Sensitive and selective CO2 gas sensor based on CuO/ZnO bilayer thin-film architecture

ZnO/Cu2O/g-C3N4 heterojunctions with enhanced photocatalytic activity for removal of hazardous antibiotics

“…In addition, the ZnO pattern shows three feature peaks at 31.8° (100), 34.4° (002) and 36.3° (101), in line with JCPDS No. 65-3411 [ 52 , 53 ]. Apparently, ZnO (★) and Cu 2 O (●) coexist in the ZnO/Cu 2 O/g-C 3 N 4 sample, and the size of Cu 2 O (14.5 nm) in the ZnO/Cu 2 O/g-C 3 N 4 photocatalyst was higher than the crystal size of Cu 2 O (7.9 nm) in the Cu 2 O/g-C 3 N 4 catalyst through calculation of Scherrer formula.…”

Facile and template-free fabrication of hierarchical coral spheres for acetone gas sensors

“…Considering the response efficiency, the simplicity of preparation and the convenience of use, gas sensors based on semiconductor metal oxides have always been widely used in the detection of volatile organic compounds. [7][8][9][10][11][12][13][14] The composition, crystalline size, surface morphology, and microstructures of semiconductor metal oxides all play essential roles in determining the sensing properties. Hence, many works have focused on the methods of fabricating composites, [15][16][17][18][19][20] constructing special morphologies and structures, [21][22][23][24][25][26] doping with noble metals or rare earth metals [27][28][29][30][31] and fabricating heterojunction structures.…”

Effect of reduced graphene oxide hybridization on ZnO nanoparticles sensitivity to NO2 gas: A DFT study

“…Applications of ZnO include ceramics, coatings, medical, cigarette filters, food additives, etc. In addition to these applications, gas sensing is one of the important applications that proved to be applicable to many gases such as H 2 S, H 2 , NO 2 , and CO 2 [16][17][18][19]. The ZnO/rGO hybrid proved to be beneficial in many research areas, including gas sensing [20,21].…”