1
|
Xia M, Hu L, Ye Y, Li Y. Tuning surface morphology of AuNPs film via thiourea as a stable SERS platform for methylene blue. Talanta 2024; 281:126848. [PMID: 39260260 DOI: 10.1016/j.talanta.2024.126848] [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: 06/03/2024] [Revised: 08/20/2024] [Accepted: 09/07/2024] [Indexed: 09/13/2024]
Abstract
Gold nanoparticles (AuNPs) have been extensively utilized in various fields such as sensors, life sciences, and catalysis. In this study, AuNPs were synthesized using a reduction method and subsequently treated with thiourea in an ethanol-water environment to prepare AuNPs film using a centrifugal deposition method for first time, resulting in the aggregation of the initial small-sized AuNPs into larger microsphere-like structures. The addition of thiourea facilitated the interconnection between AuNPs, ultimately leading to the formation of large stable gold microspheres. The sheet resistance of the AuNP films transitioned from being non-conductive to exhibiting a sheet resistance of 42.6 Ω/sq following thiourea treatment. The transformation from a flat surface to tightly connected particles resembling microspheres was observed from SEM images. The thiourea treatment not only altered the morphological characteristic of the AuNPs films but also significantly increased the number of scattering sites on their surface, leading to a substantial enhancement in the Raman scattering effect for methylene blue. This structural configuration also improved the electronic conduction and stability of the treated AuNPs films. Consequently, these findings suggest that AuNPs have promising application prospects in surface-enhanced Raman scatting (SERS), as well as in flexible electronics, catalysis, adsorption, and energy fields.
Collapse
Affiliation(s)
- Minqiang Xia
- School of Materials Science & Engineering, Shanghai University, Shanghai, 200444, China
| | - Lingui Hu
- School of Materials Science & Engineering, Shanghai University, Shanghai, 200444, China
| | - Yulu Ye
- School of Materials Science & Engineering, Shanghai University, Shanghai, 200444, China
| | - Yunbo Li
- School of Materials Science & Engineering, Shanghai University, Shanghai, 200444, China.
| |
Collapse
|
2
|
Chen H, Chen H, Chen J, Song M. Gas Sensors Based on Semiconductor Metal Oxides Fabricated by Electrospinning: A Review. SENSORS (BASEL, SWITZERLAND) 2024; 24:2962. [PMID: 38793817 PMCID: PMC11125222 DOI: 10.3390/s24102962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 04/29/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024]
Abstract
Electrospinning has revolutionized the field of semiconductor metal oxide (SMO) gas sensors, which are pivotal for gas detection. SMOs are known for their high sensitivity, rapid responsiveness, and exceptional selectivity towards various types of gases. When synthesized via electrospinning, they gain unmatched advantages. These include high porosity, large specific surface areas, adjustable morphologies and compositions, and diverse structural designs, improving gas-sensing performance. This review explores the application of variously structured and composed SMOs prepared by electrospinning in gas sensors. It highlights strategies to augment gas-sensing performance, such as noble metal modification and doping with transition metals, rare earth elements, and metal cations, all contributing to heightened sensitivity and selectivity. We also look at the fabrication of composite SMOs with polymers or carbon nanofibers, which addresses the challenge of high operating temperatures. Furthermore, this review discusses the advantages of hierarchical and core-shell structures. The use of spinel and perovskite structures is also explored for their unique chemical compositions and crystal structure. These structures are useful for high sensitivity and selectivity towards specific gases. These methodologies emphasize the critical role of innovative material integration and structural design in achieving high-performance gas sensors, pointing toward future research directions in this rapidly evolving field.
Collapse
Affiliation(s)
- Hao Chen
- School of Applied Science and Technology, Hainan University, Danzhou 571799, China; (H.C.); (H.C.); (J.C.)
| | - Huayang Chen
- School of Applied Science and Technology, Hainan University, Danzhou 571799, China; (H.C.); (H.C.); (J.C.)
| | - Jiabao Chen
- School of Applied Science and Technology, Hainan University, Danzhou 571799, China; (H.C.); (H.C.); (J.C.)
