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A new generation of alloyed/multimetal chalcogenide nanowires by chemical transformation

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Science Advances  06 Nov 2015:
Vol. 1, no. 10, e1500714
DOI: 10.1126/sciadv.1500714
  • Fig. 1 Structural characterization of TexSey@Se core-shell nanowires ([Te]:[Se] = 1:4).

    (A) TEM image. Inset: One liter of high-quality core-shell nanowire dispersion synthesized on a large scale. (B) XRD patterns. (C) HRTEM image of a single nanowire. (D) HAADF-STEM EDS line scan profile of a single nanowire. (E and F) Elemental mapping of Se (red) and Te (green).

  • Fig. 2 Characterization of MSeTe nanowires.

    (A) TEM image of AgSeTe nanowires. (B) HRTEM image of AgSeTe nanowires. Inset: A SAED pattern. (C) Elemental maps of Ag (magenta), Se (yellow), and Te (green). (D to K) TEM images of the remaining eight types of MSeTe nanowires: (D) HgSeTe, (E) CuSeTe, (F) BiSeTe, (G) PbSeTe, (H) CdSeTe, (I) SbSeTe, (J) NiSeTe, and (K) CoSeTe.

  • Fig. 3 TEM images of as-synthesized BMC nanowires.

    (1) Ag/Hg, (2) AgCu, (3) AgBi, (4) Ag/Pb, (5) Ag/Cd, (6) AgSb, (7) Ag/Ni, (8) Ag/Co, (9) Hg/Cu, (10) Hg/Bi, (11) HgPb, (12) HgCd, (13) Hg/Sb, (14) Hg/Ni, (15) Hg/Co, (16) Cu/Bi, (17) Cu/Pb, (18) Cu/Cd, (19) CuSb, (20) Cu/Ni, (21) Cu/Co, (22) BiPb, (23) Bi/Cd, (24) BiSb, (25) Bi/Ni, (26) Bi/Co, (27) PbCd, (28) Pb/Sb, (29) Pb/Ni, (30) Pb/Co, (31) Sb@Cd, (32) Ni@Cd, (33) Co@Cd, (34) Sb/Ni, (35) Sb/Co, (36) NiCo. The scale of each image is identical.

  • Fig. 4 Characterization of AgCuSeTe, Cu/Pb, and Ni@Cd nanowires.

    (A and B) HRTEM images and SAED patterns (insets) of AgCuSeTe and Cu/Pb. (C to E) Elemental maps of AgCuSeTe, Cu/Pb, and Ni@Cd.

  • Fig. 5 Schematic illustration of the formation mechanism of MSeTe and MMC nanowires.

    (A and B) Formation mechanism of MSeTe and MMC nanowires, respectively. BMC are chosen to demonstrate the formation mechanism of MMC. MX, M1X, and M2X represent the corresponding insoluble matters of metal precursors.

  • Table 1 Structures of as-prepared BMC samples preliminarily confirmed by XRD and TEM analyses.

    StructureAs-prepared BMC samples
    AlloyAgCu, AgBi, AgSb, HgPb, HgCd, CuSb, BiSb, PbBi, PbCd, NiCo
    HybridAg/Hg, Ag/Pb, Ag/Cd, Ag/Ni, Ag/Co, Hg/Cu, Hg/Bi, Hg/Sb, Hg/
    Ni, Hg/Co, Cu/Bi, Cu/Pb, Cu/Cd, Cu/Ni, Cu/Co, Bi/Cd, Bi/Ni, Bi/Co,
    Pb/Sb, Pb/Ni, Pb/Co, Sb/Ni, Sb/Co
    Core shellSb@Cd, Ni@Cd, Co@Cd

Supplementary Materials

  • Supplementary material for this article is available at http://advances.sciencemag.org/cgi/content/full/1/10/e1500714/DC1

    Fig. S1. TEM image of Te nanowires.

    Fig. S2. XPS spectra of TexSey@Se nanowires ([Te]:[Se] = 1:4).

    Fig. S3. Morphologic changes in TexSey@Se core-shell nanowires ([Te]:[Se] = 1:4) upon exposure to an electron beam.

    Fig. S4. Characterization of TexSey alloy nanowires ([Te]:[Se] = 4:1).

    Fig. S5. Characterization of as-synthesized TeSe4 alloy nanorods.

    Fig. S6. TEM images of TexSey@Se nanowires with different Te/Se precursor ratios.

    Fig. S7. XRD patterns of TexSey@Se nanowires with different Te/Se precursor ratios.

    Fig. S8. EDS spectra of TexSey@Se nanowires with different Te/Se precursor ratios.

    Fig. S9. Photographs of as-prepared MSeTe nanowires.

    Fig. S10. XRD patterns of MSeTe nanowires.

    Fig. S11. EDS spectra of MSeTe nanowires.

    Fig. S12. HRTEM images and corresponding fast Fourier transform patterns of MSeTe nanowires.

