Enhanced Photocatalytic Activity of the Carbon Quantum Dot-Modified BiOI Microsphere

Novel carbon quantum dot (CQD)-modified BiOI photocatalysts were prepared via a facile hydrothermal process. The CQD-modified BiOI materials were characterized by multiple techniques. The CQD with an average size around several nanometers was distributed on the surface of BiOI microsphere. Its photo...

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Detalles Bibliográficos
Autores principales: Chen, Yuan, Lu, Qiuju, Yan, Xuelian, Mo, Qionghua, Chen, Yun, Liu, Bitao, Teng, Liumei, Xiao, Wei, Ge, Liangsheng, Wang, Qinyi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4740481/
https://www.ncbi.nlm.nih.gov/pubmed/26842793
http://dx.doi.org/10.1186/s11671-016-1262-7
Descripción
Sumario:Novel carbon quantum dot (CQD)-modified BiOI photocatalysts were prepared via a facile hydrothermal process. The CQD-modified BiOI materials were characterized by multiple techniques. The CQD with an average size around several nanometers was distributed on the surface of BiOI microsphere. Its photocatalytic activity was investigated sufficiently by the photodegradation of methylene orange (MO). The results showed that the CQD/BiOI 1.5 wt.% sample exhibited the optimum photocatalytic activity, which was 2.5 times that of the pure BiOI. This improvement was attributed to the crucial role of CQDs, which could be acted as a photocenter for absorbing solar light, charge separation center for suppressing charge recombination. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s11671-016-1262-7) contains supplementary material, which is available to authorized users.

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