| | - Mingxin Song
- School of Electronic Science and Technology, Hainan University, Haikou 570228, China
| |
Collapse
|
3
|
Momen F, Shayeganfar F, Ramazani A. Boron-rich hybrid BCN nanoribbons for highly ambient uptake of H 2S, HF, NH 3, CO, CO 2 toxic gases. Phys Chem Chem Phys 2024; 26:5262-5288. [PMID: 38264800 DOI: 10.1039/d3cp04767a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Nanomaterials-based gas sensors are widely applied for the monitoring and fast detection of hazardous gases owing to their sensitivity and selectivity. Hydrogen sulfide (H2S), hydrogen fluoride (HF), ammonia (NH3), and carbon monoxide/dioxide (CO/CO2) produced from petroleum fields, sewage, mines, and gasoline are harmful for both human life and environment. With an increase in the emission of these toxic compounds, their real-time monitoring and efficient adsorbent application and storage are very necessary. To this end, we investigated the adsorption characteristic and sensitivity factor of these five toxic gases on armchair and zigzag hybrid boron-carbon-nitride (BCN) nanoribbons with/without boron-rich (B-rich) defects using first principle calculation, where 25%, 33%, and 50% carbon concentration were considered. Our findings reveal that B-rich nanoribbons have strong adsorption energy, charge transfer, and structural deformation owing to the double acceptor of B-rich defects. Moreover, the zigzag and armchair forms of these hybrid BCN nanoribbons show physical adsorption, altering their band gap and phase transition after adsorbing these toxic gases, where B-rich nanoribbons possess high sensitivity to NH3 and CO among other gases. Furthermore, B-rich hybrid nanoribbons have higher CO2 adsorption energy than the standard free energy of CO2 at room temperature. This study suggests that hybrid BCN nanoribbons and B-rich defected structures can be good candidates for the uptake and storage of toxic gases, helping experimental groups to design efficient ambient gas sensors.
Collapse
Affiliation(s)
- Fatemeh Momen
- Department of Physics and Energy Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - Farzaneh Shayeganfar
- Department of Physics and Energy Engineering, Amirkabir University of Technology, Tehran, Iran.
| | - Ali Ramazani
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| |
Collapse
|
4
|
Lesego M, Ndinteh DT, Ndungu P, Mamo MA. Zeolitic imidazolate framework as humidity-resistant solid state-chemiresistive gas sensors: A review. Heliyon 2023; 9:e22329. [PMID: 38034700 PMCID: PMC10687067 DOI: 10.1016/j.heliyon.2023.e22329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/16/2023] [Accepted: 11/09/2023] [Indexed: 12/02/2023] Open
Abstract
With significant technological advances, solid-state gas sensors have been extensively applied to detect toxic gases and volatile organic compounds (VOCs) in confined areas such as indoor environments and industries and to identify gas leakage. Semiconductor metal oxides are the primary sensing materials, although their major drawbacks include a lack of sensitivity, poor performance at high humidity, and operating at high temperatures ranging between 140 and 400 °C. Recently, the use of zeolitic imidazolate frameworks (ZIFs) in gas sensors has received considerable attention as a promising material to overcome the drawbacks possessed by semiconductor metal oxide-based gas sensors. Because of their unique properties, including size tunability, high surface area, and stability in humidity, ZIF becomes a preferred candidate for sensing materials. The use of ZIF materials in gas sensors is limited because of their high-temperature operation and low gas responses. This review outlines the strategies and developments in the utilization of ZIF-based materials in gas sensing. The significant influence of the addition of carbon additives in ZIF materials for temperature operation sensors is discussed. Finally, ZIF-carbon additives and SMO@ZIFs/carbon additives are the proposed materials to be studied for future prospects for the detection of VOCs at low temperatures and exhibiting good selectivity towards the gas of interest.
