تحضير وتشخيص مركبات نانوية La2NiO4+δمع امكانية استعاملها كطبقات مضادة للبكتريا

Synthesis and characterisation of Nano- La₂NiO_4+δ with potential applications as antimicrobial coatings.

A. H. Al-Yasari¹, P.R. Slater²

¹Pharmaceutical chemistry branch, College of Pharmacy, University of Kerbala. Iraq

²school of chemistry, University of Birmingham.UK

Abstract

In this paper, the K₂NiF₄ system, La₂NiO_4+δ, has been analysed for potential photocatalytic activity for destruction of organic pollutants under low intensity UV light, with methyl orange used as model pollutants. The La₂NiO_4+δ, was shown to have promising photocatalytic activity. In addition, there was also evidence for catalytic decomposition of methyl orange in the dark, most likely due to a redox process, although further work is required to confirm this. The results show that the nanoLa₂NiO₄ samples prepared by sol-gel method have better photocatalytic activity than La₂NiO₄ prepared by solid state method since the sol-gel method produces a smaller particles sizes comparing to the solid state method. X-ray diffraction (XRD), thermogravimetric analyses (TGA), and The Brunauer–Emmett–Teller (BET) were used for surface characterizations.

تحضير وتشخيص مركبات نانوية La₂NiO_4+δمع امكانية استعاملها كطبقات مضادة للبكتريا

احمد اليساري ¹ , بيتر سليتر ²

1- جامعة كربلاء – كلية الصيدلة – العراق

2- جامعة بيرمنكهام – كلية العلوم – بريطانيا