scholarly journals Dynamic Changes in the Structure, Chemical State and Catalytic Selectivity of Cu Nanocubes during CO2 Electroreduction: Size and Support Effects

2018 ◽  
Vol 57 (21) ◽  
pp. 6192-6197 ◽  
Author(s):  
Philipp Grosse ◽  
Dunfeng Gao ◽  
Fabian Scholten ◽  
Ilya Sinev ◽  
Hemma Mistry ◽  
...  
Keyword(s):  
Chemical State ◽  
Dynamic Changes ◽  
Support Effects ◽  
Catalytic Selectivity ◽  
Co2 Electroreduction

scholarly journals Dynamic Changes in the Structure, Chemical State and Catalytic Selectivity of Cu Nanocubes during CO2 Electroreduction: Size and Support Effects

2018 ◽  
Vol 130 (21) ◽  
pp. 6300-6305 ◽  
Author(s):  
Philipp Grosse ◽  
Dunfeng Gao ◽  
Fabian Scholten ◽  
Ilya Sinev ◽  
Hemma Mistry ◽  
...  
Keyword(s):  
Chemical State ◽  
Dynamic Changes ◽  
Support Effects ◽  
Catalytic Selectivity ◽  
Co2 Electroreduction

scholarly journals Electrocatalytic CO 2 Reduction on CuO x Nanocubes: Tracking the Evolution of Chemical State, Geometric Structure, and Catalytic Selectivity using Operando Spectroscopy

2020 ◽  
Vol 132 (41) ◽  
pp. 18130-18139 ◽  
Author(s):  
Tim Möller ◽  
Fabian Scholten ◽  
Trung Ngo Thanh ◽  
Ilya Sinev ◽  
Janis Timoshenko ◽  
...  
Keyword(s):  
Geometric Structure ◽  
Chemical State ◽  
Operando Spectroscopy ◽  
Catalytic Selectivity

scholarly journals Insights into the carbon balance for CO2 electroreduction on Cu using gas diffusion electrode reactor designs

2020 ◽  
Vol 13 (3) ◽  
pp. 977-985 ◽  
Author(s):  
Ming Ma ◽  
Ezra L. Clark ◽  
Kasper T. Therkildsen ◽  
Sebastian Dalsgaard ◽  
Ib Chorkendorff ◽  
...  
Keyword(s):  
Carbon Balance ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
High Rate ◽  
Catalytic Selectivity ◽  
Co2 Electroreduction ◽  
Gas Products

The carbon balance during high-rate CO2 reduction in flow electrolyzers was rigorously analyzed, showing that CO2 consumption should be taken into account for evaluating catalytic selectivity of gas products.

scholarly journals Dynamic transformation of cubic copper catalysts during CO2 electroreduction and its impact on catalytic selectivity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Philipp Grosse ◽  
Aram Yoon ◽  
Clara Rettenmaier ◽  
Antonia Herzog ◽  
See Wee Chee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Copper Catalysts ◽  
Underlying Structure ◽  
Structure Property ◽  
Product Analysis ◽  
Time Resolved ◽  
Catalytic Selectivity ◽  
Structure Property Relationships ◽  
Co2 Electroreduction ◽  
The Impact

AbstractTo rationally design effective and stable catalysts for energy conversion applications, we need to understand how they transform under reaction conditions and reveal their underlying structure-property relationships. This is especially important for catalysts used in the electroreduction of carbon dioxide where product selectivity is sensitive to catalyst structure. Here, we present real-time electrochemical liquid cell transmission electron microscopy studies showing the restructuring of copper(I) oxide cubes during reaction. Fragmentation of the solid cubes, re-deposition of new nanoparticles, catalyst detachment and catalyst aggregation are observed as a function of the applied potential and time. Using cubes with different initial sizes and loading, we further correlate this dynamic morphology with the catalytic selectivity through time-resolved scanning electron microscopy measurements and product analysis. These comparative studies reveal the impact of nanoparticle re-deposition and detachment on the catalyst reactivity, and how the increased surface metal loading created by re-deposited nanoparticles can lead to enhanced C2+ selectivity and stability.

Monitoring the Chemical State of Catalysts for CO2 Electroreduction: An In Operando Study

ACS Catalysis ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 7498-7502 ◽  
Author(s):  
Abhijit Dutta ◽  
Akiyoshi Kuzume ◽  
Motiar Rahaman ◽  
Soma Vesztergom ◽  
Peter Broekmann
Keyword(s):  
Chemical State ◽  
Co2 Electroreduction ◽  
In Operando

Interface-Enhanced Catalytic Selectivity on the C2 Products of CO2 Electroreduction

ACS Catalysis ◽  
2021 ◽  
pp. 2473-2482
Author(s):  
Zhen Li ◽  
Yao Yang ◽  
Zhenglei Yin ◽  
Xing Wei ◽  
Hanqing Peng ◽  
...  
Keyword(s):  
Catalytic Selectivity ◽  
Co2 Electroreduction

scholarly journals Probing the chemical state of tin oxide NP catalysts during CO2 electroreduction: A complementary operando approach

Nano Energy ◽  
2018 ◽  
Vol 53 ◽  
pp. 828-840 ◽  
Author(s):  
Abhijit Dutta ◽  
Akiyoshi Kuzume ◽  
Veerabhadrarao Kaliginedi ◽  
Motiar Rahaman ◽  
Ilya Sinev ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Chemical State ◽  
Co2 Electroreduction

scholarly journals Author Correction: Dynamic transformations of cubic copper catalysts during CO2 electroreduction and its impact on catalytic selectivity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Philipp Grosse ◽  
Aram Yoon ◽  
Clara Rettenmaier ◽  
Antonia Herzog ◽  
See Wee Chee ◽  
...  
Keyword(s):  
Copper Catalysts ◽  
Catalytic Selectivity ◽  
Co2 Electroreduction

Ultrastructural Cytopiasmic Changes of Adrenal Cortex During Pregnancy

1969 ◽  
Vol 27 ◽  
pp. 298-299
Author(s):  
T. M. Murad ◽  
Karen Israel ◽  
Jack C. Geer
Keyword(s):  
Adrenal Gland ◽  
Steroid Hormones ◽  
Adrenal Cortex ◽  
Lipid Droplets ◽  
Plasma Cholesterol ◽  
Adrenal Steroids ◽  
Dynamic Changes ◽  
Cortical Cells ◽  
Acetyl Coenzyme A ◽  
Adrenal Cortical Cells

Adrenal steroids are normally synthesized from acetyl coenzyme A via cholesterol. Cholesterol is also shown to enter the adrenal gland and to be localized in the lipid droplets of the adrenal cortical cells. Both pregnenolone and progesterone act as intermediates in the conversion of cholesterol into steroid hormones. During pregnancy an increased level of plasma cholesterol is known to be associated with an increase of the adrenal corticoid and progesterone. The present study is designed to demonstrate whether the adrenal cortical cells show any dynamic changes during pregnancy.

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