[1] Univ Putra Malaysia, Dept Chem, Fac Sci, Upm Serdang 43400, Selangor, Malaysia
[2] Univ Putra Malaysia, Ctr Fdn Studies Agr Sci, Upm Serdang 43400, Selangor, Malaysia
[3] Univ Putra Malaysia, Dept Chem & Environm Engn, Fac Engn, Upm Serdang 43400, Selangor, Malaysia
[4] Univ Putra Malaysia, Inst Adv Technol, Upm Serdang 43400, Selangor, Malaysia
[5] Univ Teknol MARA, Inst Sci, Ctr Nanomat Res, Shah Alam 40450, Selangor, Malaysia