Collapse
Affiliation(s)
- Malepe Lesego
- Department of Chemical Sciences, University of Johannesburg, PO Box 17011, Doornfontein, 2028 Johannesburg, South Africa
| | - Derek T. Ndinteh
- Department of Chemical Sciences, University of Johannesburg, PO Box 17011, Doornfontein, 2028 Johannesburg, South Africa
| | - Patrick Ndungu
- Department of Chemistry, University of Pretoria, Private Bag X20, Hatfield, 0028, Pretoria, South Africa
| | - Messai A. Mamo
- Department of Chemical Sciences, University of Johannesburg, PO Box 17011, Doornfontein, 2028 Johannesburg, South Africa
| |
Collapse
|
5
|
Song J, Lin X, Ee LY, Li SFY, Huang M. A Review on Electrospinning as Versatile Supports for Diverse Nanofibers and Their Applications in Environmental Sensing. ADVANCED FIBER MATERIALS 2022; 5:429-460. [PMID: 36530770 PMCID: PMC9734373 DOI: 10.1007/s42765-022-00237-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/13/2022] [Indexed: 05/26/2023]
Abstract
Rapid industrialization is accompanied by the deterioration of the natural environment. The deepening crisis associated with the ecological environment has garnered widespread attention toward strengthening environmental monitoring and protection. Environmental sensors are one of the key technologies for environmental monitoring, ultimately enabling environmental protection. In recent decades, micro/nanomaterials have been widely studied and applied in environmental sensing owing to their unique dimensional properties. Electrospinning has been developed and adopted as a facile, quick, and effective technology to produce continuous micro- and nanofiber materials. The technology has advanced rapidly and become one of the hotspots in the field of nanomaterials research. Environmental sensors made from electrospun nanofibers possess many advantages, such as having a porous structure and high specific surface area, which effectively improve their performance in environmental sensing. Furthermore, by introducing functional nanomaterials (carbon nanotubes, metal oxides, conjugated polymers, etc.) into electrospun fibers, synergistic effects between different materials can be utilized to improve the catalytic activity and sensitivity of the sensors. In this review, we aimed to outline the progress of research over the past decade on electrospinning nanofibers with different morphologies and functional characteristics in environmental sensors.
Collapse
Affiliation(s)
- Jialing Song
- College of Environmental Science and Engineering, Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai, 201620 People’s Republic of China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
| | - Xuanhao Lin
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
| | - Liang Ying Ee
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
| | - Sam Fong Yau Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543 Singapore
- National University of Singapore Environmental Research Institute, T Lab Bldg, 5A Engineering Drive 1, Singapore, 117411 Singapore
| | - Manhong Huang
- College of Environmental Science and Engineering, Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai, 201620 People’s Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092 People’s Republic of China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620 People’s Republic of China
| |
Collapse
|
6
|
Chen X, Cao H, He Y, Zhou Q, Li Z, Wang W, He Y, Tao G, Hou C. Advanced functional nanofibers: strategies to improve performance and expand functions. FRONTIERS OF OPTOELECTRONICS 2022; 15:50. [PMID: 36567731 PMCID: PMC9761053 DOI: 10.1007/s12200-022-00051-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/06/2022] [Indexed: 05/07/2023]
Abstract
Nanofibers have a wide range of applications in many fields such as energy generation and storage, environmental sensing and treatment, biomedical and health, thanks to their large specific surface area, excellent flexibility, and superior mechanical properties. With the expansion of application fields and the upgrade of application requirements, there is an inevitable trend of improving the performance and functions of nanofibers. Over the past few decades, numerous studies have demonstrated how nanofibers can be adapted to more complex needs through modifications of their structures, materials, and assembly. Thus, it is necessary to systematically review the field of nanofibers in which new ideas and technologies are emerging. Here we summarize the recent advanced strategies to improve the performances and expand the functions of nanofibers. We first introduce the common methods of preparing nanofibers, then summarize the advances in the field of nanofibers, especially up-to-date strategies for further enhancing their functionalities. We classify these strategies into three categories: design of nanofiber structures, tuning of nanofiber materials, and improvement of nanofibers assemblies. Finally, the optimization methods, materials, application areas, and fabrication methods are summarized, and existing challenges and future research directions are discussed. We hope this review can provide useful guidance for subsequent related work. Graphical abstract
Collapse
Affiliation(s)
- Xinyu Chen
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Honghao Cao
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, 02139 USA
| | - Yue He
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Qili Zhou
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Zhangcheng Li
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Wen Wang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Yu He
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Guangming Tao
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China
- State Key Laboratory of Materials Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074 China
| | - Chong Hou
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074 China
- Research Institute of Huazhong University of Science and Technology in Shenzhen, Shenzhen, 518063 China
| |
Collapse
|
7
|
Malepe L, Ndinteh DT, Ndungu P, Mamo MA. Selective detection of methanol vapour from a multicomponent gas mixture using a CNPs/ZnO@ZIF-8 based room temperature solid-state sensor. RSC Adv 2022; 12:27094-27108. [PMID: 36276012 PMCID: PMC9501866 DOI: 10.1039/d2ra04665b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/12/2022] [Indexed: 10/28/2023] Open
Abstract
Methanol vapour is harmful to human health if it is inhaled, swallowed, or absorbed through the skin. Solid-state gas sensors are a promising system for the detection of volatile organic compounds, unfortunately, they can have poor gas selectivity, low sensitivity, an inferior limit of detection (LOD), sensitivity towards humidity, and a need to operate at higher temperatures. A novel solid-state gas sensor was assembled using carbon nanoparticles (CNPs), prepared from a simple pyrolysis reaction, and zinc oxide@zeolitic imidazolate framework-8 nanorods (ZnO@ZIF-8 nanorods), synthesised using a hydrothermal method. The nanomaterials were characterized using scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, X-ray photoelectron spectroscopy Raman spectroscopy, and Fourier transform infrared spectroscopy. The ZnO@ZIF-8 nanorods were inactive as a sensor, the CNPs showed some sensor activity, and the CNPs/ZnO@ZIF-8 nanorod composite performed as a viable solid-state sensor. The mass ratio of ZnO@ZIF-8 nanorods within the CNPs/ZnO@ZIF-8 nanorod composite was varied to investigate selectivity and sensitivity for the detection of ethanol, 2-propanol, acetone, ethyl acetate, chloroform, and methanol vapours. The assembled sensor composed of the CNPs/ZnO@ZIF-8 nanorod composite with a mass ratio of 1.5 : 6 showed improved gas sensing properties in the detection of methanol vapour with a LOD of 60 ppb. The sensor is insensitive to humidity and the methanol vapour sensitivity was found to be 0.51 Ω ppm-1 when detected at room temperature.
