Highly Sensitive and Fast-Responding Ethanol Sensor using Au Doped-In2O3 Hollow Spheres
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Pure and 0.3 wt% Au-doped In2O3 hollow spheres were synthesized via ultrasonic spray pyrolysis of droplets containing anIn-source and sucrose in air and their gas sensing characteristics to 1 ppm ethanol, 1 ppm toluene, 1 ppm xylene, 2 ppm nitrogendioxide (NO2), and 30 ppm carbon monoxide (CO) were measured at 400 – 450°C. The pure In2O3 hollow spheres exhibitedrelatively low gas responses and sluggish recovery kinetics. In contrast, the doping of Au into In2O3 hollow spheres significantlyincreased the gas response (S= resistance ratio) to 1 ppm ethanol (S= 20.6) at 400°C with low cross-responses (S = 1.3-8.8)to other interference gases. Furthermore, the hollow spherical morphology of In2O3 provides a large surface area and facilitatesrapid gas diffusion, resulting in fast response and recovery times. The sensor exhibited excellent performance with a low detection limit of 1.6 ppb. These findings indicate that the Au-In2O3 hollow spheres are promising candidates for advanced ethanolsensing applications, particularly in breath-alcohol monitoring for ignition interlock devices.
Abstract
Pure and 0.3 wt% Au-doped In2O3 hollow spheres were synthesized via ultrasonic spray pyrolysis of droplets containing anIn-source and sucrose in air and their gas sensing characteristics to 1 ppm ethanol, 1 ppm toluene, 1 ppm xylene, 2 ppm nitrogendioxide (NO2), and 30 ppm carbon monoxide (CO) were measured at 400 – 450°C. The pure In2O3 hollow spheres exhibitedrelatively low gas responses and sluggish recovery kinetics. In contrast, the doping of Au into In2O3 hollow spheres significantlyincreased the gas response (S= resistance ratio) to 1 ppm ethanol (S= 20.6) at 400°C with low cross-responses (S = 1.3-8.8)to other interference gases. Furthermore, the hollow spherical morphology of In2O3 provides a large surface area and facilitatesrapid gas diffusion, resulting in fast response and recovery times. The sensor exhibited excellent performance with a low detection limit of 1.6 ppb. These findings indicate that the Au-In2O3 hollow spheres are promising candidates for advanced ethanolsensing applications, particularly in breath-alcohol monitoring for ignition interlock devices.
참고문헌 (25)
- L. Tao, "The alcohol lock built on carbon-based field-effect transistor sensor with Pd", ZnO floating gate structure used for drunk driving surveillance, 2024, pp.419(15), 136393~
- X. -H. Ma, "Highly Sensitive and Selective PbTiO3 Gas Sensors with Negligible Humidity Interference in Ambient Atmosphere", ACS Appl. Mater. Interfaces, 11(5), pp.5240~5246 (2019)
- N. Yamazoe, "Toward Innovations of Gas Sensor Technology", Sens. Actuator B Chem., 108(1-2), pp.2~14 (2005)
- F. Röck, "Electronic nose : current status and future trends", Chem. Rev., 108(2), pp.705~725 (2008)
- A. Kolmakov, "Detection of CO and O2 Using Tin Oxide Nanowire Sensors", Adv. Mater., 15(12), pp.997~1000 (2003)
- A. Sanger, "Morphology-Controlled Aluminum-Doped Zinc Oxide Nanofibers for Highly Sensitive NO2 Sensors with Full Recovery at Room Temperature", Adv. Sci., 5(9), pp.1800816(1)~1800816(8) (2018)
- J. Shin, "Thin-Wall Assembled SnO2 Fibers Functionalized by Catalytic Pt Nanoparticles and their Superior Exhaled-Breath-Sensing Properties for the Diagnosis of Diabetes", Adv. Funct. Mater., 23(19), pp.2357~2367 (2013)
- Y. G. Song, "Heterojunction Based on Rh-Decorated WO3 Nanorods for Morphological Change and Gas Sensor Application Using the Transition Effect", Chem. Mater., 31(1), pp.207~215 (2019)
- S. Park, "Synthesis, Structure, and Ethanol Gas Sensing Properties of In2O3 Nanorods Decorated with Bi2O3 Nanoparticles", ACS Appl. Mater. Interfaces, 7(15), pp.8138~8146 (2015)
- J. -H. Lee, "Gas Sensors using Hierarchical and Hollow Oxide Nanostructures : Overview", Sens. Actuators B Chem., 140(1), pp.319~336 (2009)
- S. -Y. Jeong, "Rational Design of Semiconductor-Based Chemiresistors and Their Libraries for Next-Generation Artificial Olfaction", Adv. Mater., 32(51), pp.2002075(1)~2002075(47) (2020)
- S. -Y. Jeong, "Recent Advances and Trends in Filters for Highly Selective Metal Oxide Gas Sensors", J. Sens. Sci. Technol., 33(1), pp.48~55 (2024)
- Y. Berkay, "Temporal variations of volatile organic compounds inside the cabin of a new electric vehicle under different operation modes during winter using proton transfer reaction time-of-flight mass spectrometry", J. Hazard. Mater., 453, pp.131368~ (2023)
- F. A. Esteve-Turrillas, "Assessing air quality inside vehicles and at filling stations by monitoring benzene, toluene, ethylbenzene and xylenes with the use of semipermeable devices", Anal. Chim. Acta, 593(1), pp.108~116 (2007)
- T. L. H. Doan, "Preparation of n-ZnO", p-Co3O4 heterojunctions from zeolitic imidazolate frameworks(ZIF-8, Sens. Actuator B Chem., pp.2021, 348[DOI]
- C. Zhang, "Low concentration isopropanol gas sensing properties of Ag nanoparticles decorated In2O3 hollow spheres", J. Adv. Ceram., 11(3), pp.379~391 (2022)
- C. -S. Lee, "Discriminative detection of indoor volatile organic compounds using a sensor array based on pure and Fe-doped In2O3 nanofibers", Sens. Actuator B Chem., 285, pp.193~200 (2019)
- X. Yang, "Au decorated In2O3 hollow nanospheres : A novel sensing material toward amine", Sens. Actuator B Chem., 296, pp.126696(1)~126696(10) (2019)
- J. Ma, "High sensitivity and ultra-low detection limit of chlorine gas sensor based on In2O3 nanosheets by a simple template method", Sens. Actuator B Chem., 305, pp.127456~ (2020)
- J. Fang, "Au doped In2O3 nanoparticles : Preparation, and their ethanol detection with high performance", Mater. Sci. Semicond. Process., 146, pp.106701~ (2022)
- S. -W. Park, "General Strategy for Designing Highly Selective Gas-Sensing Nanoreactors : Morphological Control of SnO2 Hollow Spheres and Configurational Tuning of Au Catalysts", ACS Appl. Mater. Interfaces, 12(46), pp.51607~51615 (2020)
- Y. Liu, "Hydrothermal synthesis of Au@SnO2 hierarchical hollow microspheres for ethanol detection", Sens. Actuator B Chem., 319, pp.128299~ (2020)
- X. Xu, "Au-loaded In2O3 nanofibers-based ethanol micro gas sensor with low power consumption", Sens. Actuator B Chem., 160(1), pp.713~719 (2011)
- A. L. Zou, "Ethanol sensing with Au-modified ZnO microwires", Sens. Actuator B Chem., 227, pp.65~72 (2016)
- J. Huang, "Enhanced acetone-sensing properties to ppb detection level using Au", Pd-doped ZnO nanorod, 2020, pp.310, 127129~