1. School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and, Functionalization for Inorganic Material Shaanxi University of Science & Technology, Xi’an, Shaanxi710021, P. R. China
2. Guangzhou Special Pressure Equipment Inspection and Research Institute National Graphene Product Quality Supervision and Inspection Center, Guangzhou, Guangdong510700, P. R. China