Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 9, Issue 1, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2020.104736
Keywords
Carbon nanotubes; Green synthesis; Natural resources; Water-energy-food nexus
Categories
Funding
- University of the Witwatersrand, South Africa
- SabiNano (Pty) Ltd
- South African-based Nanotechnology company
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Carbon nanotubes are valuable materials with excellent physicochemical properties, making them useful for innovative technologies and materials. Despite high costs, sustainable synthesis methods are crucial for addressing application challenges.
Carbon nanotubes are valuable materials that possess excellent physicochemical properties such as high electrical conductivity, thermal stability, mechanical strength, aspect ratio and surface area. These unique properties of CNTs make it possible to develop innovative technologies and materials that can be used in various applications such as agriculture (food), energy and water industries. Regardless of the high demand of CNTs, their cost remains the major problem due to their synthesis procedures that are high temperature dependent and require high capital costs to set-up. CNT costs only become cheaper when bought in large volumes e.g., tonnes. This paper reviews some of the greener methods used for the sustainable synthesis of CNTs in order to address the water-energy-food nexus. It also reports the challenges on green production processes and application of these nanomaterials. The intricate relationship between these resources (water, energy and food) requires a sustain ably integrated approach in ensuring water and food security as well as sustainable energy production. CNTs are advanced materials with the capability of solving these challenges and their application in the water, energy and food industry is reviewed.
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