Relevant bibliographies by topics / Nanomaterials - Gas Sensing

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Nanomaterials - Gas Sensing'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

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Journal articles on the topic "Nanomaterials - Gas Sensing"

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Yadav, Anshul, and Niraj Sinha. "Nanomaterial-based gas sensors: A review on experimental and theoretical studies." Materials Express 12, no. 1 (January 1, 2022): 1–33. http://dx.doi.org/10.1166/mex.2022.2121.

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Gas sensors play an essential role in various fields such as public safety, environmental monitoring, medical engineering, food monitoring, pharmaceutical industries and clinical diagnostic, to name a few. The need for miniaturized sensors possessing high sensitivity, time response, selectivity, reproducibility, durability, and low cost has driven the discovery of nanomaterials-based gas sensing devices due to their inherent properties such as chemical/physical gas adsorption capabilities and high surface-to-volume ratio. Studies in the literature highlight the development of gas sensors using novel nanomaterials to detect toxic gases. The gas molecules are sensed by the nanomaterial due to adsorption of the gas on the sensor surface, which leads to conductivity change in the nanomaterial. However, the sensing mechanism is quite complicated. Computational studies help the researchers elucidate the physical understanding behind such a complicated mechanism and aid in developing tailored nanomaterials for gas sensing applications. This review outlines different sensor types and the advantages and disadvantages of each sensor for various applications. Different nanostructure-based gas sensors and recent studies are discussed elaborately. The contributions made by theoretical and experimental studies in studying the gas sensing applications of nanomaterials are also discussed.
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Zhong, Zhi-Cheng, Zhao-Jun Jing, Kui-Yuan Liu, and Tong Liu. "Acetylene Sensing by ZnO/TiO2 Nanoparticles." Journal of Nanoelectronics and Optoelectronics 15, no. 1 (January 1, 2020): 41–45. http://dx.doi.org/10.1166/jno.2020.2726.

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We adopted the sol–gel and hydrothermal methods to prepare the TiO2 nanomaterials doped with ZnO. We adopted X-ray diffraction, scanning electron microscopy, and the Brunauer–Emmett–Teller method to investigate the materials’ structures and morphologies. The results showed that the prepared TiO2 nanomaterials had uniform size and good dispersibility. Gas sensors were fabricated and their performances in acetylene sensing were assessed. The results show that the sensor prepared with the ZnO/TiO2 nanomaterial doped with 10 wt% ZnO gave fast response and recovery times for acetylene gas at different concentrations. When the operating temperature was 280 °C, the gas sensor detected 200 ppm acetylene gas with a response sensitivity of 9.9, a response time of 5 s, and a recovery time of 2 s.
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Bogue, Robert. "Nanomaterials for gas sensing: a review of recent research." Sensor Review 34, no. 1 (January 14, 2014): 1–8. http://dx.doi.org/10.1108/sr-03-2013-637.

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Purpose – This paper aims to provide a detailed review of gas sensor research which exploits the properties of nanomaterials and nanostructures. Design/methodology/approach – Following an introduction, this paper discusses developments in gas sensors based on carbon nanotubes, titanium dioxide nanotubes, graphene, nanocrystalline diamond and a range of metal oxide nanomaterials. It concludes with a discussion of this research and its commercial potential and a list of references to the research considered in the main text. Findings – Gas sensors based on a multitude of nanomaterials are the subject of a global research effort which has generated an extensive literature. Prototype devices have been developed which respond to numerous important gases at concentrations which correspond well with industrial requirements. Other critical performance characteristics have been studied extensively and the results suggest commercial prospects for these technologies. Originality/value – This paper provides details of the highly topical field of nanomaterial-based gas sensor research.
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Zeng, Yamei, Shiwei Lin, Ding Gu, and Xiaogan Li. "Two-Dimensional Nanomaterials for Gas Sensing Applications: The Role of Theoretical Calculations." Nanomaterials 8, no. 10 (October 19, 2018): 851. http://dx.doi.org/10.3390/nano8100851.

