Electrospinning of Cu2ZnSnSe4-xSx nanofibers by using PAN as template

Özel, Faruk; Kuş, Mahmut; Yar, Adem; Arkan, Emre; Yiğit, Mesude Zeliha; Aljabour, Abdalaziz; Buyukcelebi, Sumeyra; Tozlu, Cem; Ersöz, Mustafa

doi:10.1016/j.matlet.2014.10.132

Cited by 16 publications

(14 citation statements)

References 24 publications

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“…High molecular weight PVP (polyvinylpyrrolidone) was preferred for the synthesis of one dimensional CZTS nanofibers through electrospinning . Also, Cu 2 FeSnS 4 (CFTS) and CZTSeS nanofibers were fabricated by our group for the first time . In previous studies, photocatalytic hydrogen evolution has been reported for CZTS nanoplates and nanocrystals .…”

Section: Figurementioning

confidence: 74%

“…Figure a–d shows SEM images of the fabricated PAN‐CCT and CCTS nanofibers annealed at different temperatures. The average diameter and morphology of nanofibers are significantly influenced by the annealing temperature/time …”

Section: Figurementioning

confidence: 99%

“…[24][25][26] Also, Cu 2 FeSnS 4 (CFTS)a nd CZTSeS nanofibers were fabricated by our group for the first time. [27,28] In previous studies, photocatalytic hydrogen evolution has been reported for CZTS nanoplates and nanocrystals. [4,5] However,t here has been only one reporto n the application of CZTS materialasanH 2 -evolution electrocatalyst.…”

mentioning

confidence: 99%

“…This result showst hat long reaction times distort the fibers structure. [27][28][29][30] The control of temperature and time is the essential factor for the fabrication of CCTS nanocrystalline fibers because CCTS crystalsu ndergo decomposition into solid and gaseous binaries when subjected to elevated temperature. [29,30] Therefore, the annealing process was implemented in as ealed atmosphere to preserve the CCTS crystal structures from the detrimental effects of high temperature and materials loss.…”

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confidence: 99%

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Earth‐Abundant Cu₂CoSnS₄ Nanofibers for Highly Efficient H₂ Evolution at Soft Interfaces

et al. 2015

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Cu 2 CoSnS 4 (CCTS) nanofibers have been fabricated by electrospinninga nd exhibit an excellent morphology with an average nanofiber diameter of 150 nm. Polyacrylonitrile (PAN) was used as templating polymer that leads to ad ecrease in imperfectionsi nt he crystalline nanofibers. CCTS and Cu 2 ZnSnS 4 (CZTS) nanofibers, based on abundanta nd environmental friendly elements, efficiently enhanced the rates of biphasic proton reduction in the presence of an organic solubilized electron donor, decamethylferrocene (DMFc). This work paves the way for the exploration of copper-based chalcogenides as electrocatalysts for the hydrogen evolution reaction to replace noble metal Pt.The hydrogen evolutionr eaction( HER), which generates molecular hydrogen via water splitting, underpins several emerging clean-energy technologies. However, substantial materials and technological advancements are necessary to make widespread implementation of water splitting economically viable. Low-costa nd highly efficient earth-abundant catalysts to replace Pt-based materials for HER have attracted great interest in renewable energy research. Copper-based chalcogenides composed of non-toxic and earth-abundant elements show great potential in solar cell applications, [1,2] as electrocatalysts [3,4] and as photocatalysts for hydrogen evolution. [5][6][7] More recently,t he chalcogenides emiconductor compound Cu 2 ZnSnS 4 (CZTS) has been suggested as ac andidate for photocatalytic [5,6] and electrocatalytic [4] hydrogen evolution from water due to its high absorption coefficient, suitable band gap (1.5 eV), abundancy and nontoxicity.I th as also been reported that Cu 2 ZnSnS 1Àx Se x (CZTSeS) shows comparable or superior electrocatalytic activity relative to noble metal Pt in solar cells. [8] Among the family of chalcogenide-based semiconductors, Cu 2 CoSnS 4 (CCTS) is an analog alternative absorber with ab and gap in the range from 1.2 to 1.5 eV,w hich makes it ap roper material in energy-harvesting applications. [9][10][11] Most studies have focused on the synthesis of the Cu 2 -II-IV-VI 4

