Synthesis of flower-like ZnO microstructures for gas sensor applications

Prabhakar Rai; Sudarsan Raj; Kyoung Jun Ko; Kyung Keun Park; Yeon Tae Yu

doi:10.1016/j.snb.2012.12.031

Synthesis of flower-like ZnO microstructures for gas sensor applications

Prabhakar Rai
, Sudarsan Raj
, Kyoung Jun Ko
, Kyung Keun Park
, Yeon Tae Yu^*

^*Corresponding author for this work

Information Materials Engineering

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

165 Scopus citations

Abstract

In the present work, flower-like ZnO microstructures were used for solid state gas sensor applications. Well-dispersed flower-like ZnO microstructures were synthesized by hydrothermal method. The size of flower-like ZnO microstructures was about 5-7 μm in radius and they were made up of dozen of ZnO nanorods building block units. Gas sensing device was prepared by thick film technology and tested primarily for NO₂ gas at different testing temperatures as well as concentrations. Response increased with gas concentration as well as temperature (except 400 °C). Further, it showed response for 10 ppm of NO₂ gas at room temperature. The response for NO₂ was higher than the CO, ethanol and acetaldehyde at low operating temperatures. These flower-like ZnO microstructures showed some sort of selectivity for NO₂ below 300 °C.

Original language	English
Pages (from-to)	107-112
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	178
DOIs	https://doi.org/10.1016/j.snb.2012.12.031
State	Published - 2013

Keywords

Acetaldehyde
CO
Ethanol
Gas sensor
NO
ZnO

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Electrical & Electronic
Engineering - Petroleum
Physics & Astronomy

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10.1016/j.snb.2012.12.031

Cite this

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title = "Synthesis of flower-like ZnO microstructures for gas sensor applications",

abstract = "In the present work, flower-like ZnO microstructures were used for solid state gas sensor applications. Well-dispersed flower-like ZnO microstructures were synthesized by hydrothermal method. The size of flower-like ZnO microstructures was about 5-7 μm in radius and they were made up of dozen of ZnO nanorods building block units. Gas sensing device was prepared by thick film technology and tested primarily for NO2 gas at different testing temperatures as well as concentrations. Response increased with gas concentration as well as temperature (except 400 °C). Further, it showed response for 10 ppm of NO2 gas at room temperature. The response for NO2 was higher than the CO, ethanol and acetaldehyde at low operating temperatures. These flower-like ZnO microstructures showed some sort of selectivity for NO2 below 300 °C.",

keywords = "Acetaldehyde, CO, Ethanol, Gas sensor, NO, ZnO",

author = "Prabhakar Rai and Sudarsan Raj and Ko, \{Kyoung Jun\} and Park, \{Kyung Keun\} and Yu, \{Yeon Tae\}",

year = "2013",

doi = "10.1016/j.snb.2012.12.031",

language = "English",

volume = "178",

pages = "107--112",

journal = "Sensors and Actuators, B: Chemical",

issn = "0925-4005",

}

TY - JOUR

T1 - Synthesis of flower-like ZnO microstructures for gas sensor applications

AU - Rai, Prabhakar

AU - Raj, Sudarsan

AU - Ko, Kyoung Jun

AU - Park, Kyung Keun

AU - Yu, Yeon Tae

PY - 2013

Y1 - 2013

N2 - In the present work, flower-like ZnO microstructures were used for solid state gas sensor applications. Well-dispersed flower-like ZnO microstructures were synthesized by hydrothermal method. The size of flower-like ZnO microstructures was about 5-7 μm in radius and they were made up of dozen of ZnO nanorods building block units. Gas sensing device was prepared by thick film technology and tested primarily for NO2 gas at different testing temperatures as well as concentrations. Response increased with gas concentration as well as temperature (except 400 °C). Further, it showed response for 10 ppm of NO2 gas at room temperature. The response for NO2 was higher than the CO, ethanol and acetaldehyde at low operating temperatures. These flower-like ZnO microstructures showed some sort of selectivity for NO2 below 300 °C.

AB - In the present work, flower-like ZnO microstructures were used for solid state gas sensor applications. Well-dispersed flower-like ZnO microstructures were synthesized by hydrothermal method. The size of flower-like ZnO microstructures was about 5-7 μm in radius and they were made up of dozen of ZnO nanorods building block units. Gas sensing device was prepared by thick film technology and tested primarily for NO2 gas at different testing temperatures as well as concentrations. Response increased with gas concentration as well as temperature (except 400 °C). Further, it showed response for 10 ppm of NO2 gas at room temperature. The response for NO2 was higher than the CO, ethanol and acetaldehyde at low operating temperatures. These flower-like ZnO microstructures showed some sort of selectivity for NO2 below 300 °C.

KW - Acetaldehyde

KW - CO

KW - Ethanol

KW - Gas sensor

KW - NO

KW - ZnO

UR - https://www.scopus.com/pages/publications/84872448965

U2 - 10.1016/j.snb.2012.12.031

DO - 10.1016/j.snb.2012.12.031

M3 - Journal article

AN - SCOPUS:84872448965

SN - 0925-4005

VL - 178

SP - 107

EP - 112

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

ER -

Synthesis of flower-like ZnO microstructures for gas sensor applications

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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