Hollow zinc oxide microspheres functionalized by Au nanoparticles for gas sensors

Xiaowei Li; Wei Feng; Yan Xiao; Peng Sun; Xiaolong Hu; Kengo Shimanoe; Geyu Lu; Noboru Yamazoe

doi:10.1039/c4ra02541e

Hollow zinc oxide microspheres functionalized by Au nanoparticles for gas sensors

Xiaowei Li, Wei Feng, Yan Xiao, Peng Sun, Xiaolong Hu, Kengo Shimanoe, Geyu Lu, Noboru Yamazoe

Functional Materials Science

Research output: Contribution to journal › Article

26 Citations (Scopus)

Abstract

We present a facile one-step template-free route for the synthesis of homogeneous Au-loaded ZnO hollow spheres composed of nanoparticles. The synthesis was performed at a relatively low temperature (90 °C) with short reaction duration (40 min). Field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectrometry (EDX) analysis revealed that Au nanoparticles were homogeneously embedded into ZnO spherical shell, which was composed of nano-sized primary particles. Furthermore, to investigate the influence of Au nanoparticles on the sensor performance, the gas sensing properties of Au-loaded ZnO were studied. A comparative gas sensing investigation between the Au-loaded ZnO and pure ZnO hollow spheres was performed to display the superior sensing properties of the loaded samples. As expected, the sensor using 1.0 mol% Au-loaded ZnO exhibited a high response and fast response and recovery properties to ethanol, which could be attributed to the catalytic effect of Au. This journal is

Original language	English
Pages (from-to)	28005-28010
Number of pages	6
Journal	RSC Advances
Volume	4
Issue number	53
DOIs	https://doi.org/10.1039/c4ra02541e
Publication status	Published - 2014

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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Li, X., Feng, W., Xiao, Y., Sun, P., Hu, X., Shimanoe, K., Lu, G., & Yamazoe, N. (2014). Hollow zinc oxide microspheres functionalized by Au nanoparticles for gas sensors. RSC Advances, 4(53), 28005-28010. https://doi.org/10.1039/c4ra02541e

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abstract = "We present a facile one-step template-free route for the synthesis of homogeneous Au-loaded ZnO hollow spheres composed of nanoparticles. The synthesis was performed at a relatively low temperature (90 °C) with short reaction duration (40 min). Field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectrometry (EDX) analysis revealed that Au nanoparticles were homogeneously embedded into ZnO spherical shell, which was composed of nano-sized primary particles. Furthermore, to investigate the influence of Au nanoparticles on the sensor performance, the gas sensing properties of Au-loaded ZnO were studied. A comparative gas sensing investigation between the Au-loaded ZnO and pure ZnO hollow spheres was performed to display the superior sensing properties of the loaded samples. As expected, the sensor using 1.0 mol% Au-loaded ZnO exhibited a high response and fast response and recovery properties to ethanol, which could be attributed to the catalytic effect of Au. This journal is",

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AU - Li, Xiaowei

AU - Feng, Wei

AU - Xiao, Yan

AU - Sun, Peng

AU - Hu, Xiaolong

AU - Shimanoe, Kengo

AU - Lu, Geyu

AU - Yamazoe, Noboru

PY - 2014

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