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Two-dimensional (2D) nanomaterials have attracted a large amount of attention regarding gas sensing applications, because of their high surface-to-volume ratio and unique chemical or physical gas adsorption capabilities. As an important research method, theoretical calculations have been massively applied in predicting the potentially excellent gas sensing properties of these 2D nanomaterials. In this review, we discuss the contributions of theoretical calculations in the study of the gas sensing properties of 2D nanomaterials. Firstly, we elaborate on the gas sensing mechanisms of 2D layered nanomaterials, such as the traditional charge transfer mechanism, and a standard for distinguishing between physical and chemical adsorption, from the perspective of theoretical calculations. Then, we describe how to conduct a theoretical analysis to explain or predict the gas sensing properties of 2D nanomaterials. Thirdly, we discuss three important methods that have been applied in order to improve the gas sensing properties, that is, defect functionalization (vacancy, edge, grain boundary, and doping), heterojunctions, and electric fields. Among these strategies, theoretical calculations play a very important role in explaining the mechanisms underlying the enhanced gas sensing properties. Finally, we summarize both the advantages and limitations of the theoretical calculations, and present perspectives for further research on the 2D nanomaterials-based gas sensors.
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Lun, Danyang, and Ke Xu. "Recent Progress in Gas Sensor Based on Nanomaterials." Micromachines 13, no. 6 (June 10, 2022): 919. http://dx.doi.org/10.3390/mi13060919.

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Nanomaterials-based gas sensors have great potential for substance detection. This paper first outlines the research of gas sensors composed of various dimensional nanomaterials. Secondly, nanomaterials may become the development direction of a new generation of gas sensors due to their high sensing efficiency, good detection capability and high sensitivity. Through their excellent characteristics, gas sensors also show high responsiveness and sensing ability, which also plays an increasingly important role in the field of electronic skin. We also reviewed the physical sensors formed from nanomaterials in terms of the methods used, the characteristics of each type of sensor, and the advantages and contributions of each study. According to the different kinds of signals they sense, we especially reviewed research on gas sensors composed of different nanomaterials. We also reviewed the different mechanisms, research processes, and advantages of the different ways of constituting gas sensors after sensing signals. According to the techniques used in each study, we reviewed the differences and advantages between traditional and modern methods in detail. We compared and analyzed the main characteristics of gas sensors with various dimensions of nanomaterials. Finally, we summarized and proposed the development direction of gas sensors based on various dimensions of nanomaterials.
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Galstyan, Vardan, Nicola Poli, and Elisabetta Comini. "Highly Sensitive and Selective H2S Chemical Sensor Based on ZnO Nanomaterial." Applied Sciences 9, no. 6 (March 19, 2019): 1167. http://dx.doi.org/10.3390/app9061167.

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ZnO is worth evaluating for chemical sensing due to its outstanding physical and chemical properties. We report the fabrication and study of the gas sensing properties of ZnO nanomaterial for the detection of hydrogen sulfide (H2S). This prepared material exhibited a 7400 gas sensing response when exposed to 30 ppm of H2S in air. In addition, the structure showed a high selectivity towards H2S against other reducing gases. The high sensing performance of the structure was attributed to its nanoscale size, morphology and the disparity in the sensing mechanism between the H2S and other reducing gases. We suggest that the work reported here including the simplicity of device fabrication is a significant step toward the application of ZnO nanomaterials in chemical gas sensing systems for the real-time detection of H2S.
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Malik, Ritu, Vijay K. Tomer, Yogendra Kumar Mishra, and Liwei Lin. "Functional gas sensing nanomaterials: A panoramic view." Applied Physics Reviews 7, no. 2 (June 2020): 021301. http://dx.doi.org/10.1063/1.5123479.

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Wang, Xiao-Feng, Xue-Zhi Song, Kai-Ming Sun, Li Cheng, and Wei Ma. "MOFs-derived porous nanomaterials for gas sensing." Polyhedron 152 (September 2018): 155–63. http://dx.doi.org/10.1016/j.poly.2018.06.037.

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Debéda, Hélène, Van Son Nguyen, Pierrick Clément, Véronique Jubera, and Eduard Llobet. "Printed transducers using nanomaterials for gas sensing." Materials Today: Proceedings 6 (2019): 306–9. http://dx.doi.org/10.1016/j.matpr.2018.10.421.

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Lyson-Sypien, B., A. Czapla, M. Lubecka, E. Kusior, K. Zakrzewska, M. Radecka, A. Kusior, A. G. Balogh, S. Lauterbach, and H. J. Kleebe. "Gas sensing properties of TiO2–SnO2 nanomaterials." Sensors and Actuators B: Chemical 187 (October 2013): 445–54. http://dx.doi.org/10.1016/j.snb.2013.01.047.

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Dissertations / Theses on the topic "Nanomaterials - Gas Sensing"

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Piloto, Carlo. "Carbon nanomaterials for room temperature gas sensing." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/97743/1/Carlo_Piloto_Thesis_Redacted.pdf.

