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Wu P, Li Y, Yang A, Tan X, Chu J, Zhang Y, Yan Y, Tang J, Yuan H, Zhang X, Xiao S. Advances in 2D Materials Based Gas Sensors for Industrial Machine Olfactory Applications. ACS Sens 2024; 9:2728-2776. [PMID: 38828988 DOI: 10.1021/acssensors.4c00431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The escalating development and improvement of gas sensing ability in industrial equipment, or "machine olfactory", propels the evolution of gas sensors toward enhanced sensitivity, selectivity, stability, power efficiency, cost-effectiveness, and longevity. Two-dimensional (2D) materials, distinguished by their atomic-thin profile, expansive specific surface area, remarkable mechanical strength, and surface tunability, hold significant potential for addressing the intricate challenges in gas sensing. However, a comprehensive review of 2D materials-based gas sensors for specific industrial applications is absent. This review delves into the recent advances in this field and highlights the potential applications in industrial machine olfaction. The main content encompasses industrial scenario characteristics, fundamental classification, enhancement methods, underlying mechanisms, and diverse gas sensing applications. Additionally, the challenges associated with transitioning 2D material gas sensors from laboratory development to industrialization and commercialization are addressed, and future-looking viewpoints on the evolution of next-generation intelligent gas sensory systems in the industrial sector are prospected.
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Affiliation(s)
- Peng Wu
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Yi Li
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Aijun Yang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong, No 28 XianNing West Road, Xi'an, Shanxi 710049, China
| | - Xiangyu Tan
- Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming, Yunnan 650217, China
| | - Jifeng Chu
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong, No 28 XianNing West Road, Xi'an, Shanxi 710049, China
| | - Yifan Zhang
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Yongxu Yan
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Ju Tang
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Hongye Yuan
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China
| | - Xiaoxing Zhang
- Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan, Hubei 430068, China
| | - Song Xiao
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
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Cao Z, Sun Y, Dong F. Mechanism of Interfacial Molecular Interactions Reveals the Intrinsic Factors for the Highly Enhanced Sensing Performance of Ag-Loaded Co 3O 4. ACS Sens 2024; 9:2558-2566. [PMID: 38664913 DOI: 10.1021/acssensors.4c00277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The noble metal-loaded strategy can effectively improve the gas-sensing performances of metal oxide sensors. However, the gas-solid interfacial interactions between noble metal-loaded sensing materials and gaseous species remain unclear, posing a significant challenge in correlating the physical and chemical processes during gas sensing. In this study, in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and in situ Raman spectroscopy were conducted to collaboratively investigate the interfacial interactions involved in the ethanol gas-sensing processes over Co3O4 and Ag-loaded Co3O4 sensors. In situ DRIFTS revealed differences in the compositions and quantities of sensing reaction products, as well as in the adsorption-desorption interactions of surface species, among Co3O4 and Ag-loaded Co3O4 materials. In parallel, in situ Raman spectroscopy demonstrated that the ethanol atmosphere can modulate the electron scattering of Ag-loaded Co3O4 materials but not of raw Co3O4. In situ experimental results revealed the intrinsic reason for the highly enhanced sensing performances of the Ag-loaded Co3O4 sensors toward ethanol gas, including a decreased optimal working temperature (from 250 to 150 °C), an improved gas response level (from 24 to 257), and accelerated gas recovery dynamics. This work provides an effective platform to investigate the interfacial interactions of sensing processes at the molecular level and further advances the development of high-performance gas sensors.
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Affiliation(s)
- Zhengmao Cao
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yanjuan Sun
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Fan Dong
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
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Lim H, Kwon H, Kang H, Jang JE, Kwon HJ. Laser-Induced and MOF-Derived Metal Oxide/Carbon Composite for Synergistically Improved Ethanol Sensing at Room temperature. NANO-MICRO LETTERS 2024; 16:113. [PMID: 38334829 PMCID: PMC10858016 DOI: 10.1007/s40820-024-01332-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/26/2023] [Indexed: 02/10/2024]
Abstract
Advancements in sensor technology have significantly enhanced atmospheric monitoring. Notably, metal oxide and carbon (MOx/C) hybrids have gained attention for their exceptional sensitivity and room-temperature sensing performance. However, previous methods of synthesizing MOx/C composites suffer from problems, including inhomogeneity, aggregation, and challenges in micropatterning. Herein, we introduce a refined method that employs a metal-organic framework (MOF) as a precursor combined with direct laser writing. The inherent structure of MOFs ensures a uniform distribution of metal ions and organic linkers, yielding homogeneous MOx/C structures. The laser processing facilitates precise micropatterning (< 2 μm, comparable to typical photolithography) of the MOx/C crystals. The optimized MOF-derived MOx/C sensor rapidly detected ethanol gas even at room temperature (105 and 18 s for response and recovery, respectively), with a broad range of sensing performance from 170 to 3,400 ppm and a high response value of up to 3,500%. Additionally, this sensor exhibited enhanced stability and thermal resilience compared to previous MOF-based counterparts. This research opens up promising avenues for practical applications in MOF-derived sensing devices.
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Affiliation(s)
- Hyeongtae Lim
- Department of Electrical Engineering and Computer Science, DGIST, Daegu, 42988, South Korea
- Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea
| | - Hyeokjin Kwon
- Department of Electrical Engineering and Computer Science, DGIST, Daegu, 42988, South Korea
- Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea
| | - Hongki Kang
- Department of Electrical Engineering and Computer Science, DGIST, Daegu, 42988, South Korea
| | - Jae Eun Jang
- Department of Electrical Engineering and Computer Science, DGIST, Daegu, 42988, South Korea
| | - Hyuk-Jun Kwon
- Department of Electrical Engineering and Computer Science, DGIST, Daegu, 42988, South Korea.
- Convergence Research Advanced Centre for Olfaction, DGIST, Daegu, 42988, South Korea.
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Liu H, Li S, Wang L, Yang S, Zhang Y. Synthesis and characterization of ZrO 2-ZnO heterojunction composite for isopropanol detection. RSC Adv 2024; 14:2983-2992. [PMID: 38239449 PMCID: PMC10794953 DOI: 10.1039/d3ra06701g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/23/2023] [Indexed: 01/22/2024] Open
Abstract
We prepared ZrO2-ZnO heterojunction composites by a simple hydrothermal method as materials sensitive to isopropanol gas. The 5% ZrO2-ZnO sample presented a uniform rod-like structure. The optimum operating temperature, sensitivity and response/recovery times were measured to investigate the response of ZrO2-ZnO composites to isopropanol. The sensor based on 5% ZrO2-ZnO composites at an optimum temperature of 260 °C had a response to 100 ppm isopropanol of up to 172.46, which was about 3.6 times higher than that of pure ZnO. The sensor also exhibited fast response and recovery times of 5 s and 11 s, respectively. The gas-sensitive properties can be attributed to the rod-like structure, heterojunction structure and catalytic activity of ZrO2. These results would contribute in expanding the application of ZrO2 in gas sensors.
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Affiliation(s)
- Hang Liu
- School of Electrical and Computer Engineering, Jilin Jianzhu University Changchun 130118 China
| | - Shenghui Li
- School of Electrical and Computer Engineering, Jilin Jianzhu University Changchun 130118 China
| | - Lvqing Wang
- School of Electrical and Computer Engineering, Jilin Jianzhu University Changchun 130118 China
| | - Shengjue Yang
- School of Electrical and Computer Engineering, Jilin Jianzhu University Changchun 130118 China
| | - Yuhong Zhang
- School of Electrical and Computer Engineering, Jilin Jianzhu University Changchun 130118 China
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Cao Y, Lu K, Chen Y, Zheng Q, Huang C, Jia N. In 2O 3/Bi 2S 3 S-scheme Heterojunction-Driven Molecularly Imprinted Photoelectrochemical Sensor for Ultrasensitive Detection of Florfenicol. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58397-58405. [PMID: 38053369 DOI: 10.1021/acsami.3c13406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Florfenicol (FF) raises significant human health and environmental concerns due to its toxicity to the hematology system and the potential spread of antibiotic-resistant genes. Here, a highly sensitive molecularly imprinted photoelectrochemical (PEC) sensor, featuring an In2O3/Bi2S3 S-scheme heterojunction, is proposed to detect FF without an external voltage supply. Compared with conventional II-type heterojunctions, S-scheme heterojunctions efficiently promote carrier separation and enhance the redox capability of the photocatalytic system. This allows more dissolved O2 and H2O molecules to participate in the redox reaction, resulting in an amplified and stabilized photocurrent response. The electron transfer in the S-scheme heterojunction is confirmed via electron spin resonance (ESR). With the molecular imprinting technique, this PEC platform exhibits exceptional selectivity, wide linear range (1.0 × 10-4-1.0 × 104 ng mL-1), low detection limit (6.4 × 10-5 ng mL-1), and applicability in real milk and chicken samples. This work not only showcases a PEC platform for accurately and portably detecting drugs but also proposes a viable approach for designing S-scheme heterojunctions in sensing analysis.
