SYNTHESS AND OHARACTERAATON OF AN-AL LAYERE) DOUBLEHYDROXDE

Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

UFGNSM03_259

تاریخ نمایه سازی: 10 تیر 1396

Abstract:

Zn-Al-LDH was obtained by co-precipitation method at hydrothermal condition. The prepared LDH was characterized by X-ray diffraction(XRD) and fourier transform infrared spectrometer(FT-IR). The XRD patterns exhibit the characteristic reflections of LDHs with a series of (003), (006), and (009) diffraction peaks, with 20 of the (003)peak is 9.70 and according to this value we can calculate the basal distance, 4.58A. In the FT-IR spectra, an intense and broad adsorption band located at 3444 cm-1 was observed, which was attributed to the OH stretching due to the presence of hydroxyl groups and interlayer water molecule of LDH. The absorption peaks at 1380 and 827 cm-1 are due to the presence of nitrate ions.In comparision to normal liquid water, the band has shifted towardslower wave numbers by about 20 cm-1, indicating that this water is present in the LDH interlayer. In the low frequency region, the adsorption peaks correspond to the lattice vibration modes(Al-O, ZnO, Zn-O-Al).Keywords:

Authors

PARVANEH DALIRKHEIROLLHAINEZHAD

Department of chemistry, Payam enour university-Tabriz center, Tabriz ۵۱۷۴۶, Iran

KAMELLA NEJATI

Department of chemistry, Payam enour university-Tabriz center, Tabriz ۵۱۷۴۶, Iran

HASSAN KEYPOUR

Faculty of Chemistry, Bu-Ali Sina University,Hamedan ۶۵۷۴, Iran

ZOLFAGHIAR REZIVANI

Department of Chemistry, Faculty of Science, Tarbiat Moallem university of Azarbaijan, Tabriz, Iran