Fig. 1: Synthesis and characterizations of Sb-NSCF.

a Schematic illustration of the preparation of Sb-NSCF. b XRD patterns of Sb-NSCF, Sb2S3-NSC, and the Sb2S3 standard. c Raman spectra of Sb-NSCF and Sb2S3-NSC.

a Schematic illustration of the preparation of Sb-NSCF. b XRD patterns of Sb-NSCF, Sb2S3-NSC, and the Sb2S3 standard. c Raman spectra of Sb-NSCF and Sb2S3-NSC.