1. School of Chemistry & Chemical Engineering, Yangzhou University, Jiangsu 225002, People’s Republic of China
2. Provincial Key Laboratory of Environmental Engineering & Materials, Jiangsu 225002, People’s Republic of China
3. Departamento de Física, Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela
4. Testing Center, Yangzhou University, Jiangsu 225002, People’s Republic of China