1. National Institute for Materials Science (NIMS) and International Center for Materials Nanoarchitectonics (MANA), Namiki 1, Tsukuba, Ibaraki 3050044, Japan
2. Research
Institute of Unconventional Petroleum and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, P. R. China
3. Key
Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Beijing 100044, P. R. China
4. National University of Science and Technology “MISiS”, Leninsky Prospect 4, Moscow 119049, Russian Federation
5. School
of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P. R. China
6. Hebei Key Laboratory of Boron Nitride Micro- and Nano-Materials, Tianjin 300130, P. R. China