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Affiliation(s)
- Yuyan Cao
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Kening Lu
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Yang Chen
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Qi Zheng
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Chusen Huang
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Nengqin Jia
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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Ikim MI, Gromov VF, Gerasimov GN, Spiridonova EY, Erofeeva AR, Kurmangaleev KS, Polunin KS, Ilegbusi OJ, Trakhtenberg LI. Structure, Conductivity, and Sensor Properties of Nanosized ZnO-In 2O 3 Composites: Influence of Synthesis Method. MICROMACHINES 2023; 14:1685. [PMID: 37763848 PMCID: PMC10535064 DOI: 10.3390/mi14091685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/25/2023] [Accepted: 08/27/2023] [Indexed: 09/29/2023]
Abstract
The influence of the method used for synthesizing ZnO-In2O3 composites (nanopowder mixing, impregnation, and hydrothermal method) on the structure, conductivity, and sensor properties is investigated. With the nanopowder mixing, the size of the parent nanoparticles in the composite remains practically unchanged in the range of 50-100 nm. The impregnation composites consist of 70 nm In2O3 nanoparticles with ZnO nanoclusters < 30 nm in size located on its surface. The nanoparticles in the hydrothermal composites have a narrow size distribution in the range of 10-20 nm. The specific surface of hydrothermal samples is five times higher than that of impregnated samples. The sensor response of the impregnated composite to 1100 ppm H2 is 1.3-1.5 times higher than the response of the mixed composite. Additives of 15-20 and 85 wt.% ZnO to mixed and impregnated composites lead to an increase in the response compared with pure In2O3. In the case of hydrothermal composite, up to 20 wt.% ZnO addition leads to a decrease in response, but 65 wt.% ZnO addition increases response by almost two times compared with pure In2O3. The sensor activity of a hydrothermal composite depends on the phase composition of In2O3. The maximum efficiency is reached for the composite containing cubic In2O3 and the minimum for rhombohedral In2O3. An explanation is provided for the observed effects.
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Affiliation(s)
- Mariya I Ikim
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Vladimir F Gromov
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Genrikh N Gerasimov
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Elena Y Spiridonova
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Anastasiya R Erofeeva
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Kairat S Kurmangaleev
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Kirill S Polunin
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
| | - Olusegun J Ilegbusi
- Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USA
| | - Leonid I Trakhtenberg
- N.N. Semenov Federal Research Center for Chemical Physics of RAS, Moscow 119991, Russia
- Chemical Faculty, Lomonosov Moscow State University, Moscow 119991, Russia
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7
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Li C, Choi PG, Masuda Y. Large-lateral-area SnO 2 nanosheets with a loose structure for high-performance acetone sensor at the ppt level. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131592. [PMID: 37167866 DOI: 10.1016/j.jhazmat.2023.131592] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/24/2023] [Accepted: 05/05/2023] [Indexed: 05/13/2023]
Abstract
Gas sensors with high sensitivity and high selectivity are required in practical applications to distinguish between target molecules in the detection of volatile organic compounds, real-time security alerts, and clinical diagnostics. Semiconducting tin oxide (SnO2) is highly regarded as a gas-sensing material due to its exceptional responsiveness to changes in gaseous environments and outstanding chemical stability. Herein, we successfully synthesized a large-lateral-area SnO2 nanosheet with a loose structure as a gas sensing material by a one-step facile aqueous solution process without a surfactant or template. The SnO2 sensor exhibited a remarkable sensitivity (Ra/Rg = 1.33) at 40 ppt for acetone, with a theoretical limit of detection of 1.37 ppt, which is the lowest among metal oxide semiconductor-based gas sensors. The anti-interference ability of acetone was higher than those of pristine SnO2 and commercial sensors. These sensors also demonstrated perfect reproducibility and long-term stability of 100 days. The ultrasensitive response of the SnO2 nanosheets toward acetone was attributed to the specific loose large lateral area structure, small grain size, and metastable (101) crystal facets. Considering these advantages, SnO2 nanosheets with larger lateral area sensors have great potential for the detection and monitoring of acetone.
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Affiliation(s)
- Chunyan Li
- National Institute of Advanced Industrial Science and Technology (AIST), 4-205 Sakurazaka, Moriyama, Nagoya, Aichi 463-8560, Japan
| | - Pil Gyu Choi
- National Institute of Advanced Industrial Science and Technology (AIST), 4-205 Sakurazaka, Moriyama, Nagoya, Aichi 463-8560, Japan
| | - Yoshitake Masuda
- National Institute of Advanced Industrial Science and Technology (AIST), 4-205 Sakurazaka, Moriyama, Nagoya, Aichi 463-8560, Japan.
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Esmaeili A, Hasan Kiadeh SP, Pirbazari AE, Khalil Saraei FE, Pirbazari AE, Derakhshesh A, Tabatabai-Yazdi FS. CdS nanocrystallites sensitized ZnO nanosheets for visible light induced sonophotocatalytic/photocatalytic degradation of tetracycline: From experimental results to a generalized model based on machine learning methods. CHEMOSPHERE 2023; 332:138852. [PMID: 37146776 DOI: 10.1016/j.chemosphere.2023.138852] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/30/2023] [Accepted: 05/03/2023] [Indexed: 05/07/2023]
Abstract
CdS/ZnO nanosheets heterostructures ((x)CdS/ZNs) with different mole ratios of Cd/Zn ((x) = 0.2, 0.4, and 0.6) were synthesized by the impregnation-calcination method. PXRD patterns showed that the (100) diffraction of ZNs was the most significant in the (x)CdS/ZNs heterostructures, and it confirmed that CdS nanoparticles (in cubic phase) occupied the (101) and (002) crystal facets of ZNs with hexagonal wurtzite crystal phase. UV-Vis DRS results indicated that CdS nanoparticles decreased the band gap energy of ZNs (2.80-2.11 eV) and extended the photoactivity of ZNs to the visible light region. The vibrations of ZNs were not observed clearly in the Raman spectra of (x)CdS/ZNs due to the extensive coverage of CdS nanoparticles shielding the deeper-laying ZNs from Raman response. The photocurrent of (0.4) CdS/ZNs photoelectrode reached 33 μA, about 82 times higher than that for ZNs (0.4 μA, 0.1 V vs Ag/AgCl). The formation of an n-n junction at the (0.4) CdS/ZNs reduced the recombination of electron-hole pairs and increased the degradation performance of the as-prepared (0.4) CdS/ZNs heterostructure. The highest percentage removal of tetracycline (TC) in the sonophotocatalytic/photocatalytic processes was obtained by (0.4) CdS/ZNs under visible light. The quenching tests showed that O2•-, h+, and OH• were the main active species in the degradation process. The degradation percentage decreased negligibly in the sonophotocatalytic (84%-79%) compared to the photocatalytic (90%-72%) process after four re-using runs due to the presence of ultrasonic waves. For the estimation of degradation behavior, two machine learning methods were applied. The comparison between the ANN and GBRT models evidenced that both models had high prediction accuracy and could be used for predicting and fitting the experimental data of the %removal of TC. The excellent sonophotocatalytic/photocatalytic performance and stability of the fabricated (x)CdS/ZNs catalysts made them promising candidates for wastewater purification.