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The aim of this research is to develop high performance gas sensors with low power consumption and high portability. This was achieved by synthesizing carbon nanomaterials decorated with alkali-metal dopants and metal oxides, and by optimizing ultrathin layer of carbon nanobutes coupled to a new deposition technique. These materials demonstrated excellent sensitivity at room temperature to both nitrogen dioxide and ammonia, down to ppm level, providing a new pathway to realise room temperature gas sensors. Our fabrication methods are highly scalable and do not involve the use of expensive equipment which makes them excellent candidates for mass production.
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Tanvir, Nauman Bin [Verfasser], and Gerald A. [Akademischer Betreuer] Urban. "Investigation of metal oxide nanomaterials for CO2 gas sensing applications." Freiburg : Universität, 2017. http://d-nb.info/1138195316/34.

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Adnan, Rohul. "Gold-based Nanomaterials: Spectroscopy, Microscopy and Applications in Catalysis and Sensing." Thesis, University of Canterbury. Chemistry, 2015. http://hdl.handle.net/10092/10507.

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The birth of nanotechnology era has revolutionized materials science, catalysis and field of optoelectronics. Novel and unique phenomena emerge when material dimensions are reduced to ultra-small size regime and enter nanometre (2-100 nm) realm. Such novel materials are expected to replace bulk materials, offering lower cost of manufacturing and enabling progress in many areas such as solar cell, drug delivery, quantum communication and computing, catalysis and sensing applications. With the progress in nanomaterial synthesis and fabrication, the need for the state-of-art characterization techniques became obvious; such techniques help to establish a complete understanding of the nature and interactions of nanosized materials. In this thesis, the first part focuses on the synthesis of gold and ruthenium clusters, namely Au8, Au9, Au101, Ru3, Ru4 and AuRu3, using the well-established synthetic protocols in the literature. Apart from the standard lab-based characterization techniques such as nuclear magnetic resonance (NMR), UV-visible spectroscopy (UV-vis) and Fourier Transform Infra-red (FTIR), a less explored but useful technique far infra-red (far IR) spectroscopy, available at the Australian Synchrotron (AS), was employed to investigate the vibrational modes in these clusters. Peaks in the experimental far IR spectra were assigned unambiguously to specific vibrations by comparing with the ones generated via DFT calculations with the help of collaborators, group of Professor Gregory Metha, University of Adelaide. For the Au9 cluster, three significant gold core vibrations are observed at 157, 177 and 197 cm-1 in the experimental spectrum. In the case of the Ru3 cluster, only a single ruthenium core vibration is identified within the spectrum, at 150 cm-1 with the calculated force constant, k = 0.33 mdyne/Å. The Ru4 cluster exhibits two metal core vibrations at 153 and 170 cm-1 with force constants of 0.35 and 0.53 mdyne/Å, respectively. Substitution with a gold atom yielding a mixed metal AuRu3 cluster shifts the core transitions toward higher wavenumbers at 177 and 299 cm-1 with an increase in force constants to 0.37 and 1.65 mdyne/Å, respectively. This is attributed to the change in chemical composition and geometry of the metal cluster core. A combination of the DFT calculations and high quality synchrotron-based experimental measurements allowed the full assignment of the key transitions in these clusters. Next, these clusters were fabricated into heterogeneous catalysts by depositing on different metal oxide nanopowders. Synchrotron X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) studies were performed at the Australian Synchrotron and the Photon Factory synchrotron in Japan to investigate the electronic structure of Au8, Au9 and Au101 on TiO2 catalysts. The XPS analysis reveals that “as-deposited” Au8 and Au9 retain some un-aggregated clusters while Au101 show bulk-like gold. These findings are in line with TEM observations, where the aggregates (large particles, > 2 nm) of Au8, Au9 and Au101 are hardly seen under HRTEM. UV-visible diffuse reflectance spectroscopy (UV-vis DRS) studies show the absence of localised surface plasmon resonance (LSPR) peaks in these “as-deposited” clusters, suggesting they are below 2 nm in size. Importantly, the XAS spectrum of “as-deposited” Au9 clusters estimates that 60% of pure, un-aggregated Au9 clusters and 40% of bulk gold in the sample. Upon calcination under O2 and combined O2 and H2 (O2-H2), Au8, Au9 and Au101 clusters form larger nanoparticles (> 2 nm) with the appearance of LSPE peak in UV-vis DR spectra. In addition, majority of the phosphine ligands (that stabilise the gold core) dislodge and form phosphine oxide-like species by interacting with oxygen on the TiO2 surface. The third part focused on testing the catalytic performance of the supported Au8, Au9, Au101, Ru3, Ru4 and AuRu3 clusters on different TiO2, SiO2, ZnO and ZrO2 in benzyl alcohol oxidation. Au101-based catalysts display the highest catalytic activity with a turn-over frequency (TOF) up to 0.69 s-1. The high catalytic activity is attributed to the formation of large Au nanoparticles (> 2 nm) that coincides with the partial removal of capping ligands. Au8 and Au9 clusters which contain NO3- counter anions are found to be inactive in benzyl alcohol oxidation. Further work shows that the presence of NO3- species diminishes the catalytic activity. Monometallic ruthenium clusters, Ru3 and Ru4, are found to be inactive yet the bimetallic AuRu3 clusters are active in benzyl alcohol oxidation, suggesting the synergistic effect between ruthenium and gold metal. Investigation of catalytic testing parameters reveals that tuning selectivity of the product is possible through manipulating the reaction temperature. Finally, a joint experiment with Prof. Wojtek Wlodarski’s group at RMIT, Melbourne was undertaken to test the sensing ability of Au9 clusters for hydrogen detection. Au9 clusters were deposited onto radio-frequency (RF) sputtered WO3 films at two different concentrations; 0.01(S1) and 0.1(S2) mg/mL. It was found that the optimal temperatures for sensor S1 and S2 were 300 °C and 350 °C, respectively. The sensor with lower Au9 concentration (S1) displays a faster response and recovery time, and a higher sensitivity toward H2. HRTEM studies reveal that the sensor S1 contain a significant population of sub-5 nm Au nanoparticles which might be responsible for a faster rate of H2 adsorption and dissociation. The key finding in this study suggest that the addition of catalytic layer such as ultra-small Au9 clusters results in improved sensitivity and dynamic performance (response and recovery time) of H2 sensors. In summary, this thesis demonstrated that cluster-based nanomaterials have wide range of applications spanning from catalysis to sensing. Further improvements in material synthesis and use of multiple complimentary characterization techniques allowed better understanding of the nature of the key active species (metal nanoparticles) assisting design of catalysts and sensors with enhanced performance.
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Navarrete, Gatell Eric. "Synthesis and gas sensing properties of inorganic semiconducting, p-n heterojunction nanomaterials." Doctoral thesis, Universitat Rovira i Virgili, 2021. http://hdl.handle.net/10803/672438.

