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Sci Rep. 2017 Mar 13;7:44338. doi: 10.1038/srep44338.

Efficient Photocatalytic Bilirubin Removal over the Biocompatible Core/Shell P25/g-C3N4 Heterojunctions with Metal-free Exposed Surfaces under Moderate Green Light Irradiation.

Author information

1
Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
2
School of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou, 213001, China.
3
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
4
Department of Ultrasound in Medicine, Shanghai Jiao tong University Affiliated Sixth People's Hospital, Shanghai Institute of Ultrasound in Medicine, Shanghai 200233, China.

Abstract

Highly-monodispersed g-C3N4/TiO2 hybrids with a core/shell structure were synthesized from a simple room temperature impregnation method, in which g-C3N4 was coated through self-assembly on the commercially available Degussa P25 TiO2 nanoparticles. Structural and surface characterizations showed that the presence of g-C3N4 notably affected the light absorption characteristics of TiO2. The g-C3N4/TiO2 heterojunctions with metal-free exposed surfaces were directly used as biocompatible photocatalysts for simulated jaundice phototherapy under low-power green-light irradiation. The photocatalytic activity and stability of g-C3N4/TiO2 were enhanced relative to pure P25 or g-C3N4, which could be ascribed to the effective Z-scheme separation of photo-induced charge carriers in g-C3N4/TiO2 heterojunction. The photoactivity was maximized in the 4 wt.% g-C3N4-coated P25, as the bilirubin removal rate under green light irradiation was more than 5-fold higher than that under the clinically-used blue light without any photocatalyst. This study approves the future applications of the photocatalyst-assisted bilirubin removal in jaundice treatment under moderate green light which is more tolerable by humans.

PMID:
28287189
PMCID:
PMC5347124
DOI:
10.1038/srep44338
[Indexed for MEDLINE]
Free PMC Article

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