Activity, selectivity and stability of the earth abundant CuO/Cu2O/Cu0 based photocatalysts towards photocatalytic CO2 reduction

2021 ◽  
pp. 131579
Author(s):  
Shahzad Ali ◽  
Abdul Razzaq ◽  
Hwapyong Kim ◽  
Su-Il In
Keyword(s):  
Co2 Reduction ◽  
The Earth ◽  
Earth Abundant

scholarly journals Transferring photocatalytic CO2 reduction mediated by Cu(N^N)(P^P)+ complexes from organic solvents into ionic liquid media

2020 ◽  
Vol 22 (14) ◽  
pp. 4541-4549
Author(s):  
Paola A. Forero-Cortés ◽  
Maximilian Marx ◽  
Nikolaos G. Moustakas ◽  
Fabian Brunner ◽  
Catherine E. Housecroft ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Organic Solvents ◽  
High Selectivity ◽  
Co2 Reduction ◽  
Carbon Dioxide Reduction ◽  
Liquid Media ◽  
The Earth ◽  
Earth Abundant ◽  
Turn Over

Photocatalytic carbon dioxide reduction utilizing metal complexes based on the earth-abundant transition metals iron and copper was transferred from organic solvents into ionic liquids with high selectivity and moderate turn-over numbers.

scholarly journals A high throughput optical method for studying compositional effects in electrocatalysts for CO2 reduction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jeremy L. Hitt ◽  
Yuguang C. Li ◽  
Songsheng Tao ◽  
Zhifei Yan ◽  
Yue Gao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
High Throughput ◽  
High Throughput Screening ◽  
Screening Method ◽  
Co2 Reduction ◽  
Fold Increase ◽  
Faradaic Efficiency ◽  
Atomic Pair Distribution Function ◽  
Earth Abundant ◽  
Ternary Catalysts

AbstractIn the problem of electrochemical CO2 reduction, the discovery of earth-abundant, efficient, and selective catalysts is essential to enabling technology that can contribute to a carbon-neutral energy cycle. In this study, we adapt an optical high throughput screening method to study multi-metallic catalysts for CO2 electroreduction. We demonstrate the utility of the method by constructing catalytic activity maps of different alloyed elements and use X-ray scattering analysis by the atomic pair distribution function (PDF) method to gain insight into the structures of the most active compositions. Among combinations of four elements (Au, Ag, Cu, Zn), Au6Ag2Cu2 and Au4Zn3Cu3 were identified as the most active compositions in their respective ternaries. These ternary electrocatalysts were more active than any binary combination, and a ca. 5-fold increase in current density at potentials of −0.4 to −0.8 V vs. RHE was obtained for the best ternary catalysts relative to Au prepared by the same method. Tafel plots of electrochemical data for CO2 reduction and hydrogen evolution indicate that the ternary catalysts, despite their higher surface area, are poorer catalysts for the hydrogen evolution reaction than pure Au. This results in high Faradaic efficiency for CO2 reduction to CO.

Hierarchical three-dimensional copper selenide nanocubes microelectrodes for improved carbon dioxide reduction reaction

2021 ◽  
Author(s):  
Rajasekaran Elakkiya ◽  
Govindhan Maduraiveeran
Keyword(s):  
Carbon Dioxide ◽  
High Performance ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Value Added ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Earth Abundant ◽  
Carbon Dioxide Co2 ◽  
Co2 Reduction Reaction

Design of high-performance and Earth-abundant electrocatalysts for electrochemical carbon dioxide (CO2) reduction reaction (CO2RR) into fuels and value-added chemicals offers an emergent pathway for environment and energy sustainable concerns. Herein,...

scholarly journals Sustainable Hydrogenation of Nitroarenes to Anilines with Highly Active In-Situ Generated Copper Nanoparticles

