摘要
以三聚氰胺和碳酸氢铵混合物为原料,采用简便热解法制备g-C_3N_4纳米管。热解过程中碳酸氢铵分解释放出大量的NH3,能够诱导纳米管的形成。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)、N_2吸附-脱附、紫外-可见漫反射光谱以及紫外可见光谱(UV)等分析测试方法对该光催化剂的微观形貌结构和催化性能进行了表征。以罗丹明光催化降解为模型反应研究了g-C_3N_4纳米管的光催化活性。g-C_3N_4纳米管的表面积明显增大,且能够有效地促进光生电子转移,在可见光下具有较强的光催化性能,降解率在60和120 min时分别能达到95%和99.4%,且循环重复利用5次后降解率不低于92%。
g-C3N4 nanotubes were prepared by pyrolysis of a mixture of melamine and ammonium bicarbonate via a simple and convenient method. The morphology and catalytic properties of the photocatalysts were characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, infrared spectroscopy（IR）, N2 adsorptiondesorption, ultraviolet-visible diffuse reflectance spectroscopy and UV-visible spectroscopy. The photocatalytic activity of g-C3N4 nanotubes to rhodamine B degradation was investigated. The photocatalytic activity of the gC3N4 nanotubes under the visible light irradiation was effectively promoted because the tube structure can effectively promote the photo-electron transfer. The degradation percentage of rhodamine B was 95 and 99.4% at 60 and 120 min respective. The g-C3N4 nanotubes also displayed high recyclability.
作者
王晓雪
高建平
赵瑞茹
吴永利
郝超月
邱海霞
WANG Xiao-Xue;GAO Jian-Ping;ZHAO Rui-Ru;WU Yong-Li;HAO Chao-Yue;QIUHai-Xia(Department of Chemistry, Tianjin University, Tianjin 300350, Chin)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2018年第6期1059-1064,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.51573126)项目资助
