Electric-Field Assisted Desorption of Water Molecules in DNA Functionalized CNT Network

Paul, Ambarish; Bhattacharya, Baidurya; Bhattacharyya, Tarun Kanti

doi:10.1109/jsen.2014.2384050

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…With increase in electric field E the dipoles increasingly align themselves in the direction of the field to form a polarized system of mutually interacting dipoles and thereby increasing the potential energy of the system. Desorption allows the dipoles to return to a state of lower potential energy [50].…”

Section: Plasma Catalysismentioning

confidence: 99%

Electrocatalytic reduction of carbon dioxide under plasma DBD process

Amouroux¹,

Cavadias²

2017

J. Phys. D: Appl. Phys.

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Carbon dioxide can be converted, by reaction with hydrogen, into fine chemicals and liquid fuels such as methanol and DME. Methane production by the Sabatier reaction opens the way of carbon recycling for a circular economy of carbon resources. The catalytic process of methanation of carbon dioxide produces two molecules of water as a by-product. A current limitation in the CO2 methanation is the ageing of catalysts, mainly due to water adsorption during the process. To avoid this adsorption, the process is operated at high temperature (300 °C–400 °C), leading to carbon deposition on the catalyst and its deactivation. To overcome this problem, a methanation plasma-catalytic process has been developed, which achieves high CO2 conversion rate (80%), and a selectivity close to 100%, working from room temperature to 150 °C, instead of 300 °C–400 °C for the thermal catalytic process. The main characteristics of this process are high-voltage pulses of few nanoseconds duration, activating the adsorption of CO2 in bent configuration and the polarization of the catalyst. The key step in this process is the desorption of water from the polarized catalyst. The high CO2 conversion at low temperature could be explained by the creation of a plasma inside the nanopores of the catalyst.

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Section: Plasma Catalysismentioning

confidence: 99%

Electrocatalytic reduction of carbon dioxide under plasma DBD process

Amouroux¹,

Cavadias²

2017

J. Phys. D: Appl. Phys.

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“…After IA-CNT channels were exposed to moisture, water molecules were absorbed on the surfaces of IA-CNTs. During this process, a charge-transfer incident took place because of the difference in the electrical potential between water molecules and IA-CNTs. , In turn, this showed that the electrical conductivity could change under the humid environment (Figure a). Furthermore, electrical conductivity variation could occur by the difference in induced charge transfer of various humid contents.…”

Section: Resultsmentioning

confidence: 99%

Magnetically Aligned Iron Oxide/Gold Nanoparticle-Decorated Carbon Nanotube Hybrid Structure as a Humidity Sensor

Lee

Mulmi

Thangadurai

et al. 2015

ACS Appl. Mater. Interfaces

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Functionalized carbon nanotubes (f-CNTs), particularly CNTs decorated with nanoparticles (NPs), are of great interest because of their synergic effects, such as surface-enhanced Raman scattering, plasmonic resonance energy transfer, magnetoplasmonic, magnetoelectric, and magnetooptical effects. In general, research has focused on a single type of NP, such as a metal or metal oxide, that has been modified on a CNT surface. In this study, however, a new strategy is introduced for the decoration of two different NP types on CNTs. In order to improve the functionality of modified CNTs, we successfully prepared binary NP-decorated CNTs, namely, iron oxide/gold (Au) NP-decorated CNTs (IA-CNTs), which were created through two simple reactions in deionized water, without high temperature, high pressure, or harsh reducing agents. The physicochemical properties of IA-CNTs were characterized by ultraviolet/visible spectroscopy, Fourier transform infrared spectroscopy, a superconducting quantum interference device, scanning electron microscopy, and transmission electron microscopy. In this study, IA-CNTs were utilized to detect humidity. Magnetic IA-CNTs were aligned on interdigitated platinum electrodes under external magnetic fields to create a humidity-sensing channel, and its electrical conductivity was monitored. As the humidity increased, the electrical resistance of the sensor also increased. In comparison with various gases, for example, H2, O2, CO, CO2, SO2, and dry air, the IA-CNT-based humidity sensor exhibited high-selectivity performances. IA-CNTs also responded to heavy water (D2O), and it was established that the humidity detection mechanism had D2O-sensing capabilities. Further, the humidity from human out-breathing was also successfully detected by this system. In conclusion, these unique IA-CNTs exhibited potential application as gas detection materials.

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Electrostimulated Desorption Hydrogen Sensor Based on Onion-Like Carbons as a Sensing Element

Olariu

Arcire

2018

Journal of Elec Materi

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Electric-Field Assisted Desorption of Water Molecules in DNA Functionalized CNT Network

Cited by 8 publications

References 20 publications

Electrocatalytic reduction of carbon dioxide under plasma DBD process

Electrocatalytic reduction of carbon dioxide under plasma DBD process

Magnetically Aligned Iron Oxide/Gold Nanoparticle-Decorated Carbon Nanotube Hybrid Structure as a Humidity Sensor

Electrostimulated Desorption Hydrogen Sensor Based on Onion-Like Carbons as a Sensing Element

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