CAJ | 학술논문

分别采用重结晶法和中和反应法制备了碳纳米管/硝酸钾(CNTs/KNO_3)纳米复合粒子,运用扫描电镜(SEM)、X射线衍射能谱(XRD)、比表面积(SSA)和差热分析(DSC)等手段对复合粒子进行了表征.结果表明:两种制备过程实现了KNO,在CNTs外表面的负载,重结晶法制备的复合粒子的比表面积比CNTs降低了113.9 m~(2)·g~(-1),热分解温度与KNO_3相当;反应法制备的复合粒子的比表面积比CNTs降低了138.7 m~2·g~(-1),热分解温度比KNO_3降低了28℃.表明反应法制备的样品中,CNTs对KNO_3的热分解过程具有催化作用.
분별채용중결정법화중화반응법제비료탄납미관/초산갑(CNTs/KNO_3)납미복합입자,운용소묘전경(SEM)、X사선연사능보(XRD)、비표면적(SSA)화차열분석(DSC)등수단대복합입자진행료표정.결과표명:량충제비과정실현료KNO,재CNTs외표면적부재,중결정법제비적복합입자적비표면적비CNTs강저료113.9 m~(2)·g~(-1),열분해온도여KNO_3상당;반응법제비적복합입자적비표면적비CNTs강저료138.7 m~2·g~(-1),열분해온도비KNO_3강저료28℃.표명반응법제비적양품중,CNTs대KNO_3적열분해과정구유최화작용.
The carbon nano-tubes/potassium nitrate(CNTs/KNO_3)composites were prepared by recrystalization and neutralization method respectively.Micro-morphologies and thermal decomposition properties were characterized by scanning electron mitroscope(SEM),X-ray diffraction(XRD),specific surface area(SSA)and differential scanning calorimeter(DSC).The results show that KNO_3 is coated on the surface of CNTs by two methods.SSA of the nano-CNTs/KNO_3 composites by recrystalization decreases about 113.9 m~2·g~(-1) compared with that of CNTs,while the thermal decomposition temperature is the same as that of KNO_3.SSA of the nano-CNTs/KNO_3 composites prepared by neutralization decreases about 138.7 m~2·g~(-1) compared with that of CNTs,and the thermal decomposition temperature decreases about 28 ℃ compared with that of KNO_3.Results show that in neutralization,CNTs has catalytic effect on the thermal decomposition of KNO_3.