Biosynthesis of Ag NPs/ Crataegus kernel substrate as a green and retrievable Catalyst for Wastewater treatment
کد مقاله : 1172-IWWA
فاطمه حمیدی راد *، بهار خدادادی، مریم بردبار
گروه شیمی، دانشکده علوم، دانشگاه قم، قم، ایران
چکیده مقاله:
Nitrophenol compounds are one of the most harmful pollutants in wastewaters widely
used in various industries so, removal of these harmful pollutants is essential. In this research,
the extract of the plant of Lotus corniculatus L. was used to green synthesis of Ag nanoparticles
(NPs) supported on Crataegus kernel as an environmentally benign support. Ag NPs/ Crataegus
kernel as an effective catalyst was prepared through reduction of Ag+

ions using Lotus
corniculatus L. extract as the reducing and capping agent and Ag NPs immobilization on
Crataegus kernel surface in the absence of any stabilizer or surfactant.
According to FT-IR analysis, the hydroxyl groups of phenolics in Lotus corniculatus L.
extract as bioreductant agents are directly responsible for the reduction of Ag+

ions and
formation of Ag NPs. The as-prepared catalyst was characterized by Fourier transform infrared
(FT-IR) and Uv-Vis spectroscopy, field emission scanning electron microscopy (FESEM)
equipped with an energy dispersive X-ray spectroscopy (EDS), Elemental mapping and, X-ray
diffraction analysis (XRD). The synthesized catalyst was used in the reduction of 4-nitrophenol
(4-NP) at room temperature. The Ag NPs/ Crataegus kernel showed excellent catalytic activity
in the reduction of these organic dyes. In addition, it was found that Ag NPs/ Crataegus kernel
can be recovered and reused several times without significant loss of catalytic activity.
کلیدواژه ها:
Ag NPs/ Crataegus kernel, green synthesis, wastewater treatment, retrievable Catalyst.
وضعیت : مقاله پذیرفته شده است