1. Department of Environmental Engineering; Wuchang University of Technology; Wuhan P. R. China
2. Department of chemistry; Xixi Campus; Zhejiang University; Hangzhou P. R. China
3. Higher Education Department; Punjab Lahore Pakistan
4. Institute of Chemistry; University of the Punjab; Lahore Pakistan
5. Department of Applied Chemistry; Zhengzhou University of Light Industry; Zhengzhou P. R. China