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. Author manuscript; available in PMC: 2018 Sep 7.
Published in final edited form as: J Mater Chem B. 2017 Jun 8;5(33):6740–6751. doi: 10.1039/C7TB01086A

Figure 1.

Figure 1

(A) The XRD image of Cu39S28 HNPs; (B) XPS spectra of Cu 2p (Cu 2p1/2 and Cu 2p2/3 peak fit); The Cu 2p2/3 peak fit reveals a 2 peaks at 932.2 eV (corresponded to Cu+ in Cu(I)cysteine) and 933.5 eV (assigned to Cu2+ in CuS), corresponding well with the XRD results (Cu39S28); (C) Nitrogen adsorption/desorption isotherms; (D) Pore size distributions; (E) TEM images of as prepared Cu39S28 HNPs; Inset images: SAED of the Cu39S28 HNPs; (F) The interplanar crystal spacing of Cu39S28 HNPs; (G) Schematic illustration formation mechanism of Cu39S28 hollow nanopeanuts.