    Fig. S13. TEM images and XRD patterns of CdSeTe and BiSeTe nanowires synthesized by the CT of TexSey@Se nanowires with different Te/Se ratios.

    Fig. S14. TEM images and XRD patterns of samples FeSeTe and AgSeTe (prepared without NH4SCN).

    Fig. S15. TEM images and XRD patterns of CoSeTe and NiSeTe nanowires ([Te]:[Se] = 1:4) prepared with different amounts of hydrazine.

    Fig. S16. XRD patterns and EDS spectra of obtained AgCuSeTe, Cu/Pb, and Ni@Cd nanowires.

    Fig. S17. XRD patterns of obtained BMC alloy nanowires (I).

    Fig. S18. XRD patterns of obtained BMC hybrid nanowires (II).

    Fig. S19. XRD patterns of obtained BMC hybrid nanowires (III).

    Fig. S20. XRD patterns of obtained BMC hybrid nanowires (IV).

    Fig. S21. TEM images, elemental maps, and XRD patterns of the two types of MMC hybrid nanowires obtained.

    Fig. S22. TEM images and XRD patterns of Cu/Pb and BiPb nanowires prepared through the CT of TexSey@Se nanowires ([Te]:[Se] = 1:4).

    Fig. S23. Characterization of PbSeTe samples obtained from different synthesis stages.

    Table S1. Composition of CdSeTe and BiSeTe nanowires synthesized by the CT of TexSey@Se nanowires with different Te/Se ratios.

    Table S2. Standard reduction potentials excerpted from the CRC Handbook of Chemistry and Physics, 90th Edition (CRC Press, 2010).

    Table S3. Detailed reaction parameters for the synthesis of MSeTe (Pb, Cd, Co, Ni, Bi, and Sb) nanowires.

    Table S4. Detailed reaction conditions for the synthesis of BMC nanowires.

  • Supplementary Materials

    This PDF file includes:

    • Fig. S1. TEM image of Te nanowires.
    • Fig. S2. XPS spectra of TexSey@Se nanowires (Te:Se = 1:4).
    • Fig. S3. Morphologic changes in TexSey@Se core-shell nanowires (Te:Se = 1:4) upon exposure to an electron beam.
    • Fig. S4. Characterization of TexSey alloy nanowires (Te:Se = 4:1).
    • Fig. S5. Characterization of as-synthesized TeSe4 alloy nanorods.
    • Fig. S6. TEM images of TexSey@Se nanowires with different Te/Se precursor ratios.
    • Fig. S7. XRD patterns of TexSey@Se nanowires with different Te/Se precursor ratios.
    • Fig. S8. EDS spectra of TexSey@Se nanowires with different Te/Se precursor ratios.
    • Fig. S9. Photographs of as-prepared MSeTe nanowires.
    • Fig. S10. XRD patterns of MSeTe nanowires.
    • Fig. S11. EDS spectra of MSeTe nanowires.
    • Fig. S12. HRTEM images and corresponding fast Fourier transform patterns of MSeTe nanowires.
    • Fig. S13. TEM images and XRD patterns of CdSeTe and BiSeTe nanowires synthesized by the CT of TexSey@Se nanowires with different Te/Se ratios.
    • Fig. S14. TEM images and XRD patterns of samples FeSeTe and AgSeTe (prepared without NH4SCN).
    • Fig. S15. TEM images and XRD patterns of CoSeTe and NiSeTe nanowires (Te:Se = 1:4) prepared with different amounts of hydrazine.
    • Fig. S16. XRD patterns and EDS spectra of obtained AgCuSeTe, Cu/Pb, and Ni@Cd nanowires.
    • Fig. S17. XRD patterns of obtained BMC alloy nanowires (I).
    • Fig. S18. XRD patterns of obtained BMC hybrid nanowires (II).
    • Fig. S19. XRD patterns of obtained BMC hybrid nanowires (III).
    • Fig. S20. XRD patterns of obtained BMC hybrid nanowires (IV).
    • Fig. S21. TEM images, elemental maps, and XRD patterns of the two types of MMC hybrid nanowires obtained.
    • Fig. S22. TEM images and XRD patterns of Cu/Pb and BiPb nanowires prepared through the CT of TexSey@Se nanowires (Te:Se = 1:4).
    • Fig. S23. Characterization of PbSeTe samples obtained from different synthesis stages.
    • Table S1. Composition of CdSeTe and BiSeTe nanowires synthesized by the CT of TexSey@Se nanowires with different Te/Se ratios.
    • Table S2. Standard reduction potentials excerpted from the CRC Handbook of Chemistry and Physics, 90th Edition (CRC Press, 2010).
    • Table S3. Detailed reaction parameters for the synthesis of MSeTe (Pb, Cd, Co, Ni, Bi, and Sb) nanowires.
    • Table S4. Detailed reaction conditions for the synthesis of BMC nanowires.

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