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Zhu L, Wang Z, Wang J, Liu J, Zhao W, Zhang J, Yan W. Synergistic Effect of ZIF-8 and Pt-Functionalized NiO/In 2O 3 Hollow Nanofibers for Highly Sensitive Detection of Formaldehyde. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:841. [PMID: 38786797 PMCID: PMC11124443 DOI: 10.3390/nano14100841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/26/2024] [Accepted: 05/04/2024] [Indexed: 05/25/2024]
Abstract
A rapid and accurate monitoring of hazardous formaldehyde (HCHO) gas is extremely essential for health protection. However, the high-power consumption and humidity interference still hinder the application of HCHO gas sensors. Hence, zeolitic imidazolate framework-8 (ZIF-8)-loaded Pt-NiO/In2O3 hollow nanofibers (ZPNiIn HNFs) were designed via the electrospinning technique followed by hydrothermal treatment, aiming to enable a synergistic advantage of the surface modification and the construction of a p-n heterostructure to improve the sensing performance of the HCHO gas sensor. The ZPNiIn HNF sensor has a response value of 52.8 to 100 ppm HCHO, a nearly 4-fold enhancement over a pristine In2O3 sensor, at a moderately low temperature of 180 °C, along with rapid response/recovery speed (8/17 s) and excellent humidity tolerance. These enhanced sensing properties can be attributed to the Pt catalysts boosting the catalytic activity, the p-n heterojunctions facilitating the chemical reaction, and the appropriate ZIF-8 loading providing a hydrophobic surface. Our research presents an effective sensing material design strategy for inspiring the development of cost-effective sensors for the accurate detection of indoor HCHO hazardous gas.
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Affiliation(s)
- Lei Zhu
- Xi’an Key Laboratory of Solid Waste Resource Regeneration and Recycling, State Key Laboratory of Multiphase Flow Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (L.Z.)
- School of Physics and Electrical Engineering, Weinan Normal University, Chaoyang Street, Weinan 714099, China
| | - Ze Wang
- Xi’an Key Laboratory of Solid Waste Resource Regeneration and Recycling, State Key Laboratory of Multiphase Flow Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (L.Z.)
| | - Jianan Wang
- Xi’an Key Laboratory of Solid Waste Resource Regeneration and Recycling, State Key Laboratory of Multiphase Flow Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (L.Z.)
| | - Jianwei Liu
- Xianggui Manganese Industry Co., Ltd., Ziyang, Ankang 725300, China
- School of Chemistry and Chemical Engineering, Xi’an University of Science & Technology, Xi’an 710054, China
| | - Wei Zhao
- School of Physics and Electrical Engineering, Weinan Normal University, Chaoyang Street, Weinan 714099, China
| | - Jiaxin Zhang
- Xi’an Key Laboratory of Solid Waste Resource Regeneration and Recycling, State Key Laboratory of Multiphase Flow Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (L.Z.)
| | - Wei Yan
- Xi’an Key Laboratory of Solid Waste Resource Regeneration and Recycling, State Key Laboratory of Multiphase Flow Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (L.Z.)
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Chen Y, Han D, Wang Z, Gu F. Interface Defects and Carrier Regulation in MOF-Derived Co 3O 4/In 2O 3 Composite Materials for Enhanced Selective Detection of HCHO. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38659088 DOI: 10.1021/acsami.4c01077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Gas sensors for real-time monitoring of low HCHO concentrations have promising applications in the field of health protection and air treatment, and this work reports a novel resistive gas sensor with high sensitivity and selectivity to HCHO. The MOF-derived hollow In2O3 was mixed with ZIF-67(Co) and calcined twice to obtain a hollow Co3O4/In2O3 (hereafter collectively termed MZO-6) composite enriched with oxygen vacancies, and tests such as XPS and EPR proved that the strong interfacial electronic coupling increased the oxygen vacancies. The gas-sensitive test results show that the hollow composite MZO-6 with abundant oxygen vacancies has a higher response value (11,003) to 10 ppm of HCHO and achieves a fast response/recovery time (11/181 s) for HCHO at a lower operating temperature (140 °C). The MZO-6 material significantly enhances the selectivity to HCHO and reduces the interference of common pollutant gases such as ethanol, acetone, and xylene. There is no significant fluctuation of resistance and response values in the 30-day long-term stability test, and the material has good stability. The synergistic effect of the heterostructure and oxygen vacancies altered the formaldehyde adsorption intermediate pathway and reduced the reaction activation energy, enhancing the HCHO responsiveness and selectivity of the MZO-6 material.
