فهرس المقالات Full factorial experimental design حرية الوصول المقاله صفحة الملخص نص كامل 1 - The removal of Hexavalent chromium; (Cr (VI)) by ZnO/LECA as a nano photocatalyst using full factorial experimental design Aref Shokri Safoora Karimi 10.22034/jna.2021.1906290.1223 حرية الوصول المقاله صفحة الملخص نص كامل 2 - Preparation of ZnO nanocatalyst supported on todorokite and photocatalytic efficiency in the reduction of chromium (VI) pollutant from aqueous solution Maryam Sabonian Kazem Mahanpoor