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En aquesta tesis utilitzant principalment Aerosol Assited Chemical Vapor Deposition, AACVD, com a metodologia de síntesis d'òxid de tungstè nanoestructurat s'han fabricat diferents sensors de gasos. Per tal d'estudiar la millora en la selectivitat i la sensibilitat dels sensors de gasos basats en òxid de tungstè aquest s'han decorat, via AACVD, amb nanopartícules d'altres òxids metàl·lics per a crear heterojuncions per tal d'obtenir un increment en la sensibilitat electrònica, les propietats químiques del material o bé ambdues. En particular, s'han treballat en diferents sensors de nanofils d'òxid de tungstè decorats amb nanopartícules d'òxid de níquel, òxid de cobalt i òxid d'iridi resultant en sensors amb un gran increment de resposta i selectivitat cap al sulfur d'hidrogen, per a l'amoníac i per a l'òxid de nitrogen respectivament a concentracions traça. A més a més, s'han estudiat els mecanismes de reacció que tenen lloc entre les espècies d'oxigen adsorbides a la superfície del sensor quan interactua amb un gas. I també s'ha treballat en intentar controlar el potencial de superfície de les capes nanoestructurades per tal de controlar la deriva en la senyal al llarg del temps, quan el sensor està operant, a través d'un control de temperatura.
En esta tesis utilizando principalmente Aerosol Assited Chemical Vapor Deposition, AACVD, como metodología de síntesis de óxido de tungsteno nanoestructurado se han fabricado diferentes sensores de gases. Para estudiar la mejora en la selectividad y la sensibilidad de los sensores de gases basados en óxido de tungsteno estos se han decorado, vía AACVD, con nanopartículas de otros óxidos metálicos para crear heterouniones para obtener un incremento en la sensibilidad electrónica, las propiedades químicas del material o bien ambas. En particular, se han trabajado en diferentes sensores de nanohilos de óxido de tungsteno decorados con nanopartículas de óxido de níquel, óxido de cobalto y óxido de iridio resultante en sensores con un gran incremento de respuesta y selectividad hacia el sulfuro de hidrógeno, para el amoníaco y para el óxido de nitrógeno respectivamente a concentraciones traza. Además, se han estudiado los mecanismos de reacción que tienen lugar entre las especies de oxígeno adsorbidas en la superficie del sensor cuando interactúa con un gas. Y también se ha trabajado en intentar controlar el potencial de superficie de las capas nanoestructuradas para controlar la deriva en la señal a lo largo del tiempo, cuando el sensor está trabajando, a través de un control de temperatura.
In this thesis, using mainly Aerosol Assited Chemical Vapor Deposition, AACVD, as a synthesis methodology for nanostructured tungsten oxide, different gas sensors have been manufactured. To study the improvement in the selectivity and sensitivity of gas sensors based on tungsten oxide, they have been decorated, via AACVD, with nanoparticles of other metal oxides to create heterojunctions to obtain an increase in electronic sensitivity, in the chemical properties of the material or at the same time in both. Particularly, we have worked on different tungsten oxide nanowire sensors decorated with nanoparticles of nickel oxide, cobalt oxide and iridium oxide resulting in sensors with a large increase in response and selectivity towards hydrogen sulfide, for ammonia. and for nitrogen oxide respectively at trace concentrations. In addition, the reaction mechanisms that take place between oxygen species adsorbed on the sensor surface when it interacts with a gas have been also studied. Furthermore, efforts have been put on trying to control the surface potential of the nanostructured layers to control the drift in the signal over time, when operating the sensors, through temperature control.
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Priščák, Juraj. "Charakterizace senzitivních nanomateriálů pro MOX senzory plynů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442521.

