%0 Journal Article
%T Preparation of g-C3N4/Graphene Composite for Detecting NO2 at Room Temperature
%A Hongyan Yue
%A Nguyen Thuy Hang
%A Shaolin Zhang
%A Woochul Yang
%A Zhijun Zhang
%J Archive of "Nanomaterials".
%D 2017
%R 10.3390/nano7010012
%X Graphitic carbon nitride (g-C3N4) nanosheets were exfoliated from bulk g-C3N4 and utilized to improve the sensing performance of a pure graphene sensor for the first time. The role of hydrochloric acid treatment on the exfoliation result was carefully examined. The exfoliated products were characterized by X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM), atomic force microscopy (AFM), and UV-Vis spectroscopy. The exfoliated g-C3N4 nanosheets exhibited a uniform thickness of about 3¨C5 nm and a lateral size of about 1¨C2 ¦Ìm. A g-C3N4/graphene nanocomposite was prepared via a self-assembly process and was demonstrated to be a promising sensing material for detecting nitrogen dioxide gas at room temperature. The nanocomposite sensor exhibited better recovery as well as two-times the response compared to pure graphene sensor. The detailed sensing mechanism was then proposed
%K graphene
%K g-C3N4
%K composite
%K gas sensor
%K room temperature
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5295202/