Radiation-Induced Chemistry of Carbon Dioxide: A Pathway to Close the Carbon Loop for a Circular Economy

Ramirez-Corredores, Maria Magdalena; Gadikota, Greeshma; Huang, Erin E.; Gaffney, Anne M.

doi:10.3389/fenrg.2020.00108

Cited by 15 publications

(7 citation statements)

References 104 publications

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“…Herein, we exploit high‐energy ionizing radiation as a promising method for aqueous CO 2 reduction [19] . As the reducing radicals are directly formed in water at room temperature, this method is effective without requiring the use of any catalyst.…”

Section: Introductionmentioning

confidence: 99%

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO₂ Conversion at Room Temperature

Gharib

Wang

et al. 2021

ChemPhysChem

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The present study proposes a new approach for direct CO2 conversion using primary radicals from water irradiation. In order to ensure reduction of CO2 into CO2 -• by all the hydrated electrons, we use formate ions to scavenge simultaneously the parent oxidizing radicals H • and OH • producing the same transient CO2 -• radicals. Conditions are optimized to obtain the highest conversion yield of CO2. The goal is achieved under mild conditions of room temperature, neutral pH and 1 atm of CO2 pressure. All the available radicals are exploited for selectively converting CO2 into oxalate that is accompanied by H2 evolution. The mechanism presented accounts for the results and also sheds light on the data in the literature. The radiolytic approach is a mild and scalable route of direct CO2 capture at the source in industry and the products, oxalate salt and H2, can be easily separated.

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Section: Introductionmentioning

confidence: 99%

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO₂ Conversion at Room Temperature

Gharib

Wang

et al. 2021

ChemPhysChem

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“…Recently, the use of a plasma treatment has been reported as another efficient strategy for the modification of the surface of the nitrogen-doped catalyst aiming to an efficient control of the CO/H 2 ratio [24]. Ji and co-authors [24] developed N-doped nanotube arrays that were subjected to a Ar-plasma treatment during different treatment times (5,10,15,25, and 40 min) to modify the surface chemistry of the N-doped carbon catalyst. They observed that both N content and the nature of the N functionalities can be adjusted by controlling the plasma treatment time.…”

Section: Syngas Productionmentioning

confidence: 99%

“…The conversion of CO 2 into value-added products by chemical reactions seems to be the most promising and attractive solution since, together with the reduction of the atmospheric CO 2 levels, CO 2 is efficiently recycled stablishing an ideal zero-emission carbon balance. CO 2 can be converted to added-value products by photochemical [1][2][3][4], thermochemical [5][6][7][8], radiochemical [9,10], biochemical [11][12][13][14], and electrochemical [15][16][17][18] strategies. However, the most interesting alternative is the capture and use of CO 2 as raw material to produce various products (Table 1) through its electrochemical reduction since this is a flexible and controllable process with mild and safe operating conditions and low equipment cost, which also allows coupling environmentally friendly non-fossil energy from renewable sources.…”

Section: Introductionmentioning

confidence: 99%

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

et al. 2021

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The global warming and the dangerous climate change arising from the massive emission of CO2 from the burning of fossil fuels have motivated the search for alternative clean and sustainable energy sources. However, the industrial development and population necessities make the decoupling of economic growth from fossil fuels unimaginable and, consequently, the capture and conversion of CO2 to fuels seems to be, nowadays, one of the most promising and attractive solutions in a world with high energy demand. In this respect, the electrochemical CO2 conversion using renewable electricity provides a promising solution. However, faradaic efficiency of common electro-catalysts is low, and therefore, the design of highly selective, energy-efficient, and cost-effective electrocatalysts is critical. Carbon-based materials present some advantages such as relatively low cost and renewability, excellent electrical conductivity, and tunable textural and chemical surface, which show them as competitive materials for the electro-reduction of CO2. In this review, an overview of the recent progress of carbon-based electro-catalysts in the conversion of CO2 to valuable products is presented, focusing on the role of the different carbon properties, which provides a useful understanding for the materials design progress in this field. Development opportunities and challenges in the field are also summarized.

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“…EB, originated from accelerators, posses huge energy and hence ionization is substantially probabilistic. The ionization potential is very small fraction of deposited energy and therefore molecular excitation is highly promising with residual energy [41,42]. Ionization: XY XY + + e − Excitation: XY XY * The symbol implies radiation induced event, XY an organic molecule, XY + a positive ion, e − an electron, XY * excited molecules.…”

Section: Physical Phase (Ionization and Excitation)mentioning

confidence: 99%

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

et al. 2020

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Tailoring the characteristics of organic semiconductors including molecular semiconductor and conducting polymers is the frontline area of research for improving the performance of organic electronic devices. Electron beam treatment has been established as one of the easiest method in comparison to others like chemical doping, thermal processing, ozonolysis, UV and other ionizing radiation treatment, to tune the physico-chemical properties of organic semiconductors. High energy electron beam (EB) generated from an accelerators impinges energy to the material and causes several phenomena including doping, crosslinking, chain degradation, gas evolution, molecular structural modifications, oxidation and unsaturation. Such modifications lead to variation in electrical characteristics and consequently affect the overall device performances. In the present review we have focused on the different interaction processes of EB with organic semiconductors and its implications to tailor the performance of device comprising of it mainly gas sensors, field effect transistors, thermoelectric power generators and radiation dosimeters.

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Radiation-Induced Chemistry of Carbon Dioxide: A Pathway to Close the Carbon Loop for a Circular Economy

Cited by 15 publications

References 104 publications

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO₂ Conversion at Room Temperature

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO₂ Conversion at Room Temperature

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

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Radiation-Induced Chemistry of Carbon Dioxide: A Pathway to Close the Carbon Loop for a Circular Economy

Cited by 15 publications

References 104 publications

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO2 Conversion at Room Temperature

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO2 Conversion at Room Temperature

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

Electron Beam Induced Tailoring of Electrical Characteristics of Organic Semiconductor Films

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Product

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Radiolytic Approach for Efficient, Selective and Catalyst‐free CO₂ Conversion at Room Temperature

Radiolytic Approach for Efficient, Selective and Catalyst‐free CO₂ Conversion at Room Temperature