CO2 adsorption on gas-phase Cu4−xPtx (x = 0–4) clusters: a DFT study

2018 ◽  
Vol 20 (25) ◽  
pp. 17071-17080 ◽  
Author(s):  
Luis E. Gálvez-González ◽  
J. Octavio Juárez-Sánchez ◽  
Rafael Pacheco-Contreras ◽  
Ignacio L. Garzón ◽  
Lauro Oliver Paz-Borbón ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Phase ◽  
Noble Metal ◽  
Metal Clusters ◽  
Co2 Adsorption ◽  
Value Added ◽  
Dft Study ◽  
Novel Materials

Transition and noble metal clusters have proven to be critical novel materials, potentially offering major advantages over conventional catalysts in a range of value-added catalytic processess such as carbon dioxide transformation to methanol.

scholarly journals Photosensitized Reduction of Carbon Dioxide in Solution Using Noble-Metal Clusters for Electron Transfer

1995 ◽  
Vol 50 (2-3) ◽  
pp. 283-291 ◽  
Author(s):  
Naoki Toshima ◽  
Yumi Yamaji ◽  
Toshiharu Teranishi ◽  
Tetsu Yonezawa
Keyword(s):  
Carbon Dioxide ◽  
Noble Metal ◽  
Methyl Viologen ◽  
Metal Clusters ◽  
Ethylenediaminetetraacetic Acid ◽  
Colloidal Dispersion ◽  
Disodium Salt ◽  
Air Treatment ◽  
Alcohol Reduction ◽  
Ethylenediaminetetraacetic Acid Disodium Salt

Abstract Carbon dioxide was reduced to methane by visible-light irradiation of a solution composed of tris(bipyridine)ruthenium(III) as photosensitizer, ethylenediaminetetraacetic acid disodium salt as sacrificial reagent, methyl viologen as electron relay, and a colloidal dispersion of polymer-protected noble-metal clusters, prepared by alcohol-reduction, as catalyst. Among the noble-metal clusters examined, Pt clusters showed the highest activity for the formation of methane as well as hydrogen. In order to improve the activity, oxidized clusters and bimetallic clusters were also applied. For example, the CH4 yield in 3-h irradiation increased from 51 x 10-3 μmol with unoxidized Pt clusters to 72 x 10-3 μmol with partially oxidized ones. In the case of Pt/Ru bimetalic systems, the improvement of the catalytic activity by air treatment was much greater than in case of monometallic clusters.

Photosensitized Reduction of Carbon Dioxide in Solution Using Noble-Metal Clusters for Electron Transfer

ENERGYO ◽  
2018 ◽  
Author(s):  
Naoki Toshima ◽  
Yumi Yamaji ◽  
Toshiharu Teranishi ◽  
Tetsu Yonezawa
Keyword(s):  
Carbon Dioxide ◽  
Electron Transfer ◽  
Noble Metal ◽  
Metal Clusters

Application of Disk Aerators to Recarbonation of Alkaline Wastewater from Wet Gasification of Carbide

1991 ◽  
Vol 24 (7) ◽  
pp. 277-284 ◽  
Author(s):  
E. Gomólka ◽  
B. Gomólka
Keyword(s):  
Carbon Dioxide ◽  
Liquid Phase ◽  
Gas Phase ◽  
Flue Gas ◽  
Carbonic Acid ◽  
Low Cost ◽  
Flue Gases ◽  
Carbon Dioxide Content ◽  
Patent Claim ◽  
Phase Dispersion

