Fabrication of Co3O4 and Au co-modified BiOBr flower-like microspheres with high photocatalytic efficiency for sulfadiazine degradation

Synthesis Methods and Applications of Semiconductor Material ZnWO4 with Multifunctions and Multiconstructions

“…Photocatalytic technology provides a method for us to use solar energy to reduce environmental pollution. [ 50,51 ] The photocatalytic reaction is one of the various ways of interactions between light and matter, and it is a chemical reaction that can be conducted under the simultaneous action of light and catalyst. There is a discontinuous band structure in semiconductors, which consists of the valence band (VB), conduction band (CB), and forbidden band.…”

Microwave-assisted synthesis of a Z-scheme heterojunction Ag/AgBr@BiOBr/Bi2O3 photocatalyst for efficient organic pollutant degradation under visible light

“…3 As one member of the BiOX family, BiOBr has been studied intensively because of its low bandgap (2.3-2.9 eV), 6 superior photocatalytic activity and stability, 7 and unique layered crystal structure. 8 Although this layer structure is favorable for separating the electron-hole pairs effectively because of the induced dipole, 7 its photocatalytic performance is still hindered by the low light absorption ability. 6 Bismuth oxide (Bi 2 O 3 ) has a low bandgap (2.1-2.8 eV) and remarkable properties, such as high refractive index, low cost, visible-light activity, higher oxidation power of the holes, 9 non-toxicity, and non-carcinogenicity.…”

“…3 As one member of the BiOX family, BiOBr has been studied intensively because of its low bandgap (2.3–2.9 eV), 6 superior photocatalytic activity and stability, 7 and unique layered crystal structure. 8 Although this layer structure is favorable for separating the electron–hole pairs effectively because of the induced dipole, 7 its photocatalytic performance is still hindered by the low light absorption ability. 6…”

Síntese, caracterização e avaliação de novos materiais à base de sílicas mesoporosas para degradação fotocatalítica de contaminantes de interesse emergente.

“…O TiO2 possui energia de band gap de aproximadamente 3,2 eV na forma cristalina anatase e de 3,0 eV na forma rutilo, sendo o comprimento de onda característico dos fótons responsáveis pela fotoexcitação λ < 400 nm. Quando a superfície do TiO2 é ativada por estes fótons, ocorre uma série de reações de oxidação e redução em cadeia, como segue (HOUAS et al, 2001;LACHHEB et al, 2002;LAKSHMI;RENGANATHAN;FUJITA, 1995 Trabalhos mais atuais (BAO et al, 2018;DUAN et al, 2020;GUAN et al, 2020;KONG et al, 2019;XU et al, 2020) inicial de SDZ (C0,SDZ) de 12,5 mg L -1 e menor irradiância (3 mW cm -2 ).…”

“…Como moléculas orgânicas fotossensíveis, as NDI presentes nos materiais PMONDI promoveram a geração de 1 O2 em concentrações estacionárias na ordem de 10 -12 mol L -1 , conforme o esperado (SILVA et al, 2015). Tais valores de concentração se mostraram similares, tanto para PMONDI-8 quanto para PMONDI-16, o que pode y = -3,14E-04x -1,63E-01 R² = 9,71E-01 -3,00 ARNOLD; MCNEILL, 2005;JI et al, 2017;LI et al, 2016;PERIŠA et al, 2013), associado a dois diferentes tempos de retenção (GUAN et al, 2020). Este sub-produto corresponde à extrusão de SO2 seguido do rearranjo da molécula de SDZ, formando o 4- Neste caso, a deficiência eletrônica na porção da anilina da SDZ •+ leva ao mecanismo de extrusão do grupo SO2 e rearranjo da molécula de SDZ (BATISTA et al, 2016;JI et al, 2017;LI et al, 2016).…”