简介:BeOnanoparticlesweresynthesizedbypolyacrylamidegelroute.TheeffectsoftheprocessingparametersonthemorphologyandsizeofthesynthesizedBeOnanoparticleswereinvestigated.Thecalcinationtemperatureofthegelprecursorcontainingberylliumsulfatewasdeterminedbythermogravimetryanddifferentialscanningcalorimetry(TG-DSC),whichisaround690Cand160Clowerthanthegeneraltemperature.Xraydiffractometry(XRD),transmissionelectronmicroscopy(TEM),andspecificsurfaceareameasurements(BET)showedthatthesynthesizednanoparticlesunder700Cwerepure,globularandabout~5-20nmwithnarrowdistribution.Interestingly,thenanograinscoalescedandgrewunderhighercalcinationtemperaturesandlongercalcinationtime.Theinfluenceofcalcinationtemperatureonthemorphologyandgrowthbehaviorisgreaterthanthatofitsduration.Theactivationenergyforgraingrowthwasestimatedtobe24.53kJ/mol,andthedominantgrowthmechanismwasmostlikelytoberelatedtothevaportransportinporecontrolmodeandgrain-rotation-inducedgraincoalescence(GRIGC)mechanism.