4.6 Article

Design of hollow dodecahedral Cu2O nanocages for ethanol gas sensing

Journal

MATERIALS LETTERS
Volume 247, Issue -, Pages 15-18

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.03.085

Keywords

Cu2O; Dodecahedral; Hollow nanocages; Ethanol; Gas sensor

Funding

  1. National Natural Science Foundation of China [51562038]
  2. key Project of Natural Science Foundation of Yunnan [2018FY001(-011)]
  3. Yunnan basic applied research project [2017FB086]

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P-type metal oxide semiconductors with special morphology have received high expectation for their potential application in gas sensors. We have synthesized hollow dodecahedral Cu2O nanocages with exposed (1 1 1) planes by a simple solution growth approach at room temperature. Characterization results indicate that the diameters of Cu2O nanocages are about 200 nm. Gas sensing performance of the Cu2O nanocages is investigated towards ethanol gas. Remarkably, the response of Cu2O reaches 4.6 at a low working temperature of 250 degrees C when the concentration is 100 ppm. The unique structure of Cu2O benefits the sensing performance owing to its active (1 1 1) planes. (C) 2019 Elsevier B.V. All rights reserved.

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