期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 455, 期 -, 页码 101-109出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2015.05.046
关键词
Carbon quantum dots; Zinc oxide; Dyes; Photocatalyst; Degradation; Daylight
资金
- National Research Foundation of South Korea (NRF) - Ministry of Science, ICT & Future Planning [2013R1A2A2A07067688, 2010-0019626]
- National Research Foundation of Korea [2013R1A2A2A07067688, 22A20130000046] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Eco-friendly carbon quantum dots/nitrogen-doped ZnO (CQD/N-ZnO) composites were successfully prepared by a facile one-step method. The various techniques were employed to characterize the phase structure, morphology and optical properties of CQD/N-ZnO composites. The nitrogen doping was confirmed by Raman and X-ray photoelectron spectroscopy. Three commercial dyes, such as malachite green, methylene blue and fluorescein dyes were chosen to investigate the photocatalytic performance of CQD/N-ZnO under daylight irradiation. It was found that the CQD/N-ZnO photocatalyst established a high compatibility to degrade all three commercial dyes within 30-45 min, under daylight irradiation. Also, it remains capable of reusing the CQD/N-ZnO photocatalyst for repeated photocatalytic performance due to anti-photocorrosion offered by CQDs. The synergetic effect of N-doping and CQDs is key to design a new class of photocatalyst for environmental remediation under naturally available daylight source. (C) 2015 Elsevier Inc. All rights reserved.
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