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Affiliation(s)
- Yi Chen
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dongmei Han
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhihua Wang
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fubo Gu
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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3
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Liang Y, Xiang Z, Zhao X, Yan P, Xue L, Gu L, Long Y, Yu T, Yang Y. Facet-specific NiCo 2O 4/Fe 2O 3 p-n heterojunction with promising triethylamine sensing properties. J Colloid Interface Sci 2024; 653:1539-1547. [PMID: 37804621 DOI: 10.1016/j.jcis.2023.09.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/21/2023] [Accepted: 09/30/2023] [Indexed: 10/09/2023]
Abstract
Semiconductor gas sensing materials with specific crystal facets exposure have attracted researchers' attention recently. However, related research mainly focuses on single metal oxide semiconductor. The research on crystal facets designing of semiconductor p-n heterojunction is still highly challenging. Herein, based on NiCo2O4 octahedral nanocrystals with high-energy {111} crystal facets as substrate, Fe2O3 nanorods with {001} crystal facets were decorated to obtain a facet-specific NiCo2O4/Fe2O3 p-n heterojunction. The p-n heterojunction showed promising triethylamine sensing properties with a high response of 70 (Ra/Rg, 100 ppm) at 300 °C, which was about 57 and 10 times higher than that of pristine NiCo2O4 and Fe2O3, respectively. Theoretical calculation suggested that the electronic coupling effect formed by d-orbitals of Co-Fe in heterojunction strengthened the influence on the orbitals of N site in triethylamine, which improved the triethylamine adsorption and interface charge transfer. The results indicate that crystal facets designing of NiCo2O4 and Fe2O3 can achieve synergistic optimization of surface/interface characteristics of p-n heterojunction, thereby achieving a comprehensive improvement in gas sensing performance. This study not only provides a high performance triethylamine sensing material, but also greatly enriches the gas sensing mechanism of p-n heterojunction at the atomic and electronic levels.
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Affiliation(s)
- Yan Liang
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Zhongke Xiang
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Xiaojian Zhao
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Peipei Yan
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Li Xue
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Lisheng Gu
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Yongdong Long
- Department of Artificial Intelligence, Nanchang Key Laboratory of New Electronic Components and Sensing Technology, Jiangxi University of Technology, Nanchang 330098, Jiangxi, PR China
| | - Ting Yu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China
| | - Yong Yang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330022, Jiangxi, PR China.
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4
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Zhang R, Liu L, Yang W, Liu Y, Liu Y. Enhanced sensitivity of Au@Bi 2WO 6 flower-like materials to formaldehyde. DISCOVER NANO 2023; 18:141. [PMID: 37955789 PMCID: PMC10643700 DOI: 10.1186/s11671-023-03923-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/09/2023] [Indexed: 11/14/2023]
Abstract
Bi2WO6 flower-like materials (FMs) were prepared by a hydrothermal method, followed by an in-situ reduction method to prepare Au@Bi2WO6 FMs. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy were employed to characterize the samples. It was discovered that the calculated OV content of Au@Bi2WO6 FMs is 25.16% whereas that of Bi2WO6 FMs is 20.81%, offering appropriate active sites for the absorption of gases and thus enhancing outstanding sensing property. Moreover, the detection of volatile and hazardous substances such as formaldehyde, methanol, acetone, benzene, toluene, and xylene was carried out to assess the efficacy of the Au@Bi2WO6 FMs sensors. The optimal operating temperatures for the Bi2WO6 FMs and Au@Bi2WO6 FMs sensors were 290 and 260 °C, respectively. Compared with Au@Bi2WO6 FMs sensor and Bi2WO6 FMs one, the best response of the front was 250 (900)-100 (800) ppm formaldehyde whereas that of the latter was 90 (230). Therefore, Au@ Bi2WO6 FMs have good response and selectivity, which are promising candidates for formaldehyde detection.
