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Facile synthesis of g-C3N4 with various morphologies for application in electrochemical detection

机译：用于电化学检测应用的各种形态的G-C3N4的构成

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In the present study, g-C _(3) N _(4) with various morphologies was successfully synthesized via a variety of facile in situ methods. The as-prepared products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and X-ray diffraction (XRD). The results obtained using square wave anodic stripping voltammetry (SWASV) showed that when g-C _(3) N _(4) was applied as an electrochemical sensor, it exhibited excellent sensitivity and selectivity for the detection of heavy metal ions including Pb( II ), Cu( II ) and Hg( II ). Compared to nanoporous graphitic carbon nitride (npg-C _(3) N _(4) ) and g-C _(3) N _(4) nanosheet-modified glass carbon electrode (GCE), g-C _(3) N _(4) successfully realized the individual and simultaneous detection of four target heavy ions for the first time. In particular, g-C _(3) N _(4) displayed significant electrocatalytic activity towards Hg( II ) with a good sensitivity of 18.180 μA μM ~(?1) and 35.923 μA μM ~(?1) under the individual and simultaneous determination conditions, respectively. The sensitivity for simultaneous determination was almost 2 times that of the individual determination. Moreover, the fabricated electrochemical sensor showed good anti-interference, stability and repeatability; this indicated significant potential of the proposed materials for application in high-performance electrochemical sensors for the individual and simultaneous detection of heavy metal ions.
机译：在本研究中，通过原位方法各种容易成功地合成具有各种形态的G-C _（3）N _（4）。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），拉曼光谱和X射线衍射（XRD）来表征AS制备的产品。使用方波阳极汽提伏安法（SWASV）获得的结果表明，当施加GC _（3）N _（4）作为电化学传感器时，它表现出优异的敏感性和选择性，用于检测包括PB（II）的重金属离子，Cu（II）和Hg（II）。与纳米多孔石墨碳氮化物（NPG-C _（3）N _（4））和GC _（3）N _（4）纳米液改性玻璃碳电极（GCE），GC _（3）N _（4 ）首次成功实现了个体并同时检测四个目标重离子。特别地，GC _（3）N _（4）在个人和同时测定下显示出良好的敏感性为HG（II）的HG（II）的电催化活性，良好的敏感性为18.180μm〜（α1）和35.923μAμm〜（？1）条件分别。同时测定的敏感性几乎是个人测定的2倍。此外，制造的电化学传感器显示出良好的抗干扰，稳定性和可重复性;这表明所提出的材料在高性能电化学传感器中应用的显着潜力，用于个体和同时检测重金属离子。

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