Wee-Keat CheahYoke-Leng SimFei-Yee Yeoh2025-01-022025-01-022016-0610.1016/j.matchemphys.2016.03.007https://dspace-cris.utar.edu.my/handle/123456789/9530Amine-functionalized mesoporous silica for urea adsorptionjournal-article