Cold plasma-Metal Organic Framework (MOF)-177 breathable system for atmospheric remediation

Gorky, Fnu; Nambo, Apolo; Carreon, Maria L.

doi:10.1016/j.jcou.2021.101642

Cited by 23 publications

(19 citation statements)

References 46 publications

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“…The desorption patterns for SAPO crystals when employing methane are presented in Figure 5a− Based on Figure 5a−d, it is observed that the CH 4 desorption pattern is similar for all SAPO crystals with desorption occurring when plasma is off contrary to what we reported for MOF-177 in a previous study, where desorption occurred when the plasma was on. 8 A detailed OES analysis (Figures S2−S5) shows the presence of CH 4 and CO 2 active species in the gas phase. During desorption, the plasma discharge was maintained consistent for all the SAPO crystals with average power: 3.87 ± 0.10 Watts and average voltage: 8.9 ± 0.08 kV pk−pk , and frequency: 25.7 kHz as presented in Figure S6.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Plasma-Induced Desorption of Methane and Carbon Dioxide over Silico Alumino Phosphate Zeolites

Gorky

Nguyen

Krishnan

et al. 2023

ACS Appl. Energy Mater.

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The release of greenhouse gases (GHGs) has resulted in severe consequences to the environment that are accelerating with time and every day are more evident. Herein, we present the use of nonthermal plasma (NTP) to promote the desorption of GHSs such as methane and carbon dioxide over four silico alumino phosphate (SAPOs) zeolites having limiting pore sizes of 2.9 Å (SAPO-43), 3.4 Å (SAPO-56), 3.8 Å (SAPO-34), and 3.9 Å (SAPO-11). The desorption rates of the studied gases strongly depended on the acidity and limiting pore size of these zeolites. In general, the higher the acidity of the SAPO, the lowest the gas desorption rate. We postulated the possible diffusion regimes that influenced the carbon dioxide and methane desorption rates. Furthermore, we demonstrate the feasibility of desorbing these gases under Krypton plasma pulses. The low-temperature plasma activation of CH 4 and CO 2 presented here could lead potentially to the capture and controlled release of these GHGs.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Plasma-Induced Desorption of Methane and Carbon Dioxide over Silico Alumino Phosphate Zeolites

Gorky

Nguyen

Krishnan

et al. 2023

ACS Appl. Energy Mater.

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“…They may produce nitrosamines, nitramines, and amides through a photo-oxidized process, leading to possible carcinogenicity, mutagenicity, and reproductive effects. 71 Other agents for nitrosation are unprotonated amines, which are present in COFs; there is much attention on the nitrosation of secondary amines to provide stable secondary N -nitrosamines as a toxic compound. 72 Different techniques have been introduced for synthesizing COFs, such as mechanochemical grinding, solvothermal, microfluidic, ionothermal, microwave-assisted, and interfacial polymerization synthesis techniques.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in covalent organic frameworks (COFs) for wound healing and antimicrobial applications

et al. 2023

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“…The addition of air to the mixture is expected to allow for the oxidation of methane to CO and CO 2 via the oxygen. Some studies have been carried out and found that methanol could also be made from a plasma, which was improved with catalysts − as well as adsorbents . With input CO 2 mole fractions of approximately 11%, it is initially unclear whether there will be a net creation of CO 2 by oxidizing methane or a net consumption by dry reforming.…”

Section: Introductionmentioning

confidence: 99%

Longevity Demonstration of Methane to C2 via a Nonthermal Plasma Microreactor

et al. 2023

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Hydrocarbon processing using plasmas has tremendous potential, yet there still exist many uncertainties pertaining to practical operation over long durations. Previously, it has been demonstrated that a nonthermal plasma operating in a DC glow regime can transform methane into C2 species (acetylene, ethylene, ethane) in a microreactor. Using a DC glow regime in a microchannel reactor allows for lower power consumption, at the expense of greater consequence of fouling. Since biogas can be a source of methane, a longevity study was undertaken to understand how the microreactor system would change over time with a feed mixture of simulated biogas (CO2, CH4) and air. Two different biogas mixtures were used, one of which contained 300 ppm H2S, while the other had no H2S. Potential difficulties observed from previous experiments included carbon deposition on the electrodes, which could interfere with the electrical characteristics of the plasma discharge as well as material deposition in the microchannel, which could affect gas flow. It was found that raising the temperature of the system to 120 °C helped prevent hydrocarbon deposition in the reactor. Purging the reactor periodically with dry air was also found to have positive effects as it removed carbon buildup on the electrodes themselves. Successful operation over a 50 h time period without any significant deterioration was demonstrated.

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Cold plasma-Metal Organic Framework (MOF)-177 breathable system for atmospheric remediation

Cited by 23 publications

References 46 publications

Plasma-Induced Desorption of Methane and Carbon Dioxide over Silico Alumino Phosphate Zeolites

Plasma-Induced Desorption of Methane and Carbon Dioxide over Silico Alumino Phosphate Zeolites

Recent advances in covalent organic frameworks (COFs) for wound healing and antimicrobial applications

Longevity Demonstration of Methane to C2 via a Nonthermal Plasma Microreactor

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