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Keerthana L, Dharmalingam G. Chemically engineered plasmonic Au-gallium oxide nanocomposites for harsh environment applications: an investigation into thermal and chemical robustness. Phys Chem Chem Phys 2024; 26:15018-15031. [PMID: 38742899 DOI: 10.1039/d3cp05831j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Enhanced thermal, chemical, and mechanical properties of different metal nanoparticle morphologies integrated with metal oxides have been reported in multiple instances. The chemical and material robustness of metal nanoparticles incorporated surficially and into the bulk of distinct as well as spontaneously formed morphologies of metal oxides through solution-based and microwave-based approaches are investigated in this study. These composites were tested for their chemical and material robustness by exposing films formed on quartz substrates to high temperatures (800 °C) in an air ambient as well as to extreme conditions of pH, often encountered in harsh environment applications such as sensing and catalysis. The changes in the optical properties and crystallinity have been studied using in situ absorption and ex situ X-ray diffraction analyses and electron microscopy. The trends observed with respect to the changes in the plasmonic absorbance were validated theoretically and found to be in reasonable agreement with the experimental data. Confirmations of the phenomena occurring in different morphologies and architectures were thereby corroborated through careful interpretations from experiments and predictions from theoretical models. We, therefore, report a simple solution-based process for achieving engineered harsh environment-compatible nanocomposites through studies specifically tailored for such applications such as catalysis, sensing, energy storage, and enhanced luminescence.
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Affiliation(s)
- L Keerthana
- Plasmonic Nanomaterials Laboratory, PSG Institute of Advanced Studies, Coimbatore 641004, India.
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An approach towards the synthesis of faceted Ga2O3 nano- and micro-structures through the microwave process. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02572-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Houlihan NM, Karker N, Potyrailo RA, Carpenter MA. High Sensitivity Plasmonic Sensing of Hydrogen over a Broad Dynamic Range Using Catalytic Au-CeO 2 Thin Film Nanocomposites. ACS Sens 2018; 3:2684-2692. [PMID: 30484629 DOI: 10.1021/acssensors.8b01193] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Next-generation gas-sensor technologies are needed for diverse applications including environmental surveillance, occupational safety, and industrial process control. However, the dynamic range using existing sensors is often too narrow to meet demands. In this work, plasmonic films of Au-CeO2 that detect hydrogen with 0.38% and 60% lower and upper detection limits in an oxygen-free atmosphere experiment are demonstrated. The observed 15 nm peak shift was 4 times stronger versus other plasmonic H2 sensors. The proposed sensing mechanism that involves H2 dissociation by Auδ+ nanoparticles was validated using XPS, kinetics, and Arrhenius studies. Our understanding of this remarkable sensing behavior in oxygen-free conditions opens new horizons for packaging, art conservation, industrial process control, and other applications where conventional oxygen-dependent sensors lack broad dynamic range.
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Affiliation(s)
- Nora M. Houlihan
- SUNY Polytechnic Institute, College of Nanoscale Engineering and Technology Innovation, 257 Fuller Road, Albany, New York 12203, United States
| | - Nicholas Karker
- SUNY Polytechnic Institute, College of Nanoscale Engineering and Technology Innovation, 257 Fuller Road, Albany, New York 12203, United States
| | | | - Michael A. Carpenter
- SUNY Polytechnic Institute, College of Nanoscale Engineering and Technology Innovation, 257 Fuller Road, Albany, New York 12203, United States
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Jee Y, Yu Y, Abernathy HW, Lee S, Kalapos TL, Hackett GA, Ohodnicki PR. Plasmonic Conducting Metal Oxide-Based Optical Fiber Sensors for Chemical and Intermediate Temperature-Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:42552-42563. [PMID: 30430821 DOI: 10.1021/acsami.8b11956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The demand for real-time sensors in harsh environments at elevated temperature is significant and increasing. In this manuscript, the chemical and temperature sensing using the optical response through the practical fiber platform is demonstrated, and principle component analysis is coupled with targeted experimental film characterization to understand the fundamental sensing layer properties, which dominate measured gas sensing responses in complex gas mixtures. More specifically, tin-doped indium oxide-decorated sensors fabricated with the sol-gel method show stable and stepwise transmission responses varying over a wide range of H2 concentration (5-100%) at 250-350 °C as well as responses to CH4 and CO to a lesser extent. Measured responses are attributed to modifications to the surface plasmon resonance absorption in the near-infrared range and are dominated by the highest concentrations of the most-reducing analyte based upon systematic mixed gas stream experiments. Principal component analysis is utilized for this type of sensor to improve the quantitative and qualitative understanding of responses, clearly identifying that the dominant principle component (PC #1) accounts for ∼78% of total data variance. Correlations between PC #1 and the experimentally derived free carrier concentration confirm that this material property plays the strongest role on the ITO gas sensing mechanism, while correlations between the free carrier mobility and the second most important principle component (PC #2) suggest that this quantity may play a significant but secondary role. As such, the results presented here clarify the relationship between generalized principle components and fundamental sensing materials properties thereby suggesting the pathway toward improved multicomponent gas speciation through sensor layer engineering. The work presented represents a significant step toward the ultimate objective of optical waveguide sensors integrated with multivariate data analytics for multiparameter monitoring with a single sensor element.
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Affiliation(s)
- Youngseok Jee
- United States Department of Energy , National Energy Technology Laboratory , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
- AECOM , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
| | - Yang Yu
- United States Department of Energy , National Energy Technology Laboratory , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
- AECOM , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
| | - Harry W Abernathy
- United States Department of Energy , National Energy Technology Laboratory , 3610 Collins Ferry Road , Morgantown , West Virginia 26507 , United States
- AECOM , 3610 Collins Ferry Road , Morgantown , West Virginia 26507 , United States
| | - Shiwoo Lee
- United States Department of Energy , National Energy Technology Laboratory , 3610 Collins Ferry Road , Morgantown , West Virginia 26507 , United States
- AECOM , 3610 Collins Ferry Road , Morgantown , West Virginia 26507 , United States
| | - Thomas L Kalapos
- United States Department of Energy , National Energy Technology Laboratory , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
- AECOM , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
| | - Gregory A Hackett
- United States Department of Energy , National Energy Technology Laboratory , 3610 Collins Ferry Road , Morgantown , West Virginia 26507 , United States
| | - Paul R Ohodnicki
- United States Department of Energy , National Energy Technology Laboratory , 626 Cochrans Mill Road , Pittsburgh , Pennsylvania 15236 , United States
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Poole ZL, Ohodnicki PR. Thermal Emissivity-Based Chemical Spectroscopy through Evanescent Tunneling. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3111-3114. [PMID: 26901747 DOI: 10.1002/adma.201505758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/06/2016] [Indexed: 06/05/2023]
Abstract
A new spectroscopic technique is presented, with which environmentalchemistry-induced thermal emissivity changes of thin films are extracted with high isolation through evanescent tunneling. With this method the hydrogen-induced emissivity changes of films of TiO2 , Pd-TiO2 , and Au-TiO2 , with properties of high conductivity, hydrogen chemisorption, and plasmonic activity, are characterized in the UV-vis and NIR wavelength ranges, at 1073 K.
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Affiliation(s)
- Zsolt L Poole
- National Energy Technology Laboratory, 626 Cochrans Mill Rd, Pittsburgh, PA, 15236, USA
| | - Paul R Ohodnicki
- National Energy Technology Laboratory, 626 Cochrans Mill Rd, Pittsburgh, PA, 15236, USA
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