1. College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P R China
2. Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China
3. College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, P. R. China
4. School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, P. R. China
5. Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, P. R. China