Enhancement of Activity of Copper Sites Toward Electroreduction of Carbon Dioxide through Hierarchical Deposition of Metal Oxide Cocatalysts

2021 ◽  
Vol 104 (10) ◽  
pp. 23-35
Author(s):  
Iwona Rutkowska ◽  
Anna Chmielnicka ◽  
Paulina Krakówka ◽  
Kamil Czarniecki ◽  
Pawel J. Kulesza
2021 ◽  
Vol MA2021-02 (43) ◽  
pp. 1316-1316
Author(s):  
Iwona Rutkowska ◽  
Anna Chmielnicka ◽  
Paulina Krakówka ◽  
Kamil Czarniecki ◽  
Pawel J. Kulesza

2021 ◽  
Vol 22 (1) ◽  
pp. 132-140
Author(s):  
Kannan Karthik ◽  
Devi Radhika ◽  
D. Gnanasangeetha ◽  
K. Gurushankar ◽  
Md Enamul Hoque

Carbon dioxide conversion to chemicals and fuels based on two-dimensional based hybrid materials will present a thorough discussion of the physics, chemistry, and electrochemical science behind the new and important area of materials science, energy, and environmental sustainability. The tremendous opportunities for two-dimensional based hybrid materials in the photocatalytic carbon dioxide conversion field come up from their huge number of applications. In the carbon dioxide conversion field, nanostructured metal oxide with a two-dimensional material composite system must meet assured design and functional criteria, as well as electrical and mechanical properties. The whole content of the proposed review is anticipated to build on what has been learned in elementary courses about synthesizing two-dimensional nanomaterials, metal oxide with composites, carbon dioxide conversion requirements, uses of two-dimensional materials with nanocomposites in carbon dioxide conversion as well as fuels and the major mechanisms involved during each application. The impact of hybrid materials and synergistic composite mixtures which are used extensively or show promising outcomes in the photocatalytic carbon dioxide conversion field will also be discussed.


2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuhang Li ◽  
Aoni Xu ◽  
Yanwei Lum ◽  
Xue Wang ◽  
Sung-Fu Hung ◽  
...  

AbstractElectroreduction uses renewable energy to upgrade carbon dioxide to value-added chemicals and fuels. Renewable methane synthesized using such a route stands to be readily deployed using existing infrastructure for the distribution and utilization of natural gas. Here we design a suite of ligand-stabilized metal oxide clusters and find that these modulate carbon dioxide reduction pathways on a copper catalyst, enabling thereby a record activity for methane electroproduction. Density functional theory calculations show adsorbed hydrogen donation from clusters to copper active sites for the *CO hydrogenation pathway towards *CHO. We promote this effect via control over cluster size and composition and demonstrate the effect on metal oxides including cobalt(II), molybdenum(VI), tungsten(VI), nickel(II) and palladium(II) oxides. We report a carbon dioxide-to-methane faradaic efficiency of 60% at a partial current density to methane of 135 milliampere per square centimetre. We showcase operation over 18 h that retains a faradaic efficiency exceeding 55%.


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