Whenever possible, neutralization of alkaline wastewater should involve low-cost acid. It is conventional to make use of carbonic acid produced via the reaction of carbon dioxide (contained in flue gases) with water according to the following equation: Carbon dioxide content in the flue gas stream varies from 10% to 15%. The flue gas stream may either be passed to the wastewater contained in the recarbonizers, or. enter the scrubbers (which are continually sprayed with wastewater) from the bottom in oountercurrent. The reactors, in which recarbonation occurs, have the ability to expand the contact surface between gaseous and liquid phase. This can be achieved by gas phase dispersion in the liquid phase (bubbling), by liquid phase dispersion in the gas phase (spraying), or by bubbling and spraying, and mixing. These concurrent operations are carried out during motion of the disk aerator (which is a patent claim). The authors describe the functioning of the disk aerator, the composition of the wastewater produced during wet gasification of carbide, the chemistry of recarbonation and decarbonation, and the concept of applying the disk aerator so as to make the wastewater fit for reuse (after suitable neutralization) as feeding water in acetylene generators.

DFT study of CO2 adsorption properties on pristine, vacancy and doped graphenes

2021 ◽  
pp. 114436
Author(s):  
Chengrui Wang ◽  
Yanhong Fang ◽  
Huamei Duan ◽  
Guangfen Liang ◽  
Wanying Li ◽  
...  
Keyword(s):  
Co2 Adsorption ◽  
Adsorption Properties ◽  
Dft Study

N-Functionality Actuated Largely Improved CO2 Adsorption and Nanomolar Turn-on Detection of Organo-Toxins with Guest-Induced Fluorescence Modulation in Isostructural Diamondoid Frameworks

2021 ◽  
Author(s):  
Manpreet Singh ◽  
Athulya S. Palakkal ◽  
Renjith S. Pillai ◽  
Subhadip Neogi
Keyword(s):  
Carbon Dioxide ◽  
Functional Group ◽  
Co2 Adsorption ◽  
Metal Organic Frameworks ◽  
Turn On ◽  
Metal Organic ◽  
Fluorescence Modulation

Metal-organic frameworks (MOFs) have surfaced as incipient class of multifaceted materials for selective carbon dioxide (CO2) adsorption and luminescent detection of assorted classes of lethal organo-aromatics, where functional group assisted...

CO 2 Conversion to Value‐Added Gas‐Phase Products: Technology Overview and Catalysts Selection

2021 ◽  
pp. 175-203
Author(s):  
Qi Zhang ◽  
Laura Pastor‐Pérez ◽  
Xiangping Zhang ◽  
Sai Gu ◽  
Tomas R Reina
Keyword(s):  
Gas Phase ◽  
Value Added

Light-driven reduction of carbon dioxide: Altering the reaction pathways and designing photocatalysts toward value-added and renewable fuels

2021 ◽  
Vol 237 ◽  
pp. 116547
Author(s):  
Quyet Van Le ◽  
Van-Huy Nguyen ◽  
Trinh Duy Nguyen ◽  
Ajit Sharma ◽  
Gul Rahman ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Value Added ◽  
Reaction Pathways ◽  
Renewable Fuels

Atomic-level engineering of two-dimensional electrocatalysts for CO2 Reduction

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Shao ◽  
Xiaodong Zhang
Keyword(s):  
Carbon Dioxide ◽  
Fossil Fuels ◽  
Co2 Reduction ◽  
Value Added ◽  
Atomic Level ◽  
Two Dimensional ◽  
Excessive Consumption

Carbon dioxide (CO2) from the excessive consumption of fossil fuels has exhibited a huge threat to the planet’s ecosystem. Electrocatalytic CO2 reduction into value-added chemicals have been regarded as a...

Electrografting Amines onto Modified Silver Nanoparticle Electrodes for Electroreduction of CO2 at Low Overpotential

2021 ◽  
Author(s):  
Heinz-Bernhard Kraatz ◽  
Maryam Abdinejad ◽  
Iranaldo Santos da Silva
Keyword(s):  
Carbon Dioxide ◽  
Silver Nanoparticle ◽  
Value Added ◽  
Efficient Manner ◽  
Low Overpotential

Reducing carbon dioxide (CO2) to value-added synthons in a selective and efficient manner remains a sizable challenge to CO2 conversion research. Although many electrocatalysts have been reported to date, those...

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