Collapse
Affiliation(s)
- Lesego Malepe
- Department of Chemical Science, University of Johannesburg PO Box 17011, Doornfontein 2028 Johannesburg South Africa
| | - Derek Tantoh Ndinteh
- Department of Chemical Science, University of Johannesburg PO Box 17011, Doornfontein 2028 Johannesburg South Africa
| | - Patrick Ndungu
- Department of Chemistry, University of Pretoria Private Bag X20, Hatfield 0028 Pretoria South Africa
| | - Messai Adenew Mamo
- Department of Chemical Science, University of Johannesburg PO Box 17011, Doornfontein 2028 Johannesburg South Africa
| |
Collapse
|
8
|
Kokulnathan T, Vishnuraj R, Chen SM, Pullithadathil B, Ahmed F, Hasan PMZ, Bilgrami AL, Kumar S. Tailored construction of one-dimensional TiO 2/Au nanofibers: Validation of an analytical assay for detection of diphenylamine in food samples. Food Chem 2022; 380:132052. [PMID: 35105505 DOI: 10.1016/j.foodchem.2022.132052] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 12/10/2021] [Accepted: 01/02/2022] [Indexed: 12/16/2022]
Abstract
We report a one-dimensional titanium dioxide encapsulated with gold heterojunction nanofibers (TiO2/Au NFs) as robust electrocatalysts for electrochemical detection of diphenylamine (DPA). A TiO2/Au NFs were successfully synthesized by a coaxial electrospinning method. The formation of TiO2/Au NFs was confirmed by various analytical and spectroscopic approaches. The fabricated TiO2/Au NFs modified screen-printed carbon electrodes (SPCE) exhibit a well-enhanced detection activity towards DPA sensing as compared to other electrodes. Under the experimental conditions, the proposed electrode leading to the sensing range from 0.05 to 60 µM with a detection limit of 0.009 µM was obtained for the DPA detection. Moreover, the TiO2/Au NFs/SPCE showed good selectivity towards the electrochemical oxidation of DPA. Interestingly, the TiO2/Au NFs modified electrode was then applied to detect the effect of DPA on spiked content in the food samples.
Collapse
Affiliation(s)
- Thangavelu Kokulnathan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan; Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei 106, Taiwan
| | | | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Biji Pullithadathil
- Nanosensor Laboratory, PSG Institute of Advanced Studies, Coimbatore 641 004, India
| | - Faheem Ahmed
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - P M Z Hasan
- Center of Nanotechnology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Anwar L Bilgrami
- Deanship of Scientific Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Shalendra Kumar
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia; Department of Physics, School of Engineering, University of Petroleum & Energy Studies, Dehradun 248007, India
| |
Collapse
|
9
|
Islam M, Dolle C, Sadaf A, Weidler PG, Sharma B, Eggeler YM, Mager D, Korvink JG. Electrospun carbon nanofibre-assisted patterning of metal oxide nanostructures. MICROSYSTEMS & NANOENGINEERING 2022; 8:71. [PMID: 35782293 PMCID: PMC9240016 DOI: 10.1038/s41378-022-00409-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 03/14/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
This work establishes carbon nanofibre-mediated patterning of metal oxide nanostructures, through the combination of electrospinning and vapor-phase transport growth. Electrospinning of a suitable precursor with subsequent carbonization results in the patterning of catalyst gold nanoparticles embedded within carbon nanofibres. During vapor-phase transport growth, these nanofibres allow preferential growth of one-dimensional metal oxide nanostructures, which grow radially outward from the nanofibril axis, yielding a hairy caterpillar-like morphology. The synthesis of metal oxide caterpillars is demonstrated using zinc oxide, indium oxide, and tin oxide. Source and substrate temperatures play the most crucial role in determining the morphology of the metal oxide caterpillars, whereas the distribution of the nanofibres also has a significant impact on the overall morphology. Introducing the current methodology with near-field electrospinning further facilitates user-defined custom patterning of metal oxide caterpillar-like structures.
