Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin

Kyounghoon Lee, Dae Hyun Baek, Jongbaeg Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We report volatile organic compound (VOC) sensors based on suspended zinc oxide nanorods (ZnONRs) functionalized by cobalt porphyrin (CoPP) as sensing material. The ZnONRs are synthesized between two facing micro-bridges to form a two-terminal device. The ZnONRs are designed to be suspended well above the substrate for better exposure to and adsorption of VOC molecules to enhance sensitivity. Both of the two bridges serve as micro-heaters to increase the temperature of ZnONRs. Few studies have investigated the use of micro-heaters to heat these suspended nanostructures for gas sensing. In order to further improve the sensitivity, ZnONRs are functionalized by coating CoPP that excellently adsorbs VOC. The fabricated sensor successfully detected 8 ppb of toluene, one of representative VOCs. Benzene and xylene of 40 ppb were also able to be measured by the fabricated sensor.

Original languageEnglish
Title of host publicationTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages307-310
Number of pages4
ISBN (Electronic)9781538627310
DOIs
Publication statusPublished - 2017 Jul 26
Event19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017 - Kaohsiung, Taiwan, Province of China
Duration: 2017 Jun 182017 Jun 22

Publication series

NameTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems

Other

Other19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017
CountryTaiwan, Province of China
CityKaohsiung
Period17/6/1817/6/22

Fingerprint

Zinc Oxide
Volatile Organic Compounds
volatile organic compounds
Porphyrins
Cobalt
Zinc oxide
Nanorods
Volatile organic compounds
porphyrins
zinc oxides
nanorods
cobalt
Fabrication
fabrication
sensors
Sensors
heaters
Xylenes
sensitivity
Toluene

All Science Journal Classification (ASJC) codes

  • Chemical Health and Safety
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

Lee, K., Baek, D. H., & Kim, J. (2017). Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin. In TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems (pp. 307-310). [7994050] (TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TRANSDUCERS.2017.7994050
Lee, Kyounghoon ; Baek, Dae Hyun ; Kim, Jongbaeg. / Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin. TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 307-310 (TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems).
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abstract = "We report volatile organic compound (VOC) sensors based on suspended zinc oxide nanorods (ZnONRs) functionalized by cobalt porphyrin (CoPP) as sensing material. The ZnONRs are synthesized between two facing micro-bridges to form a two-terminal device. The ZnONRs are designed to be suspended well above the substrate for better exposure to and adsorption of VOC molecules to enhance sensitivity. Both of the two bridges serve as micro-heaters to increase the temperature of ZnONRs. Few studies have investigated the use of micro-heaters to heat these suspended nanostructures for gas sensing. In order to further improve the sensitivity, ZnONRs are functionalized by coating CoPP that excellently adsorbs VOC. The fabricated sensor successfully detected 8 ppb of toluene, one of representative VOCs. Benzene and xylene of 40 ppb were also able to be measured by the fabricated sensor.",
author = "Kyounghoon Lee and Baek, {Dae Hyun} and Jongbaeg Kim",
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Lee, K, Baek, DH & Kim, J 2017, Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin. in TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems., 7994050, TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems, Institute of Electrical and Electronics Engineers Inc., pp. 307-310, 19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017, Kaohsiung, Taiwan, Province of China, 17/6/18. https://doi.org/10.1109/TRANSDUCERS.2017.7994050

Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin. / Lee, Kyounghoon; Baek, Dae Hyun; Kim, Jongbaeg.

TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems. Institute of Electrical and Electronics Engineers Inc., 2017. p. 307-310 7994050 (TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin

AU - Lee, Kyounghoon

AU - Baek, Dae Hyun

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Y1 - 2017/7/26

N2 - We report volatile organic compound (VOC) sensors based on suspended zinc oxide nanorods (ZnONRs) functionalized by cobalt porphyrin (CoPP) as sensing material. The ZnONRs are synthesized between two facing micro-bridges to form a two-terminal device. The ZnONRs are designed to be suspended well above the substrate for better exposure to and adsorption of VOC molecules to enhance sensitivity. Both of the two bridges serve as micro-heaters to increase the temperature of ZnONRs. Few studies have investigated the use of micro-heaters to heat these suspended nanostructures for gas sensing. In order to further improve the sensitivity, ZnONRs are functionalized by coating CoPP that excellently adsorbs VOC. The fabricated sensor successfully detected 8 ppb of toluene, one of representative VOCs. Benzene and xylene of 40 ppb were also able to be measured by the fabricated sensor.

AB - We report volatile organic compound (VOC) sensors based on suspended zinc oxide nanorods (ZnONRs) functionalized by cobalt porphyrin (CoPP) as sensing material. The ZnONRs are synthesized between two facing micro-bridges to form a two-terminal device. The ZnONRs are designed to be suspended well above the substrate for better exposure to and adsorption of VOC molecules to enhance sensitivity. Both of the two bridges serve as micro-heaters to increase the temperature of ZnONRs. Few studies have investigated the use of micro-heaters to heat these suspended nanostructures for gas sensing. In order to further improve the sensitivity, ZnONRs are functionalized by coating CoPP that excellently adsorbs VOC. The fabricated sensor successfully detected 8 ppb of toluene, one of representative VOCs. Benzene and xylene of 40 ppb were also able to be measured by the fabricated sensor.

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M3 - Conference contribution

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SP - 307

EP - 310

BT - TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Lee K, Baek DH, Kim J. Fabrication and characterization of VOC sensors based on suspended zinc oxide nanorods functionalized by cobalt porphyrin. In TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems. Institute of Electrical and Electronics Engineers Inc. 2017. p. 307-310. 7994050. (TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems). https://doi.org/10.1109/TRANSDUCERS.2017.7994050