Insight into metallic oxide semiconductor (SnO2, ZnO, CuO, α-Fe2O3, WO3)-carbon nitride (g-C3N4) heterojunction for gas sensing application

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

“…[6,[549][550][551][552][553][554]. Metal oxide semiconductors/g-C 3 N 4 composites are widely used as gas sensors [555]. As a result, the g-C 3 N 4 loaded with metal oxides has also revealed new types of sensors to detect different kinds of materials [556].…”

One-step construction of Y, C, and O tridoped g-C3N4 as a bifunctional photocatalyst for H2 evolution and organic pollutant degradation under visible light irradiation

“…Thus, g-C 3 N 4 offers a wide variety of applications in organic pollutant degradation and H 2 generation under visible light [14][15][16] and other elds. [17][18][19][20] Although g-C 3 N 4 exhibits favorable photocatalytic properties, many drawbacks remain, including a high recombination rate of photogenerated electron-hole pairs, poor efficiency of using visible light, and small surface area. 21,22 Various approaches for addressing these issues have been developed, including metal and nonmetal doping, [23][24][25] deposition with noble or transition metals, 26,27 the introduction of vacancy defects, 28 copolymerization, 29 coupling with other semiconductors, 30 and construction of various nanoarchitectures.…”

“…Thus, g-C 3 N 4 offers a wide variety of applications in organic pollutant degradation and H 2 generation under visible light 14–16 and other fields. 17–20 Although g-C 3 N 4 exhibits favorable photocatalytic properties, many drawbacks remain, including a high recombination rate of photogenerated electron–hole pairs, poor efficiency of using visible light, and small surface area. 21,22…”

Highly efficient ethanol vapour detection using g-C3N4/ZnO micro flower-like heterostructural composites

“…In recent years, semiconductor metal oxide gas sensors have played an important role in environmental monitoring, chemical reaction process control, and personal safety due to their low cost, simple fabrication, and wide detection range. [1][2][3][4][5] In order to detect toxic and harmful pollutants in the environment in real time and avoid the threat to human health, scientists have researched nanomaterials with different structures, expecting to obtain gas sensors with industrial application value. 6,7 The excellent gas sensing performance veries that these semiconductor oxide nanocomposites are a promising candidate for the gas sensor industry, for example, SnO 2 /g-C 3 N 4 , 8 In 2 O 3 @GO, 9 Co 3 O 4 /ZnO, 10 etc.…”