The rule of basic pH in characterization of AlOOH nanoparticles an dna nostructu res

Boeh mite is widely used for industries, su ch as adsor bents, catalysts, and cata lyst suppor ts due to their unique properties a nd also used for building units a nd directing template in the preparation of core-shell rods [۱]. In recent years, various morph ologies of b oehmite, su ch as nanot ubes, nanoFIbers, nanobelts, nanowires and Ào werlike ۳D nano-architectures have been synthe sized through a variet y of routes [۲]. In this work, hydrothermal r oute was used to fabricate high-qua lity pure bo ehmite nanoparticles and nanostructures in basic pH of ۱۰ and ۱۲ respectively.Mate rials and m ethod:In a ty pical synthesis experim ent, solution NaOH (۲ M) was added drop by drop to the ۴۰ ml of solution of A l(NO۳)۳ (۰.۴ M) to give lacteous precipitates (pH=۱۰ and ۱۲), then the mixture was tran sferred into a ۱۰۰-ml Teflon-lined stainless autoclave. The autoclav e was maint ained at ۲۰۰ °C for ۲ ۴ h, and then was allowed to coo l to room temperature. The products were sep arated from the solution by centrifugation, washed by water tow times and dried at ۶۰ °C for ۲۴ h.

کلیدواژه ها:

AlO OH ، Basic p H ، NaOH ، Hydrothermal ، nanopartic le ، nanostructure.