Pure and Er-doped In 2O 3 nanotubes were systematically fabricated by using a single nozzle eletrospinning method followed by calcination.The as-synthesized nanotubes were characterized by scanning electron microscopy...Pure and Er-doped In 2O 3 nanotubes were systematically fabricated by using a single nozzle eletrospinning method followed by calcination.The as-synthesized nanotubes were characterized by scanning electron microscopy（SEM）,energy-dispersive X-ray（EDX） spectrometry and X-ray powder diffraction（XRD）.Compared with pure In 2O 3 nanotubes,Er-doped In 2O 3 nanotubes exhibit improved formaldehyde sensing properties at 260 ℃.The response of Er-doped In 2O 3 nanotubes to 20 ppm formaldehyde is about 12,which is 4 times larger than that of pure In 2O 3 nanotubes.The response and recovery times of Er-doped In 2O 3 nanotubes to 20 ppm formaldehyde are about 5 and 38 s,respectively.Furthermore,the response of Er-doped In 2O 3 nanotubes to 100 ppb formaldehyde is 2.19.展开更多
基金supported by the Jilin Provincial Science and Technology Department (No.20140204027GX)
文摘Pure and Er-doped In 2O 3 nanotubes were systematically fabricated by using a single nozzle eletrospinning method followed by calcination.The as-synthesized nanotubes were characterized by scanning electron microscopy（SEM）,energy-dispersive X-ray（EDX） spectrometry and X-ray powder diffraction（XRD）.Compared with pure In 2O 3 nanotubes,Er-doped In 2O 3 nanotubes exhibit improved formaldehyde sensing properties at 260 ℃.The response of Er-doped In 2O 3 nanotubes to 20 ppm formaldehyde is about 12,which is 4 times larger than that of pure In 2O 3 nanotubes.The response and recovery times of Er-doped In 2O 3 nanotubes to 20 ppm formaldehyde are about 5 and 38 s,respectively.Furthermore,the response of Er-doped In 2O 3 nanotubes to 100 ppb formaldehyde is 2.19.