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Affiliation(s)
- Ruifeng Zhang
- Yunnan Key Laboratory of Optoelectronic Information Technology, Kunming, 650500, People's Republic of China
- Institute of Physics and Electronic Information, Yunnan Normal University, Kunming, 650500, People's Republic of China
| | - Lei Liu
- Yunnan Key Laboratory of Optoelectronic Information Technology, Kunming, 650500, People's Republic of China
- Institute of Physics and Electronic Information, Yunnan Normal University, Kunming, 650500, People's Republic of China
| | - Weiye Yang
- Yunnan Key Laboratory of Optoelectronic Information Technology, Kunming, 650500, People's Republic of China
- Institute of Physics and Electronic Information, Yunnan Normal University, Kunming, 650500, People's Republic of China
| | - Yao Liu
- Yunnan Key Laboratory of Optoelectronic Information Technology, Kunming, 650500, People's Republic of China
- Institute of Physics and Electronic Information, Yunnan Normal University, Kunming, 650500, People's Republic of China
| | - Yingkai Liu
- Yunnan Key Laboratory of Optoelectronic Information Technology, Kunming, 650500, People's Republic of China.
- Institute of Physics and Electronic Information, Yunnan Normal University, Kunming, 650500, People's Republic of China.
- Key Laboratory of Advanced Technique and Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming, 650500, China.
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Zhang H, Zhao W, Meng F. Low Detection Limit and High Sensitivity 2-Butanone Gas Sensor Based on ZnO Nanosheets Decorated by Co Nanoparticles Derived from ZIF-67. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2398. [PMID: 37686906 PMCID: PMC10489766 DOI: 10.3390/nano13172398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/19/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
2-butanone has been certified to cause potential harm to the human body, environment, etc. Therefore, achieving a method for the high sensitivity and low limit detection of 2-butanone is of great significance. To achieve this goal, this article uses ZIF-67 prepared by a precipitation method as a cobalt source, and then prepares cobalt-modified zinc oxide nanosheets through a hydrothermal method. The microstructure of the materials was observed by SEM, EDS, TEM, HRTEM, XPS and XRD. The test data display that the sensor ZC2 can produce a high response (2540) to 100 ppm 2-butanone at 270 °C, which is 21 times higher than that of pure ZnO materials. Its detection limit is also optimized to 24 ppb. The sensor (ZC2) also excels in these properties: selectivity, repeatability and stability over 30 days. Further analysis indicates that the synergistic and catalytic effects of p-n heterojunction are the key sources for optimizing the performance of sensors for detecting 2-butanone.
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Affiliation(s)
- Hua Zhang
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China;
| | | | - Fanli Meng
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China;
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6
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Dai Y, Feng Z, Zhong K, Tian J, Wu G, Liu Q, Wang Z, Hua Y, Liu J, Xu H, Zhu X. Highly Efficient and Exceptionally Durable Photooxidation Properties on Co 3O 4/g-C 3N 4 Surfaces. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103879. [PMID: 37241505 DOI: 10.3390/ma16103879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/22/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023]
Abstract
Water pollution is a significant social issue that endangers human health. The technology for the photocatalytic degradation of organic pollutants in water can directly utilize solar energy and has a promising future. A novel Co3O4/g-C3N4 type-II heterojunction material was prepared by hydrothermal and calcination strategies and used for the economical photocatalytic degradation of rhodamine B (RhB) in water. Benefitting the development of type-II heterojunction structure, the separation and transfer of photogenerated electrons and holes in 5% Co3O4/g-C3N4 photocatalyst was accelerated, leading to a degradation rate 5.8 times higher than that of pure g-C3N4. The radical capturing experiments and ESR spectra indicated that the main active species are •O2- and h+. This work will provide possible routes for exploring catalysts with potential for photocatalytic applications.
