2D graphene supported nickel oxide nano-composite for fiber optic ethanol gas sensing, removal of azo dye, and biological activity

Applications of fiber optic sensors to battery monitoring have been increasing due to the growing need of enhanced battery management systems with accurate state estimations. The goal of this review is to discuss the advancements enabling the practical implementation of battery internal parameter measurements including local temperature, strain, pressure, and refractive index for general operation, as well as the external measurements such as temperature gradients and vent gas sensing for thermal runaway imminent detection. A reasonable matching is discussed between fiber optic sensors of different range capabilities with battery systems of three levels of scales, namely electric vehicle and heavy-duty electric truck battery packs, and grid-scale battery systems. The advantages of fiber optic sensors over electrical sensors are discussed, while electrochemical stability issues of fiber-implanted batteries are critically assessed. This review also includes the estimated sensing system costs for typical fiber optic sensors and identifies the high interrogation cost as one of the limitations in their practical deployment into batteries. Finally, future perspectives are considered in the implementation of fiber optics into high-value battery applications such as grid-scale energy storage fault detection and prediction systems.

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The nano-composite of Co-doped g-C3N4 and ZnO sensors for the rapid detection of BTEX gases: stability studies and gas sensing mechanism

Journal of Materials Science ◽

10.1007/s10853-020-05614-2 ◽

2020 ◽

Vol 56 (8) ◽

pp. 5041-5052

Author(s):

Leqi Hu ◽

Fuchao Jia ◽

Shuo Wang ◽

Xingyan Shao ◽

Xiaomei Wang ◽

...

Keyword(s):

Rapid Detection ◽

Gas Sensing ◽

Stability Studies ◽

Nano Composite ◽

Sensing Mechanism ◽

Co Doped

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Reduced graphene oxide for fiber-optic toluene gas sensing

Optics Express ◽

10.1364/oe.24.028290 ◽

2016 ◽

Vol 24 (25) ◽

pp. 28290 ◽

Cited By ~ 22

Author(s):

Yi Xiao ◽

Jianhui Yu ◽

Long Shun ◽

Shaozao Tan ◽

Xiang Cai ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Fiber Optic ◽

Gas Sensing ◽

Reduced Graphene

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Design and Synthesis of Novel 2D Porous Zinc Oxide-Nickel Oxide Composite Nanosheets for Detecting Ethanol Vapor

Nanomaterials ◽

10.3390/nano10101989 ◽

2020 ◽

Vol 10 (10) ◽

pp. 1989

Author(s):

Yuan-Chang Liang ◽

Yen-Cheng Chang ◽

Wei-Cheng Zhao

Keyword(s):

Zinc Oxide ◽

Nickel Oxide ◽

Active Sites ◽

Gas Sensing ◽

Ethanol Vapor ◽

Gas Diffusion ◽

High Specific Surface Area ◽

Sputtering Deposition ◽

Vapor Sensing ◽

Sensing Performance

The porous zinc oxide-nickel oxide (ZnO-NiO) composite nanosheets were synthesized via sputtering deposition of NiO thin film on the porous ZnO nanosheet templates. Various NiO film coverage sizes on porous ZnO nanosheet templates were achieved by changing NiO sputtering duration in this study. The microstructures of the porous ZnO-NiO composite nanosheets were investigated herein. The rugged surface feature of the porous ZnO-NiO composite nanosheets were formed and thicker NiO coverage layer narrowed the pore size on the ZnO nanosheet template. The gas sensors based on the porous ZnO-NiO composite nanosheets displayed higher sensing responses to ethanol vapor in comparison with the pristine ZnO template at the given target gas concentrations. Furthermore, the porous ZnO-NiO composite nanosheets with the suitable NiO coverage content demonstrated superior gas-sensing performance towards 50–750 ppm ethanol vapor. The observed ethanol vapor-sensing performance might be attributed to suitable ZnO/NiO heterojunction numbers and unique porous nanosheet structure with a high specific surface area, providing abundant active sites on the surface and numerous gas diffusion channels for the ethanol vapor molecules. This study demonstrated that coating of NiO on the porous ZnO nanosheet template with a suitable coverage size via sputtering deposition is a promising route to fabricate porous ZnO-NiO composite nanosheets with a high ethanol vapor sensing ability.

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Electrochromic properties of nano-composite nickel oxide film

Applied Surface Science ◽

10.1016/j.apsusc.2007.11.022 ◽

2008 ◽

Vol 254 (11) ◽

pp. 3357-3363 ◽

Cited By ~ 37

Author(s):

Sheng-Hui Lin ◽

Fu-Rong Chen ◽

Ji-Jung Kai

Keyword(s):

Oxide Film ◽

Nickel Oxide ◽

Nano Composite ◽

Electrochromic Properties ◽

Nickel Oxide Film

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Fabrication of Transition-metal (Zn, Mn, Cu)-based MOFs as Efficient Sensor Materials for Detection of H2 Gas by Clad Modified Fiber Optic Gas Sensor Technique

10.21203/rs.3.rs-250500/v1 ◽

2021 ◽

Author(s):

M Nagoor Meeran ◽

S.P. Saravanan ◽

H.H Hegazy

Keyword(s):

Transition Metal ◽

Fiber Optic ◽

Gas Sensing ◽

High Sensitivity ◽

Long Term Stability ◽

Sensing Material ◽

Sensor Technique ◽

Recent Developments ◽

Metal Organic ◽

Elevated Surface

Abstract Recent research demonstrate that promising gas sensing materials are called metal-organic structures (MOFs) and their products due to their tunable form, elevated surface area, and extremely porous structure and physisorption towards gases with relatively low temperature.In this report, recent developments in transition-metal (Zn, Mn, Cu)-based MOFs and their derivatives are synthesized as sensing materials. The sensors samples were analyzed by XRD, SEM, TEM, BET and XPS in order to know the textural, structural and electronic state of the samples. Fiber optic clad modified sensors were fabricated and tested gas sensing properties towards H2 gas with various concentrations (0-1000 ppm). Among the three sensing material, Zn doped MOFs sensor showed outstanding selectivity with high sensitivity (115 counts/kpa) towards H2 gas. Moreover, it has shown high response (20 s) and recovery time (27 s) as well as long term stability. The designed sensors may be required to apply to the production of an outstanding sensor for H2 for commercial uses.

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