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Affiliation(s)
- Amin Esmaeili
- Department of Chemical Engineering, College of Engineering Technology, University of Doha for Science and Technology, 24449, Arab League St, Doha, Qatar.
| | - Shideh Pourranjabar Hasan Kiadeh
- Department of Chemical Engineering, College of Engineering Technology, University of Doha for Science and Technology, 24449, Arab League St, Doha, Qatar; Hybrid Nanomaterials & Environment Lab, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581- 39115, Iran; Data Mining Research Group, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581-39115, Iran
| | - Azadeh Ebrahimian Pirbazari
- Hybrid Nanomaterials & Environment Lab, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581- 39115, Iran.
| | - Fatemeh Esmaeili Khalil Saraei
- Data Mining Research Group, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581-39115, Iran.
| | | | - Ali Derakhshesh
- Data Mining Research Group, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581-39115, Iran
| | - Fatemeh-Sadat Tabatabai-Yazdi
- Hybrid Nanomaterials & Environment Lab, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581- 39115, Iran; Data Mining Research Group, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, 43581-39115, Iran
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Sun Y, Wang B, Wang B, Zhao Z, Zhang W, Zhang W, Suematsu K, Hu J. Construction of Flower-like PtO x@ZnO/In 2O 3 Hollow Microspheres for Ultrasensitive and Rapid Trace Detection of Isopropanol. ACS APPLIED MATERIALS & INTERFACES 2023; 15:12041-12051. [PMID: 36811457 DOI: 10.1021/acsami.2c20746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The design of a highly effective isopropanol gas sensor with high response and trace detection capability is extremely important for environmental surveillance and human health. Here, novel flower-like PtOx@ZnO/In2O3 hollow microspheres were prepared by a three-step approach. The hollow structure was composed of an In2O3 shell inside and layered ZnO/In2O3 nanosheets outside with PtOx nanoparticles (NPs) on the surface. Meanwhile, the gas sensing performances of the ZnO/In2O3 composite with different Zn/In ratios and PtOx@ZnO/In2O3 composites were evaluated and compared systematically. The measurement results indicated that the ratio of Zn/In affected the sensing performance and the ZnIn2 sensor presented a higher response, which was then modified with PtOx NPs to further enhance its sensing property. The Pt@ZnIn2 sensor exhibited outstanding isopropanol detection performance with ultrahigh response values under 22 and 95% relative humidity (RH). In addition, it also showed a rapid response/recovery speed, good linearity, and low theoretical limit of detection (LOD) regardless of being under a relatively dry or ultrahumid atmosphere. The enhancement of isopropanol sensing properties might be ascribed to the unique structure of PtOx@ZnO/In2O3, heterojunctions between the components, and catalytic effect of Pt NPs.
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Affiliation(s)
- Yongjiao Sun
- Center of Nano Energy and Devices, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Baoxia Wang
- Center of Nano Energy and Devices, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Bingliang Wang
- Center of Nano Energy and Devices, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zhenting Zhao
- Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516001, P. R. China
| | - Wenlei Zhang
- Center of Nano Energy and Devices, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Wendong Zhang
- Center of Nano Energy and Devices, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Koichi Suematsu
- Department of Advanced Materials Science and Engineering, Faculty of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - Jie Hu
- Center of Nano Energy and Devices, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, P. R. China
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Jiang Q, Guo X, Wang C, Jia L, Zhao Z, Yang R, Zhang Y, Deng Q. Ultra-responsive and Selective Ethanol and Acetone Sensor Based on Ce-doped Co3O4 Microspheres Assembled by Submicron Spheres With Multilayer Core-shell Structure. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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11
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Okai Amu-Darko JN, Hussain S, Zhang X, Alothman AA, Ouladsmane M, Nazir MT, Qiao G, Liu G. Metal-organic frameworks-derived In 2O 3/ZnO porous hollow nanocages for highly sensitive H 2S gas sensor. CHEMOSPHERE 2023; 314:137670. [PMID: 36581114 DOI: 10.1016/j.chemosphere.2022.137670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/28/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
The detection of hydrogen sulfide (H2S) is critical because of its potential harm and widespread presence in the oil and gas sectors. The zeolitic imidazolate framework-8 (ZIF-8) derived ZnO nanostructures manufactured as gas sensors have exceptional sensitivity and selectivity for H2S gas. In/Zn-ZIF-8 template material was synthesized by a simple one-step co-precipitation method followed by thermal annealing in air. The heat treatment resulted in In2O3/ZnO nanostructures with mixed heterostructures. The crystal structure (XRD), morphology (SEM/TEM), chemical state (XPS), surface area (BET), etc were investigated to ascertain the nature of the as-prepared material. SEM imagery revealed that the as-prepared In2O3/ZnO sensitive material had a microstructure of porous hollow nanocages with an average particle size of about 200 nm, which is beneficial to the diffusion and adsorption of gas molecules. The gas sensing performance test results of the In2O3/ZnO hollow nanocages show that their response to H2S gas is significantly improved 67.5 @50 ppm H2S (about 11 times that of pure ZnO nanocages) at an optimal temperature of 200 °C, better selectivity, lower theoretical detection limit and good linearity between gas concentration and response values. The enhanced gas sensing feat to H2S gas is mainly attributed to the formation of n-n heterojunction and the wide surface area of the newly formed In2O3/ZnO porous hollow nanocages.
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Affiliation(s)
| | - Shahid Hussain
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Xiangzhao Zhang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Asma A Alothman
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohamed Ouladsmane
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - M Tariq Nazir
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Guanjun Qiao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Guiwu Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
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Shao W, Lu J, Zheng Z, Liu R, Wang X, Zhao Z, Lu Y, Zhu L, Ye Z. Heterojunctions on Ta 2O 5@MWCNT for Ultrasensitive Ethanol Sensing at Room Temperature. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4315-4328. [PMID: 36629246 DOI: 10.1021/acsami.2c19080] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Heterojunctions of Ta2O5 and multiwalled carbon nanotubes (MWCNTs) have been successfully synthesized by a facile and cost-effective hydrothermal method, with a super thin and uniform Ta2O5 shell wrapped around the MWCNT. The combination of Ta2O5 and MWCNTs at the interface not only modifies the morphology but also forms the p-n heterojunction, which contributes to the reconstruction of band structure, as well as the low resistance of matrix and highly chemisorbed oxygen content. The Ta2O5@MWCNT p-n heterojunction exhibits ultrasensitive performance to ethanol at room temperature, with a response of 3.15 toward 0.8 ppm ethanol and a detection limit of 0.173 ppm. The sensor has a high reproducibility at various concentrations of ethanol, superior selectivity to other gases, and long-term stability. The strategy of hybriding metal oxide semiconductors with MWCNT promises to provide a feasible and further developable pathway for high-performance room-temperature gas sensors.
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Affiliation(s)
- Wenyi Shao
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Jianguo Lu
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou325006, China
| | - Zicheng Zheng
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Rumin Liu
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Xinchang Wang
- Key Laboratory of Material Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou450052, China
| | - Zhenyun Zhao
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Yangdan Lu
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Liping Zhu
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou325006, China
| | - Zhizhen Ye
- State Key Laboratory of Silicon Materials, Key Laboratory for Biomedical Engineering of Ministry of Education, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou325006, China
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13
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Duan X, Wang Q, Ning Z, Tu S, Li Y, Sun C, Zhao X, Chang L. Fabrication and Characterization of PEG-In2O3 Modified PbO2 Anode for Electrochemical Degradation of Metronidazole. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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14
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Zhang J, Li X, Pan Q, Liu T, Wang Q. Highly Selective Gas Sensor Based on Litchi-like g-C 3N 4/In 2O 3 for Rapid Detection of H 2. SENSORS (BASEL, SWITZERLAND) 2022; 23:148. [PMID: 36616743 PMCID: PMC9824192 DOI: 10.3390/s23010148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Hydrogen (H2) has gradually become a substitute for traditional energy, but its potential danger cannot be ignored. In this study, litchi-like g-C3N4/In2O3 composites were synthesized by a hydrothermal method and used to develop H2 sensors. The morphology characteristics and chemical composition of the samples were characterized to analyze the gas-sensing properties. Meanwhile, a series of sensors were tested to evaluate the gas-sensing performance. Among these sensors, the sensor based on the 3 wt% g-C3N4/In2O3 (the mass ratio of g-C3N4 to In2O3 is 3:100) showeds good response properties to H2, exhibiting fast response/recovery time and excellent selectivity to H2. The improvement in the gas-sensing performance may be related to the special morphology, the oxygen state and the g-C3N4/In2O3 heterojunction. To sum up, a sensor based on 3 wt% g-C3N4/In2O3 exhibits preeminent performance for H2 with high sensitivity, fast response, and excellent selectivity.
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Affiliation(s)
- Ji Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, College of Information and Communication Engineering, Hainan University, Haikou 570228, China
| | - Xu Li
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Qinhe Pan
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Tong Liu
- School of Electronic and Information Engineering, Qingdao University, 308 Ningxia Street, Qingdao 266071, China
| | - Qingji Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, College of Information and Communication Engineering, Hainan University, Haikou 570228, China
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15
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Tang Y, Huang Y, Zou HY, Wu L, Xiao ZL, Zeng JL, Sun LX, Yu D, Cao Z. ZnO@CuO hollow nanosphere-based composites used for the sensitive detection of hydrogen sulfide with long-term stability. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2866-2875. [PMID: 35856488 DOI: 10.1039/d2ay00847e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, zinc oxide@cupric oxide hollow nanospheres (ZnO@CuO HNS, 330 nm in diameter) were successfully prepared by a hard-template method using amino-phenolformaldehyde resin spheres (APF) as the templates. A new type of thin-film gas sensor toward hydrogen sulfide (H2S) was fabricated by means of drop-coating on the gold electrode of an alumina ceramic tube. The microstructure and morphology of the nanosphere composites were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the gas-sensing performance of the composites toward the detection of H2S were investigated. The ZnO@CuO nanocomposite with a hollow structure exhibited good gas-sensing properties. Under the optimum operating temperature of 260 °C, ambient temperature of 30 °C, and ambient humidity of 70%, the linear response of the sensor to H2S was in the concentration range of 0.1-100 ppm, and its detection limit reached 0.0611 ppm, with a quick response time of 78 s. Also, the sensor possessed good repeatability, selectivity, and stability. The long-term stability and run duration of such sensors were pronounced, with only a 1.9% reduction in the signal after the continuous monitoring of H2S gas in a pig farm for 18 months using Alibaba's cloud remote transmission system, which presents an important practical application prospect in atmosphere environment monitoring on livestock-raising fields.
