On the basis of a carbon nanotube intramolecular junction and a C 60, a molecular sieve for H 2 is proposed. The small interspace formed between C 60 and the junction provides a size changeable nanochannel for the permselectivity of H 2 while blocking Ne and Ar. The sieving mechanism is discussed in terms of soft repulsion of H 2 and the size of the nanochannel.
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Chen et al. (2011) studied this question.
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