Collapse
Affiliation(s)
- Monsur Islam
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Christian Dolle
- Microscopy of Nanoscale Structures & Mechanisms (MNM), Laboratory for Electron Microscopy (LEM), Karlsruhe Institute of Technology, Engesserstr. 7, D-76131 Karlsruhe, Germany
| | - Ahsana Sadaf
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Peter G. Weidler
- Institut für Funktionelle Grenzflächen, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Bharat Sharma
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Yolita M. Eggeler
- Microscopy of Nanoscale Structures & Mechanisms (MNM), Laboratory for Electron Microscopy (LEM), Karlsruhe Institute of Technology, Engesserstr. 7, D-76131 Karlsruhe, Germany
| | - Dario Mager
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jan G. Korvink
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
10
|
Chemiresistive gas sensors based on electrospun semiconductor metal oxides: A review. Talanta 2022; 246:123527. [DOI: 10.1016/j.talanta.2022.123527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/30/2022] [Accepted: 05/02/2022] [Indexed: 11/24/2022]
|
11
|
Abstract
During the last two decades, electrospinning has become a very popular technique for the fabrication of nanofibers due to its low cost and simple handling. Nanofiber materials have found utilization in many areas such as medicine, sensors, batteries, etc. In catalysis, these materials also present important advantages, since they present a low resistance to internal diffusion and a high surface area to volume ratio. These advantages are mainly due to the diameter–length proportion. A bibliographic analysis on the applications of electrospun nanofibers in catalysis shows that there are two important groups of catalysts that are being investigated, based on TiO2 and in carbon materials. The main applications found are in photo- and in electro-catalysis. The present study contributes by reviewing these catalytic applications of electrospun nanofibers and demonstrating that they are promising materials as catalysts, underlining some works to prove the advantages and possibilities that these materials have as catalysts. On one hand, the possibilities of synthesis are almost infinite, since with coaxial electrospinning quite complex nanofibers with different layers can be prepared. On the other hand, the diameter and other properties can be controlled by monitoring the applied voltage and other parameters during the synthesis, being quite reproducible procedures. The main advantages of these materials can be grouped in two: one related to their morphology, as has been commented, relative to their low resistance and internal diffusion, that is, their fluidynamic behavior in the reactor; the second group involves advantages related to the fact that the active phases can be nanoscaled and dispersed, improving the activity and selectivity in comparison with conventional catalytic materials with the same chemical composition.
Collapse
|
12
|
Zhang G, Zeng H, Liu J, Nagashima K, Takahashi T, Hosomi T, Tanaka W, Yanagida T. Nanowire-based sensor electronics for chemical and biological applications. Analyst 2021; 146:6684-6725. [PMID: 34667998 DOI: 10.1039/d1an01096d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Detection and recognition of chemical and biological species via sensor electronics are important not only for various sensing applications but also for fundamental scientific understanding. In the past two decades, sensor devices using one-dimensional (1D) nanowires have emerged as promising and powerful platforms for electrical detection of chemical species and biologically relevant molecules due to their superior sensing performance, long-term stability, and ultra-low power consumption. This paper presents a comprehensive overview of the recent progress and achievements in 1D nanowire synthesis, working principles of nanowire-based sensors, and the applications of nanowire-based sensor electronics in chemical and biological analytes detection and recognition. In addition, some critical issues that hinder the practical applications of 1D nanowire-based sensor electronics, including device reproducibility and selectivity, stability, and power consumption, will be highlighted. Finally, challenges, perspectives, and opportunities for developing advanced and innovative nanowire-based sensor electronics in chemical and biological applications are featured.
