Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162364
Title: Carbon nanosheet-carbon nanocage encapsulated Cu composite from chemical vapor deposition of real-world plastic waste for tailored CO₂ conversion to various products
Authors: Chen, Wen Qian
Fu, Xiaoxu
Chan, Wei Ping
Veksha, Andrei
Lisak, Grzegorz
Keywords: Engineering::Environmental engineering
Issue Date: 2021
Source: Chen, W. Q., Fu, X., Chan, W. P., Veksha, A. & Lisak, G. (2021). Carbon nanosheet-carbon nanocage encapsulated Cu composite from chemical vapor deposition of real-world plastic waste for tailored CO₂ conversion to various products. Applied Materials Today, 25, 101207-. https://dx.doi.org/10.1016/j.apmt.2021.101207
Journal: Applied Materials Today
Abstract: Carbon nanosheet supported Cu (Cu/CNS) is an exemplary electrocatalyst for electrochemical CO2 reduction reaction (CO2RR). The Cu/CNS electrocatalysts however suffer from agglomeration of dispersed Cu nanoparticles and restacking of CNS causing degradation of electrocatalytic activity. Here, a facile one-step method is proposed for manufacturing tailor-made Cu/CNS (e.g., where Cu particle size is stabilized by encapsulation into carbon nanocages (CNC) fixed to a porous and conductive CNS). The electrocatalysts were prepared via catalytic chemical vapor deposition over Cu loaded CaO (Cu/CaO) catalysts from recycled real-world plastic waste. The formation of CNC could help prevent restacking of CNS with specific surface area of around 200–400 m2 g −1 and maintain good dispersion of Cu nanoparticles. The CO2RR performance (including selectivity and current density) of Cu/CNS was conveniently controlled by the Cu/CaO preparation methods. Compared to Cu/CaO prepared via impregnation or with ethylene glycol, Cu/CaO synthesized via urea-assisted method catalyzed formation of Cu/CNS with improved CO selectivity at lower overpotential (maximum CO Faradaic efficiency was 82.1% at -0.76 V versus reversible hydrogen electrode), higher current density, and suppressed hydrocarbon selectivity owning to the electrocatalyst highest porosity and smallest Cu nanoparticles over CNS.
URI: https://hdl.handle.net/10356/162364
ISSN: 2352-9407
DOI: 10.1016/j.apmt.2021.101207
Rights: © 2021 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
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