Ligand-Free One-Step Synthesis of {001} Faceted Semiconducting BiOCl Single Crystals and Their Photocatalytic Activity

Herein,
we report one-step ligand-free hydrothermal synthesis of
predominantly {001}-faceted micron-sized single crystals of bismuth
oxychloride (BiOCl). The structural chlorine is obtained by in situ
generation of chloride ions. From Raman spectra, we could resolve
the Eg transition. Photocatalytic activity of as-synthesized
crystals showed 78% degradation of RhB dye under a xenon source after
120 min of exposure.

本工作报道了一种无配体一步水热合成法，可制备主要暴露{001}晶面的微米级氯氧化铋（BiOCl）单晶。该晶体结构中的氯元素通过氯离子原位生成途径获得。通过拉曼光谱表征，我们成功解析了Eg跃迁。所制备晶体的光催化活性测试结果表明，在氙灯光源照射120分钟后，可使罗丹明B（RhB）染料实现78%的降解率。