Collapse
Affiliation(s)
- Guozhu Zhang
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Hao Zeng
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Jiangyang Liu
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Wataru Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Takeshi Yanagida
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan
| |
Collapse
|
13
|
One-Dimensional Nanomaterials in Resistive Gas Sensor: From Material Design to Application. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080198] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
With a series of widespread applications, resistive gas sensors are considered to be promising candidates for gas detection, benefiting from their small size, ease-of-fabrication, low power consumption and outstanding maintenance properties. One-dimensional (1-D) nanomaterials, which have large specific surface areas, abundant exposed active sites and high length-to-diameter ratios, enable fast charge transfers and gas-sensitive reactions. They can also significantly enhance the sensitivity and response speed of resistive gas sensors. The features and sensing mechanism of current resistive gas sensors and the potential advantages of 1-D nanomaterials in resistive gas sensors are firstly reviewed. This review systematically summarizes the design and optimization strategies of 1-D nanomaterials for high-performance resistive gas sensors, including doping, heterostructures and composites. Based on the monitoring requirements of various characteristic gases, the available applications of this type of gas sensors are also classified and reviewed in the three categories of environment, safety and health. The direction and priorities for the future development of resistive gas sensors are laid out.
Collapse
|
14
|
Effects of Electrospinning Parameters on the Microstructure of PVP/TiO 2 Nanofibers. NANOMATERIALS 2021; 11:nano11061616. [PMID: 34202986 PMCID: PMC8234784 DOI: 10.3390/nano11061616] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 11/17/2022]
Abstract
Titanium dioxide has excellent chemical, electrical, and optical properties, as well as good chemical stability. For that reason, it is widely used in many fields of study and industry, such as photocatalysts, organic solar cells, sensors, dental implants, and other applications. Many nanostructures of TiO2 have been reported, and electrospinning is an efficient practical technique that has a low cost and high efficiency. In various studies on improving performance, the researchers created nanofibers with suitable microstructures by changing various properties and the many process parameters that can be controlled. In this study, PVP/TiO2 nanofibers were fabricated by the electrospinning process. The diameters of the nanofibers were controlled by various parameters. To understand the effects on the diameter of the nanofibers, various process parameters were controlled: the molecular weight and concentration of the polymers, deionized water, applied voltage, fluid velocity, and concentration of titanium precursor. The average diameter of the PVP nanofibers was controlled in a range of 42.3 nm to 633.0 nm. The average diameter of the PVP/TiO2 nanofibers was also controlled in a range of 63.5 nm to 186.0 nm after heat treatment.
Collapse
|
15
|
Korotcenkov G. Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations. NANOMATERIALS 2021; 11:nano11061555. [PMID: 34204655 PMCID: PMC8231294 DOI: 10.3390/nano11061555] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 01/09/2023]
Abstract
Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. This article discusses approaches to the manufacture of nanofiber-based gas sensors, as well as the results of analysis of the performances of these sensors. A detailed analysis of the disadvantages that can limit the use of electrospinning technology in the development of gas sensors is also presented in this article. It also proposes some approaches to solving problems that limit the use of nanofiber-based gas sensors. Finally, the summary provides an insight into the future prospects of electrospinning technology for the development of gas sensors aimed for the gas sensor market.
Collapse
Affiliation(s)
- Ghenadii Korotcenkov
- Department of Theoretical Physics, Moldova State University, 2009 Chisinau, Moldova
| |
Collapse
|
16
|
A holistic survey on mechatronic Systems in Micro/Nano scale with challenges and applications. JOURNAL OF MICRO-BIO ROBOTICS 2021. [DOI: 10.1007/s12213-021-00145-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
17
|
Wang X, Wang K, Wang H, Wang Z, Chen X, Dai W, Fu X. H 2-oxidation driven by its behavior of losing an electron over B-doped TiO 2 under UV irradiation. Phys Chem Chem Phys 2021; 23:186-195. [PMID: 33319875 DOI: 10.1039/d0cp04039h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, TiO2 was modified by doping the electron-deficient B element, and then the gas-sensing response of B-TiO2 to H2 under UV irradiation at room temperature in a N2 atmosphere and the oxidation of H2 over B-TiO2 under corresponding conditions were tested. It was found that H2 would accept an electron when adsorbed on the TiO2 surface, while H2 would donate an electron when adsorbed on the B-TiO2 surface. Correspondingly, H2 could not be oxidized over TiO2, but could be oxidized over B-TiO2. This indicated that the oxidation of H2 was dependent on the electron-transfer behavior between H2 and the surface of TiO2 or B-TiO2. Based on the relevant characterization results, it was proposed that H2 could accept an electron from TiO2 due to the higher Fermi level of TiO2, while H2 could donate an electron to B-TiO2 due to the lower Fermi level of B-TiO2 induced by doping B. This indicated that the electron-transfer behavior between H2 and TiO2 could be changed by adjusting the Fermi level of TiO2, while the electron-transfer behavior would further affect the photocatalytic activity of oxidizing H2. This result shows that the doable H2 photocatalytic oxidation in thermodynamics can be controlled by a kinetics factor (H2 losing-an-electron behavior). This work can be applied to provide an understanding of the photocatalytic oxidation behavior of other reactants over semiconductor materials.
