Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 35, Issue 9, Pages 2660-2664Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2014.35.9.2660
Keywords
Thiolated graphene oxide; GO-TiO2; Photocatalyst; Methylene blue
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Funding
- Basic Science Research Program through National research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2010-0003963]
- National Research Foundation of Korea [2010-0003963] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A simple method of depositing titanium dioxide (TiO2) nanoparticles onto graphene oxide (GO) as a catalytic support was devised for photocatalytic degradation of methylene blue (MB). Thiol groups were utilized as linkers to secure the TiO2 nanoparticles. The resultant GO-supported TiO2 (GO-TiO2) sample was characterized by transmission electron microscopy (TEM), near-edge X-ray absorption fine structure (NEXAFS), and X-ray photoelectron spectroscopy (XCPS) measurements, revealing that the anatase TiO2 nanoparticles had effectively anchored to the GO surface. In the photodegradation of MB, GO-TiO2 exhibited remarkably enhanced photocatalytic efficiency compared with thiolated GO and pure TiO2 nanoparticles. Moreover, after five-cycle photodegradation experiment, no obvious deactivation was observed. The overall results showed that thiolated GO provides a good support substrate and, thereby, enhances the photodegradation effectiveness of the composite photocatalyst.
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