CTAB-assisted fabrication of hierarchical flower-like magnesium oxide adsorbent for enhanced removal performance towards phosphate  

作　　者：Saeed Ahmed 

机构地区：[1]State Key Laboratory of Chemical Resource Engineering,College of Chemistry,Beijing University of Chemical Technology,Beijing 100029,China [2]Department of Chemistry,The University of Lahore,Lahore 54590,Pakistan [3]Department of Chemistry,University of Chakwal,Pakistan

出　　处：《Journal of Magnesium and Alloys》2023年第9期3231-3240,共10页镁合金学报（英文）

摘　　要：In this work, a series of hierarchical flower-like magnesium oxide(MgO) adsorbents were successfully fabricated in a cetyltrimethylammonium bromide(CTAB) assisted solvothermal route using hexamethylenetetramine(HMTA) as a precipitating agent. Effects of CTAB feeding amount on the structure, morphology, pore structure, and corresponding adsorption behavior were investigated. The hierarchical gardenias flower-like MgO demonstrated a surface area of 336.54 m^(2)·g^(-1) at a minimum ratio of the CTAB/Mg^(2+)was 0.02 in the reaction system. The hierarchical MgO phosphate removal capacity was 348.32 mg·g^(-1), which followed the pseudo-second-order and Freundlich isotherm model obtained from the large surface area and appropriate pore size. The value of n also suggests the feasible nature of phosphate adsorption under the examined conditions. Indeed, this CTAB assisted solvothermal method can provide a new understanding to tune the desired properties of a material by merely adjusting the reaction parameters of MgO.

关 键 词：Adsorption CTAB-assisted Magnesium oxide Phosphate removal SOLVOTHERMAL 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]