Collapse
Affiliation(s)
- Xiaoxiao Wang
- Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China.
| | | | | | | | | | | | | |
Collapse
|
18
|
Lai C, Lin Y, Hsu H, Wang D, Wu W, Yeh P. Enhancement in the Detection Ability of Metal Oxide Sensors Using Defect-Rich Polycrystalline Nanofiber Devices. GLOBAL CHALLENGES (HOBOKEN, NJ) 2020; 4:2000041. [PMID: 33163225 PMCID: PMC7607247 DOI: 10.1002/gch2.202000041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/24/2020] [Indexed: 06/11/2023]
Abstract
The development of SnO2 and TiO2 polycrystalline nanofiber devices (PNFDs) has been widely researched as a method of protecting humans from household air pollution. PNFDs have three significant advantages. The nanofibers before the annealing process are polymer-rich materials, which can be used as particulate material (PM) filters. The multiporous nanofibers fabricated by the annealing process have numerous defects that can serve as generation-recombination centers for electron-hole pairs, enabling the PNFDs to serve as multiple-wavelength light (from 365 to 940 nm) detectors. Lastly, the numerous surface/interface defects can drastically enhance the toxic gas detection ability. The toxic gas detection range of PNFDs for CO(g) and NO(g) is from 400 to 50 ppm and 400 to 50 ppb, respectively. Quick response times and recovery properties are key parameters for commercial applications. The recovery time of NO(g) detection can be improved from 1 ks to 40 s and the PNFD operating temperature lowered to 50 °C. These results indicate that SnO2 and TiO2 PNFDs have good potential for commercialization and use as toxic gas and photon sensors in daily lives.
Collapse
Affiliation(s)
- Chun‐Yen Lai
- Department of Materials Science and EngineeringNational Chiao Tung UniversityNo. 1001, University Road, East DistrictHsinchu City30010Taiwan
| | - Yu‐Ting Lin
- Department of PhysicsTamkang UniversityNo. 151, Yingzhuan Road, Tamsui DistrictNew Taipei City25137Taiwan
| | - Hung‐Kun Hsu
- Department of PhysicsTamkang UniversityNo. 151, Yingzhuan Road, Tamsui DistrictNew Taipei City25137Taiwan
| | - Ding‐Yeong Wang
- Electronic and Optoelectronic System Research LaboratoriesIndustrial Technology Research InstituteHsinchu31040Taiwan
| | - Wen‐Wei Wu
- Department of Materials Science and EngineeringNational Chiao Tung UniversityNo. 1001, University Road, East DistrictHsinchu City30010Taiwan
- Material and Chemical Research LaboratoriesNanotechnology Research CenterIndustrial Technology Research InstituteHsinchu310Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of MattersNational Tsing Hua UniversityHsinchu City300Taiwan
| | - Ping‐Hung Yeh
- Department of PhysicsTamkang UniversityNo. 151, Yingzhuan Road, Tamsui DistrictNew Taipei City25137Taiwan
| |
Collapse
|
19
|
Munasinghe Arachchige HMM, Zappa D, Poli N, Gunawardhana N, Attanayake NH, Comini E. Seed-Assisted Growth of TiO 2 Nanowires by Thermal Oxidation for Chemical Gas Sensing. NANOMATERIALS 2020; 10:nano10050935. [PMID: 32413953 PMCID: PMC7279288 DOI: 10.3390/nano10050935] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/03/2020] [Accepted: 05/04/2020] [Indexed: 01/06/2023]
Abstract
Herein, we report the catalyst assisted growth of TiO2 one-dimensional (1D) nanowires (NWs) on alumina substrates by the thermal oxidation technique. RF magnetron sputtering was used to deposit a thin Ti metallic layer on the alumina substrate, followed by an Au catalytic layer on the Ti metallic one. Thermal oxidation was carried out in an oxygen deficient environment. The optimal thermal growth temperature was 700 °C, in a mixture environment composed by Ar and O2. As a comparison, Ti films were also oxidized without the presence of the Au catalyst. However, without the Au catalyst, no growth of nanowires was observed. Furthermore, the effect of the oxidation temperature and the film thickness were also investigated. SEM, TEM, and EDX studies demonstrated the presence of Au nanoparticles on top of the NWs, indicating that the Au catalyst drove the growth process. Raman spectroscopy revealed the Rutile crystalline phase of TiO2 NWs. Gas testing measurements were carried out in the presence of a relative humidity of 40%, showing a reversible response to ethanol and H2 at various concentrations. Thanks to the moderate temperature and the easiness of the process, the presented synthesis technique is suitable to grow TiO2 NWs for many different applications.