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Affiliation(s)
- Yi Tang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Ying Huang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Hao-Yun Zou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Ling Wu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Zhong-Liang Xiao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Ju-Lan Zeng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Li-Xian Sun
- School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| | - Donghong Yu
- Department of Chemistry and Bioscience, Aalborg University, DK-9220 Aalborg East, Denmark
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
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16
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Zhang Y, Jiang Y, Duan Z, Wu Y, Zhao Q, Liu B, Huang Q, Yuan Z, Li X, Tai H. Edge-enriched MoS 2 nanosheets modified porous nanosheet-assembled hierarchical In 2O 3 microflowers for room temperature detection of NO 2 with ultrahigh sensitivity and selectivity. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128836. [PMID: 35421674 DOI: 10.1016/j.jhazmat.2022.128836] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Nitrogen dioxide (NO2) is one of the most hazardous toxic pollutants to human health and the environment. However, deficiencies of low sensitivity and poor selectivity at room temperature (RT) restrain the application of NO2 sensors. Herein, the edge-enriched MoS2 nanosheets modified porous nanosheets-assembled three-dimensional (3D) In2O3 microflowers have been synthesized to improve the sensitivity and selectivity of NO2 detection at RT. The results show that the In2O3/MoS2 composite sensor exhibits a response as high as 343.09-5 ppm NO2, which is 309 and 72.5 times higher than the sensors based on the pristine MoS2 and In2O3. The composite sensor also shows short recovery time (37 s), excellent repeatability and long-term stability. Furthermore, the response of the In2O3/MoS2 sensor to NO2 is at least 30 times higher than that of other gases, proving the ultrahigh selectivity of the sensor. The outstanding sensing performance of the In2O3/MoS2 sensor can be attributed to the synergistic effect and abundant active sites originating from the p-n heterojunction, exposed edge structures and the designed 2D/3D hybrid structure. The strategy proposed herein is expected to provide a useful reference for the development of high-performance RT NO2 sensors.
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Affiliation(s)
- Yajie Zhang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Yadong Jiang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Zaihua Duan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Yingwei Wu
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Qiuni Zhao
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Bohao Liu
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Qi Huang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Zhen Yuan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Xian Li
- Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
| | - Huiling Tai
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China.
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17
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One-Step Hydrothermal Synthesis of 3D Interconnected rGO/In2O3 Heterojunction Structures for Enhanced Acetone Detection. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10070270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Acetone detection is of great significance for environmental monitoring or diagnosis of diabetes. Nevertheless, fast and sensitive detection of acetone at low temperatures remains challenging. Herein, a series of rGO-functionalized three-dimensional (3D) In2O3 flower-like structures were designed and synthesized via a facile hydrothermal method, and their acetone-sensing properties were systematically investigated. Compared to the pure 3D In2O3 flower-like structures, the rGO-functionalized 3D In2O3 flower-like structures demonstrated greatly improved acetone-sensing performance at relatively low temperatures. In particular, the 5-rGO/In2O3 sensor with an optimized decoration exhibited the highest response value (5.6) to 10 ppm acetone at 150 °C, which was about 2.3 times higher than that of the In2O3 sensor (2.4 at 200 °C). Furthermore, the 5-rGO/In2O3 sensor also showed good reproducibility, a sub-ppm-level detection limit (1.3 to 0.5 ppm), fast response and recovery rates (3 s and 18 s, respectively), and good long-term stability. The extraordinary acetone-sensing performance of rGO/In2O3 composites can be attributed to the synergistic effect of the formation of p-n heterojunctions between rGO and In2O3, the large specific surface area, the unique flower-like structures, and the high conductivity of rGO. This work provides a novel sensing material design strategy for effective detection of acetone.
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18
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Li D, Li Y, Wang X, Sun G, Cao J, Wang Y. Improved TEA Sensitivity and Selectivity of In2O3 Porous Nanospheres by Modification with Ag Nanoparticles. NANOMATERIALS 2022; 12:nano12091532. [PMID: 35564240 PMCID: PMC9105240 DOI: 10.3390/nano12091532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/17/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022]
Abstract
A highly sensitive and selective detection of volatile organic compounds (VOCs) by using gas sensors based on metal oxide semiconductor (MOS) has attracted increasing interest, but still remains a challenge in gas sensitivity and selectivity. In order to improve the sensitivity and selectivity of In2O3 to triethylamine (TEA), herein, a silver (Ag)-modification strategy is proposed. Ag nanoparticles with a size around 25–30 nm were modified on pre-synthesized In2O3 PNSs via a simple room-temperature chemical reduction method by using NaBH4 as a reductant. The results of gas sensing tests indicate that after functionalization with Ag, the gas sensing performance of In2O3 PNSs for VOCs, especially for TEA, was remarkably improved. At a lower optimal working temperature (OWT) of 300 °C (bare In2O3 sensor: 320 °C), the best Ag/In2O3-2 sensor (Ag/In2O3 PNSs with an optimized Ag content of 2.90 wt%) shows a sensitivity of 116.86/ppm to 1–50 ppm TEA, about 170 times higher than that of bare In2O3 sensor (0.69/ppm). Significantly, the Ag/In2O3-2 sensor can provide a response (Ra/Rg) as high as 5697 to 50 ppm TEA, which is superior to most previous TEA sensors. Besides lower OWT and higher sensitivity, the Ag/In2O3-2 sensor also shows a remarkably improved selectivity to TEA, whose selectivity coefficient (STEA/Sethanol) is as high as 5.30, about 3.3 times higher than that of bare In2O3 (1.59). The sensitization mechanism of Ag on In2O3 is discussed in detail.
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Affiliation(s)
- Dengke Li
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
- The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo 454000, China; (J.C.); (Y.W.)
| | - Yanwei Li
- The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo 454000, China; (J.C.); (Y.W.)
- School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
- Correspondence: (Y.L.); (G.S.); Tel.: +86-03913986952 (G.S.)
| | - Xiaohua Wang
- School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
| | - Guang Sun
- The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo 454000, China; (J.C.); (Y.W.)
- School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
- Correspondence: (Y.L.); (G.S.); Tel.: +86-03913986952 (G.S.)
| | - Jianliang Cao
- The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo 454000, China; (J.C.); (Y.W.)
- School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
| | - Yan Wang
- The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo 454000, China; (J.C.); (Y.W.)
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19
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Preparation and gas-sensitive properties of hollow Zn2SnO4/SnO2 nano-cubes. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Shihabudeen PK, Roy Chaudhuri A. Nitrogen doped In 2O 3-ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors. NANOSCALE 2022; 14:5185-5193. [PMID: 35311883 DOI: 10.1039/d2nr00455k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanocomposite metal oxide thin films exhibit promising qualities in the field of gas sensors due to the opportunities provided by the heterointerface formation. In this work, we present the synthesis of nitrogen doped mesoporous In2O3-ZnO nanocomposite thin films by a simple wet chemical method using urea as the nitrogen precursor. SEM investigation suggests the formation of mesoporous nanocomposite thin films, where the uniformity of the surface pore distribution depends on the relative proportion of In2O3 and ZnO in the composites. HRTEM investigation suggests the formation of sharp interfaces between N-In2O3 and N-ZnO grains in the nanocomposite thin films. The nanocomposite thin films have been tested for their ethanol sensing performance over an extensive range of temperatures, ethanol vapor concentrations and relative humidities. Nitrogen doped nanocomposite thin films with an equal proportion of In2O3 and ZnO exhibit excellent ethanol sensing performance at a reasonable operating temperature (∼94% at 200 °C for 50 ppm of ethanol), fast response time (∼two seconds), stability over time, enhanced resilience against humidity and selectivity to ethanol over various other volatile organic compounds. All the results indicated that nitrogen doped In2O3/ZnO nanocomposite thin films portray great possibilities in designing improved performance ethanol sensors.
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Affiliation(s)
- P K Shihabudeen
- Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, West Bengal, India.
| | - Ayan Roy Chaudhuri
- Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, West Bengal, India.