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Affiliation(s)
- Yelin Dai
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Ziyi Feng
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Kang Zhong
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Jianfeng Tian
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Guanyu Wu
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Qing Liu
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Zhaolong Wang
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Yingjie Hua
- The Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province, School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Jinyuan Liu
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Hui Xu
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Xingwang Zhu
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
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7
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Tang Y, Gong J, Gou Y, Wang H, Yu L. The CeO2–TiO2 composite material for improving response speed of detecting low-concentration formaldehyde. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02607-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Cao J, Zhang N, Yang S, Xu W, Zhang X, Zhang H, Wang S. Study on the selectivity difference of formaldehyde and ethanol induced by variation of energy gap in In2O3 hierarchical materials. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Design and optimization strategies of metal oxide semiconductor nanostructures for advanced formaldehyde sensors. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214280] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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10
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Li XY, Sun GT, Fan F, Li YY, Liu QC, Yao HC, Li ZJ. Au 25 Nanoclusters Incorporating Three-Dimensionally Ordered Macroporous In 2O 3 for Highly Sensitive and Selective Formaldehyde Sensing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:564-573. [PMID: 34962768 DOI: 10.1021/acsami.1c16552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Detection of formaldehyde (FA) in the atmosphere is of significant importance because exposure to FA may cause serious health problems such as sick-house syndrome, leukemia, and cancer. Modifying metal oxide semiconductors (MOSs) with noble metal nanoparticles (NPs) is an efficient method to enhance FA-sensing properties. Herein, a series of Au25 nanocluster (NC)-decorated three-dimensionally ordered macroporous In2O3 materials (Au25/3DOM In2O3) is created, and the loading amount of Au25 NCs was optimized based on FA responses. To reveal the effect of gold size on FA responses, we constructed Au144 NC-loaded 3DOM In2O3 and Au NP (2.9 nm)-modified 3DOM In2O3 and compared their gas-sensing properties with the optimal Au25/3DOM In2O3. The results show that in comparison with its counterparts, the optimal Au25/3DOM In2O3 presents higher sensitivity, shorter response/recovery times, better selectivity, and excellent reproducibility. More attractively, the responses to FA are dependent on the size of Au particles loaded on In2O3. We suggest that the enhanced FA responses for the optimal material are mainly attributed to the electronic and chemical-sensitization effects of Au25 NCs, and the size-dependent effect of FA responses is ascribed to the size of Au NPs affecting the formation of oxygen-adsorbing species. This work provides an efficient way for fabricating noble metal NP-loaded MOSs with tunable gas-sensing properties.
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Affiliation(s)
- Xue-Ying Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Guang-Ting Sun
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Fan Fan
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
- Guangdong Fangyuan Environment Co., Ltd., Jiangmen, Guangdong 529145, China
| | - Yan-Yang Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Qing-Chao Liu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Hong-Chang Yao
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Zhong-Jun Li
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China
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Liang X, Zhang J, Zhang K, Yang X, Zhang M. The modification effect of Fe2O3 nanoparticles on ZnO nanorods improves the adsorption and detection capabilities of TEA. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01339d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The depletion layer and more active sites are the key factors for improving the gas sensitivity of an Fe2O3/ZnO sensor.
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Affiliation(s)
- Xiao Liang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Jing Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Kewei Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Xiaodong Yang
- School of Mechanical Engineering, Jilin Engineering Normal University, Changchun 130052, People's Republic of China
| | - Mingzhe Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
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Mo R, Han D, Ren Z, Yang D, Wang F, Li C. Hollow Fe2O3/Co3O4 microcubes derived from metal-organic framework for enhanced sensing performance towards acetone. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.06.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Umar A, Ibrahim AA, Kumar R, Algadi H, Albargi H, Alsairi MA, Alhmami MAM, Zeng W, Ahmed F, Akbar S. CdO-ZnO nanorices for enhanced and selective formaldehyde gas sensing applications. ENVIRONMENTAL RESEARCH 2021; 200:111377. [PMID: 34058181 DOI: 10.1016/j.envres.2021.111377] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
This paper reports synthesis, properties and gas sensing applications of ZnO nanoflowers and CdO-ZnO nanorices prepared by hydrothermal process. The morphological characterizations confirmed the formation of well-defined nanoflowers and nanorices structures for ZnO and CdO-ZnO nanomaterials, respectively. The structural properties revealed the wurtzite hexagonal phase of the synthesized materials. The sensor devices based on ZnO nanoflowers and CdO-ZnO nanorices were fabricated and tested towards various gases including ethanol, methanol, ammonia, carbon monoxide, methane and formaldehyde. The fabricated gas sensor based on CdO-ZnO nanorices exhibited a high response (34.5) towards 300 ppm formaldehyde gas at 350 °C compared to ZnO nanoflowers (14.5) under the same experimental conditions. The response and recovery times for ZnO nanoflowers-based sensor were~9.8 s and ~6 s while for CdO-ZnO based sensor, these were ~10s and ~6s, respectively. A rapid response (34.5) for CdO-ZnO nanorices based formaldehyde gas sensor was observed as compared to other gases such as ammonia (12.3), methanol (16.5), ethanol (20), carbon monoxide (16.3) and methane (12.4), which confirm the high-selectivity towards formaldehyde gas. Finally, a plausible formaldehyde gas sensing mechanism is proposed.
