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Assembly of bulbous ZnO nanorods to bulbous nanoflowers and their high selectivity towards formaldehyde

  • Shahid Hussain
  • Tianmo Liu
  • Nimra Aslam
  • Shuoqing Zhao
  • Tengfei Li
  • Dewen Hou
  • Wen Zeng
Article

Abstract

The evolution of ZnO nanostructures was achieved successfully. At the initial stage, bud-shaped ZnO nanorods were prepared using sodium acetate, and then assembly of nanorods was aggregated into bulbous nanostructures.. Finally, the oval-like bulbous nanostructures were turned into ZnO nanorods and nanoflowers under the same hydrothermal reaction conditions. The as-prepared nanostructures were characterized by XRD, SEM, and HRTEM. The gas-sensing properties of both bulbous nanostructures were accounted for formaldehyde, acetone, ethanol methanol, ammonia and benzene at different concentrations and temperatures. A higher response (82, 70) and greater selectivity toward formaldehyde than other gases was observed at 75 ppm. A sharp response with the best recovery time was achieved at an optimum temperature of 200 °C.

Keywords

Dissociation Energy HCHO Sensor Surface Zinc Nitrate Hexahydrate Sharp Response 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors gratefully acknowledge the financial support for this work from the National Natural Science Foundation under the Grant Number 11332013.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringChongqing UniversityChongqingChina
  2. 2.National Engineering Research Centre for Magnesium AlloysChongqingChina
  3. 3.Department of PhysicsUniversity of SargodhaSargodhaPakistan

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