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Rong Q, Xiao B, Zeng J, Yu R, Zi B, Zhang G, Zhu Z, Zhang J, Wu J, Liu Q. Pt Single Atom-Induced Activation Energy and Adsorption Enhancement for an Ultrasensitive ppb-Level Methanol Gas Sensor. ACS Sens 2022; 7:199-206. [PMID: 34928579 DOI: 10.1021/acssensors.1c01959] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
As an important organic chemical raw material, methanol is used in various industries but is harmful to human health. Developing an effective and accurate detection device for methanol is an urgent need. Herein, we demonstrate a novel gas-sensing material with a Pt single atom supported on a porous Ag-LaFeO3@ZnO core-shell sphere (Ag-LaFeO3@ZnO-Pt) with a high specific surface area (192.08 m2·g-1). Based on this, the surface activity of the Ag-LaFeO3@ZnO-Pt gas sensor is enhanced obviously, which improved the working temperature and detection limit for methanol gas. Consequently, this sensor possesses an ultrahigh sensitivity of 453.02 for 5 ppm methanol gas at a working temperature of 86 °C and maintains a high sensitivity of 21.25 even at a concentration as low as 62 ppb. The sensitivity of Ag-LaFeO3@ZnO-Pt to methanol gas is increased by 6.69 times compared with the Ag-LaFeO3@ZnO core-shell sphere (Ag-LaFeO3@ZnO). Additionally, the minimum detection limit is found to be 3.27 ppb. Detailed theoretical calculations revealed that the unoccupied 5d state of Pt single atoms increases the adsorption and activation energy of methanol and oxygen, which facilities methanol gas-sensing performance. This work will provide a novel strategy to design high-performance gas-sensing materials.
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Affiliation(s)
- Qian Rong
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
- School of Chemistry and Environmental Sciences, Qujing Normal University, Qujing 655011, China
| | - Bin Xiao
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
| | - Jiyang Zeng
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
| | - Ruohan Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
| | - Baoye Zi
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
| | - Genlin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
| | - Zhongqi Zhu
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
| | - Jin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
| | - Jinsong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
| | - Qingju Liu
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, School of Materials and Energy, National Center for International Research on Photoelectric and Energy Materials, Yunnan University, Kunming 650091, China
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22
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Ying Z, Zhang T, Feng C, Wen F, Li L, Zheng X, Zheng P, Wang G. UV-enhanced NO 2gas sensors based on In 2O 3/ZnO composite material modified by polypeptides. NANOTECHNOLOGY 2022; 33:155501. [PMID: 34963108 DOI: 10.1088/1361-6528/ac46b2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
This present study reported a high-performance gas sensor, based on In2O3/ZnO composite material modified by polypeptides, with a high sensibility to NO2, where the In2O3/ZnO composite was prepared by a one-step hydrothermal method. A series of results through material characterization technologies showed the addition of polypeptides can effectively change the morphology and size of In2O3/ZnO crystals, and effectively improve the sensing performance of the gas sensors. Due to the single shape and small size, In2O3/ZnO composite modified by polypeptides increased the active sites on the surface. At the same time, the gas sensing properties of four different ratios of polypeptide-modified In2O3/ZnO gas sensors were tested. It was found that the In2O3/ZnO-10 material showed the highest response, excellent selectivity, and good stability at room temperature under UV light. In addition, the response of the In2O3/ZnO-10 gas sensor showed a strong linear relationship with the NO2gas concentration. When the NO2gas concentration was 20 ppm, the response time was as quick as 19 s, and the recovery time was 57 s. Finally, based on the obtained experimental characterization results and energy band structure analysis, a possible gas sensing mechanism is proposed.
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Affiliation(s)
- Zhihua Ying
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Teng Zhang
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Chao Feng
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Fei Wen
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Lili Li
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Xiaolong Zheng
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Peng Zheng
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - Gaofeng Wang
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
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23
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Wang C, Du L, Xing X, Feng D, Tian Y, Li Z, Zhao X, Yang D. Radial ZnO nanorods decorating Co 3O 4 nanoparticles for highly selective and sensitive detection of the 3-hydroxy-2-butanone biomarker. NANOSCALE 2022; 14:482-491. [PMID: 34908094 DOI: 10.1039/d1nr06729j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Indirect monitoring of Listeria monocytogenes (LM) via a gas sensor that can detect the bacterial metabolite 3-hydroxy-2-butanone (3H-2B) is a newly emerged strategy. However, such sensors are required simultaneously endow with outstanding selectivity, high sensitivity, and ppb-level detection limit, which remains technologically challenging. Herein, we have developed highly selective and sensitive 3H-2B sensors that consist of zinc oxide nanorods decorated with cobaltosic oxide nanoparticles (ZnO NRs/Co3O4 NPs), which have been synthesized by combined optimized hydrothermal and annealing process. Specifically, the ZnO NRs/Co3O4 NPs exhibit ultrahigh sensitivity to 5 ppm 3H-2B (Ra/Rg = 550 at 260 °C). The sensor prototypes enable detection as low as 10 ppb 3H-2B, show excellent long-term stability, and present remarkable selectivity through interfering selectivity survey and principal component analysis (PCA). Such outstanding sensing performance is attributed to the modulated electron depletion layer by n-p heterojunctions and abundant gas diffusion pathways via the radial architecture, which was verified via electrochemical impedance spectroscopy test, Mott-Schottky measurement, and ultraviolet-visible absorption analysis. Our highly selective and sensitive ZnO NRs/Co3O4 NPs have the potential in the real-time detection of 3H-2B biomarker.
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Affiliation(s)
- Chen Wang
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Lingling Du
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Xiaxia Xing
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Dongliang Feng
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Yingying Tian
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Zhenxu Li
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Xinhua Zhao
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
| | - Dachi Yang
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
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Wu X, Wang H, Wang J, Wang D, Shi L, Tian X, Sun J. VOCs gas sensor based on MOFs derived porous Au@Cr2O3-In2O3 nanorods for breath analysis. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127752] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Shi T, Hou H, Hussain S, Ge C, Alsaiari MA, Alkorbi AS, Liu G, Alsaiari R, Qiao G. Efficient detection of hazardous H 2S gas using multifaceted Co 3O 4/ZnO hollow nanostructures. CHEMOSPHERE 2022; 287:132178. [PMID: 34509024 DOI: 10.1016/j.chemosphere.2021.132178] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/28/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
The rapid increases in environmental hazardous gases have laid dangerous effects on human health. The detection of such pollutants gases is mandatory using various optimal techniques. In this paper, porous multifaceted Co3O4/ZnO nanostructures are synthesized by pyrolyzing sacrificial template of core-shell double zeolitic imidazolate frameworks (ZIFs) for gas sensing applications. The fabricated exhibit superior gas sensor response, high selectivity, fast response/recovery times, and remarkable stability and sensitivity to H2S gas. In particular, the multifaceted Co3O4/ZnO nanostructures show a maximum response of 147 at 100 ppm of H2S under optimum conditions. The remarkable gas sensing performances are mainly ascribed to high porosity, wide surface area multifaceted nanostructures, presence of heterojunctions and catalytic activity of ZnO and Co3O4, which are beneficial for H2S gas sensors industry.
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Affiliation(s)
- Tengfei Shi
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Haigang Hou
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Shahid Hussain
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Chuanxin Ge
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mabkhoot A Alsaiari
- Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia
| | - Ali S Alkorbi
- Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia
| | - Guiwu Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Raiedhah Alsaiari
- Empty Quarter Research Unit, Department of Chemistry, College of Science and Art in Sharurah, Najran University, Sharurah, Saudi Arabia
| | - Guanjun Qiao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
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Lei M, Gao M, Yang X, Zou Y, Alghamdi A, Ren Y, Deng Y. Size-Controlled Au Nanoparticles Incorporating Mesoporous ZnO for Sensitive Ethanol Sensing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51933-51944. [PMID: 34110132 DOI: 10.1021/acsami.1c07322] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Zinc oxide (ZnO) as a commonly used semiconductor material has aroused extensive research attention in various fields, such as field-effect transistors, solar cells, luminescent devices, and sensors, because of its excellent light-electrical features and large exciton bonding energy. Herein, ultrasmall Au nanoparticles with tunable size decorated mesoporous ZnO nanospheres were synthesized via facile formaldehyde-assisted metal-ligand cross-linking strategy, where these active Au species could be transferred into Au nanoparticles in the frameworks by various reduction strategies. Typically, mesoporous ZnO-Au with a photoreduction technique showed superior ethanol sensing performance (ca. 159 for 50 ppm at 200 °C) because of its high surface area, dual-mesoporous structure, and interface effect (electron effect, surface catalytic/adsorption). Moreover, the mesoporous ZnO-Au composites by photoreduction show much better performance than those via H2 reduction and NaBH4 reduction, which is ascribed to the providential size of Au nanoparticles (ca. 6.6 nm) and abundant oxygen defects in the composites. In particular, the selectivity and sensitivity of mesoporous ZnO-Au far exceeds those of materials loaded with other noble metals (Pt, Pd, and Ag). The sensing mechanism of mesoporous ZnO-Au for ethanol is attributed to classical surface adsorption/catalytic reaction, where strong sensitization effect (electron and chemical) and the spillover effect of Au nanoparticles in the catalytic reaction cause superior ethanol sensing performances. In situ FTIR and GC-MS measurement revealed that the catalytic oxidation of ethanol follows the process of dehydrogenation and deep oxidation, that is, dehydrogenation to acetaldehyde, and then further oxidation to carbon dioxide and water.