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Affiliation(s)
- Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran, 11001, Saudi Arabia; Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia.
| | - Ahmed A Ibrahim
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran, 11001, Saudi Arabia; Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia
| | - Rajesh Kumar
- Department of Chemistry, Jagdish Chandra DAV College, Dasuya, Punjab, 144205, India
| | - Hassan Algadi
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Department of Electrical Engineering, College of Engineering, Najran University, Najran, 11001, Saudi Arabia
| | - Hasan Albargi
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Department of Physics, Faculty of Science and Arts, Najran University, Najran, 11001, Saudi Arabia
| | - Mabkhoot A Alsairi
- Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Empty Quarter Research Unit, Department of Chemistry, College of Science and Arts, Sharurah Branch, Najran University, Sharurah, Saudi Arabia
| | - Mohsen A M Alhmami
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran, 11001, Saudi Arabia
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing, China
| | - Faheem Ahmed
- Department of Physics, College of Science, King Faisal University, P. O. Box-400, Hofuf, Al-Ahsa, 31982, Saudi Arabia
| | - Sheikh Akbar
- Center for Industrial Sensors and Measurements (CISM), Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA
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14
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Tang Y, Zhang M, Nawaz SA, Tian X, Wang H, Wang J. TiO 2hierarchical nano blooming-flower decorated by Pt for formaldehyde detection. NANOTECHNOLOGY 2021; 32:365601. [PMID: 34038880 DOI: 10.1088/1361-6528/ac056c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
To achieve an ultra-low concentration formaldehyde detection at low temperature, a platinum (Pt) assisted TiO2hierarchical nano blooming-flower sphere material is synthesized through hydrothermal method. SEM and transmission electron microscope characterizations show that the diameter of the nano sphere was around 2μm with dissilient rods of 60 nm in diameter and 1μm in length on the surface. The response (Ra/Rg) achieved form this nanomaterial to HCHO is 1.08 (100 ppb) and 5.82 (5 ppm) at 130 °C without an involvement of any light source or solution. The relationship curve between the responses and concentrations shows regular exponential trend. The verification of sensor stability done by a 3 month reliability test shows no response-degradation. The optimal response and stability is attributed to the massive dissilient rods on the surface of TiO2spheres and the assistance of Pt as a catalyzer disperses to intensify the formation of depletion area on the surface of TiO2. This study provide an attractive and cost effective solution for the detection of HCHO in air at a relatively low temperature.
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Affiliation(s)
- Yankun Tang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Ming Zhang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Sher Ali Nawaz
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Xianqing Tian
- China Academy of Engineering Physics, Institute of Chemical Materials, 64 Mianshan Road, Mianyang, Sichuan, 621900, People's Republic of China
| | - Hairong Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Jiuhong Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
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15
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Yang L, Hong Y, Liu E, Zhang X, Wang L, Lin X, Shi J. Significant enhancement of photocatalytic H2 production simultaneous with dye degradation over Ni2P modified In2O3 nanocomposites. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118366] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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16
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Akhtar A, Chu X, Liang S, Dong Y, He L, Zhang K. Enhanced formaldehyde sensing properties of MoS2-Zn2SnO4 nanocomposites synthesized via hydrothermal method. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Du L, Wang D, Gu K, Zhang M. Construction of PdO-decorated double-shell ZnSnO 3 hollow microspheres for n-propanol detection at low temperature. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01292k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The sensor based on 4 wt% PdO-loaded double-shell ZnSnO3 hollow microspheres shows rapid response/recovery speed to n-propanol at low working temperature.
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Affiliation(s)
- Liyong Du
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Dongxue Wang
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Kuikun Gu
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Mingzhe Zhang
- State key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- People's Republic of China
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