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Section: Figurementioning

confidence: 74%

Section: Figurementioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Earth‐Abundant Cu₂CoSnS₄ Nanofibers for Highly Efficient H₂ Evolution at Soft Interfaces

et al. 2015

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“…[19] In addition, our group reportedr ecently the photocatalytic hydrogen evolution activities of CZTS, Cu 2 ZnSnSe 4 (CZTSe), andC u 2 ZnSnSe 4Àx S x (CZTSeS) nanofibers in the presence of triethanolamine( TEOA) as the sacrificial electron donor and eosin Y( EY) as the photosensitizer under visible-light irradiation (l > 420 nm). [17,19,27] Semiconducting nanowires, [28] nanofibers, [29][30][31] and nanotubes [31] are used to enhance charget ransport in different energy applicationss uch as photovoltaic devices and hydrogen evolution reactions. [20][21][22] However,i ti sq uite difficult to control the phase crystal structure of quaternary semiconductors and to explain their stoichiometries owing to the sophistication of the component materials.…”

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confidence: 99%

Dye‐Sensitized Cu₂XSnS₄ (X=Zn, Ni, Fe, Co, and Mn) Nanofibers for Efficient Photocatalytic Hydrogen Evolution

2016

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The photocatalytic hydrogen evolution activities of low-cost and noble-metal-free Cu2 XSnS4 (X=Zn, Ni, Fe, Co, and Mn) nanofiber catalysts have been investigated using triethanolamine as an electron donor and eosin Y as a photosensitizer under visible-light irradiation. The rates of hydrogen evolution by Cu2 XSnS4 (X=Zn, Ni, Fe, Co, and Mn) nanofibers have been compared with each other and with that of the noble metal Pt. The hydrogen evolution rates for the nanofibers change in the order Cu2 NiSnS4 >Cu2 FeSnS4 >Cu2 CoSnS4 >Cu2 ZnSnS4 >Cu2 MnSnS4 (2028, 1870, 1926, 1420, and 389 μmol g(-1) h(-1) , respectively). The differences between the hydrogen evolution rates of the nanofibers could be attributed to their energy levels. Moreover, Cu2 NiSnS4, Cu2 FeSnS4 , and Cu2 CoSnS4 nanofibers show higher and more stable photocatalytic hydrogen production rates than that of the noble metal Pt under long-term irradiation with visible light.

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Optical characterization of Cu2ZnSnS4 nanocrystals thin film

Kişnişci

Özel

Yüksel

et al. 2016

J Mater Sci: Mater Electron

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Synthesis of nanostructured powders of tetragonal Cu 2 ZnSnS 4 (CZTS) nanocrystals was carried out based on the hot-injection process. High-quality CZTS thin films were prepared by spin coating method onto the Corning 1737 glass substrates. CZTS nanoparticles were characterized using X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM) and high resolution TEM. It is observed that a good quality CZTS film can be obtained by spin deposition at room temperature. The optical properties of the film were studied using UV-visible spectra between 300 and 1000 nm wavelength range. The direct optical band gap of the film evolved as 1.49 eV. This value is close to the ideal band gap for highest theoretical conversion efficiency of solar cell. The optical absorption coefficients of the film between 300 and 1000 nm are found to be about 2 and 7.6 9 10 4 cm-1 , respectively. The optical dispersion parameters of the film were also determined by Wemple-DiDomenico single oscillator model.

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Electrospinning of Cu2ZnSnSe4-xSx nanofibers by using PAN as template

Cited by 16 publications

References 24 publications

Earth‐Abundant Cu₂CoSnS₄ Nanofibers for Highly Efficient H₂ Evolution at Soft Interfaces

Earth‐Abundant Cu₂CoSnS₄ Nanofibers for Highly Efficient H₂ Evolution at Soft Interfaces

Dye‐Sensitized Cu₂XSnS₄ (X=Zn, Ni, Fe, Co, and Mn) Nanofibers for Efficient Photocatalytic Hydrogen Evolution

Optical characterization of Cu2ZnSnS4 nanocrystals thin film

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Electrospinning of Cu2ZnSnSe4-xSx nanofibers by using PAN as template

Cited by 16 publications

References 24 publications

Earth‐Abundant Cu2CoSnS4 Nanofibers for Highly Efficient H2 Evolution at Soft Interfaces

Earth‐Abundant Cu2CoSnS4 Nanofibers for Highly Efficient H2 Evolution at Soft Interfaces

Dye‐Sensitized Cu2XSnS4 (X=Zn, Ni, Fe, Co, and Mn) Nanofibers for Efficient Photocatalytic Hydrogen Evolution

Optical characterization of Cu2ZnSnS4 nanocrystals thin film

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Earth‐Abundant Cu₂CoSnS₄ Nanofibers for Highly Efficient H₂ Evolution at Soft Interfaces

Earth‐Abundant Cu₂CoSnS₄ Nanofibers for Highly Efficient H₂ Evolution at Soft Interfaces

Dye‐Sensitized Cu₂XSnS₄ (X=Zn, Ni, Fe, Co, and Mn) Nanofibers for Efficient Photocatalytic Hydrogen Evolution