Microwave-assisted hydrolysis preparation of highly crystalline ZnO nanorod array for room temperature photoluminescence-based CO gas sensor

Tan Sin Tee, Tan Chun Hui, Chong Wu Yi, Chi Chin Yap, Ali Umar Akrajas, Ginting Riski Titian, Lee Hock Beng, Lim Kok Sing, Muhammad Yahaya, Muhamad Mat Salleh

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Crystallography plane orientation and surface defect on the nanostructure play an important role in optical gas sensor application due to its peculiar quantum properties. In this paper, we report on a formation of highly oriented (002) plane bounded ZnO nanorods ended with a surface defect hexagonal plane, prepared through microwave assisted hydrolysis within 20 s and used as a CO gas detector. A novel photoluminescence-based optical sensor approach was introduced to study the sensor response of the hazardous CO gas as low as 10 ppm at room temperature. The effect of ZnO nanorod arrays prepared by microwave-assisted hydrolysis and hydrothermal was studied towards CO gas response. It was found that the ZnO nanorods prepared through a microwave-assisted hydrolysis approach exhibited remarkable response at 81.1% towards 100 ppm CO gas exposure and showed an ultrafast recovery time of approximately 2.5 min. This provides an excellent sensing approach for operating a low concentration CO gas detection system at room temperature.

Original languageEnglish
Pages (from-to)304-312
Number of pages9
JournalSensors and Actuators, B: Chemical
Volume227
DOIs
Publication statusPublished - 1 May 2016

Fingerprint

Carbon Monoxide
Chemical sensors
Nanorods
nanorods
hydrolysis
Hydrolysis
Photoluminescence
Microwaves
Crystalline materials
photoluminescence
microwaves
preparation
Gases
sensors
Surface defects
Optical sensors
room temperature
gases
surface defects
Gas detectors

Keywords

  • CO gas sensing
  • Defect
  • Hydrothermal
  • Microwave synthesis
  • Photoluminescence
  • ZnO nanorod

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Instrumentation

Cite this

Microwave-assisted hydrolysis preparation of highly crystalline ZnO nanorod array for room temperature photoluminescence-based CO gas sensor. / Sin Tee, Tan; Chun Hui, Tan; Wu Yi, Chong; Yap, Chi Chin; Akrajas, Ali Umar; Riski Titian, Ginting; Hock Beng, Lee; Kok Sing, Lim; Yahaya, Muhammad; Mat Salleh, Muhamad.

In: Sensors and Actuators, B: Chemical, Vol. 227, 01.05.2016, p. 304-312.

Research output: Contribution to journalArticle

Sin Tee, Tan ; Chun Hui, Tan ; Wu Yi, Chong ; Yap, Chi Chin ; Akrajas, Ali Umar ; Riski Titian, Ginting ; Hock Beng, Lee ; Kok Sing, Lim ; Yahaya, Muhammad ; Mat Salleh, Muhamad. / Microwave-assisted hydrolysis preparation of highly crystalline ZnO nanorod array for room temperature photoluminescence-based CO gas sensor. In: Sensors and Actuators, B: Chemical. 2016 ; Vol. 227. pp. 304-312.
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AU - Akrajas, Ali Umar

AU - Riski Titian, Ginting

AU - Hock Beng, Lee

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