Tungsten oxide hydrate (WO₃·H₂O) nanoparticle and Iron tungstate/tungsten oxide (Fe₂WO₆/WO₃) nanocomposite have been synthesized via a facile hydrothermal route. Structural, optical, morphological and electrical properties of the synthesized samples were characterized by X-ray powder diffraction (XRD), UV-Visible spectroscopy, Field effect scanning electron microscopy (FE-SEM) with Energy-dispersive X-ray spectroscopy (EDX) and DC electrical conductivity measurement respectively. The powder X-ray diffraction (XRD) results confirm the formation of Fe₂WO₆/WO₃ nanocomposite. Variation in the electrical conductivity and activation energy was studied by DC electrical conductivity studies. Fe₂WO₆/WO₃ nanocomposites show a significant enhancement in the degradation of methyl blue than WO₃·H₂O nanoplates. The significant enhancement was due to flower-like morphology and the narrowing of the optical band gap which reduces the electron-hole pair recombination rate. The dye-sensitized solar cell (DSSC) was fabricated using WO₃·H₂O and Fe₂WO₆/WO₃ films as photoanodes and it was observed that Fe₂WO₆/WO₃ photoanode shows highest power conversion efficiency (PCE) i.e., 4.69% which can be achieved through high dye absorbing capacity.

中文翻译：

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像花的Fe 2 WO 6 / WO 3接触层的增强的光伏和光催化活性

氧化钨水合物（WO ₃ ·H ₂ O）纳米粒子和钨酸钨/氧化钨（Fe ₂ WO ₆ / WO ₃）纳米复合物是通过一种简便的水热途径合成的。通过X射线粉末衍射（XRD），紫外可见光谱，具有能量色散X射线光谱（EDX）的场效应扫描电子显微镜（FE-SEM）表征了合成样品的结构，光学，形态和电学性质和直流电导率测量。粉末X射线衍射（XRD）结果证实了Fe ₂ WO ₆ / WO _3的形成纳米复合材料。通过直流电导率研究来研究电导率和活化能的变化。与WO ₃ ·H ₂ O纳米板相比，Fe ₂ WO ₆ / WO ₃纳米复合材料在甲基蓝的降解中表现出显着增强。显着增强是由于花状形态和光学带隙变窄，从而降低了电子-空穴对的重组率。使用WO ₃ ·H ₂ O和Fe ₂ WO ₆ / WO ₃膜作为光阳极制备染料敏化太阳能电池（DSSC），并观察到Fe ₂ WO ₆/ WO ₃光电阳极显示出最高的功率转换效率（PCE），即4.69％，可通过高染料吸收能力实现。