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Affiliation(s)
- Mengli Lei
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Meiqi Gao
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Xuanyu Yang
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Yidong Zou
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Abdulaziz Alghamdi
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Yuan Ren
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
| | - Yonghui Deng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai 200433, China
- State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
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John RAB, Ruban Kumar A. A review on resistive-based gas sensors for the detection of volatile organic compounds using metal-oxide nanostructures. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108893] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Zhou T, Zhang T. Recent Progress of Nanostructured Sensing Materials from 0D to 3D: Overview of Structure-Property-Application Relationship for Gas Sensors. SMALL METHODS 2021; 5:e2100515. [PMID: 34928067 DOI: 10.1002/smtd.202100515] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/23/2021] [Indexed: 05/27/2023]
Abstract
Along with the progress of nanoscience and nanotechnology, nanomaterials with attractive structural and functional properties have gained more attention than ever before, especially in the field of electronic sensors. In recent years, the gas sensing devices have made great achievement and also created wide application prospects, which leads to a new wave of research for designing advanced sensing materials. There is no doubt that the characteristics are highly governed by the sensitive layers. For this reason, important advances for the outstanding, novel sensing materials with different dimensional structures including 0D, 1D, 2D, and 3D are reported and summarized systematically. The sensing materials cover noble metals, metal oxide semiconductors, carbon nanomaterials, metal dichalcogenides, g-C3 N4 , MXenes, and complex composites. Discussion is also extended to the relation between sensing performances and their structure, electronic properties, and surface chemistry. In addition, some gas sensing related applications are also highlighted, including environment monitoring, breath analysis, food quality and safety, and flexible wearable electronics, from current situation and the facing challenges to the future research perspectives.
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Affiliation(s)
- Tingting Zhou
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, P. R. China
| | - Tong Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, P. R. China
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Qin L, Mawignon FJ, Hussain M, Ange NK, Lu S, Hafezi M, Dong G. Economic Friendly ZnO-Based UV Sensors Using Hydrothermal Growth: A Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4083. [PMID: 34361276 PMCID: PMC8347016 DOI: 10.3390/ma14154083] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 01/09/2023]
Abstract
Ultraviolet (UV) sensors offer significant advantages in human health protection and environmental pollution monitoring. Amongst various materials for UV sensors, the zinc oxide (ZnO) nanostructure is considered as one of the most promising candidates due to its incredible electrical, optical, biomedical, energetic and preparing properties. Compared to other fabricating techniques, hydrothermal synthesis has been proven to show special advantages such as economic cost, low-temperature process and excellent and high-yield production. Here, we summarize the latest progress in research about the hydrothermal synthesis of ZnO nanostructures for UV sensing. We particularly focus on the selective hydrothermal processes and reveal the effect of key factors/parameters on ZnO architectures, such as the laser power source, temperature, growth time, precursor, seeding solution and bases. Furthermore, ZnO hydrothermal nanostructures for UV applications as well as their mechanisms are also summarized. This review will therefore enlighten future ideas of low-temperature and low-cost ZnO-based UV sensors.
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Affiliation(s)
- Liguo Qin
- Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Institute of Design Science and Basic Components, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (F.J.M.); (M.H.); (N.K.A.); (S.L.); (M.H.); (G.D.)
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Liu J, Zhang L, Cheng B, Fan J, Yu J. A high-response formaldehyde sensor based on fibrous Ag-ZnO/In 2O 3 with multi-level heterojunctions. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125352. [PMID: 33930945 DOI: 10.1016/j.jhazmat.2021.125352] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/19/2021] [Accepted: 02/05/2021] [Indexed: 05/14/2023]
Abstract
Timely detection of formaldehyde is pivotal because formaldehyde is slowly released from the indoor decorative materials, jeopardizing our healthy. Herein, a high-response formaldehyde gas sensor based on Ag-ZnO/In2O3 nanofibers was successfully fabricated. Compared with all the control samples, the hybrid exhibits superior sensitivity (0.65 ppm-1), excellent selectivity (≥ 12.5) and durable stability (the deviation value ≤ 3%). Particularly, an ultra-high response value of about 186 towards 100 ppm of formaldehyde at 260 °C was achieved, heading the list of outstanding candidates. Additionally, the limit of detection is as low as 9 ppb. The enhanced gas sensing properties can be mainly attributed to multi-level heterojunctions (n-n heterojunction and Ohmic junction) and the "spill-over" effect of Ag, ultimately increasing the adsorption of gas molecules on the surface of sensing material. This work verifies that proper design of multi-level heterojunctions significantly upgrade the sensing performance.
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Affiliation(s)
- Jingjing Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China
| | - Liuyang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China.
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China.
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Ethanol Sensing Properties and First Principles Study of Au Supported on Mesoporous ZnO Derived from Metal Organic Framework ZIF-8. SENSORS 2021; 21:s21134352. [PMID: 34202170 PMCID: PMC8272103 DOI: 10.3390/s21134352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/20/2021] [Accepted: 06/23/2021] [Indexed: 11/17/2022]
Abstract
It is of great significance to develop ethanol sensors with high sensitivity and low detection temperature. Hence, we prepared Au-supported material on mesoporous ZnO composites derived from a metal-organic framework ZIF-8 for the detection of ethanol gas. The obtained Au/ZnO materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (SEM), field emission transmission electron microscopy (TEM) and nitrogen adsorption and desorption isotherms. The results showed that the Au/ZnO-1.0 sample maintains a three-dimensional (3D) dodecahedron structure with a larger specific surface area (22.79 m2 g−1) and has more oxygen vacancies. Because of the unique ZIF structure, abundant surface defects and the formation of Au-ZnO Schottky junctions, an Au/ZnO-1.0 sensor has a response factor of 37.74 for 100 ppm ethanol at 250 °C, which is about 6 times that of pure ZnO material. In addition, the Au/ZnO-1.0 sensor has good selectivity for ethanol. According to density functional theory (DFT) calculations, the adsorption energy of Au/ZnO for ethanol (−1.813 eV) is significantly greater than that of pure ZnO (−0.217 eV). Furthermore, the adsorption energy for ethanol is greater than that of other gases.
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Wang Q, Wu H, Wang Y, Li J, Yang Y, Cheng X, Luo Y, An B, Pan X, Xie E. Ex-situ XPS analysis of yolk-shell Sb 2O 3/WO 3 for ultra-fast acetone resistive sensor. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125175. [PMID: 33516115 DOI: 10.1016/j.jhazmat.2021.125175] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/29/2020] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
The preparation of fast, highly responsive and reliable gas sensing devices for the detection of acetone gas is considered to be a key challenge for the development of accurate disease diagnosis systems through exhaled respiratory gases. In the paper, yolk shell Sb2O3/WO3 is synthesized and its gas sensing performance was studied by static test system. Special, the maximum response value of 1:1 Sb2O3/WO3 yolk-shell (WO3-1 YSL) sensor to 100 ppm acetone can reach as high as 50.0 at 200 ℃. And it also exhibits excellent response/recover time (4 s/5 s), low detection limit (2 ppm) and superior selectivity towards acetone. More importantly, in mixed selective gas test, the sensor shows high selectivity towards acetone. And the mechanism is analyzed by ex-situ XPS. The excellent gas-sensing performance can be attributed to unique yolk-shell structure, which facilitates the rapid transport of charge carriers from the surface to the bulk and provides more active sites for gas adsorption and desorption; the heterojunction between of Sb2O3 and WO3, which promotes oxygen pre-adsorption on the surface and increasing the interfacial potential; the increased oxygen vacancies which allowing more chemisorbed oxygen to form.
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Affiliation(s)
- Qiao Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Hongchang Wu
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Yanrong Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China.
| | - Jianpeng Li
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Yifan Yang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Xu Cheng
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Yibing Luo
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Beixi An
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Xiaojun Pan
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Erqing Xie
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China.
