Jump to main content
Jump to site search


A Novel Route to Synthesize Carbon Spheres and Carbon Nanotubes from Carbon Dioxide in a Molten Carbonates Electrolyzer

Abstract

The process of molten salt CO2 capture and electrochemical conversion provides us a new way to close present carbon cycle and mitigate global climate change by transforming greenhouse gas of CO2 into carbonaceous fuels or chemicals. In this paper, carbon spheres and carbon nanotubes that can be used as a societal resource to serve mankind are synthesized from CO2 in diverse electrolyte composites with inexpensive metallic electrodes. Carbon products subsequent to electrolysis are characterized by EDS, SEM, TEM, Raman, TGA, FTIR, BET and XRD to reveal the elementary composition, morphological and structural features. The results demonstrate that the Li-Ca-Na and Li-Ca-K carbonates electrolytes favor carbon spheres formation rather than carbon nanotubes and in particular, K2CO3 shows an enhanced interference towards carbon nanotubes growth. In contrast, Li-Ca-Ba and Li-Ba carbonate composites present an elevation in carbon nanotubes fraction. Additionally, CNTs generated from Li-K, Li-Ba and Li-Ca-Ba present a different diameter. In this way, CO2-derived carbon products of carbon spheres and carbon nanotubes could be alternatively synthesized through an appropriate regulation on electrolyte composition.

Back to tab navigation

Publication details

The article was received on 11 Aug 2017, accepted on 05 Nov 2017 and first published on 06 Nov 2017


Article type: Research Article
DOI: 10.1039/C7QI00479F
Citation: Inorg. Chem. Front., 2017, Accepted Manuscript
  •   Request permissions

    A Novel Route to Synthesize Carbon Spheres and Carbon Nanotubes from Carbon Dioxide in a Molten Carbonates Electrolyzer

    Z. Li, D. Yuan, H. Wu, W. Li and D. Gu, Inorg. Chem. Front., 2017, Accepted Manuscript , DOI: 10.1039/C7QI00479F

Search articles by author

Spotlight

Advertisements