Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 7, Pages 2275-2282Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta14587e
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Funding
- Australian Research Council (ARC) [DP120104334]
- Monash University
- UNSW
- Melbourne Centre for Nanofabrication
- RMIT University
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We report the morphogenesis and self-assembly of bismutite nanocrystals with fully tunable morphologies from square plates, octagonal sheets, and round disks into three-dimensional hierarchical nanostructures. The results show that the nucleation, growth and self-assembly of bismutite nanocrystals strongly depend on the synergistic effect between hydroxide and citrate ions. The three-dimensional hierarchical nanostructures are formed through an oriented-attachment of bismutite nanocrystals along the < 001 > directions. The bismutite hierarchical nanostructures can be utilized for efficient and selective adsorption and separation. A novel surface-enhanced Raman spectroscopy platform based on a bismutite/gold nanoparticles core-shell structure has been developed for ultrasensitive detection of aromatic molecules with a detection limit down to 1 nM.
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