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This thesis deals with one-dimensional (1D) and two-dimensional nanomaterials (2D) in terms of their utilization for new types of gas sensors. Thesis focuses on study of sensing elements for gas sensors based on semiconductor metal oxide materials (MOX) and their manufacturing technology. The objective of the thesis is the design and implementation of a sensing elements formed by selected nanomaterials based on the structure of interdigital electrodes. The result of the practical part of the thesis is the characterization and comparison of materials in terms of their detection parameters in the presence of selected test gases. The first part of thesis hierarchically defines chemoresistive gas sensor, characterizes and explains its operation principle. Second part studies 1D and 2D nanomaterials of sensing elements for MOX chemoresistive gas sensors, contains a research of their properties and describes their methods of manufacturing and implementation. The last part deals with the implementation of the sensitive layer of the sensor with selected nanomaterials, characterizes and compares their detection properties.
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Mehdi, Aghaei Sadegh. "Electronic and Magnetic Properties of Two-dimensional Nanomaterials beyond Graphene and Their Gas Sensing Applications: Silicene, Germanene, and Boron Carbide." FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3389.

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The popularity of graphene owing to its unique properties has triggered huge interest in other two-dimensional (2D) nanomaterials. Among them, silicene shows considerable promise for electronic devices due to the expected compatibility with silicon electronics. However, the high-end potential application of silicene in electronic devices is limited owing to the lack of an energy band gap. Hence, the principal objective of this research is to tune the electronic and magnetic properties of silicene related nanomaterials through first-principles models. I first explored the impact of edge functionalization and doping on the stabilities, electronic, and magnetic properties of silicene nanoribbons (SiNRs) and revealed that the modified structures indicate remarkable spin gapless semiconductor and half-metal behaviors. In order to open and tune a band gap in silicene, SiNRs were perforated with periodic nanoholes. It was found that the band gap varies based on the nanoribbon’s width, nanohole’s repeat periodicity, and nanohole’s position due to the quantum confinement effect. To continue to take advantage of quantum confinement, I also studied the electronic and magnetic properties of hydrogenated silicene nanoflakes (SiNFs). It was discovered that half-hydrogenated SiNFs produce a large spin moment that is directly proportional to the square of the flake’s size. Next, I studied the adsorption behavior of various gas molecules on SiNRs. Based on my results, the SiNR could serve as a highly sensitive gas sensor for CO and NH3 detection and a disposable gas sensor for NO, NO2, and SO2. I also considered adsorption behavior of toxic gas molecules on boron carbide (BC3) and found that unlike graphene, BC3 has good sensitivity to the gas molecules due to the presence of active B atoms. My findings divulged the promising potential of BC3 as a highly sensitive molecular sensor for NO and NH3 detection and a catalyst for NO2 dissociation. Finally, I scrutinized the interactions of CO2 with lithium-functionalized germanene. It was discovered that although a single CO2 molecule was weakly physisorbed on pristine germanene, a significant improvement on its adsorption energy was found by utilizing Li-functionalized germanene as the adsorbent. My results suggest that Li-functionalized germanene shows promise for CO2 capture.
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Nagelli, Enoch A. "CONTROLLED FUNCTIONALIZATION AND ASSEMBLY OF GRAPHENE NANOSTRUCTURES FOR SENSING AND ENERGY STORAGE." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1402278821.

