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Low-Voltage-Driven Sensors Based on ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases.
ACS Appl Mater Interfaces 2019; 11(27):24172-24183AA

Abstract

Herein, we report the synthesis of pristine and Au-functionalized ZnO nanowires (NWs) for low power consumption (self-heated) gas sensors at room temperature. The ZnO NWs were produced via a vapor-liquid-solid growth technique, and Au layers with different thicknesses were sputter-deposited on the ZnO NWs, followed by subsequent annealing. Microscopic characterization methods demonstrated that ZnO NWs were successfully formed. Pristine ZnO NW gas sensors showed the best sensitivity toward either CO or NO2 gases at 300 and 350 °C, respectively. Also, the sensitivities of pristine ZnO NW gas sensors were tested toward NO2 gas under different applied voltages; the sensors revealed a good response and selectivity under an applied voltage of 7 V. Au-functionalized ZnO NW gas sensors exhibited the best response for CO gas at an applied voltage of 7 V and showed a much higher response relative to the pristine ZnO NWs. The sensing mechanisms for pristine and functionalized gas sensors are comprehensively discussed.

Authors+Show Affiliations

Department of Materials Science and Engineering , Inha University , Incheon 22212 , Republic of Korea.Department of Materials Science and Engineering , Shiraz University of Technology , Shiraz 71557-13876 , Iran.Department of Materials Science and Engineering , Shiraz University of Technology , Shiraz 71557-13876 , Iran.Department of Materials Science and Engineering , Inha University , Incheon 22212 , Republic of Korea.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31246406

Citation

Kim, Jae-Hun, et al. "Low-Voltage-Driven Sensors Based On ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases." ACS Applied Materials & Interfaces, vol. 11, no. 27, 2019, pp. 24172-24183.
Kim JH, Mirzaei A, Kim HW, et al. Low-Voltage-Driven Sensors Based on ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases. ACS Appl Mater Interfaces. 2019;11(27):24172-24183.
Kim, J. H., Mirzaei, A., Kim, H. W., & Kim, S. S. (2019). Low-Voltage-Driven Sensors Based on ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases. ACS Applied Materials & Interfaces, 11(27), pp. 24172-24183. doi:10.1021/acsami.9b07208.
Kim JH, et al. Low-Voltage-Driven Sensors Based On ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases. ACS Appl Mater Interfaces. 2019 Jul 10;11(27):24172-24183. PubMed PMID: 31246406.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Low-Voltage-Driven Sensors Based on ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases. AU - Kim,Jae-Hun, AU - Mirzaei,Ali, AU - Kim,Hyoun Woo, AU - Kim,Sang Sub, Y1 - 2019/06/27/ PY - 2019/6/28/pubmed PY - 2019/6/28/medline PY - 2019/6/28/entrez KW - Au functionalization KW - CO KW - NO KW - ZnO nanowires KW - gas sensor KW - self-heating SP - 24172 EP - 24183 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 27 N2 - Herein, we report the synthesis of pristine and Au-functionalized ZnO nanowires (NWs) for low power consumption (self-heated) gas sensors at room temperature. The ZnO NWs were produced via a vapor-liquid-solid growth technique, and Au layers with different thicknesses were sputter-deposited on the ZnO NWs, followed by subsequent annealing. Microscopic characterization methods demonstrated that ZnO NWs were successfully formed. Pristine ZnO NW gas sensors showed the best sensitivity toward either CO or NO2 gases at 300 and 350 °C, respectively. Also, the sensitivities of pristine ZnO NW gas sensors were tested toward NO2 gas under different applied voltages; the sensors revealed a good response and selectivity under an applied voltage of 7 V. Au-functionalized ZnO NW gas sensors exhibited the best response for CO gas at an applied voltage of 7 V and showed a much higher response relative to the pristine ZnO NWs. The sensing mechanisms for pristine and functionalized gas sensors are comprehensively discussed. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31246406/Low_Voltage_Driven_Sensors_Based_on_ZnO_Nanowires_for_Room_Temperature_Detection_of_NO2_and_CO_Gases_ L2 - https://dx.doi.org/10.1021/acsami.9b07208 DB - PRIME DP - Unbound Medicine ER -