期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 201, 期 -, 页码 470-478出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2016.08.056
关键词
Electrospinning; Nanocomposites; TiO2/GO; Photocatalysis; Nanofibers
资金
- State Key Laboratory for Modification of Chemical Fibers
- Polymer Materials, Donghua University [LK1518]
- School Funds of Shanghai Second Polytechnic University [EGD15XQD05]
- Young College Teachers' Training Scheme of Shanghai [ZZZZEGD15013]
- Natural Science Foundation of Shanghai [16ZR1412600, 15ZR1416900]
- Natural Science Foundation of China [51572046, 51503035]
- Science and Technology Commission of Shanghai [13JC1400200]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Program of Introducing Talents of Discipline to Universities [111-2-04]
- Shanghai Eastern Scholarship program
The present study reports the electrospun one-dimensional TiO2/graphene oxide (GO) composite nanofibers photocatalysts using polyvinylpyrrolidone (PVP) as a fiberizing carrier. Continuous TiO2 nanofibers segregated by the well-dispersed GO with the content even high as 5 wt% were obtained after the carrier PVP was burnt away at 500 degrees C. The observed lower excitonic intensity from photoluminescent study in the TiO2/GO samples than that in bare TiO2 nanofibers indicated that the recombination of photoinduced electrons and holes in TiO2 could be effectively inhibited in the composite nanofibers. Photocatalytic studies suggested that the TiO2/GO composite nanofibers showed higher mobility of charge carriers and enhanced photocatalytic activity than bare TiO2 nanofibers under visible light irradiation. In addition, photocatalytic performance of the TiO2/GO composites nanofibers was enhanced with increasing the GO concentration in the composite nanofibers. The results presented herein provide new insights into TiO2/GO composites materials as high performance photocatalysts with potential uses in environmental remediation. (C) 2016 Elsevier B.V. All rights reserved.
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