Year-end Sale % OFF 
Abstract
SummaryCu metal nanostructures have attracted wide interest of study as catalysts for CO2 reduction reaction and other applications. Controlling the structure and morphology of Cu nanostructures during synthesis is crucial for achieving desired properties. Here, we studied temperature effects on electrochemical deposition of Cu nanoparticles. We found the size, nucleation density, and crystallinity of Cu nanoparticles are strongly influenced by low temperature processing. The electrodeposition at low temperature (−20°C) results in clusters of assembled small Cu nanoparticles, which is distinctly different from the large individual highly crystalline Cu nanoparticles obtained from the room temperature process. The differences in Cu nanoparticle morphology and crystallinity are attributed to the variations in reduction reaction rate and surface diffusion. The limitation of the reaction rate promotes multiple nuclei, and low surface diffusion induces poor crystallinity. This study deepens our understanding of low-temperature effects on electrochemical processes assisting the design of diverse hierarchical catalytic materials.
Highlights
Copper-based materials have emerged as exciting catalysts for electrochemical carbon dioxide reduction reactions (CO2RR), which converts CO2 into renewable fuels and feedstock (Birdja et al, 2019; Choi et al, 2020; Kim and Palmore, 2020; Nitopi et al, 2019; Ross et al, 2019)
Nucleation density, and crystallinity of Cu nanoparticles are strongly influenced by low temperature processing
We found that sub-zero temperature impacts the crystallinity and morphology of the Cu nanoparticles
Summary
Copper-based materials have emerged as exciting catalysts for electrochemical carbon dioxide reduction reactions (CO2RR), which converts CO2 into renewable fuels and feedstock (Birdja et al, 2019; Choi et al, 2020; Kim and Palmore, 2020; Nitopi et al, 2019; Ross et al, 2019). Understanding and controlling of Cu nanomaterials formation during synthesis is essential in order to optimize their catalytic performance. There are many factors that may affect the nucleation and growth of nanocrystals, and result in diverse structure and morphology of the final products (Day et al, 2007). There have been reports on temperature impacts on electrodeposition (Qiao et al, 2013; Yan et al, 2019), it is not well understood how low temperature affects the nucleation and growth of Cu nanoparticles. This may arise from two main reasons. It is challenging to characterize the products because they may change after being removed from the low temperature environment
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
