Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

Highly crystalline MgSn(OH)₆ cubic and polyhedral nanoparticles were synthesized via hydrothermal method by adjusting the ethanol/water ratio. Mg₂SnO₄/SnO₂ nanoparticles have been successfully obtained by subsequent calcining, which maintain the original morphologies of the precursor with shrank siz...

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Bibliographic Details
Published in:Journal of materials science 2015-09, Vol.50 (17), p.5865-5872
Main Authors: Qin, Yuan, Xiong, Juan, Zhang, Weihai, Liu, Lei, Cui, Yu, Gu, Haoshuang
Format: Article
Language:English
Subjects:
absorption
adsorption
Catalytic activity
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
desorption
Doppler effect
Ethanol
Heterostructures
lighting
Materials Science
Methylene blue
Microscopy
Morphology
Nanocomposites
Nanoparticles
nitrogen
Original Paper
oxygen
Performance degradation
Photocatalysis
Photodegradation
Photoelectrons
Polymer Sciences
Red shift
Scanning electron microscopy
Solid Mechanics
Spectrum analysis
Tin dioxide
Transmission electron microscopy
X-ray diffraction
X-ray photoelectron spectroscopy
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Summary:Highly crystalline MgSn(OH)₆ cubic and polyhedral nanoparticles were synthesized via hydrothermal method by adjusting the ethanol/water ratio. Mg₂SnO₄/SnO₂ 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 Mg₂SnO₄/SnO₂ heterostructures were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, UV–Vis absorption spectroscopy, and N₂ adsorption/desorption isotherms. The photocatalytic activity of the Mg₂SnO₄/SnO₂ nanoparticles was further evaluated by the degradation of methylene blue (MB) under UV illumination. The obtained results revealed that Mg₂SnO₄/SnO₂ 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 Mg₂SnO₄/SnO₂ nanocomposites contribute to the enhancement in the photocatalytic activity.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-015-9136-4