English
español
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10261/218419
Share/Impact:
Statistics |
![]() ![]() ![]() |
|
|
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |||
|
Title: | Ordered Mesoporous Carbon as a Support of Pd Catalysts for CO2 Electrochemical Reduction |
Authors: | Pérez Rodríguez, Sara; Pastor Tejera, Elena; Lázaro Elorri, María Jesús |
Keywords: | Hard templating Silica Ordered mesoporous carbons CO2 electroreduction Palladium |
Issue Date: | 2020 |
Publisher: | Multidisciplinary Digital Publishing Institute |
Citation: | Catalysts 10(8): 912 (2020) |
Abstract: | Ordered mesoporous carbons (OMCs) have been used as catalyst supports of Pd nanoparticles for the electrochemical reduction of CO2 in 0.1 M KHCO3. OMC with tunable porosity and morphology were obtained by the hard-template approach using synthesized SBA-15 templates. SBA-15 materials were prepared using a mass ratio of the silica precursor (TEOS) and the surfactant (P123) of 2 or 5. After removing silica particles by a purification treatment with NaOH-ethanol or HF, different OMCs were obtained, with a developed porosity (up to 1050 m2 g−1) and ordered 2D hexagonal mesostructure (p6 mm). An increase in the TEOS/P123 ratio as well as the treatment with HF resulted in a decrease in the structural ordering of the materials. Pd nanoparticles with an average size of around 3 nm were deposited on the OMC. However, larger nanoparticles were also observed, especially for the materials obtained using a mass ratio TEOS/P123 of 5. Despite these differences, electrochemical experiments showed that CO2 was successfully reduced to other species (mainly COad) for all Pd/OMC electrocatalysts. These reduced species were adsorbed on Pd active sites, inhibiting the hydrogen evolution reaction |
Description: | © 2020 by the authors. |
Publisher version (URL): | https://doi.org/10.3390/catal10080912 |
URI: | http://hdl.handle.net/10261/218419 |
DOI: | http://dx.doi.org/10.3390/catal10080912 |
E-ISSN: | 2073-4344 |
Appears in Collections: | (ICB) Artículos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Ordered_Perez_Art2020.pdf | 3,68 MB | Adobe PDF | ![]() View/Open |
Show full item record
Review this work
Review this work
WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.