NiO–ZnO nanoheterojunction networks for room-temperature volatile organic compounds sensing

Hongjun Chen, Renheng Bo, Aabhash Shrestha, Bobo Xin, Noushin Nasiri, Jin Zhou, Iolanda Di Bernardo, Aaron Dodd, Martin Saunders, Josh Lipton-Duffin, Thomas White, Takuya Tsuzuki, Antonio Tricoli

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Engineering of highly performing nanomaterials, capable of rapid detection of trace concentrations of gas molecules at room temperature, is key to the development of the next generation of miniaturized chemical sensors. Here, a highly performing nanoheterojunctions layout is presented for the rapid room-temperature chemical sensing of volatile organic compounds down to ten particles per billion concentrations. The layout consists of a 3D network of nickel oxide–zinc oxide (NiO–ZnO) p–n semiconductors with grain size of ≈20 nm nanometers and a porosity of ≈98%. Notably, it is observed that the formation of the p–n heterojunctions by decoration of a ZnO nanoparticle networks with NiO increases the sensor response by more than four times while improving the lower limit of detection. Under solar light irradiation, the optimal NiO–ZnO nanoheterojunction networks demonstrate a strong and selective room-temperature response to two important volatile organic compounds utilized for breath analysis, namely acetone and ethanol. Furthermore, these NiO–ZnO nanoheterojunctions show an inverse response to acetone from that observed for all others reducing gas molecules (i.e., ethanol, propane, and ethylbenzene). It is believed that these novel insights of the optoelectrochemical properties of ultraporous nanoheterojunction networks provide guidelines for the future design of low-power solid-state chemical sensors.

LanguageEnglish
Article number1800677
Number of pages8
JournalAdvanced Optical Materials
Volume6
Issue number22
Early online date2018
DOIs
Publication statusPublished - 19 Nov 2018
Externally publishedYes

Fingerprint

Zinc Oxide
Volatile Organic Compounds
Nickel oxide
nickel oxides
volatile organic compounds
Zinc oxide
Volatile organic compounds
zinc oxides
Acetone
Chemical sensors
room temperature
Ethanol
Gases
layouts
Solid-state sensors
acetone
sensors
Propane
Molecules
ethyl alcohol

Cite this

Chen, Hongjun ; Bo, Renheng ; Shrestha, Aabhash ; Xin, Bobo ; Nasiri, Noushin ; Zhou, Jin ; Di Bernardo, Iolanda ; Dodd, Aaron ; Saunders, Martin ; Lipton-Duffin, Josh ; White, Thomas ; Tsuzuki, Takuya ; Tricoli, Antonio. / NiO–ZnO nanoheterojunction networks for room-temperature volatile organic compounds sensing. In: Advanced Optical Materials. 2018 ; Vol. 6, No. 22.
@article{67d360da9f2a42609ae94dc986b14ff7,
title = "NiO–ZnO nanoheterojunction networks for room-temperature volatile organic compounds sensing",
abstract = "Engineering of highly performing nanomaterials, capable of rapid detection of trace concentrations of gas molecules at room temperature, is key to the development of the next generation of miniaturized chemical sensors. Here, a highly performing nanoheterojunctions layout is presented for the rapid room-temperature chemical sensing of volatile organic compounds down to ten particles per billion concentrations. The layout consists of a 3D network of nickel oxide–zinc oxide (NiO–ZnO) p–n semiconductors with grain size of ≈20 nm nanometers and a porosity of ≈98{\%}. Notably, it is observed that the formation of the p–n heterojunctions by decoration of a ZnO nanoparticle networks with NiO increases the sensor response by more than four times while improving the lower limit of detection. Under solar light irradiation, the optimal NiO–ZnO nanoheterojunction networks demonstrate a strong and selective room-temperature response to two important volatile organic compounds utilized for breath analysis, namely acetone and ethanol. Furthermore, these NiO–ZnO nanoheterojunctions show an inverse response to acetone from that observed for all others reducing gas molecules (i.e., ethanol, propane, and ethylbenzene). It is believed that these novel insights of the optoelectrochemical properties of ultraporous nanoheterojunction networks provide guidelines for the future design of low-power solid-state chemical sensors.",
keywords = "chemical sensors, flame synthesis, nanoheterojunctions, room temperature, volatile organic compounds",
author = "Hongjun Chen and Renheng Bo and Aabhash Shrestha and Bobo Xin and Noushin Nasiri and Jin Zhou and {Di Bernardo}, Iolanda and Aaron Dodd and Martin Saunders and Josh Lipton-Duffin and Thomas White and Takuya Tsuzuki and Antonio Tricoli",
year = "2018",
month = "11",
day = "19",
doi = "10.1002/adom.201800677",
language = "English",
volume = "6",
journal = "Advanced Optical Materials",
issn = "2195-1071",
publisher = "John Wiley & Sons",
number = "22",

