L-cysteine-assisted Synthesis of AgInS2 Microspheres

AgInS2 microspheres were synthesized via a simple solvothermal route using biomolecule L-cysteine-assisted methods.The L-cysteine both as sulfur source and complexing agent plays an important role in the formation of AgInS2 microspheres.The morphology,structure,and phase composition of the as-prepared AgInS2 products were studied through X-ray diffraction,field emission scanning electron microscope,energy dispersive X-ray spectroscope,X-ray photoelectron spectroscope,transmission electron microscope,and high-resolution transmission electron microscope.The Results showed that the as-prepared AgInS2 microspheres were orthorhombic phase with average diameters of about 2 μm.In addition,the effect of reaction temperature on morphology of the product was investigated,and a possible growth mechanism of the AgInS2 microspheres was also determined based on electron microscope.