Three-dimensional ordered ZnO–CuO inverse opals toward low concentration acetone detection for exhaled breath sensing

Xie, Yi; Xing, Ruiqing; Li, Qingling; Xu, Lin

doi:10.1016/j.snb.2015.01.086

Cited by 111 publications

(51 citation statements)

References 43 publications

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“…[8,9] Its high ordered porosity of interconnects is attractive for a variety of technological applications, such as porous membranes, catalysts, solid oxide fuel cells, and photonics applications. [10][11][12] The 3D periodic arrangement of pores provides a photonic bandgap to these artificial materials, which prohibits the transmission and hence leads to a reflection of electromagnetic radiation in spectral range which is determined by the materials' properties. Specifically, the radiation wavelength, which will be reflected, is influenced by the material microstructure assemble, mono-or multistacked, and also the macropore size.…”

mentioning

confidence: 99%

Low‐Temperature Mullite Formation in Ternary Oxide Coatings Deposited by ALD for High‐Temperature Applications

Furlan

Krekeler

Ritter

et al. 2017

Adv Materials Inter

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coatings on geometrically complex substrates, [2][3][4] such as anodic aluminum oxide membranes, aerogels, photonic crystals, and nanorods, with a film thickness control on the Å-scale. Additionally, by combining two or more binary ALD processes in a super cycle ALD process, multicomponent materials can be achieved, such as nanolaminates, doped thin films, and ternary or quaternary oxides. [5] The ability of compositional control of thin films at an atomic level provides the possibility for development of tailor-made atomically mixed systems, pointing to novel materials functionalities.Direct and inverse opals are examples of photonic crystals, which can be manufactured by colloidal self-assembly [6,7] and ALD. [8,9] Its high ordered porosity of interconnects is attractive for a variety of technological applications, such as porous membranes, catalysts, solid oxide fuel cells, and photonics applications. [10][11][12] The 3D periodic arrangement of pores provides a photonic bandgap to these artificial materials, which prohibits the transmission and hence leads to a reflection of electromagnetic radiation in spectral range which is determined by the materials' properties. Specifically, the radiation wavelength, which will be reflected, is influenced by the material microstructure assemble, mono-or multistacked, and also the macropore size. [8,9,[13][14][15] This selective behavior in transmission and reflection might pave the way to effective solar thermo photovoltaic energy conversion devices [16,17] and also next-generation thermal barrier coatings.However, retention of the 3D structure for high-temperature applications remains a significant challenge. [10,18] As the length scales in these porous materials are decreased, as higher is the surface area and specific activity. When exposed to high temperatures, the material's structure may suffer from detrimental morphological changes, such as extensive grain growth, distortion, and eventually destruction of the total periodically organized structure. [9,10] Therefore, this material needs to not only interact with electromagnetic radiation but also have structural stability and keep its function up to high temperatures (usually higher than 1000 °C). The latter fact could be addressed by coating the substrate material with a ceramic oxide that is stable at high temperatures, either by chemical vapor deposition (CVD) [19] or ALD [20] processes.Herein, mullite has been chosen: A ceramic material, which is well known for its stability at high-temperature environments, Atomic layer deposition (ALD) process presents thickness control in an Ång-strom scale due to its inherent surface self-limited reactions. In this work, an ALD super cycle approach, where a superposition of nanolaminates of SiO 2 and Al 2 O 3 is generated by cycling the precursors APTES-H 2 O-O 3 and TMA-H 2 O, is used to deposit thin films with varying ratio of Al 2 O 3 :SiO 2 into silicon wafers and into inverse photonic crystals. The resulting ternary oxide films deposited at low temperature (150 °C) ar...

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mentioning

confidence: 99%

Low‐Temperature Mullite Formation in Ternary Oxide Coatings Deposited by ALD for High‐Temperature Applications

Furlan

Krekeler

Ritter

et al. 2017

Adv Materials Inter

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“…Considering the previous reports in Table 1 [11,[35][36][37][38], the α-Fe 2 O 3 /SnO 2 HNA-based sensor in this work possesses relatively medium sensitivity (or operating temperature). We can conclude that the acetone sensing properties of MOXs can be further enhanced by constructing heterostructures or modifying with noble metals.…”

Section: Researchmentioning

confidence: 81%

“…For example, formaldehyde (lung cancer) [4], toluene (lung cancer) [5], ammonia (hemodialysis) [6], H 2 S (halitosis) [7], isoprene (heart disease) [8], benzene (smoker) [9], and pentane (acute asthma) [10] at few dozens to few thousands of ppb are known as biomarkers for patients. Researchers have also found that exhaled acetone can intuitively correlate with type-1 diabetes, which may exceed 1.8 ppm (only 0.3-0.9 ppm for healthy people) [1,11]. Therefore, an ultrasensitive acetone sensor is of great importance to detect acetone vapor at a sub-ppm level.…”

Section: Introductionmentioning

confidence: 99%

Construction of 1D/2D α -Fe ₂ O ₃ /SnO ₂ Hybrid Nanoarrays for Sub-ppm Acetone Detection

et al. 2020

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Exhaled acetone is one of the representative biomarkers for the noninvasive diagnosis of type-1 diabetes. In this work, we have applied a facile two-step chemical bath deposition method for acetone sensors based on α-Fe2O3/SnO2 hybrid nanoarrays (HNAs), where one-dimensional (1D) FeOOH nanorods are in situ grown on the prefabricated 2D SnO2 nanosheets for on-chip construction of 1D/2D HNAs. After annealing in air, ultrafine α-Fe2O3 nanorods are homogenously distributed on the surface of SnO2 nanosheet arrays (NSAs). Gas sensing results show that the α-Fe2O3/SnO2 HNAs exhibit a greatly enhanced response to acetone (3.25 at 0.4 ppm) at a sub-ppm level compared with those based on pure SnO2 NSAs (1.16 at 0.4 ppm) and pure α-Fe2O3 nanorods (1.03 at 0.4 ppm), at an operating temperature of 340°C. The enhanced acetone sensing performance may be attributed to the formation of α-Fe2O3–SnO2 n-n heterostructure with 1D/2D hybrid architectures. Moreover, the α-Fe2O3/SnO2 HNAs also possess good reproducibility and selectivity toward acetone vapor, suggesting its potential application in breath acetone analysis.

