Enhancement of photocatalytic activity for BiPO<sub>4</sub>via phase junction

Zhu, Yuelin; Liu, Yanfang; Lv, Yanhui; Ling, Qiang; Liu, Di; Zhu, Yongfa

doi:10.1039/c4ta01807a

Cited by 135 publications

(72 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a consequence, various approaches have been developed for improving the visible light photocatalytic efficiency, including metal and/or non-metal ion doping, surface chelation, and mixing of two semiconductors [7][8][9]. On the other hand, many researchers have diverted their attention to develop novel photocatalytic materials with high activity [10,11]. Apart from exploiting new materials, modifying conventional semiconductors are another alternative to develop efficient photocatalytic materials.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

et al. 2015

View full text Add to dashboard Cite

Highly crystalline MgSn(OH) 6 cubic and polyhedral nanoparticles were synthesized via hydrothermal method by adjusting the ethanol/water ratio. Mg 2 SnO 4 / SnO 2 nanoparticles have been successfully obtained by subsequent calcining, which maintain the original morphologies of the precursor with shrank size and rough surface. The structural properties of Mg 2 SnO 4 /SnO 2 heterostructures were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-Vis absorption spectroscopy, and N 2 adsorption/desorption isotherms. The photocatalytic activity of the Mg 2 SnO 4 / SnO 2 nanoparticles was further evaluated by the degradation of methylene blue (MB) under UV illumination. The obtained results revealed that Mg 2 SnO 4 /SnO 2 polyhedral nanoparticles have excellent performance on photocatalytic degradation of MB. It is assumed that the red shift of band gap, oxygen vacancies, and higher specific surface areas of polyhedral Mg 2 SnO 4 /SnO 2 nanocomposites contribute to the enhancement in the photocatalytic activity.

show abstract

Section: Introductionmentioning

confidence: 99%

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

et al. 2015

View full text Add to dashboard Cite

show abstract

“…It is obvious that the photocatalytic performance becomes quite low after adding the reagent EDTA-2Na, holes trapper, indicating that holes were predominate active species during the photocatalytic process. Nevertheless, the addition of IPA, hydroxyl radical trappers, has almost no effect, revealing that the formation of radicals • OH is a minor factor determining the catalytic efficiency [39]. Generally, the existence of • O 2 − radicals can be detected by the abatement of NBT concentration during photocatalysis since NBT molecules are apt to react with produced • O 2 − radicals to yield insoluble intermediate purple formazan [24].…”

Section: Fig 3 Sem Images Of Composites Ab0 (A) and Ab4(b) And Thementioning

confidence: 99%

Ag/Bi12O17Cl2 composite: A case study of visible-light-driven plasmonic photocatalyst

Chang

Wang

Luo

et al. 2017

Molecular Catalysis

View full text Add to dashboard Cite

a b s t r a c tIn this investigation, novel Ag/Bi 12 O 17 Cl 2 plasmonic composites with different Ag contents were constructed through a solvothermal and subsequent photoreduction route and fully characterized by a collection of analytical techniques. Spectroscopic results confirmed the presence and uniform dispersion of Ag nanoparticles on the 2D nanosheets of Bi 12 O 17 Cl 2 . The Ag content in composites exerted considerable influence on the extension of light-adsorption range and the enlargement of specific surface areas. The photocatalytic abilities of these Ag/Bi 12 O 17 Cl 2 composites were evaluated toward the degradation of rhodamine B (RhB) and 2,4-dichlorophenol (2,4-DCP) under the visible-light irradiation. The results demonstrated that the Ag/Bi 12 O 17 Cl 2 composites showed much higher photocatalytic efficiencies than that of pure Bi 12 O 17 Cl 2 , especially the sample with an optimal Ag content showing the best photocatalytic behavior among all tested samples. The remarkable enhancement of Ag/Bi 12 O 17 Cl 2 photocatalytic efficiency could be mainly attributed to the efficient charge separation that was induced by the localized surface plasmon resonance effect of metallic Ag, strong visible-light adsorption and the favorable morphology with enlarged specific surface areas. Eventually, the photocatalysis mechanism over Ag/Bi 12 O 17 Cl 2 composites was preliminarily proposed on the base of reactive species trapping experiments.

show abstract

“…Especially because the second phase was formed inside the first phase, the contact is estimated to be very homogeneous and intimate, as shown by TEM investigations. New examples of multiphase heterojunctions for photocatalysis are the combination of hexagonal BiPO 4 with monoclinic BiPO 4 for dyes and phenol degradation [19], and the combination of cubic and orthorhombic NaNbO 3 for CO 2 photoreduction [20].…”

Section: Semiconductor Heterojunctions and Their Preparationmentioning

confidence: 99%

Heterojunctions in Composite Photocatalysts

Marschall

2015

Topics in Current Chemistry

View full text Add to dashboard Cite

Combining different light-absorbing materials for the formation of semiconductor heterojunctions is a very effective strategy for preparing highly active photocatalyst and photoelectrochemical systems. Moreover, the combination of solid state semiconductors with polymers or molecular absorbers expands the possible combinations of materials to alter light absorption and optimize charge carrier separation. In this chapter, different strategies to prepare such composites are presented, highlighting the necessity of intimate interfacial contact for optimum charge carrier transfer. Moreover, the most recent developments and improvements in the formation of heterojunctions and composite photocatalyst systems based on semiconductor solids are presented.

show abstract

Enhancement of photocatalytic activity for BiPO₄via phase junction

Abstract: Photo-generated charges of BiPO4 with a phase junction could be separated and transferred quickly, which enhanced the photocatalytic performance.

Cited by 135 publications

References 38 publications

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

Ag/Bi12O17Cl2 composite: A case study of visible-light-driven plasmonic photocatalyst

Heterojunctions in Composite Photocatalysts

Contact Info

Product

Resources

About

Enhancement of photocatalytic activity for BiPO4via phase junction

Abstract: Photo-generated charges of BiPO4 with a phase junction could be separated and transferred quickly, which enhanced the photocatalytic performance.

Cited by 135 publications

References 38 publications

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

Ag/Bi12O17Cl2 composite: A case study of visible-light-driven plasmonic photocatalyst

Heterojunctions in Composite Photocatalysts

Contact Info

Product

Resources

About

Enhancement of photocatalytic activity for BiPO₄via phase junction