Photocatalytic Degradation of Methylene Blue in Presence of Graphene Oxide/TiO2 Nanocomposites

被引：15
作者：
Kim, Sung Phil
Choi, Hyun Chul [1 ]
机构：
[1] Chonnam Natl Univ, Dept Chem, Kwangju 500757, South Korea
来源：
BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2014年 / 35卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
Thiolated graphene oxide; GO-TiO2; Photocatalyst; Methylene blue; HYDROTHERMAL SYNTHESIS; TIO2; PHOTODEGRADATION; DYES; COMPOSITES; REDUCTION; HYBRID;
D O I：
10.5012/bkcs.2014.35.9.2660
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：2660 / 2664
页数：5
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