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“…(13) Therefore, many researchers have attempted to develop highly sensitive and selective semiconductor-type acetone sensors by utilizing various types of metal oxides as acetonesensing materials. (10,(14)(15)(16)(17)(18)(19)(20)(21)(22)(23) For example, Righettoni et al have reported that the loading of 10 mol% Si-based components onto WO 3 largely improved the acetone-sensing properties of the WO 3 sensor. (15,16) Wang et al have demonstrated that a 10 mol% Cr 2 O 3 -loaded WO 3 sensor showed a relatively large response to acetone, in comparison with responses to other gases such as ethanol, isoprene, and nitrogen monoxide.…”

Section: Introductionmentioning

confidence: 99%

“…(17) Xie et al have clarified that the compositional and structural control of ZnO-CuO composite sensors effectively improved the acetone selectivity against toluene, ethanol, and methanol. (23) On the other hand, the operation of gas sensors in dynamic temperature modulation mode is quite effective in enhancing gas-sensing properties, (24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34) particularly for volatile organic compounds (VOCs). Our group has actually demonstrated that catalytic combustion-type gas sensors that were operated in a mode of pulsed temperature heating (typical pulsed-heating period: 400 ms for 10 s), so-called adsorption/combustion-type gas sensors, showed large dynamic responses to various types of VOCs.…”

Section: Introductionmentioning

confidence: 99%

Acetone-Sensing Properties of WO3-Based Gas Sensors Operated in Dynamic Temperature Modulation Mode —Effects of Loading of Noble Metal and/or NiO onto WO3—

2016

Sensors and Materials

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Micro gas sensors fabricated with WO 3 loaded with and without a noble metal and/or NiO as a sensing material were operated in dynamic temperature modulation mode with sinusoidal modulation of Pt-heater voltage [low voltage: 0 V for RT, maximum voltage: 0.6 V (for 150 °C)-1.6 V (for 400 °C), period: 6 s], and their acetone-sensing properties were investigated in dry and wet air. The WO 3 sensor showed negligible dynamic responses to acetone and H 2 , but the loading of a noble metal onto the WO 3 markedly improved the dynamic responses, particularly to acetone in dry air. Among all the 0.5 wt% noble-metal-loaded WO 3 (0.5N/WO 3 , N: noble metal) sensors tested, the 0.5Pt/WO 3 sensor showed the largest dynamic response to acetone in dry air, while the dynamic response to acetone was largely decreased by the addition of moisture into the gaseous atmosphere. The loading of NiO onto WO 3 and 0.5Pt/WO 3 improved the dynamic response to acetone of the WO 3 and 0.5Pt/WO 3 sensors, and the 1.0 wt% NiO-loaded 0.5Pt/WO 3 sensor showed the largest dynamic acetone response and dynamic acetone selectivity against H 2 . These acetonesensing properties of the sensors operated in dynamic temperature modulation mode were superior to those of the ones operated in static constant temperature mode, possibly because of acetone and/ or its partial oxidation products adsorbed on the oxide surface at low temperatures and their abrupt catalytic combustion with oxygen adsorbates at high temperatures.

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Three-dimensional ordered ZnO–CuO inverse opals toward low concentration acetone detection for exhaled breath sensing

Cited by 111 publications

References 43 publications

Low‐Temperature Mullite Formation in Ternary Oxide Coatings Deposited by ALD for High‐Temperature Applications

Low‐Temperature Mullite Formation in Ternary Oxide Coatings Deposited by ALD for High‐Temperature Applications

Construction of 1D/2D α -Fe ₂ O ₃ /SnO ₂ Hybrid Nanoarrays for Sub-ppm Acetone Detection

Acetone-Sensing Properties of WO3-Based Gas Sensors Operated in Dynamic Temperature Modulation Mode —Effects of Loading of Noble Metal and/or NiO onto WO3—

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Three-dimensional ordered ZnO–CuO inverse opals toward low concentration acetone detection for exhaled breath sensing

Cited by 111 publications

References 43 publications

Low‐Temperature Mullite Formation in Ternary Oxide Coatings Deposited by ALD for High‐Temperature Applications

Low‐Temperature Mullite Formation in Ternary Oxide Coatings Deposited by ALD for High‐Temperature Applications

Construction of 1D/2D α -Fe 2 O 3 /SnO 2 Hybrid Nanoarrays for Sub-ppm Acetone Detection

Acetone-Sensing Properties of WO3-Based Gas Sensors Operated in Dynamic Temperature Modulation Mode &mdash;Effects of Loading of Noble Metal and/or NiO onto WO3&mdash;

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Construction of 1D/2D α -Fe ₂ O ₃ /SnO ₂ Hybrid Nanoarrays for Sub-ppm Acetone Detection

Acetone-Sensing Properties of WO3-Based Gas Sensors Operated in Dynamic Temperature Modulation Mode —Effects of Loading of Noble Metal and/or NiO onto WO3—