Template-assisted synthesis of 3D ordered mesoporous graphitic carbon nitride decorated with gold nanoparticles for dopamine sensing

被引:2
作者
Wang, Yi [1 ]
Sang, Xiaoguang [1 ]
Bi, Jingce [1 ]
Fu, Hongjun [1 ]
Liu, Ningning [2 ]
Zhang, Xia [1 ]
Wang, Zhuopeng [1 ]
Han, Yide [1 ]
机构
[1] Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China
[2] Liaoning Petrochem Univ, Sch Petrochem Engn, Fushun 113001, Liaoning, Peoples R China
基金
中国国家自然科学基金;
关键词
ELECTROCHEMICAL DETERMINATION; LIGHT; NANOCOMPOSITE; COMPOSITES; EVOLUTION;
D O I
10.1039/d4nj03083d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Three-dimensional mesoporous graphitic carbon nitride (Au/3Dom CN) decorated with a gold nanoparticle composite was successfully prepared via a template-assisted method using Au-SiO2 nanospheres as sacrificial agents. Combined characterization through X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) verified the successful fabrication of the Au/3Dom CN composite. Noteworthily, Au/3Dom CN displayed good sensing performance for the electrochemical detection of dopamine (DA) with a high selectivity of 15.23 mu A mM-1 and a relatively low detection limit of 0.02 mu M (S/N = 3). Besides, the Au/3Dom CN composite exhibited an excellent anti-interference performance. These results reveal that the combined advantages of Au NPs and mesoporous g-C3N4 were conducive to the composite's sensing performance. Simultaneously, a mechanism was proposed to illustrate the good selectivity of the Au/3Dom CN composite for DA. This work presents a new avenue for dopamine detection using a mesoporous g-C3N4-based composite. Three-dimensional mesoporous graphitic carbon nitride (Au/3Dom CN) decorated with a gold nanoparticle composite was successfully prepared via a template-assisted method using Au-SiO2 nanospheres as sacrificial agents.
引用
收藏
页码:17928 / 17934
页数:7
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