2020 ◽  
Author(s):  
Fatma Pelin Kinik ◽  
Tu Ngugen ◽  
Mounir Mensi ◽  
Christopher Ireland ◽  
Kyriakos Stylianou ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Hydrogenation Reaction ◽  
Hydrogen Gas ◽  
Proof Of Concept ◽  
Drug Molecules ◽  
Highly Active ◽  
The Earth ◽  
Earth Abundant ◽  
Stability Issues

<div> <div> <div> <p>Metal nanoparticles (NPs) are usually stabilized by a capping agent, a surfactant, or a support material, to maintain their integrity. However, these strategies can impact their intrinsic catalytic activity. Here, we demonstrate that the in-situ formation of copper NPs (Cu0NPs) upon the reduction of the earth-abundant Jacquesdietrichite mineral with ammonia borane (NH3BH3, AB) can provide an alternative solution for stability issues. During the formation of Cu0NPs, hydrogen gas is released from AB, and utilized for the reduction of nitroarenes to their corresponding anilines, at room temperature and under ambient pressure. After the nitroarene-to-aniline conversion is completed, regeneration of the mineral occurs upon the exposure of Cu0NPs to air. Thus, the hydrogenation reaction can be performed multiple times without the loss of the Cu0NPs’ activity. As a proof-of-concept, the hydrogenation of drug molecules “flutamide” and “nimesulide” was also performed and isolated their corresponding amino-compounds in high selectivity and yield. </p> </div> </div> </div>

scholarly journals Discovery of a ternary pseudobrookite phase in the earth-abundant Ti–Zn–O system

2016 ◽  
Vol 45 (4) ◽  
pp. 1572-1581 ◽  
Author(s):  
Nicola H. Perry ◽  
Vladan Stevanovic ◽  
Linda Y. Lim ◽  
Thomas O. Mason
Keyword(s):  
Experimental Approach ◽  
Chemical System ◽  
The Earth ◽  
System P ◽  
Earth Abundant

We apply a combined theoretical and experimental approach to the search for “missing”, stable materials within the ternary Zn–Ti–O chemical system, leading to the discovery of a new pseudobrookite phase, ZnxTi3−xo5−δ.

scholarly journals pH-Dependent Electrochemically Catalyzed Oxygen Reduction Behaviors of o-Substituted Co (III) Corroles Research Data.pdf

2020 ◽  
Author(s):  
Wei Tang ◽  
Yunyuan Qiu ◽  
Xiaonan Li ◽  
Rodah C. Soy ◽  
John Mack ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction ◽  
Co2 Reduction ◽  
Catalytic Efficiency ◽  
Molecular Structures ◽  
Earth Abundant ◽  
Fundamental Research ◽  
Ph Dependent ◽  
Macrocyclic Cavity ◽  
Electrochemical Catalysts

<p>Supporting Information for article. </p> <p>Earth-abundant first row transition metal corrole complexes have played an important role in fundamental research due to their unique molecular structures and attractive properties. In comparison to porphyrins, corroles have three inner N-H protons and are ring-contracted with a smaller macrocyclic cavity. First row transition metal corroles have been widely used as effective electrochemical catalysts for small molecule activations, such as hydrogen evolution, oxygen reduction/evolution and CO2 reduction reactions (HERs, ORRs/OERs and CO2 RRs) through homogenous and/or heterogenous prodecures. Several strategies have been used to modulate the catalytic efficiency of synthetic metallocorroles.</p>

Boosting the photocatalytic activity of graphite carbon nitride by designing novel MoS2–transition metal heterojunction cocatalysts

2019 ◽  
Vol 7 (42) ◽  
pp. 13211-13217 ◽  
Author(s):  
Kui Li ◽  
Ye-Zhan Lin ◽  
Yu Zhang ◽  
Mei-Ling Xu ◽  
Ling-Wang Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Transition Metal ◽  
Synergistic Effect ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
The Earth ◽  
Earth Abundant

MoS2–transition metal heterojunctions were adopted as cocatalysts on the earth-abundant g-C3N4 and displayed a synergistic effect on improving the photocatalytic performance.

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