Funding for this research was provided by:
Hubei Provincial Department of Education (Q20171108)
Youth science and technology backbone training program of the Wuhan University of Science and Technology (2017xz010)
Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials (WKDM201711)
Article History
Received: 27 March 2019
Accepted: 14 May 2019
First Online: 20 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
Free to read: This content has been made available to all.