Insight into the adsorption behavior and mechanism of trace impurities from H_(2)O_(2) solution on functionalized zirconia by tuning the structure of amino groups  

作　　者：Yu Meng Yitong Wang Guozhu Li Guozhu Liu Li Wang 

机构地区：[1]Key Laboratory for Green Chemical Technology of Ministry Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China [2]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第5期83-94,共12页化学科学与工程前沿（英文版）

基　　金：This work was supported by the State Key Laboratory of Safety and Control for Chemicals(10010104-19-ZC0613-0180).

摘　　要：Primary,secondary and tertiary amino-functionalized zirconia(ZrO_(2)-NH_(2),ZrO_(2)-NH and ZrO_(2)-N)was synthesized by the postgrafting method for the adsorption removal of typical metallic ions,phosphate and total oxidizable carbon from a real H_(2)O_(2) solution.ZrO_(2)-NH_(2),ZrO_(2)-NH and ZrO_(2)-N exhibited similar pore sizes and sequentially increased zeta potentials.The adsorption results of single and binary simulated solutions showed that the removal efficiency increased in the order of Fe^(3+)>Al^(3+)>Ca^(2+)>Na^(+).There is competitive adsorption between metallic ions,and Fe^(3+) has an advantage over the other metals,with a removal efficiency of 90.7%.The coexisting phosphate could promote the adsorption of metallic ions,while total oxidizable carbon had no effect on adsorption.The adsorption results of the real H_(2)O_(2)solution showed that ZrO_(2)-NH_(2) exhibited the best adsorption affinity for metallic ions,as did phosphate and total oxidizable carbon,with a total adsorption capacity of 120.9 mg·g_(-1).Density functional theory calculations revealed that the adsorption process of metallic ions involves electron transfer from N atoms to metals and the formation of N-metal bonds.

关 键 词：adsorption metallic ion PHOSPHATE total oxidizable carbon ZIRCONIA H_(2)O_(2) 

分 类 号：O64[理学—物理化学]