A mild biomolecule-assisted route for preparation of flower-like AgBiS2 crystals

Abstract A mild biomolecule-assisted route for preparation of flower-like AgBiS 2 crystals was developed via reactions among AgNO 3 , BiCl 3 , and l -cystine in N,N -dimethylformamide (DMF) at 200 °C for 12 h. l -cystine was used as both the sulfide source and complexing agent. The as-synthesized AgBiS 2 crystals were characterized by XRD, EDS, XPS, PL, FESEM, TEM, HRTEM, and SAED. Results showed that the synthesized AgBiS 2 crystals had stoichiometric composition, good crystallinity, and flower-like morphology. A possible formation mechanism for flower-like AgBiS 2 crystals was also discussed based on the experiment.

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