Enhanced visible-light photocatalytic performances of ZnO through loading AgI and coupling piezo-photocatalysis

Enhanced photocatalytic performance of ZnO/AgCl composites prepared by high-energy mechanical ball milling

“…17 Various modifications have been reported to overcome the imperfections of ZnO, including morphology and size control, 12,14 metal/non-metal element doping, 18,19 precious metal deposition, 20 and compositing with narrow band gap semiconductors. 21…”

“…17 Various modifications have been reported to overcome the imperfections of ZnO, including morphology and size control, 12,14 metal/non-metal element doping, 18,19 precious metal deposition, 20 and compositing with narrow band gap semiconductors. 21 Recently, AgX (X = Cl, Br, I) and its composite photocatalysts have received extensive attention due to their excellent electrical conductivity. 22 AgCl is a type of semiconductor and its band gap value (B3.18 eV) 23 is larger than those of AgBr (B2.6 eV) 24 and AgI (B2.7 eV), 25 which can only be excited in a Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, the ultraviolet region and in very few visible light regions.…”

Highly efficient and stable AgI–CdO nanocomposites for photocatalytic and antibacterial activity

“…These could be attributed to the crystal planes corresponding to (100), (002), (110), (103), and (112) phases of AgI hexagonal structure. 49,52,68 The crystallographic planes of CdO's cubic structure are demonstrated by the diffraction peaks of CdO with crystalline planes at 2q values of 33°(111), 38.6°( 200), 55.22°(220), 65.9°(311), and 69.2°(222). [69][70][71] Strong and mild diffraction peaks at 2q values of 18.79°, 29.44°, 35.22°, 49.04°, 52.29°, and 56.08°may be attributable to CdO in synthesized composites (AgI-CdO) with varying wt% AgI.…”

Fabrication of magnetic ZnO/ZnFe2O4/diatomite composites: improved photocatalytic efficiency under visible light irradiation

“…The energy band potential of the narrow band gap semiconductor matches the energy band potential of ZnO, and a uniform FERMI energy level is formed between the two semiconductors, this leads to the generation of an internal electronic field and the diffusion of electrons at the conduction and valence band positions. This charge transfer effectively impedes the recombination rate of photogenerated electron–hole pairs and improves the optical quantum efficiency such as in ZnO/Bi 2 O 3 [ 12 ], MoO 3 /ZnO [ 13 ], Ag 2 O/ZnO [ 14 ], ZnO/AgI [ 15 ].…”