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Naik, A. J. T. "Hetero-junction and nanomaterial systems for metal oxide semiconductor based gas sensing." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1463687/.

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Investigations into a number of hetero-junction and nanoceramic materials systems for metal oxide semiconductor (MOS) gas sensing for potential environmental and bio-sensing applications are presented. The hetero-junction study encompasses investigations into various composite n-n hetero-contact systems such as WO3-ZnO and SnO2-ZnO and a p-n hetero-contact system, specifically CTO (Chromium Titanium Oxide) - ZnO. The facile fabrication of various arrays of hetero-junction MOS gas sensor devices has been demonstrated. A simple change in the compositional contribution of an individual metal oxide within a composite, exhibits the ability to tune the composite’s responsivity and selectivity. The hetero-junction systems were characterized by various techniques including Scanning Electron Microscopy (SEM), Raman spectroscopy, X-Ray Diffraction (XRD) and X-Ray Photoelectron Spectroscopy (XPS) and the influence of the physical and chemical properties of these materials towards the associated gas sensing properties, deduced. Further, the influence of fundamental properties of junctions such as contact potential and packing structure, towards the sensing properties, are also discussed. The nanomaterials study encompasses investigation into ZnO semiconducting oxides fabricated by various emerging fabrication technologies including Continuous Hydrothermal Flow Synthesis (CHFS) and other relatively high temperature routes. The chemical and physical properties of the nanoceramics have been investigated by various techniques including Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and Brunauer Emmett Teller (BET) surface area measurements. The investigation demonstrates emerging techniques for the production of nanomaterials, which can be successfully used in MOS gas sensing for the desired applications. Further, the study shows that the behaviour of the nanomaterials is complex and material surface area is not the only deterministic factor of enhanced responsivities, but microstructural factors such as morphology and particle size, as well as heat-treatment conditions are all influential over the overall sensing properties. This thesis presents an overview of emerging material systems for MOS gas sensing applications.
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Miller, Derek. "Advancing electronic structure characterization of semiconducting oxide nano-heterostructures for gas sensing." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492639729205609.

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Hong, Li Yang, and 洪力揚. "Ultraviolet Light and Nitric Oxide Gas Sensing Using Metal Oxide Semiconducting Nanomaterials." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/vj9b83.

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博士
國立清華大學
材料科學工程學系
105
The scope of this thesis covers the fabrication of a single titanium oxide nanodot (ND) by atomic force microscopy (AFM) nanolithography, growth of Cu2O nanoparticle (NP) modified ZnO nanowires (NWs) and applications for ultraviolet (UV) light and NO gas sensing. In the first part of thesis, we report on the fabrication of a single titanium oxide ND UV sensor by AFM nanolithography. A single titanium NW is first fabricated by AFM nanomachining and gold contact electrodes are then created by photolithography. By subsequent AFM nano-oxidation, a single titanium oxide ND sensor is produced. Two types of ND sensors, namely ohmic contact and Schottky contact, have been obtained and the sensitivities are around 0.25 and 320, respectively, under ultraviolet illumination. The rise and the reset times of the Schottky contact sensor are also significantly faster. In the second part of thesis, gas sensing using the titanium oxide ND sensor is realized by the photo-activation and the photo-recovery approaches. It is found that a senor with a smaller ND has better performance than a larger one. A response of 31%, a response time of 91 s, and a recovery time of 184 s have been achieved at a concentration of 10 ppm for a ND with a size of around 80 nm. The present work demonstrates the potential application of single metal oxide NDs for gas sensing with performance that can be compared with metal oxide nanowire gas sensors. In the third part of thesis, we report on the NO gas sensing performance of Cu2O nanoparticle (NP) modified ZnO nanowires (NWs) under ambient environment. ZnO NWs are grown on Si substrates using a solution method and then modified with Cu2O NPs by photoreduction. The response of the NP modified NWs sensor to 1 ppm NO gas is 353%, which is 14.7 times as high as that of unmodified NW sensor. A response of 8.5% has been achieved at 60 ppb, showing the good potential for low concentration NO sensing.
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Books on the topic "Nanomaterials - Gas Sensing"

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Thomas, Sabu, Nirav Joshi, and Vijay K. Tomer. Functional Nanomaterials: Advances in Gas Sensing Technologies. Springer, 2020.

