1. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia
2. Department of Nanoscience and Technology, Bharathiar University, Coimbatore, Tamilnadu 641046, India
3. Department of Chemistry, Sethupathy Government Arts College, Ramanathapuram, Tamilnadu 623502, India
4. Department of Environment and Energy Engineering, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea