1. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
2. Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
3. Department of Chemistry, Faculty of Science and Engineering, University of Manchester, Manchester M13 9PL, U.K.
4. Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand
5. Research Laboratory of Pollution Treatment and Environmental Materials, Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand