Synthesis and photocatalytic performance of novel metal-free g-C3N4 photocatalysts
Synthesis and photocatalytic performance of novel metal-free g-C3N4 photocatalysts
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新型无金属g-C3N4光催化剂的合成及光催化性能
DOI：
10.1016/j.matlet.2011.05.069
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发表时间：
2011-09-01
影响因子：
3
通讯作者：
Ge, Lei
中科院分区：
文献类型：
--
作者：
Ge, Lei
以三聚氰胺为前驱体，在不同温度下加热，合成了新型的浅黄色无金属g-C3 N4光催化剂。采用X射线衍射（XRD）、透射电镜（TEM）和紫外-可见漫反射光谱（DRS）对产物进行了表征。以可见光照射下苯酚的分解为基础，考察了焙烧温度对g-C3 N4样品光催化活性的影响。DRS光谱表明，g-C3 N4在可见光区有较强的吸收。结果表明，在520 ℃下热处理4 h，样品的苯酚降解率最高，达到92.5%。本研究为开发新型的无金属可见光催化剂降解有机污染物提供了一种途径。(C)2011 Elsevier BM. All rights reserved.
Novel metal-free g-C3N4 photocatalysts with light yellow colors were synthesized by heating melamine precursor at different temperatures. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectra (DRS). The effect of calcining temperatures on photocatalytic activities of g-C3N4 samples were investigated based on the decomposition of phenol under visible light irradiation. The DRS spectra revealed that the g-C3N4 had strong absorption in the visible light region. The photocatalytic results indicated that the highest phenol degradation of 92.5% was achieved on the samples heated at 520 degrees C for 4 h. This study may provide an approach to development of novel metal-free photocatalysts to degrade organic pollutants by using visible light. (C) 2011 Elsevier BM. All rights reserved.