1. Department of Chemistry, Faculty of Mathematics and Natural Sciences of, Andalas University, Indonesia
2. Department of Biology, Faculty of Mathematics and Natural Sciences of, Andalas University, Indonesia
3. Department of Chemistry Education, Faculty of Teacher Training and Education Raja, Ali Haji Maritime University, Dompak, Tanjungpinang, Indonesia
4. Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia
5. Advanced Materials Research Center, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia