纳米片
光催化
纳米复合材料
污染物
罗丹明B
化学工程
材料科学
降级(电信)
辐照
纳米颗粒
矿化(土壤科学)
化学
催化作用
纳米技术
有机化学
计算机科学
氮气
工程类
物理
核物理学
电信
作者
Zhenwei Tong,Dong Yang,Tianxiong Xiao,Yao Tian,Zhongyi Jiang
标识
DOI:10.1016/j.cej.2014.08.072
摘要
A facile and efficient approach was first developed to prepare g-C3N4/TiO2 nanocomposites by combining the arginine-enabled biomimetic mineralization of TiO2 with the thermal oxidation etching of bulk g-C3N4. The resultant g-C3N4/TiO2 nanocomposites exhibit a well-defined morphology, in which TiO2 nanoparticles about 5.5 nm in diameter are uniformly distributed on the g-C3N4 nanosheet. They exhibit higher degradation efficiency for Rhodamine B (RhB) than TiO2, g-C3N4 and their mixture under visible light and simulated-sunlight irradiation. In all the as-prepared samples, the g-C3N4/TiO2 nanosheet with 25.9 wt% of g-C3N4 exhibits the highest photocatalytic efficiency, which can degrade almost all RhB under simulated-sunlight irradiation within 50 min. The synergistic effect between TiO2 and g-C3N4 plays an important role for the enhanced photocatalytic activity of g-C3N4/TiO2 nanosheets. This kind of sheet-like nanocomposites may find the potential application for the photocatalytic degradation of organic pollutants.
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