Abstract
We report an ultra-sound irradiated sonochemical method for the synthesis of graphene oxide (GO) capped Ag2S NCs. The synthesized GO capped Ag2S NCs was well characterized by TEM, SAED, SEM, EDX, XRD, Raman, XPS, FTIR, PL, UV–vis DRS and TGA techniques were employed to investigate the morphology, crystal structure, surface groups, thermal stability and optical properties of the prepared nanocomposites. The photocatalytic performance of the synthesized nanocomposites under sunlight was investigated in degradation of crystal violet (CV) dye as a target pollutant. The amount variation of synthesized catalyst (10–50 mg) for the degradation of CV was also investigated. The optimum amount of catalyst with maximum degradation efficiency of CV was observed in the presence of 50 mg amount of catalyst. The highest photocatalyst performance (99.58%) was achieved with 50 mg of nanocatalyst and 10 mg L−1 of CV under 90 min of sunlight irradiation. The degradation efficiency of CV using synthesized stable nanocomposite was still 92.34% achieved after 5 times reusing. Also, the effect of various scavengers, t-butyl alcohol (OH radicals scavenger), ammonium oxalate (AO, holes scavenger), and p-benzoquinone (BQ, O2− radicals scavenger) on CV degradation was investigated. Importantly, the highly efficient, inexpensive GO capped Ag2S NCs are expected to be applied in practical industry wastewater that containing complicated toxic components.
Published Version
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