Graphitic carbon nitride@nickel-aluminium layered double hydroxide nanocomposites
محل انتشار: بیستمین کنگره شیمی ایران
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 406
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شناسه ملی سند علمی:
IRANCC20_738
تاریخ نمایه سازی: 28 اردیبهشت 1398
چکیده مقاله:
Through a green protocol, Ni-Al layered double hydroxides (Ni-Al LDHs) with molar ratio of 1:1, 2:1, and 3:1 were prepared in ultrasonic bath at a low temperature using hexamethylenetetramine as template. Effects of the initial reagent concentration, ultrasound illumination power, and reaction time on the shape and size of the nanostructured Ni-Al LDHs were investigated. Under ultrasonic irradiation, the synthesized nanostructures were combined with graphitic carbon nitride (g-C3N4) as a new nanocomposite for photocatalytic degradation of Rhodamine B (RhB) dye as a pollutant model. Field emission scanning electron microscopy (FE-SEM), powder XRD, transmission electron microscopy (TEM) and FT-IR spectroscopy were employed to characterize the Graphitic carbon nitride@nickel-aluminium layered double hydroxide nanocomposites (g-C3N4@Ni-Al-LDH nanocomposites). g-C3N4@Ni-Al-LDH nanocomposites demonstrated a more advanced photocatalytic behavior under visible light, which can be explained by the increased specific surficial area and decreased rate of the electron-hole recombination. The optimal percentage of weight for g-C3N4 was 40%. Our synthesized g-C3N4/Ni-Al LDH seem to be highly promising for future applications in different commercial fields and industries. Moreover, they are applicable for photodegradation of other organic pollutants
نویسندگان
Ghazal Salehi
Department of Chemistry, Faculty of Science, Tarbiat Modares University, Tehran, Iran
Ali Reza Mahjoub
Department of Chemistry, Faculty of Science, Tarbiat Modares University, Tehran, Iran
Reza Abazari
Department of Chemistry, Faculty of Science, Tarbiat Modares University, Tehran, Iran