Facile Treatment Tuning the Morphology of Pb with State-of-the-art Selectivity in CO2 Electroreduction to Formate

2021 ◽  
Author(s):  
Weiting Yu ◽  
Lingsha Wen ◽  
Jie Gao ◽  
Sizhuo Chen ◽  
Zhiqiao He ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
State Of The Art ◽  
Co2 Electroreduction

This study presents a facile treatment to modify the commercial irregular shaped polycrystalline Pb into well-defined octahedral Pb with unique Pb(111) facet. Efficient, selective, and stable electrochemical reduction of CO2...

scholarly journals Mechanistic routes toward C3 products in copper-catalysed CO2 electroreduction

2022 ◽  
Author(s):  
Sergio Pablo-García ◽  
Florentine L. P. Veenstra ◽  
Louisa Rui Lin Ting ◽  
Rodrigo García-Muelas ◽  
Federico Dattila ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Co2 Electroreduction

The mechanistic insights of CO2 electrochemical reduction on Cu materials up to C3 fragments are investigated by combining experiments and theory.

scholarly journals Electrochemical Reduction of CO2 to Formate on Easily Prepared Carbon-Supported Bi Nanoparticles

Molecules ◽  
2019 ◽  
Vol 24 (11) ◽  
pp. 2032 ◽  
Author(s):  
Beatriz Ávila-Bolívar ◽  
Leticia García-Cruz ◽  
Vicente Montiel ◽  
José Solla-Gullón
Keyword(s):  
Electron Microscopy ◽  
Electrochemical Reduction ◽  
Carbon Paper ◽  
Faradaic Efficiency ◽  
X Ray ◽  
Bismuth Nanoparticles ◽  
Electrode Potentials ◽  
Co2 Electroreduction ◽  
Reduction Of Co2 ◽  
Bi Nanoparticles

Herein, the electrochemical reduction of CO2 to formate on carbon-supported bismuth nanoparticles is reported. Carbon-supported Bi nanoparticles (about 10 nm in size) were synthesized using a simple, fast and scalable approach performed under room conditions. The so-prepared Bi electrocatalyst was characterized by different physicochemical techniques, including transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction and subsequently air-brushed on a carbon paper to prepare electrodes. These electrodes were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy and also by cyclic voltammetry. Finally, CO2 electroreduction electrolyses were performed at different electrode potentials for 3 h. At the optimal electrode potential (−1.6 V vs AgCl/Ag), the concentration of formate was about 77 mM with a faradaic efficiency of 93 ± 2.5%. A 100% faradaic efficiency was found at a lower potential (−1.5 V vs AgCl/Ag) with a formate concentration of about 55 mM. In terms of stability, we observed that after about 70 h (in 3 h electrolysis experiments at different potentials), the electrode deactivates due to the gradual loss of metal as shown by SEM/EDX analyses of the deactivated electrodes.

Catalysts for the Electrochemical Reduction of Carbon Dioxide to Methanol

2020 ◽  
Vol 17 (4) ◽  
Author(s):  
Qi Hang Low ◽  
Boon Siang Yeo
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Fossil Fuels ◽  
Negative Impact ◽  
Anthropogenic Activities ◽  
Renewable Electricity ◽  
Co2 Electroreduction ◽  
Carbon Dioxide Co2 ◽  
Reduction Of Co2 ◽  
Made In

Abstract Anthropogenic activities powered by the burning of fossil fuels have caused excessive emissions of carbon dioxide (CO2) to the atmosphere. This has a negative impact on our environment. One promising approach to reduce the concentration of atmospheric CO2 is to convert it to useful products. This could be achieved via the electrochemical reduction of CO2 using renewable electricity. Methanol (CH3OH), a valuable fuel and feedstock, is one of the CO2 electroreduction products. However, its formation, thus far, has been plagued by the inadequacy of functional electrocatalysts. In this review, we summarize progresses made in the development of methanol-selective electrocatalysts, which provides us with a basis to discuss the underlying challenges of electroreducing CO2 to methanol.

scholarly journals Electrochemical Reduction of Carbon Dioxide on Graphene-Based Catalysts

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 572
Author(s):  
Stefan Delgado ◽  
María del Carmen Arévalo ◽  
Elena Pastor ◽  
Gonzalo García
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Energy Production ◽  
Noble Metals ◽  
Scientific Literature ◽  
State Of The Art ◽  
Catalyst Support ◽  
Reduction Reaction ◽  
And Storage ◽  
Theoretical Results

