1. Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang 25131, Indonesia
2. Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjong Malim 35900, Perak, Malaysia
3. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang 25131, Indonesia
4. Department of Chemistry Education, Faculty of Mathematics and Natural Science, Yogyakarta State University, Yogyakarta 55281, Indonesia
5. Center for Materials Technology, Agency for the Assessment and Application of Technology, Puspiptek Building #224, South Tangerang, Banten 15314, Indonesia
6. Department of Academic Affairs, North Borneo University College, Wisma Angkatan Hebat, 1 Borneo, Jalan Sulaman, Kota Kinabalu 88400, Sabah, Malaysia