1. Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Vietnam
2. NTT Institute of Hi-Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
3. Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
4. Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17 Listopadu 12, CZ-77146 Olomouc, Czech Republic