An approach for photodegradation mechanism at TiO2/SrTiO3 interface

Correlation of photocatalytic activity and defects generated in Ca2+-based heterojunctions

“…•− ) showed the most relevant discoloration of approximately 27% after 120 min of reaction. Our results were in agreement with the study by Liu that also found that the most photoactive species was the superoxide radical [55], unlike the findings in other materials [10,[56][57][58]. XRD and TG/DTA analyses indicated the presence of Ca(OH) 2 and CaCO 3 , which were dielectric [59,60].…”

“…CdSe-modified CaTiO 3 nanocomposites and g-C 3 N 4 have been reported as photocatalysts in hydrogen production [37,38]. As an extension of our previous work [9][10][11], in this study, we have developed calcium heterojunctions demonstrating the importance of the defects generated in the formation of heterojunctions and the activity of photogenerated species, studied using scavengers.…”

“…In the fight against increasing water pollution, environmental remediation by photocatalysis has been a focus of the scientific community [6][7][8]. Highly photoactive materials that act in water decontamination have structural defects such as oxygen vacancies [9][10][11][12][13]. One way to generate structural defects is through the Electronic supplementary material The online version of this article (https ://doi.org/10.1007/s4245 2-020-03662 -6) contains supplementary material, which is available to authorized users.…”

CeO2 Nanoparticle Morphologies and Their Corresponding Crystalline Planes for the Photocatalytic Degradation of Organic Pollutants

“…It is known that the catalytic or photocatalytic performance as high reaction rate, photochemical activation spectroscopic range, and stability of semiconductor materials are dependent on the composition, 13,14 exposed surface, 5,11 and the oxidative or reducing agents generated in them. 15 Regarding catalytic activity, both the adsorption site of the molecule with its predominant functional groups and the agents generated in the semiconductor (by photocatalysis) are related to the catalytic/ photocatalytic efficiency. 16−18 Commonly, dye molecules are used to evaluate the photocatalytic efficiency of a semiconductor material.…”

Análise Da Radiação Solar Nos Meses De Janeiro E Fevereiro Por Modelagem Computacional Usando Redes Neurais Artificiais

“…In the initial 60 minutes of reaction the heterostructure has 25% higher photoactivity than TiO 2 .Heteroestrutura, também chamada de heterojunção, é um cluster formado pela junção de duas fases cristalinas podendo ser ambas de mesma composição química ou composições distintas. Na interface das fases pode ocorrer estresse, distorção da rede, devido à diferença entre os parâmetros de rede da estrutura cristalina obtida.Também pode ocorrer vacâncias de cátion, e/ou de ânions, no caso de óxidos podem ser vacâncias de oxigênio do tipo neutra ( ), mono ( ) e/ou duplamente ionizadas ( )(AMORESI et al, 2018;COLETO et al, 2018). Os materiais heteroestruturados diferem dos materiais dopados nos quais os defeitos estão diretamente relacionados à fenômenos de superfície.A interface entre os materiais que formam a heterojunção atua como região de transportadores de carga gerando uma sinergia que resulta na alteração das propriedades elétricas, ópticas e magnéticas do material conforme a estrutura de bandas das fases presentes.…”