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Thomas, Sabu, Nirav Joshi, and Vijay K. Tomer. Functional Nanomaterials: Advances in Gas Sensing Technologies. Springer Singapore Pte. Limited, 2021.

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Shimpi, Navinchandra Gopal. Carbon-Based Nanomaterials and Nanocomposites for Gas Sensing. Elsevier, 2023.

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Shimpi, Navinchandra Gopal. Carbon-Based Nanomaterials and Nanocomposites for Gas Sensing. Elsevier, 2021.

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Toxic Gas Sensors and Biosensors. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901175.

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The book focuses on novel sensor materials and their environmental and healthcare applications, such as NO2 detection, toxic gas and biosensing, hydrazine determination, glucose sensing and the detection of toxins and pollutants on surfaces. Materials covered include catalytic nanomaterials, metal oxides, perovskites, zeolites, spinels, graphene-based gas sensors, CNT/Ni nanocomposites, glucose biosensors, single and multi-layered stacked MXenes, black phosphorus, transition metal dichalcogenides and P3OT thin films.
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Book chapters on the topic "Nanomaterials - Gas Sensing"

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Tittl, Andreas, Harald Giessen, and Na Liu. "Plasmonic Gas and Chemical Sensing." In Nanomaterials and Nanoarchitectures, 239–72. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9921-8_8.

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Gabriel Kaufmann, Claudir, Rubia Young Sun Zampiva, Marco Rossi, and Annelise Kopp Alves. "Carbon Nanotubes for Gas Sensing." In Environmental Applications of Nanomaterials, 55–71. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86822-2_4.

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Srivastava, Meenakshi, and Narendra Singh. "Metal Oxide Nanostructures for Gas Sensing Applications." In Nanomaterials-Based Sensing Platforms, 117–53. Boca Raton: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003199304-4.

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Raj, Sudarsan, and Aneeya K. Samantara. "Noble Metal Nanoparticles-Based Composites for Gas Sensing: Progress and Perspective." In Nanomaterials-Based Sensing Platforms, 213–43. Boca Raton: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003199304-7.

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Nair, Keerthi G., and P. Biji. "Carbon Nanomaterials for Hydrogen Gas Sensing Applications." In Carbon Composites, 163–90. New York: Apple Academic Press, 2023. http://dx.doi.org/10.1201/9781003331285-7.

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Shingange, Katekani, and Gugu H. Mhlongo. "Correlating Luminescence Characteristics to Gas-Sensing Performance of Metal Oxides Based Heterostructures." In Luminescent Nanomaterials, 163–78. New York: Jenny Stanford Publishing, 2022. http://dx.doi.org/10.1201/9781003277385-4.

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Ashraf, Waseem, Manika Khanuja, Abid Hussain, and P. K. Kulriya. "Functional 2D Nanomaterials for Selective Detection/Sensing of Hydrogen Gas: An Overview." In Gas Sensors, 185–207. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003278047-13.

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Semko, L. S., Ya I. Kruchek, and P. P. Gorbyk. "Gas-Sensing Composite Materials Based on Graphite and Polymers." In Nanomaterials and Supramolecular Structures, 369–82. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2309-4_28.

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Pearton, Stephen J., David P. Norton, and Fan Ren. "ZnO Nanowires for Gas and Bio-Chemical Sensing." In Metal Oxide Nanomaterials for Chemical Sensors, 321–43. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5395-6_10.

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Tao, Junguang, and Matthias Batzill. "Surface Science Studies of Metal Oxide Gas Sensing Materials." In Metal Oxide Nanomaterials for Chemical Sensors, 35–67. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5395-6_2.

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Conference papers on the topic "Nanomaterials - Gas Sensing"

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Bannov, Alexander G., Jan Prasek, Ondrej Jasek, Alexander A. Shibaev, and Lenka Zajickova. "Gas sensing properties of carbon nanomaterials." In 2016 39th International Spring Seminar on Electronics Technology (ISSE). IEEE, 2016. http://dx.doi.org/10.1109/isse.2016.7563238.

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Lyson-Sypien, B., A. Czapla, M. Lubecka, K. Zakrzewska, M. Radecka, A. Kusior, A. G. Balogh, S. Lauterbach, and H. J. Kleebe. "P2.7.3 Gas sensing properties of TiO2 - SnO2 nanomaterials." In 14th International Meeting on Chemical Sensors - IMCS 2012. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2012. http://dx.doi.org/10.5162/imcs2012/p2.7.3.

