Several researches have been reported about the characteristic of β-Ga_2O_3 nanowires which was synthesized on nickel oxide particle.But indeed,recent researches about synthesis of β-Ga_2O_3 nanowires on oxide-assis...Several researches have been reported about the characteristic of β-Ga_2O_3 nanowires which was synthesized on nickel oxide particle.But indeed,recent researches about synthesis of β-Ga_2O_3 nanowires on oxide-assisted transition metal are limited to nickel or cobalt oxide catalyst.In this work,Gallium oxide(β-Ga_2O_3)nanowires were synthesized by a simple thermal evaporation method from gallium powder in the range of 700-1000℃ using the iron,nickel,copper,cobalt and zinc oxide as a catalyst,respectively.The β-Ga_2O_3 nanowires with single crystalline without defects were successfully synthesized at the reaction temperature of 850,900 and 950℃ in all the catalysts.But optimum experimental condition in synthesis of nanowires varied with the kind of catalyst.As increasing synthesis temperature,the morphology of gallium oxide nanowires changed from nanowires to nanorods,and its diameter increased.From these results,we could be proposed that the growth mechanism of β-Ga_2O_3 nanowires was changed with synthesis temperature of nanowires.Microstructure and morphology of Synthesized nanowire was characterized by HR-TEM,FE-SEM,EDX and XRD.展开更多
用酸碱共沉淀法制备了四种铜基催化剂,在固定床微反 色谱联用装置上对制得的催化剂进行了二甲胺歧化性能的评价。结果表明,在Cu Zn Al Ni四元催化剂中增加少量的Al后,再分别加入少量的Ba、Fe、Mg,可对二甲胺催化歧化活性产生不同的影响...用酸碱共沉淀法制备了四种铜基催化剂,在固定床微反 色谱联用装置上对制得的催化剂进行了二甲胺歧化性能的评价。结果表明,在Cu Zn Al Ni四元催化剂中增加少量的Al后,再分别加入少量的Ba、Fe、Mg,可对二甲胺催化歧化活性产生不同的影响。加入Mg可使歧化活性增强,加入Ba、Fe则可使歧化活性大大减弱,Fe对歧化活性的削弱作用大于Ba。展开更多
文摘Several researches have been reported about the characteristic of β-Ga_2O_3 nanowires which was synthesized on nickel oxide particle.But indeed,recent researches about synthesis of β-Ga_2O_3 nanowires on oxide-assisted transition metal are limited to nickel or cobalt oxide catalyst.In this work,Gallium oxide(β-Ga_2O_3)nanowires were synthesized by a simple thermal evaporation method from gallium powder in the range of 700-1000℃ using the iron,nickel,copper,cobalt and zinc oxide as a catalyst,respectively.The β-Ga_2O_3 nanowires with single crystalline without defects were successfully synthesized at the reaction temperature of 850,900 and 950℃ in all the catalysts.But optimum experimental condition in synthesis of nanowires varied with the kind of catalyst.As increasing synthesis temperature,the morphology of gallium oxide nanowires changed from nanowires to nanorods,and its diameter increased.From these results,we could be proposed that the growth mechanism of β-Ga_2O_3 nanowires was changed with synthesis temperature of nanowires.Microstructure and morphology of Synthesized nanowire was characterized by HR-TEM,FE-SEM,EDX and XRD.
文摘用酸碱共沉淀法制备了四种铜基催化剂,在固定床微反 色谱联用装置上对制得的催化剂进行了二甲胺歧化性能的评价。结果表明,在Cu Zn Al Ni四元催化剂中增加少量的Al后,再分别加入少量的Ba、Fe、Mg,可对二甲胺催化歧化活性产生不同的影响。加入Mg可使歧化活性增强,加入Ba、Fe则可使歧化活性大大减弱,Fe对歧化活性的削弱作用大于Ba。
