) at 1.23 V (versus a reversible hydrogen electrode) under AM 1.5 100 mW cm(-2), which are similar to 1.2- and 3.5-fold greater than those of bare ZnO nanostructures, respectively. The easy fabrication process suggests that nanocomposites with narrow bandgap materials, such as WO3 and CuO, will improve the performance of electrochemical and optoelectrical devices such as dye-sensitized solar cells and biosensors.
机译:我们用WO3或CuO纳米结构制备ZnO纳米复合材料,以改善ZnO纳米结构的光催化性能。 使用扫描电子显微镜,X射线衍射,UV-Vis光谱法和光致发光表征纳米复合材料揭示了材料的形态和宽光吸收范围。 WO3 / ZnO和CuO / ZnO纳米复合材料的最高电流密度为1.28mAcm(-2)和2.49 mA cm(-2),在am 1.5 100 mw cm(-2)下,1,20mm(与可逆氢电极)。 这与比裸ZnO纳米结构的1.2-和3.5倍相似。 易于制造过程表明,具有窄带隙材料的纳米复合材料,例如WO3和CUO,将改善电化学和光电装置的性能,例如染料敏化的太阳能电池和生物传感器。

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