Novel CuInS₂ quantum dots (CIS-QDs)/Bi₂WO₆ 3D composites were successfully synthesized through a facile deposition process, followed by low temperature calcination. The ternary p-type CIS-QDs were highly dispersed onto the surface of flower-like n-type Bi₂WO₆ nanosheets to form p-n heterojunction and simultaneously tune the behaviors of photogenerated charge carriers, resulting in higher photocatalytic efficiencies of toluene degradation and Cr(VI) reduction under visible light irradiation, which are 3.0 and 8.5 times higher than those of Bi₂WO₆, respectively. The photoelectrochemical investigations indicate that the introduction of CIS-QDs synergistically enhanced the harvesting efficiency of solar energy in the p-n heterojunction system with the internal electric field and reduced transfer barrier of photoinduced charge carriers by forming the unique Bi-S bonds between the CIS-QDs and flower-like Bi₂WO₆.

中文翻译：

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嵌入Bi ₂ WO ₆纳米花中的CuInS ₂量子点用于增强可见光光催化去除污染物

通过简便的沉积过程，然后进行低温煅烧，成功合成了新型CuInS ₂量子点（CIS-QDs）/ Bi ₂ WO ₆ 3D复合材料。三元p型CIS-QDs高度分散在花状n型Bi ₂ WO ₆纳米片的表面上以形成pn异质结，同时调节光生电荷载体的行为，从而提高了甲苯降解和Cr的光催化效率。 （VI）在可见光照射下的还原，其比Bi ₂ WO _6的还原高3.0和8.5倍， 分别。光电化学研究表明，CIS-QDs的引入通过内部电场增强了pn异质结系统中太阳能的收集效率，并通过在CIS-QDs之间形成独特的Bi-S键降低了光诱导电荷载流子的传输势垒。和花状的Bi ₂ WO ₆。