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Liu J, Zhu B, Zhang L, Fan J, Yu J. 0D/2D CdS/ZnO composite with n-n heterojunction for efficient detection of triethylamine. J Colloid Interface Sci 2021; 600:898-909. [PMID: 34058608 DOI: 10.1016/j.jcis.2021.05.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 01/04/2023]
Abstract
It is imperative to seek for novel materials with pronounced gas sensing performance towards triethylamine for the sake of human health. Herein, we successfully fabricate an outstanding triethylamine sensor based on CdS/ZnO composite with 0D/2D structure, which are prepared by in-situ growth of CdS quantum dots on ultra-thin ZnO nanosheets. The ratios between the two ingredients are adjusted and their effect is evaluated. The optimal sample exhibits the lowest operating temperature of 200 °C, the highest response value of ~20 and the fastest response time of 2 s. Besides, it also has the virtues of durable stability, excellent selectivity and superior anti-interference ability. The mechanism behind the aforementioned intriguing performance is investigated by X-ray photoelectron spectroscopy, Kelvin probe and density function theory (DFT) simulation. All the results verify that the enhanced gas sensing properties are derived from splendid 0D/2D structure, n-n heterojunction and large specific surface area. Additionally, this study opens an avenue for designing sensors with 0D/2D structure.
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Affiliation(s)
- Jingjing Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, PR China
| | - Liuyang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China.
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, PR China.
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Khatoon R, Rauf S, Haq MU, Attique S, Din SU, Ali N, Guo Y, Chen H, Tian Y, Lu J. Design of highly sensitive and selective ethanol sensor based on α-Fe 2O 3/Nb 2O 5 heterostructure. NANOTECHNOLOGY 2021; 32:195503. [PMID: 33470969 DOI: 10.1088/1361-6528/abdd5e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The introduction of heterostructures is a new approach in gas sensing due to their easy and quick transport of charges. Herein, facile hydrothermal and solid-state techniques are employed to synthesize an α-Fe2O3/Nb2O5 heterostructure. The morphology, microstructure, crystallinity and surface composition of the synthesized heterostructures are investigated by scanning electron microscope, transmission electron microscope, x-ray diffraction, x-ray photoelectron spectroscopy and Brunauer-Emmett-Teller analyses. The successful fabrication of the heterostructures was achieved via the mutual incorporation of α-Fe2O3 nanorods with Nb2O5 interconnected nanoparticles (INPs). A sensor based on the α-Fe2O3(0.09)/Nb2O5 heterostructure with a high surface area exhibited enhanced gas-sensing features, maintaining high selectivity and sensitivity, and a considerable recovery percentage towards ethanol gas. The sensing response of the α-Fe2O3(0.09)/Nb2O5 heterostructure at lower operating temperature (160 °C) is around nine times higher than a pure Nb2O5 (INP) sensor at 180 °C with the flow of 100 ppm ethanol gas. The sensors also show excellent selectivity, good long-term stability and a rapid response/recovery time (8s/2s, respectively) to ethanol. The superior electronic conductivity and upgraded sensitivity performance of gas sensors based on the α-Fe2O3(0.09)/Nb2O5 heterostructure are attributed due to its unique structural features, high specific surface area and the synergic effect of the n-n heterojunction. The promising results demonstrate the potential application of the α-Fe2O3(0.09)/Nb2O5 heterostructure as a good sensing material for the fabrication of ethanol sensors.
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Affiliation(s)
- Rabia Khatoon
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Sajid Rauf
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, People's Republic of China
| | - Mahmood Ul Haq
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Sanam Attique
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Salah Ud Din
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Nasir Ali
- Zhejiang Province Key Laboratory of Quantum Technology and Devices and Department of Physics, State Key Laboratory for Silicon Materials, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Yichuan Guo
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Hongwen Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Yang Tian
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Jianguo Lu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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35
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Galstyan V. “Quantum dots: Perspectives in next-generation chemical gas sensors” ‒ A review. Anal Chim Acta 2021; 1152:238192. [DOI: 10.1016/j.aca.2020.12.067] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022]
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36
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Qin Y, Wang X, Zang J. Room-temperature ethanol sensor based on ZIF-67 modified silicon nanowires with expanded detection range and enhanced moisture resistance. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138302] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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37
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Yan T, Min Y, Lin M, Chen C, Lee C, Zhao L, Ye N, Chou MMC, Liu H, Zhou W. Intersected nonpolar ZnO nanosail arrays aligned epitaxially on LiGaO
2
substrate towards enhanced photoelectrochemical responses. NANO SELECT 2021. [DOI: 10.1002/nano.202000273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Tao Yan
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Yunxiao Min
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Mei‐Yi Lin
- Department of Materials and Optoelectronic Science National Sun Yat‐sen University Kaohsiung 80424 Taiwan
| | - Chenlong Chen
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Chun‐Yu Lee
- Department of Materials and Optoelectronic Science National Sun Yat‐sen University Kaohsiung 80424 Taiwan
| | - Lili Zhao
- Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan 250022 China
| | - Ning Ye
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Mitch M. C. Chou
- Department of Materials and Optoelectronic Science National Sun Yat‐sen University Kaohsiung 80424 Taiwan
| | - Hong Liu
- Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan 250022 China
| | - Weijia Zhou
- Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan 250022 China
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Li J, Yang Y, Wang Q, Cheng X, Luo Y, An B, Bai J, Wang Y, Xie E. Design of size-controlled Au nanoparticles loaded on the surface of ZnO for ethanol detection. CrystEngComm 2021. [DOI: 10.1039/d0ce01318h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Schematic diagram of the reaction mechanism of the sensor in air and ethanol.
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Affiliation(s)
- Jianpeng Li
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yifan Yang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Qiao Wang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Xu Cheng
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yibing Luo
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Beixi An
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Jinglong Bai
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yanrong Wang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Erqing Xie
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
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39
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Fiedot-Toboła M, Suchorska-Woźniak P, Startek K, Rac-Rumijowska O, Szukiewicz R, Kwoka M, Teterycz H. Correlation between Microstructure and Chemical Composition of Zinc Oxide Gas Sensor Layers and Their Gas-Sensitive Properties in Chlorine Atmosphere. SENSORS (BASEL, SWITZERLAND) 2020; 20:E6951. [PMID: 33291379 PMCID: PMC7730158 DOI: 10.3390/s20236951] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 01/24/2023]
Abstract
In this article, we present results concerning the impact of structural and chemical properties of zinc oxide in various morphological forms and its gas-sensitive properties, tested in an atmosphere containing a very aggressive gas such as chlorine. The aim of this research was to understand the mechanism of chlorine detection using a resistive gas sensor with an active layer made of zinc oxide with a different structure and morphology. Two types of ZnO sensor layers obtained by two different technological methods were used in sensor construction. Their morphology, crystal structure, specific surface area, porosity, surface chemistry and structural defects were characterized, and then compared with gas-sensitive properties in a chlorine-containing atmosphere. To achieve this goal, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and photoluminescence spectroscopy (PL) methods were used. The sensing properties of obtained active layers were tested by the temperature stimulated conductance method (TSC). We have noticed that their response in a chlorine atmosphere is not determined by the size of the specific surface or porosity. The obtained results showed that the structural defects of ZnO crystals play the most important role in chlorine detection. We demonstrated that Cl2 adsorption is a concurrent process to oxygen adsorption. Both of them occur on the same active species (oxygen vacancies). Their concentration is higher on the side planes of the zinc oxide crystal than the others. Additionally, ZnO sublimation process plays an important role in the chlorine detection mechanism.
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Affiliation(s)
- Marta Fiedot-Toboła
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (K.S.); (R.S.)
| | - Patrycja Suchorska-Woźniak
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
| | - Kamila Startek
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (K.S.); (R.S.)
| | - Olga Rac-Rumijowska
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
| | - Rafał Szukiewicz
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland; (K.S.); (R.S.)
- Institute of Experimental Physics, University of Wroclaw, Maxa Borna 9, 50-204 Wroclaw, Poland
| | - Monika Kwoka
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland;
| | - Helena Teterycz
- Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland; (P.S.-W.); (O.R.-R.); (H.T.)
