Comparison of copper aluminate synthesis in acidic and alkaline environments

A near-infrared reflective pigment CuAl۲O۴ was prepared by combustion synthesis in different pH (pH=۰, pH=۲, PH=۱۰) in basic and acidic environments. No additional annealing required. Using glycine as organic fuel. X-ray diffraction (XRD), scanning electron microscopy (SEM) techniques were used to characterize the nanostructured CuAl۲O۴. The average crystallite size was different in these samples. The information of sponge-like morphologies was confirmed by SEM image. The sample that synthesized in pH=۲ indicates smaller crystallite size and good diversion. The X-ray diffraction pattern indicates the formation of the CuAl۲O۴ spinel structure from the combustion reaction without any subsequent annealing, due to the high temperature developed during the combustion reaction. The sample in pH=۲ shows better results compared with others.

کلیدواژه ها:

Combustion synthesis ، cool pigment ، near infrared reflectance ، Copper Aluminate ، Mojtaba Okati ، Amir Masoud Aarabi ، Ebrahim Ghasemi ، Mehdi Safi ، Institute for Color Science and Technology