1. Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
2. Department of Chemistry, St. Mary’s College, Sulthan Bathery, Wayanad, Kerala 673592, India
3. Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai, Tamil Nadu 600086, India