2017
DOI: 10.1021/acs.jpcc.7b03340
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Growth of BiVO4 Nanoparticles on a Bi2O3 Surface: Effect of Heterojunction Formation on Visible Irradiation-Driven Catalytic Performance

Abstract: Heterostructured materials composed of different semiconductors can be used to decrease rapid charge carrier recombination in photocatalysts, but the development of efficient synthesis methods for these materials remains a challenge. This work describes a novel strategy for tailoring heterostructures that is based on the solubility difference between two semiconductors with at least one metal in common. The growth of BiVO 4 on a preformed Bi 2 O 3 particle was used as a model for heterojunction formation. The … Show more

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Cited by 44 publications
(12 citation statements)
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“…Monoclinic BiVO 4 has been considered as a very promising photocatalyst due to its small band gap energy (2.45 eV) and excellent visible-light photocatalytic activity. , Nevertheless, the rapid recombination of photogenerated charge pairs and poor electrical conductivity of BiVO 4 limit its wide application in photodecomposition of organic pollutant and photocatalytic evolution of O 2 . To overcome the aforementioned limitation, various strategies have been developed, which include morphological control, loading cocatalyst, impurity doping, and heterojunction construction. Among them, coupling BiVO 4 with metal or other matched semiconductor into composites has been regarded as a very effective approach, and various composites based on BiVO 4 have been fabricated, such as BiVO 4 /Bi 2 S 3 , BiVO 4 /BiOCl, BiVO 4 /Ag, BiVO 4 /Bi 2 O 3 , BiVO 4 /AgI, BiVO 4 /WO 3 , and BiVO 4 /Ag/Ag 3 PO 4 . The enhancement of photocatalytic activity of these composites is mainly ascribed to the improved visible-light adsorption and reduced recombination rate of photoinduced electron–hole pairs. However, as far as we know, there are few reports on coupling BiVO 4 with Bi to construct composite photocatalyst and its photocatalytic activity. , …”
Section: Introductionmentioning
confidence: 99%
“…Monoclinic BiVO 4 has been considered as a very promising photocatalyst due to its small band gap energy (2.45 eV) and excellent visible-light photocatalytic activity. , Nevertheless, the rapid recombination of photogenerated charge pairs and poor electrical conductivity of BiVO 4 limit its wide application in photodecomposition of organic pollutant and photocatalytic evolution of O 2 . To overcome the aforementioned limitation, various strategies have been developed, which include morphological control, loading cocatalyst, impurity doping, and heterojunction construction. Among them, coupling BiVO 4 with metal or other matched semiconductor into composites has been regarded as a very effective approach, and various composites based on BiVO 4 have been fabricated, such as BiVO 4 /Bi 2 S 3 , BiVO 4 /BiOCl, BiVO 4 /Ag, BiVO 4 /Bi 2 O 3 , BiVO 4 /AgI, BiVO 4 /WO 3 , and BiVO 4 /Ag/Ag 3 PO 4 . The enhancement of photocatalytic activity of these composites is mainly ascribed to the improved visible-light adsorption and reduced recombination rate of photoinduced electron–hole pairs. However, as far as we know, there are few reports on coupling BiVO 4 with Bi to construct composite photocatalyst and its photocatalytic activity. , …”
Section: Introductionmentioning
confidence: 99%
“…8 Different strategies have been studied to obtain heterostructures such as one-step methods (simultaneous crystallization) [15][16][17][18] and the use of one and/or two preformed particles (heterojunctions formation by attachment). 9,[19][20][21][22][23][24] The growth of BiVO 4 on Bi 2 O 2 CO 3 surface (preformed) under hydrothermal conditions driven by their difference in solubility is a more interesting and efficient approach for the formation of this kind of heterostructure. This is because the formation of the heterojunction is unavoidable, since mandatorily BiVO 4 will grow using the bismuth present on the surface of Bi 2 O 2 CO 3 .…”
Section: Introductionmentioning
confidence: 99%
“…Esse método foi eficiente na obtenção de heteroestruturas do tipo II, uma vez que observou-se o aumento do tempo de vida dos portadores de carga devido à separação espacial efetiva. 42 Estratégia similar foi utilizada por outros autores para obter diferentes tipos de heteroestruturas, tais como, BiSiO 5 / Bi 2 MoO 6 , 43 AgBr/Ag 2 O, 44 Bi 2 S 3 /Bi 2 MoO 6 . 45…”
Section: Obtenção De Heteroestruturas Por Crescimento Simultâneo Das unclassified