Abstract Hierarchical microspherical-like BiOCl structure was synthesized by solvothermal method. The BiOCl was characterized by different techniques, such as: X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS) and photoluminescence spectroscopy (PL); as well, the pore distribution and the surface area were determined by BET method. It was found that the conditions of synthesis employed in this work allow to obtain of microspherical-like BiOCl structure with abundant oxygen vacancies. The vacancies of the oxygen promote the photoactivity of BiOCl under sunlight. Also, the photocatalytic mechanism under sunlight was studied by trapping experiments of reactive species, where it was showed that the holes (h+) and superoxide (O2•-) are the main active species in the degradation of RO84 and ACT. As a result, microspherical-like BiOCl structure, is an exceptional photocatalyst in degradation of the RO84 and ACT under sunlight.

中文翻译：

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合成氯氧化铋 (BiOCl) 微球结构对日光降解活性橙 84 染料的影响

摘要 采用溶剂热法合成了多级微球状BiOCl结构。BiOCl 通过不同的技术进行表征，例如：X 射线衍射 (XRD)、扫描电子显微镜-能量色散 X 射线光谱 (SEM-EDS)、透射电子显微镜 (TEM)、X 射线光电子能谱 (XPS) ，紫外可见漫反射光谱（DRS）和光致发光光谱（PL）；同样，孔分布和表面积通过BET方法确定。发现在这项工作中使用的合成条件允许获得具有丰富氧空位的微球状 BiOCl 结构。氧的空位促进了 BiOCl 在阳光下的光活性。此外，还通过活性物种的捕获实验研究了阳光下的光催化机理，结果表明，空穴（h+）和超氧化物（O2•-）是降解 RO84 和 ACT 的主要活性物质。因此，微球状 BiOCl 结构是在阳光下降解 RO84 和 ACT 的特殊光催化剂。