}

Chen, H, Bo, R, Shrestha, A, Xin, B, Nasiri, N, Zhou, J, Di Bernardo, I, Dodd, A, Saunders, M, Lipton-Duffin, J, White, T, Tsuzuki, T & Tricoli, A 2018, 'NiO–ZnO nanoheterojunction networks for room-temperature volatile organic compounds sensing' Advanced Optical Materials, vol. 6, no. 22, 1800677. https://doi.org/10.1002/adom.201800677

NiO–ZnO nanoheterojunction networks for room-temperature volatile organic compounds sensing. / Chen, Hongjun; Bo, Renheng; Shrestha, Aabhash; Xin, Bobo; Nasiri, Noushin; Zhou, Jin; Di Bernardo, Iolanda; Dodd, Aaron; Saunders, Martin; Lipton-Duffin, Josh; White, Thomas; Tsuzuki, Takuya; Tricoli, Antonio.

In: Advanced Optical Materials, Vol. 6, No. 22, 1800677, 19.11.2018.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - NiO–ZnO nanoheterojunction networks for room-temperature volatile organic compounds sensing

AU - Chen,Hongjun

AU - Bo,Renheng

AU - Shrestha,Aabhash

AU - Xin,Bobo

AU - Nasiri,Noushin

AU - Zhou,Jin

AU - Di Bernardo,Iolanda

AU - Dodd,Aaron

AU - Saunders,Martin

AU - Lipton-Duffin,Josh

AU - White,Thomas

AU - Tsuzuki,Takuya

AU - Tricoli,Antonio

PY - 2018/11/19

Y1 - 2018/11/19

N2 - Engineering of highly performing nanomaterials, capable of rapid detection of trace concentrations of gas molecules at room temperature, is key to the development of the next generation of miniaturized chemical sensors. Here, a highly performing nanoheterojunctions layout is presented for the rapid room-temperature chemical sensing of volatile organic compounds down to ten particles per billion concentrations. The layout consists of a 3D network of nickel oxide–zinc oxide (NiO–ZnO) p–n semiconductors with grain size of ≈20 nm nanometers and a porosity of ≈98%. Notably, it is observed that the formation of the p–n heterojunctions by decoration of a ZnO nanoparticle networks with NiO increases the sensor response by more than four times while improving the lower limit of detection. Under solar light irradiation, the optimal NiO–ZnO nanoheterojunction networks demonstrate a strong and selective room-temperature response to two important volatile organic compounds utilized for breath analysis, namely acetone and ethanol. Furthermore, these NiO–ZnO nanoheterojunctions show an inverse response to acetone from that observed for all others reducing gas molecules (i.e., ethanol, propane, and ethylbenzene). It is believed that these novel insights of the optoelectrochemical properties of ultraporous nanoheterojunction networks provide guidelines for the future design of low-power solid-state chemical sensors.

AB - Engineering of highly performing nanomaterials, capable of rapid detection of trace concentrations of gas molecules at room temperature, is key to the development of the next generation of miniaturized chemical sensors. Here, a highly performing nanoheterojunctions layout is presented for the rapid room-temperature chemical sensing of volatile organic compounds down to ten particles per billion concentrations. The layout consists of a 3D network of nickel oxide–zinc oxide (NiO–ZnO) p–n semiconductors with grain size of ≈20 nm nanometers and a porosity of ≈98%. Notably, it is observed that the formation of the p–n heterojunctions by decoration of a ZnO nanoparticle networks with NiO increases the sensor response by more than four times while improving the lower limit of detection. Under solar light irradiation, the optimal NiO–ZnO nanoheterojunction networks demonstrate a strong and selective room-temperature response to two important volatile organic compounds utilized for breath analysis, namely acetone and ethanol. Furthermore, these NiO–ZnO nanoheterojunctions show an inverse response to acetone from that observed for all others reducing gas molecules (i.e., ethanol, propane, and ethylbenzene). It is believed that these novel insights of the optoelectrochemical properties of ultraporous nanoheterojunction networks provide guidelines for the future design of low-power solid-state chemical sensors.

KW - chemical sensors

KW - flame synthesis

KW - nanoheterojunctions

KW - room temperature

KW - volatile organic compounds

UR - http://www.scopus.com/inward/record.url?scp=85053388493&partnerID=8YFLogxK

UR - http://purl.org/au-research/grants/arc/DP150101939

UR - http://purl.org/au-research/grants/arc/DE160100569

U2 - 10.1002/adom.201800677

DO - 10.1002/adom.201800677

M3 - Article

VL - 6

JO - Advanced Optical Materials

T2 - Advanced Optical Materials

JF - Advanced Optical Materials

SN - 2195-1071

IS - 22

M1 - 1800677

ER -