The current environmental situation requires taking actions regarding processes for energy production, thus promoting renewable energies, which must be complemented with the development of routes to reduce pollution, such as the capture and storage of CO2. Graphene materials have been chosen for their unique properties to be used either as electrocatalyst or as catalyst support (mainly for non-noble metals) that develop adequate efficiencies for this reaction. This review focuses on comparing experimental and theoretical results of the electrochemical reduction reaction of carbon dioxide (ECO2RR) described in the scientific literature to establish a correlation between them. This work aims to establish the state of the art on the electrochemical reduction of carbon dioxide on graphene-based catalysts.

scholarly journals Optimizing the Electrochemical Reduction of CO2 to Formate: A State-of-the-Art Analysis

2020 ◽  
Vol 8 (41) ◽  
pp. 15430-15444
Author(s):  
Matthew F. Philips ◽  
Gert-Jan M. Gruter ◽  
Marc T. M. Koper ◽  
Klaas Jan P. Schouten
Keyword(s):  
Electrochemical Reduction ◽  
State Of The Art ◽  
Art Analysis ◽  
Reduction Of Co2

Elucidating the active sites for CO2 electroreduction on ligand-protected Au25 nanoclusters

2018 ◽  
Vol 8 (15) ◽  
pp. 3795-3805 ◽  
Author(s):  
Natalie Austin ◽  
Shuo Zhao ◽  
James R. McKone ◽  
Rongchao Jin ◽  
Giannis Mpourmpakis
Keyword(s):  
Electrochemical Reduction ◽  
Active Sites ◽  
Au Nanoclusters ◽  
Co2 Electroreduction ◽  
Catalytic Sites

This work reveals the mechanism of CO2 electrochemical reduction on ligand-protected Au nanoclusters and catalytic sites responsible for increased selectivity towards CO.

scholarly journals Optimization Strategies for Selective CO2 Electroreduction to Fuels

2021 ◽  
Author(s):  
Yangfang Ling ◽  
Qinglang Ma ◽  
Yifu Yu ◽  
Bin Zhang
Keyword(s):  
State Of The Art ◽  
Product Distribution ◽  
Reduction Reaction ◽  
Operating Conditions ◽  
Control Surface ◽  
Defect Engineering ◽  
Onset Potential ◽  
Regulate Product ◽  
Co2 Electroreduction ◽  
Ionic Effects

AbstractCapturing CO2 from the atmosphere and converting it into fuels are an efficient strategy to stop the deteriorating greenhouse effect and alleviate the energy crisis. Among various CO2 conversion approaches, electrocatalytic CO2 reduction reaction (CO2RR) has received extensive attention because of its mild operating conditions. However, the high onset potential, low selectivity toward multi-carbon products and poor cruising ability of CO2RR impede its development. To regulate product distribution, previous studies performed electrocatalyst modification using several universal methods, including composition manipulation, morphology control, surface modification, and defect engineering. Recent studies have revealed that the cathode and electrolytes influence the selectivity of CO2RR via pH changes and ionic effects, or by directly participating in the reduction pathway as cocatalysts. This review summarizes the state-of-the-art optimization strategies to efficiently enhance CO2RR selectivity from two main aspects, namely the cathode electrocatalyst and the electrolyte.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

A Macintosh Interface for the Cameca Camebax-Micro Electron Microprobe

1990 ◽  
Vol 48 (1) ◽  
pp. 438-439
Author(s):  
Carl E. Henderson
Keyword(s):  
Electron Microprobe ◽  
Processing Speed ◽  
Word Processing ◽  
State Of The Art ◽  
Computer Control ◽  
Third Party ◽  
Disk Storage ◽  
The Past ◽  
User Facility ◽  
Instrument Control

Over the past few years it has become apparent in our multi-user facility that the computer system and software supplied in 1985 with our CAMECA CAMEBAX-MICRO electron microprobe analyzer has the greatest potential for improvement and updating of any component of the instrument. While the standard CAMECA software running on a DEC PDP-11/23+ computer under the RSX-11M operating system can perform almost any task required of the instrument, the commands are not always intuitive and can be difficult to remember for the casual user (of which our laboratory has many). Given the widespread and growing use of other microcomputers (such as PC’s and Macintoshes) by users of the microprobe, the PDP has become the “oddball” and has also fallen behind the state-of-the-art in terms of processing speed and disk storage capabilities. Upgrade paths within products available from DEC are considered to be too expensive for the benefits received. After using a Macintosh for other tasks in the laboratory, such as instrument use and billing records, word processing, and graphics display, its unique and “friendly” user interface suggested an easier-to-use system for computer control of the electron microprobe automation. Specifically a Macintosh IIx was chosen for its capacity for third-party add-on cards used in instrument control.

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