Highly Selective and Sensitive Methanol Sensor Using Rose-Like ZnO Microcube and MoO3 Micrograss-Based Composite

Biswajit Mandal, Aaryashree, Rohit Singh, Shaibal Mukherjee

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Rose-like ZnO microcube/MoO3 micrograss-based composite was synthesized via hydrothermal process followed by solution-based synthesis approach. The crystal structure, chemical state, morphology, and elemental analysis of the obtained rose-like composite were examined by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and energy dispersive X-ray spectrometer, respectively. The results indicated that rose-like ZnO microcube/MoO3 micrograss composite was obtained where ZnO microcube pistil and MoO3 micrograss petal were formed. Furthermore, volatile organic compounds sensing performance of the rose-like composite was examined, where sensors presented outstanding sensing performance toward methanol including high selectivity and sensitivity, low-optimal operating temperature as well as very stable response-recovery characteristics, and long-term stability. Such sensing performance can be ascribed to a combined effect of the unique rose-like structures and band formation between ZnO/MoO3 n-n heterojunction.

Original languageEnglish
Pages (from-to)2659-2666
Number of pages8
JournalIEEE Sensors Journal
Volume18
Issue number7
DOIs
Publication statusPublished - 2018 Apr 1
Externally publishedYes

Keywords

  • Methanol detection
  • rose-like ZnO/MoO composite
  • selectivity

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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