Funding for this research was provided by:
Natural Science Foundation of Gansu Province (No. 1010RJZA196)
RELATED DATA
IDENTIFIERS
COPYRIGHT AND LICENSING
: The Royal Society of Chemistry has an exclusive publication licence for this journal
OPEN ACCESS: This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0)
PEER REVIEW METHOD
: Single-blind
PUBLICATION HISTORY
: Received 13 November 2016; Accepted 15 December 2016; Version of Record published 5 January 2017