1. Key Laboratory of
Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
2. College of Materials
Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
3. Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States