论文标题
通过低能顺序磨制的纯cubi2O4光电阴道材料的平均自上而下的合成
A facile top-down synthesis of phase pure CuBi2O4 photocathode materials by low-energy sequential ball milling
论文作者
论文摘要
kusachiite（氧化铜）是高太阳能到氢生产效率的最有希望的光电座材料之一。在这里，我们尝试使用一种简单的固态反应技术合成相纯铜二氧化碳（CUBI2O4）纳米植物，随后在750 0C烧结了4 h。这些Cubi2O4（CBO）粉末已被依次进一步地磨碎（SBM），直至25小时，以阐明铣削持续时间效应对球麦片Cubi2O4（SBM-CBO）的光带量。 X射线衍射法（XRD），拉曼，X射线光电子光谱（XPS）和UV-VIS-NIR弥漫性反射研究表明，可以从RAW CUO和BI2O3 POUDERS中生长相纯四方CBO。分别使用现场发射扫描电子显微镜（FE-SEM）和能量分散X射线（EDX）微分析研究了CBO随CBO的形态和化学组成的变化。 SBM-CBO粉末的光带隙在大约约为范围内测量。 1.70-1.85 ev。用Na2SO4电解质水的屏幕打印电极上的SBM-CBO浆液的光电化学研究表明，其适用性是用于阳光驱动的氢产生的光电座材料。
Kusachiite (copper bismuth oxide) is one of the most promising photocathode materials for high solar-to-hydrogen production efficiency. Here we attempt to synthesize phase pure copper bismuth oxide (CuBi2O4) nanopowders using a facile solid-state reaction technique, subsequently sintered at 750 0C for 4 h in air. These CuBi2O4 (CBO) powders have been further sequentially ball-milled (SBM) up to 25 h to elucidate the milling duration effect on the optical bandgap of the ball-milled CuBi2O4 (SBM-CBO). The X-ray diffractometry (XRD), Raman, X-ray Photoelectron spectroscopy (XPS), and UV-VIS-NIR Diffuse reflection studies suggest that phase pure tetragonal CBO could be grown from raw CuO and Bi2O3 powders. The variations in morphology and chemical composition of CBO with increasing milling hours were examined using field emission scanning electron microscopy (FE-SEM) and Energy Dispersive X-ray (EDX) microanalysis, respectively. The optical bandgap of SBM-CBO powders was measured in the range of approx. 1.70 - 1.85 eV. Photoelectrochemical studies of SBM-CBO slurry atop the screen-printed electrode with aqueous Na2SO4 electrolyte suggest its suitability as photocathode materials for sunlight-driven hydrogen production.