Collapse
Affiliation(s)
- Hashitha M. M. Munasinghe Arachchige
- SENSOR Laboratory, University of Brescia, Via D. Valotti 9, 25133 Brescia, Italy; (D.Z.); (N.P.); (E.C.)
- Centre for Research and International Relations, Sri Lanka Technological Campus, Padukka 10500, Sri Lanka;
- Correspondence:
| | - Dario Zappa
- SENSOR Laboratory, University of Brescia, Via D. Valotti 9, 25133 Brescia, Italy; (D.Z.); (N.P.); (E.C.)
| | - Nicola Poli
- SENSOR Laboratory, University of Brescia, Via D. Valotti 9, 25133 Brescia, Italy; (D.Z.); (N.P.); (E.C.)
| | - Nanda Gunawardhana
- Centre for Research and International Relations, Sri Lanka Technological Campus, Padukka 10500, Sri Lanka;
| | - Nuwan H. Attanayake
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, PA 19122, USA;
| | - Elisabetta Comini
- SENSOR Laboratory, University of Brescia, Via D. Valotti 9, 25133 Brescia, Italy; (D.Z.); (N.P.); (E.C.)
| |
Collapse
|
20
|
Kang Y, Kim K, Cho B, Kwak Y, Kim J. Highly Sensitive Detection of Benzene, Toluene, and Xylene Based on CoPP-Functionalized TiO 2 Nanoparticles with Low Power Consumption. ACS Sens 2020; 5:754-763. [PMID: 32048833 DOI: 10.1021/acssensors.9b02310] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Among various metal oxides, titanium dioxide (TiO2) has received considerable interest as a gas-sensing material owing to its high reliability at high operating temperatures. Nonetheless, TiO2 generally has low sensitivity to target gases. In particular, TiO2-based sensors have difficulty in sensitively detecting benzene, toluene, and xylene (referred to as BTX). Moreover, the reported TiO2-based sensors have not simultaneously satisfied the demand for tens of ppb BTX detection and operation with low power consumption. This work proposes a BTX sensor using cobalt porphyrin (CoPP)-functionalized TiO2 nanoparticles as a sensing material on a suspended microheater fabricated by bulk micromachining for low power consumption. TiO2 nanoparticles show an enhanced sensitivity (245%) to 10 ppm toluene with CoPP functionalization. The proposed sensor exhibits high sensitivity to BTX at concentrations ranging from 10 ppm down to several ppb. The high reliability of the sensor is also explored through the long-time operation with repeated exposure to 10 ppm toluene for 14 h.
Collapse
Affiliation(s)
- Yunsung Kang
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Kwanhun Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Byeonghwa Cho
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Yeunjun Kwak
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jongbaeg Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| |
Collapse
|
21
|
Kim J, Hong UG, Choi Y, Hong S. Enhancing the evanescent field in TiO2/Au hybrid thin films creates a highly sensitive room-temperature formaldehyde gas biosensor. Colloids Surf B Biointerfaces 2019; 182:110303. [PMID: 31299539 DOI: 10.1016/j.colsurfb.2019.06.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Jina Kim
- Department of Biotechnology, CHA University, Gyeonggi 13488, Republic of Korea
| | - Ung Gi Hong
- R&D center, SK Gas, Gyeonggi 13493, Republic of Korea
| | - Youngbo Choi
- Department of Safety Engineering, Chungbuk National University, Chungbuk, 28644, Republic of Korea.
| | - Surin Hong
- Department of Biotechnology, CHA University, Gyeonggi 13488, Republic of Korea.
| |
Collapse
|