1. PPPTMGB LEMIGAS, Balitbang KESDM, Jl. Ciledug Raya, Kav. 109, Cipulir, Kebayoran Lama; Jakarta 12230 Indonesia
2. Department of Chemical Engineering; Institut Teknologi Bandung, Jl. Ganesha 10; Bandung 40132 Indonesia
3. Research Center for Nanosciences and Nanotechnology; Institut Teknologi Bandung, Jl. Ganesha 10; Bandung 40132 Indonesia