Hydrothermal synthesis of ZnO nanoflakes composed of fine nanoparticles for H2S gas sensing application

Umesh T. Nakate; Yeon Tae Yu; Sungjune Park

doi:10.1016/j.ceramint.2022.03.017

Hydrothermal synthesis of ZnO nanoflakes composed of fine nanoparticles for H₂S gas sensing application

Umesh T. Nakate
, Yeon Tae Yu
, Sungjune Park

Jeonbuk National University

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

The ZnO has the potential to form a number of nanostructures with various morphologies that can influence the gas sensing properties. Herein, hydrogen sulphide (H₂S) gas sensing properties of the ZnO powder with novel 2D nanoflake morphologies prepared using a hydrothermal technique is reported. The physicochemical properties of the ZnO were investigated by XRD, FESEM, TEM, EDS, elemental mapping, XPS, Raman, and UV–Visible spectroscopy. The ZnO powders were utilized to fabricate the gas sensors, and the sensor's responses were tested at various operating temperatures and gas concentrations. The sensor exhibited a high response towards H₂S gas in the range of 10–100 ppm at 250 °C and the highest response of 94% for 100 ppm H₂S gas concentration. The transient resistance response of the ZnO sensor was tested for 100–10 ppm H₂S gas concentration. The sensor showed the excellent repeatability of the resistance response. The H₂S sensing mechanism and stability of the ZnO sensor were studied.

Original language	English
Pages (from-to)	28822-28829
Number of pages	8
Journal	Ceramics International
Volume	48
Issue number	19
DOIs	https://doi.org/10.1016/j.ceramint.2022.03.017
State	Published - 1 Oct 2022
Externally published	Yes

Keywords

Gas response
HS
Nanostructure
Sensor
XRD
ZnO

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10.1016/j.ceramint.2022.03.017

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title = "Hydrothermal synthesis of ZnO nanoflakes composed of fine nanoparticles for H2S gas sensing application",

abstract = "The ZnO has the potential to form a number of nanostructures with various morphologies that can influence the gas sensing properties. Herein, hydrogen sulphide (H2S) gas sensing properties of the ZnO powder with novel 2D nanoflake morphologies prepared using a hydrothermal technique is reported. The physicochemical properties of the ZnO were investigated by XRD, FESEM, TEM, EDS, elemental mapping, XPS, Raman, and UV–Visible spectroscopy. The ZnO powders were utilized to fabricate the gas sensors, and the sensor's responses were tested at various operating temperatures and gas concentrations. The sensor exhibited a high response towards H2S gas in the range of 10–100 ppm at 250 °C and the highest response of 94\% for 100 ppm H2S gas concentration. The transient resistance response of the ZnO sensor was tested for 100–10 ppm H2S gas concentration. The sensor showed the excellent repeatability of the resistance response. The H2S sensing mechanism and stability of the ZnO sensor were studied.",

keywords = "Gas response, HS, Nanostructure, Sensor, XRD, ZnO",

author = "Nakate, \{Umesh T.\} and Yu, \{Yeon Tae\} and Sungjune Park",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd and Techna Group S.r.l.",

year = "2022",

month = oct,

day = "1",

doi = "10.1016/j.ceramint.2022.03.017",

language = "English",

volume = "48",

pages = "28822--28829",

journal = "Ceramics International",

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TY - JOUR

T1 - Hydrothermal synthesis of ZnO nanoflakes composed of fine nanoparticles for H2S gas sensing application

AU - Nakate, Umesh T.

AU - Yu, Yeon Tae

AU - Park, Sungjune

PY - 2022/10/1

Y1 - 2022/10/1

N2 - The ZnO has the potential to form a number of nanostructures with various morphologies that can influence the gas sensing properties. Herein, hydrogen sulphide (H2S) gas sensing properties of the ZnO powder with novel 2D nanoflake morphologies prepared using a hydrothermal technique is reported. The physicochemical properties of the ZnO were investigated by XRD, FESEM, TEM, EDS, elemental mapping, XPS, Raman, and UV–Visible spectroscopy. The ZnO powders were utilized to fabricate the gas sensors, and the sensor's responses were tested at various operating temperatures and gas concentrations. The sensor exhibited a high response towards H2S gas in the range of 10–100 ppm at 250 °C and the highest response of 94% for 100 ppm H2S gas concentration. The transient resistance response of the ZnO sensor was tested for 100–10 ppm H2S gas concentration. The sensor showed the excellent repeatability of the resistance response. The H2S sensing mechanism and stability of the ZnO sensor were studied.

AB - The ZnO has the potential to form a number of nanostructures with various morphologies that can influence the gas sensing properties. Herein, hydrogen sulphide (H2S) gas sensing properties of the ZnO powder with novel 2D nanoflake morphologies prepared using a hydrothermal technique is reported. The physicochemical properties of the ZnO were investigated by XRD, FESEM, TEM, EDS, elemental mapping, XPS, Raman, and UV–Visible spectroscopy. The ZnO powders were utilized to fabricate the gas sensors, and the sensor's responses were tested at various operating temperatures and gas concentrations. The sensor exhibited a high response towards H2S gas in the range of 10–100 ppm at 250 °C and the highest response of 94% for 100 ppm H2S gas concentration. The transient resistance response of the ZnO sensor was tested for 100–10 ppm H2S gas concentration. The sensor showed the excellent repeatability of the resistance response. The H2S sensing mechanism and stability of the ZnO sensor were studied.

KW - Gas response

KW - HS

KW - Nanostructure

KW - Sensor

KW - XRD

KW - ZnO

UR - https://www.scopus.com/pages/publications/85126518528

U2 - 10.1016/j.ceramint.2022.03.017

DO - 10.1016/j.ceramint.2022.03.017

M3 - Article

AN - SCOPUS:85126518528

SN - 0272-8842

VL - 48

SP - 28822

EP - 28829

JO - Ceramics International

JF - Ceramics International

IS - 19

ER -

Hydrothermal synthesis of ZnO nanoflakes composed of fine nanoparticles for H₂S gas sensing application

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Keywords

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