1. Department of ChemistryRajshahi UniversityRajshahi6205 Bangladesh
2. Max Planck Institute of Colloid and InterfacesAm Mühlenberg Golm14476 Germany
3. Graduate School of EngineeringKobe UniversityKobe657‐8501 Japan
4. Pilot Plant and Process Development Centre, BCSIRDhaka1205 Bangladesh