Synthesis of metal sulfides and their photocatalytic performance for aniline removal

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 338

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شناسه ملی سند علمی:

NSCEI09_143

تاریخ نمایه سازی: 19 آبان 1398

چکیده مقاله:

Aromatic amines such as anilin are widely used in the manufacture of pesticides, rubber chemicals, pharmaceuticals, photographic chemicals and as intermediates in many chemical syntheses. Because of the potential carcinogenic of aromatic amines, many methods have been recently applied to eliminate them. The photocatalytic oxidation is a promising method for degradation of aniline. In this paper, we synthesized metal sulfides such as CuS, ZnS, CdS and NiS by hydrothermal method. In the typical reaction procedure, metal precursors were dissolved in distilled water and then thioacetamide was added. The mixture was transfered into Teflon-lined autoclave and was kept at high temperature for 12 h. Subsequently, the precipitates were filtered and dried in an oven. The photocatalytic activity of the prepared metal sulfides was investigated by the degradation of aniline under visible light irradiation. The removal of aniline solution was carried out in a glass beaker containing 100 mL aniline aqueous (15 ppm) and 500 ppm of photocatalyst. The aniline concentration in the solution was determined using a UV-Visible spectrophotometer. The results (Graphical Abstract) showed that prepared metal sulfides have photocatalytic activity under the visible light radiation and the CuS exhibited the highest degradation percentage of aniline (65 %). As a consequence, kind of metal is an important factor in photocatalytic performance of metal sulfides because it affects band gap energy of photocatalyst.

نویسندگان

Parvaneh Nakhostin-Panahi

Department Of Chemistry, University Of Zanjan, Iran

faezeh peyrovi,

Department Of Chemistry, University Of Zanjan, Iran

Mohammad-Hossein Rasouli-Fard

Department Of Chemistry, University Of Zanjan, Iran