Novel C-rich carbon nitride for room temperature NO₂ gas sensors

Abstract

A p-type gas sensor based on C-rich carbon nitride exhibits good sensitivity and high selectivity toward NO2 at room temperature.

Graphitic Carbon Nitride Materials: Sensing, Imaging and Therapy

“…Thus, they proposed that the g‐C 3 N 4 could also be applied in microelectromechanical gas sensors. Wang et al developed a gas senor for the detection of NO 2 . They synthesized a porous g‐C 3 N 4 materials, which possesses a large amount of pyridine.…”

Graphitic Carbon Nitride Film: An Emerging Star for Catalytic and Optoelectronic Applications

“…It is primarily composed of C and N atoms, and it is considered to be the most stable among the different forms of carbon nitrides . Owing to its appropriate band gap (2.7 eV) and band edge positions, elemental abundance, low cost, and nontoxicity, g‐CN has been applied in various areas, such as in the photodegradation of organic pollutants, the photoreduction and photo‐oxidation of water, the photoreduction of CO 2 , electrocatalysis, and the fabrication of sensors …”

“…[1][2][3] Owing to its appropriate band gap (2.7 eV) and band edge positions, elemental abundance, low cost, and nontoxicity,g -CN has been appliedi nv arious areas, such as in the photodegradation of organic pollutants, [4][5][6][7][8] the photoreduction and photo-oxidation of water, [1,[9][10][11][12][13][14][15] the photoreduction of CO 2 , [16][17][18][19] electrocatalysis, [20][21][22][23] and the fabrication of sensors. [24][25][26] Twos tructural units have been proposed for g-CN. One is striazine (aromatic ring of C 3 N 3 ), which is derived by using the high-pressure molten salt method.…”

Photoactivity of g‐C3N4/S‐Doped Porous Carbon Composite: Synergistic Effect of Composite Formation

“…While CS is predominantly n‐type, the holes dominate in g‐C 3 N 4 with a marked contribution of both carriers. Previous studies show the effect of g‐C 3 N 4 preparation conditions on its conductivity type . Both n‐ and p‐type nature were reported .…”

“…Previous studies show the effect of g-C 3 N 4 preparation conditions on itsc onductivity type. [4,25,27,28] Both n-and p-typen ature werer eported. [7,27,28] Apparently the carbon component hasastrong effect on the chemistry/electronics tate of the composite, as CS is an n-type material.…”