期刊
NANO LETTERS
卷 10, 期 10, 页码 3904-3908出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl101602z
关键词
Porous nanocrystalline silicon membrane; rapid thermal carbonization; nanopores; surface functionalization
类别
资金
- National Institutes of Health [R2 I EB006149, R2 I EB007480]
- NYSTAR [TTIP CO20040]
- ARO [DAAD I 9-03-1-0267]
- National Science Foundation [DMR0722653, ECCS 0707795]
Rapid thermal carbonization in a dilute acetylene (C-2-H-2) atmosphere has been used to chemically modify and precisely tune the pore size of ultrachin porous nanocrystalline silicon (pnc-Si) The magnitude of size reduction was controlled by varying the process temperature and time Under certain conditions, the carbon coating displayed atomic ordering indicative of graphene layer formation conformal to the pore walls Initial experiments show that carbonized membranes follow theoretical predictions for hydraulic permeability and retain the precise separation capabilities of untreated membranes
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