1. Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Resources, Environment and Materials. Guangxi University, Nanning 530004, China
2. College of Engineering, Department of Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK
3. Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne NE1 8ST, UK