1. School of Science, Henan Institute of Technology, Xinxiang, 453003, P. R. China
2. Department of Electronic Communication Engineering, Xinxiang University, Xinxiang, 453003, P. R. China
3. School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an, 710021, P. R. China
4. Institute of Environmental and Energy Catalysis, School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an, 710021, P. R. China
5. College of Resources and Environmental Engineering, Tianshui Normal University, Tianshui, 741001, P. R. China