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Procek, Marcin, and Agnieszka Stolarczyk. "Influence of near UV irradiation on ZnO nanomaterials NO2 gas sensing properties." In 13th Conference on Integrated Optics: Sensors, Sensing Structures and Methods, edited by Przemyslaw Struk and Tadeusz Pustelny. SPIE, 2018. http://dx.doi.org/10.1117/12.2503471.

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Correia, José, Cátia Rodrigues, Ricardo Esteves, Ricardo Cesar Bezerra de Melo, José Gutiérrez, André Pereira, and João Ventura. "Energy Harvesting Under Harsh Conditions for the Oil & Gas Upstream Industry." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204877-ms.

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Abstract Environmental and safety sensing is becoming of high importance in the oil and gas upstream industry. However, present solutions to feed theses sensors are expensive and dangerous and there is so far no technology able to generate electrical energy in the operational conditions of oil and gas extraction wells. In this paper it is presented, for the first time in a relevant environment, a pioneering energy harvesting technology based on nanomaterials that takes advantage of fluid movement in oil extraction wells. A device was tested to power monitoring systems with locally harvested energy in harsh conditions environment (pressures up to 50 bar and temperatures of 50ºC). Even though this technology is in an early development stage this work opens a wide range of possible applications in deep underwater environments and in Oil and Gas extraction wells where continuous flow conditions are present.
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Ghosh, Dipannita, Md Ashiqur Rahman, Ali Ashraf, and Nazmul Islam. "Hydrogel and Graphene Embedded Piezoresistive Microcantilever Sensor for Solvent and Gas Flow Detection." In ASME 2022 17th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/msec2022-85544.

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Abstract Piezoresistive microcantilever sensor is widely used in sensing applications including liquid and gas flow detection. Microcantilevers can function as an embedded system if they are coated with polymers or nanomaterials to improve sensing performance. In this paper, we investigated the performance of piezoresistive microcantilevers (PMC) with and without additional coating. We studied the sensitivity of the PMC sensor after coating it with a three-dimensional porous hydrogel and piezoresistive graphene oxide layer. Hydrogel embedded piezoresistive microcantilever (EPM) showed better results than PMC during solvent sensing application. The resistance change for hydrogel embedded PMC was higher compared to bare PMC by 430% (3.2% to 17%) while detecting isopropyl alcohol (IPA), by approximately 1.5 orders of magnitude (0.19% to 5.7%) while detecting the presence of deionized water. Graphene Oxide coated PMC showed a wider detection range by 30 milliliter/min and 24% better sensitivity than bare PMC during the gas detection experiment. Additionally, we compared the experiment result with COMSOL simulation to develop a model for our embedded PMC sensing. Simulation shows significantly higher deflection of the EPM compared to the bare PMC (66.67% higher while detecting IPA, consistent with the trend observed during the experiment). The facile drop casting-based embedded microcantilever fabrication technique can lead to improved performance in different sensing applications. Our future work will focus on detecting biomolecules by using our constructed embedded systems.
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Alagh, Aanchal, Fatima Ezahra Annanouch, Jean Francois Colomer, and Eduard Llobet. "3D assembly of WS2 nanomaterial for H2S gas sensing application." In 2020 IEEE SENSORS. IEEE, 2020. http://dx.doi.org/10.1109/sensors47125.2020.9278733.

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Aleksandrova, Mariya. "Investigation of Conductive Organic Films Grown on Carbyne Gas Sensing Nanomaterial." In 2023 46th International Spring Seminar on Electronics Technology (ISSE). IEEE, 2023. http://dx.doi.org/10.1109/isse57496.2023.10168424.

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Lekshmi, M. S., and K. J. Suja. "Acetone gas sensing at room temperature using metal oxide semiconductor nanomaterial based gas sensor." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MICROELECTRONICS, SIGNALS AND SYSTEMS 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0003942.

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Yang, D., M. K. Fuadi, Z. Li, and I. Park. "Facile fabrication of heterogeneous nanomaterial array towards low-power and multiplexed gas sensing application." In 2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII). IEEE, 2013. http://dx.doi.org/10.1109/transducers.2013.6627333.

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MacNaughton, S., and S. Sonkusale. "SINGLE CHIP MICRO GC WITH INTEGRATED HETEROGENEOUS NANOMATERIAL SENSOR ARRAY FOR MULTIPARAMETER GAS SENSING." In 2014 Solid-State, Actuators, and Microsystems Workshop. San Diego: Transducer Research Foundation, 2014. http://dx.doi.org/10.31438/trf.hh2014.57.

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