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首页> 外文期刊>Separation and Purification Technology >Graphitic carbon nitride quantum dots and nitrogen-doped carbon quantum dots co-decorated with BiVO4 microspheres: A ternary heterostructure photocatalyst for water purification
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Graphitic carbon nitride quantum dots and nitrogen-doped carbon quantum dots co-decorated with BiVO4 microspheres: A ternary heterostructure photocatalyst for water purification

机译：用BIVO4微球共装配石墨碳氮化物量子点和氮掺杂碳量子点：水净化的三元异性结构光催化剂

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摘要

In this study, a ternary heterostructure photocatalyst was synthesized by co-anchoring the graphitic carbon nitride quantum dots (CNQDs) and nitrogen-doped carbon quantum dots (NCDs) on the surface of BiVO4 microspheres. The as-synthesized BiVO4/CNQDs/NCDs ternary heterostructure exhibits the excellent photo catalytic activity for degradation of rhodamine B (RhB, dye) and tetracycline (TC, antibiotic) under visible-light illumination. Eventually, it is found that the BiVO4/CNQDs/NCDs shows the much better photoreactivity both for RhB and TC degradation in comparison with that of pure BiVO4, BiVO4/CNQDs, and BiVO4/NCDs samples, respectively. The improvement of photocatalytic performance is due to the efficient separation and transport of photogenerated charge carriers, resulting in formation of a ternary heterostructure system. This work will be useful for the construction of other ternary heterostructure photocatalysts application in waste water purification.
机译：在该研究中，通过在BIVO4微球表面上将石墨氮化碳量子点（CNQDS）和氮气掺杂的碳量子点（NCD）共锚定，合成三元异性结构光催化剂。 作为合成的BIVO4 / CNQDS / NCDS三核异质结构表现出优异的光照活性，用于在可见光照射下罗丹明B（RHB，染料）和四环素（TC，抗生素）降解的优异光催化活性。 最终，发现BIVO4 / CNQDS / NCDS分别与纯BIVO4，BIVO4 / CNQDS和BIVO4 / NCDS样品的比较，表明BIVO4 / CNQDS / NCDs均显示RHB和TC劣化的更好的光反应性。 光催化性能的提高是由于光源性电荷载流子的有效分离和运输，导致形成三元异性结构系统。 这项工作对于在废水净化中构建其他三元异性结构光催化剂应用。

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