SnO2/g-C3N4 photocatalyst with enhanced visible-light photocatalytic activity

Yin, Ran; Luo, Qingzhi; Wang, Desong; Sun, Haitao; Li, Yuanyuan; Li, Xueyan; An, Jing

doi:10.1007/s10853-014-8330-0

Cited by 103 publications

(34 citation statements)

References 33 publications

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“…The formed radical such as OH and O À 2 are much more reactive to degrade the MB molecule e±ciently. 50 Typical mechanism of the degradation process includes:…”

Section: Reaction Mechanism Of Visible Light Photocatalysismentioning

confidence: 99%

Supported Bimetallic AgSn Nanoparticle as an Efficient Photocatalyst for Degradation of Methylene Blue Dye

Rout

Rengasamy

Ekka

et al. 2015

NANO

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We report the synthesis of TiO 2 -supported monometallic Ag, Sn and bimetallic AgSn nanoparticle catalysts prepared using sol-gel method via a rational nanoparticle encapsulation route. The samples were thoroughly characterized by ultraviolet-visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray di®raction (XRD),¯eld emission scanning electron microscope (FESEM) transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) with image mapping and Brunauer-Emmett-Teller (BET) surface area analyzer. The supported bimetallic AgSn catalyst had the anatase structure, surface area of 50 m 2 /g and 2:6 AE 0:6 nm particle size. The e±ciency of the catalysts was evaluated on photodegradation of methylene blue (MB) dye under visible light. The photocatalytic activity of MB was signi¯cantly enhanced in the presence of bimetallic AgSn nanoparticles (NPs) as compared to individual metal nanoparticles. Reusability study of the photocatalyst showed that the catalyst can be reused upto 5 runs with minimal loss in activity. Kinetic study revealed that the degradation reaction follows a pseudo¯rst-order pathway.

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“…The formed radical such as OH and O À 2 are much more reactive to degrade the MB molecule e±ciently. 50 Typical mechanism of the degradation process includes:…”

Section: Reaction Mechanism Of Visible Light Photocatalysismentioning

confidence: 99%

Supported Bimetallic AgSn Nanoparticle as an Efficient Photocatalyst for Degradation of Methylene Blue Dye

Rout

Rengasamy

Ekka

et al. 2015

NANO

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show abstract

“…Photocatalytic properties of semiconductor-based catalysts for degradation of organic pollutants have attracted increasing attention, owing to solar-to-chemical conversion with respect to energy and environmental concern [1][2][3]. Over the past two decades, the representative of traditional photocatalyst TiO 2 has been attracted tremendous attention for its low cost, non-toxicity, and photochemical stability.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

et al. 2015

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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.

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“…However, its poor light absorption performance and easy recombination of electron-hole pairs limited the photocatalytic efficiency of g-C 3 N 4 . Recently, several methods have been made to improve the photocatalytic activity of g-C 3 N 4 by employing different modifications, such as nonmetal element doping [22], noble metal deposition [23], coupling with semiconductors composite [24], and controlling morphology [25,26].…”

Section: Introductionmentioning

confidence: 99%

Enhanced visible-light photocatalytic activity and stability over g-C3N4/Ag2CO3 composites

et al. 2014

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A facile direct growth method was developed for the fabrication of Ag 2 CO 3 nanoparticles on the surface of g-C 3 N 4 at room temperature. The as-prepared g-C 3 N 4 / Ag 2 CO 3 composites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy with energy dispersion X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The photocatalytic activities were evaluated by degrading Rhodamine B dye. The results indicated that Ag 2 CO 3 nanoparticles with the size of 5-10 nm were finely distributed on the surface of g-C 3 N 4 sheet, leading to the enhancement of the photocatalytic activity. And when the mass ratio of g-C 3 N 4 to Ag 2 CO 3 was 1:4, the as-prepared composites exhibited the optimum photocatalytic activity, which was approximately 8 and 3 times higher than pure g-C 3 N 4 and Ag 2 CO 3 , respectively. The enhanced photocatalytic performance could be attributed to the synergetic effects between g-C 3 N 4 and Ag 2 CO 3 , including the smaller particle size of Ag 2 CO 3 and high charge separation efficiency of the photogenerated electron-hole pair. More attractively, the stability of Ag 2 CO 3 was improved due to its highly dispersion on g-C 3 N 4 sheet. In addition, based on the experimental results, the Z-scheme mechanism for the photodegradation over g-C 3 N 4 /Ag 2 CO 3 composites was proposed.

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SnO2/g-C3N4 photocatalyst with enhanced visible-light photocatalytic activity

Cited by 103 publications

References 33 publications

Supported Bimetallic AgSn Nanoparticle as an Efficient Photocatalyst for Degradation of Methylene Blue Dye

Supported Bimetallic AgSn Nanoparticle as an Efficient Photocatalyst for Degradation of Methylene Blue Dye

Facile synthesis and photocatalytic performance of Mg2SnO4/SnO2 heterostructures

Enhanced visible-light photocatalytic activity and stability over g-C3N4/Ag2CO3 composites

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