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- Title
Green and Sustainable Manufacture of Ultrapure Engineered Nanomaterials.
- Authors
Ortiz de Zárate, David; García-Meca, Carlos; Pinilla-Cienfuegos, Elena; Ayúcar, José A.; Griol, Amadeu; Bellières, Laurent; Hontañón, Esther; Kruis, Frank E.; Martí, Javier
- Abstract
Nanomaterials with very specific features (purity, colloidal stability, composition, size, shape, location...) are commonly requested by cutting-edge technologic applications, and hence a sustainable process for the mass-production of tunable/engineered nanomaterials would be desirable. Despite this, tuning nano-scale features when scaling-up the production of nanoparticles/nanomaterials has been considered the main technological barrier for the development of nanotechnology. Aimed at overcoming these challenging frontier, a new gas-phase reactor design providing a shorter residence time, and thus a faster quenching of nanoclusters growth, is proposed for the green, sustainable, versatile, cost-effective, and scalable manufacture of ultrapure engineered nanomaterials (ranging from nanoclusters and nanoalloys to engineered nanostructures) with a tunable degree of agglomeration, composition, size, shape, and location. This method enables: (1) more homogeneous, non-agglomerated ultrapure Au-Ag nanoalloys under 10 nm; (2) 3-nm non-agglomerated ultrapure Au nanoclusters with lower gas flow rates; (3) shape-controlled Ag NPs; and (4) stable Au and Ag engineered nanostructures: nanodisks, nanocrosses, and 3D nanopillars. In conclusion, this new approach paves the way for the green and sustainable mass-production of ultrapure engineered nanomaterials.
- Subjects
NANOSTRUCTURED materials; DNA nanotechnology; GAS flow; COLLOIDAL stability; MANUFACTURING processes; NANOSTRUCTURES
- Publication
Nanomaterials (2079-4991), 2020, Vol 10, Issue 3, p466
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano10030466