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40
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Vishnuraj R, Karuppanan KK, Aleem M, Pullithadathil B. Boosting the performance of NO 2 gas sensors based on n-n type mesoporous ZnO@In 2O 3 heterojunction nanowires: in situ conducting probe atomic force microscopic elucidation of room temperature local electron transport. NANOSCALE ADVANCES 2020; 2:4785-4797. [PMID: 36132937 PMCID: PMC9417526 DOI: 10.1039/d0na00318b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/10/2020] [Indexed: 05/04/2023]
Abstract
Herein, n-n type one dimensional ZnO@In2O3 heterojunction nanowires have been developed and their local electron transport properties during trace-level NO2 gas sensing process have been probed at room-temperature using conducting probe atomic microscopy. Solvothermally synthesized 1D ZnO@In2O3 heterojunction nanowires have been characterized by various spectroscopic and microscopic techniques, which revealed the mesoporous structure indicating their enhanced sensing properties. The dangling bonds and fraction of metal ions to oxygen ions existing on the exposed crystal facets of the heterojunction nanowires have been visualized by employing crystallographic simulations with TEM analysis, which aided in forecasting the nature of surface adsorption of NO2 gas species. In situ electrical characteristics and Scanning Spreading Resistance Microscopic (SSRM) imaging of single ZnO@In2O3 heterojunction nanowires revealed the local charge transport properties in n-n type ZnO@In2O3 heterojunction nanowires. Moreover, the ZnO@In2O3 heterojunction nanowires based sensor exhibited excellent sensitivity (S = 274%), a fast response (4-6 s) and high selectivity towards trace-level concentration (500 ppb) of NO2 gas under ambient conditions with low power consumption. Spatially resolved surface potential (SP) variations in ZnO@In2O3 heterojunction nanowires have been visualized using in situ Scanning Kelvin Probe Force Microscopy (SKPM) under NO2 gas environment at room temperature, which was further correlated with its energy band structure. The work functions of the material evaluated by SKPM reveal considerable changes in the energy band structure owing to the local electron transport between ZnO and In2O3 at the heterojunctions upon exposure to NO2 gas indicating the charge carrier recombination. A plausible mechanism has been proposed based on the experimental evidences. The results suggest that new insights into complex sensing mechanisms deduced from the present investigation on n-n type MOS based heterojunction nanowires under ambient conditions can pave the way for the novel design and development of affordable and superior real-time gas sensors.
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Affiliation(s)
| | | | - Mahaboobbatcha Aleem
- Nanosensor Laboratory, PSG Institute of Advanced Studies Coimbatore-641 004 India
| | - Biji Pullithadathil
- Nanosensor Laboratory, PSG Institute of Advanced Studies Coimbatore-641 004 India
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41
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Zhu X, Zhang J, Xie Q, Hou ZL. High-Sensitivity and Ultrafast-Response Ethanol Sensors Based on Graphene Oxide. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38708-38713. [PMID: 32805966 DOI: 10.1021/acsami.0c12196] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Ethanol sensors with ultrafast response and high sensitivity have attracted much attention to be applied to daily industrial production processes. In this work, graphene oxide-aniline (GOA) sensors are proposed to meet the requirements of detecting ethanol concentration. Graphene oxide is an outstanding material that has excellent electrical and thermal conductivity, large specific surface area, and high carrier mobility. Because of its special bonding reactions, GOA has advantages of good dispersibility, good electrical conductivity, insolubility in water, and strong plasticity. When testing ethanol concentration with sensors, there will be a lag time, which determines the sensitivity of the sensors. To the best of our knowledge, the GOA sensors in this work have the fastest response time, which is only 27 ms. The GOA ethanol sensors show a good ethanol sensing performance, including excellent sensitivity, cycle stability, and long-term stability.
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Affiliation(s)
- Xueqing Zhu
- College of Mathematics and Physics & Beijing Key Laboratory of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Junying Zhang
- College of Mathematics and Physics & Beijing Key Laboratory of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Qing Xie
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Zhi-Ling Hou
- College of Mathematics and Physics & Beijing Key Laboratory of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing 100029, China
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42
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Pan M, Tu M, Liu J. A Connection Method between Ultrahard PtW8 Wire and a Au Thick Film Based on Parallel-Gap Resistance Microwelding. MATERIALS 2020; 13:ma13132911. [PMID: 32610536 PMCID: PMC7372327 DOI: 10.3390/ma13132911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 11/16/2022]
Abstract
To meet the application requirements of a thermal gas sensor, it is necessary to realize a bond connection between PtW8 wire with a Au thick film. However, the physical properties, such as the melting point and hardness, of the two materials differ greatly. In this study, the parallel-gap resistance microwelding was introduced into the bonding connection between PtW8 wire and a Au thick film in the thermal gas sensor. The feasibility of the method was analyzed theoretically and the experimental system was established and studied. A scanning electron microscope (SEM) was used to analyze the morphology of the cross-section of the welded joint. The results showed that there was no obvious transition layer at the interface region but there were relatively dense welds. At the same time, it was found that the melted Au wetted and climbed on the surface of the platinum-tungsten alloy, which may have been the key to forming the joint. Elements were observed to have a spatial distribution gradient within the cross-section of the welding line, revealing that mutual diffusion occurred in the parallel-gap resistance microwelding, where this diffusion behavior may be the basic condition for forming the joint. Finally, the influence of the welding voltage, time, and force on the joint strength was also studied, where the joint strength could be up to 5 cN.
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Affiliation(s)
- Mingqiang Pan
- School of Mechanical and Electric Engineering, Soochow University, Suzhou 215123, China;
- Jiangsu Provincial Key Laboratory of Advanced Robotics, Soochow University, Suzhou 215123, China
- Robotics and Microsystems Center, Soochow University, Suzhou 215123, China
| | - Minghui Tu
- School of Mechanical and Electric Engineering, Soochow University, Suzhou 215123, China;
- Jiangsu Provincial Key Laboratory of Advanced Robotics, Soochow University, Suzhou 215123, China
- Robotics and Microsystems Center, Soochow University, Suzhou 215123, China
- Correspondence: (M.T.); (J.L.)
| | - Jizhu Liu
- School of Mechanical and Electric Engineering, Soochow University, Suzhou 215123, China;
- Jiangsu Provincial Key Laboratory of Advanced Robotics, Soochow University, Suzhou 215123, China
- Robotics and Microsystems Center, Soochow University, Suzhou 215123, China
- Correspondence: (M.T.); (J.L.)
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Din SU, Haq MU, Khatoon R, Chen X, Li L, Zhang M, Zhu L. A novel ethanol gas sensor based on α-Bi2Mo3O12/Co3O4 nanotube-decorated particles. RSC Adv 2020; 10:21940-21953. [PMID: 35516597 PMCID: PMC9054538 DOI: 10.1039/d0ra02591g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/23/2020] [Indexed: 11/30/2022] Open
Abstract
A novel composite based on α-Bi2Mo3O12/Co3O4 nanotube-decorated particles was successfully synthesized using a highly efficient and facile two step system using electrospinning and hydrothermal techniques. The small size Co3O4 nanoparticles were uniformly and hydrothermally developed on the electrospun α-Bi2Mo3O12 nanotubes. The pure α-Bi2Mo3O12 nanofibers and composite based on α-Bi2Mo3O12/Co3O4 were examined using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and Brunauer–Emmett–Teller (BET) analyses. From the BET measurements, the composite based on α-Bi2Mo3O12/Co3O4 exhibits a large specific surface area of 54 m2 g−1 with mesopore diameter ranges of 2–10 nm, which is mainly attributed to the remarkable and dominant enhancement in gas sensing as compared to that of the pure α-Bi2Mo3O12 nanofibers (38 m2 g−1) and Co3O4 nanoparticles (32 m2 g−1), respectively. In this work, the novel composite based on α-Bi2Mo3O12/Co3O4 presented a high sensitivity of 30.25 with a quick response/recovery speed towards 100 ppm ethanol at an optimal working temperature of 170 °C, as compared to the pure α-Bi2Mo3O12 nanofibers and Co3O4 nanoparticles, which display a sensitivity of 13.10 and 2.99 at an optimal working temperature of 220 °C and 280 °C. The sensing performance of the composite based on the α-Bi2Mo3O12/Co3O4 sensor exhibits a superior sensing performance towards ethanol, which might be owed to the enormous number of superficial oxygen species, the small size catalytic effect of the Co3O4 nanoparticles and the interfacial effect formed between the n-type α-Bi2Mo3O12 and p-type Co3O4 leading to a high charge carrier concentration. This is a novel investigation of a composite based on an α-Bi2Mo3O12/Co3O4 sensor in the gas sensing era, which might be of vital importance in applications in the advanced gas sensing field. A novel composite based on α-Bi2Mo3O12/Co3O4 nanotube-decorated particles was successfully synthesized using a highly efficient and facile two step system using electrospinning and hydrothermal techniques.![]()
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Affiliation(s)
- Salah Ud Din
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou 310027
| | - Mahmood ul Haq
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou 310027
| | - Rabia Khatoon
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou 310027
| | - Xuehua Chen
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou 310027
| | - Li Li
- Electric Power Research Institute of Guangdong Power Grid Co., Ltd
- China
| | - Manjun Zhang
- Electric Power Research Institute of Guangdong Power Grid Co., Ltd
- China
| | - Liping Zhu
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Cyrus Tang Center for Sensor Materials and Applications
- Zhejiang University
- Hangzhou 310027
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