氨基酸类衍生物MOFs的制备及吸附降解有机染料研究  

Preparation of Amino Acid Derivatives MOFs and Study on Adsorption Degradation of Organic Dyes

作　　者：池立欣 Clarisse Ntampaka D. 孙中华 陈悦[1] 李田甜 张致慧[1] CHI Lixin;CLARISSE Ntampaka D.;SUN Zhonghua;CHEN Yue;LI Tiantian;ZHANG Zhihui(School of Petrochemical Engineering,Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学石油化工学院,江苏省绿色催化与技术重点实验室,常州213164

出　　处：《离子交换与吸附》2023年第6期489-500,共12页Ion Exchange and Adsorption

基　　金：国家自然科学基金(No.11775037,12175024);江苏省高等学校自然科学研究重大项目(No.21KJA530001)。

摘　　要：含不同阴离子(Cl-和HCOO-)的N-(4-吡啶甲基)-L-缬氨酸配体(HLCl和HLFor)与过渡金属盐Zn(OAc)_(2)·2H_(2)O反应合成了两种阴离子型金属有机骨架(MOFs),Zn(LCl)-MOF和Zn(LFor)-MOF,并对两种MOFs进行了表征。选取中性染料中性红(NR),阳离子染料亚甲基蓝(MB)、结晶紫(CV)、罗丹明B(RhB),阴离子染料亚甲基橙(MO)作为吸附降解对象,用所合成的氨基酸MOFs材料进行吸附和光催化降解有机染料。研究表明Zn(LCl)-MOF和Zn(LFor)-MOF对中性染料NR吸附去除率均可达95%,大大优于对阳离子型染料MB的吸附去除率(27%和29%)。光催化降解研究表明,MOFs材料对染料分子的降解效果随染料相对分子质量的减小而增大,对小分子染料MB、CV、MO和NR的降解效果比较明显。其中两种材料对MB的去除率均可达93%,对NR的去除率可达95%和96%。相对于吸附能力,两种MOFs材料对阳离子染料MB均表现出优异的光催化降解能力,骨架中配位阴离子对材料的吸附和降解的效果影响均较小。Two anionic MOFs,Zn(L_(Cl))-MOF and Zn(L_(For))-MOF,were synthesized through the reaction of N-(4-pyridylmethyl)-L-valine ligands(HL_(Cl)and HL_(For))containing different anions(Cl~-and HCOO~-,respectively)with transition metal salt Zn(OAc)_2·2H_2O,and the two MOFs were characterized.Neutral dye neutral red(NR),cationic dyes methylene blue(MB),crystal violet(CV),rhodamine B(RhB),and anionic dye methylene orange(MO)were selected as the adsorption and degradation objects,and the synthetic amino acid MOFs materials were used for the adsorption and photocatalytic degradation of organic dyes.The results show that the adsorptive removal rates of the neutral dye NR over Zn(L_(Cl))-MOF and Zn(L_(For))-MOF could reach 95%,which is significantly higher than those of cationic dye MB(27%and 29%).Photocatalytical degradation study indicated that the degradation effects of MOFs materials to dye molecules changes upon the molecular weights of dyes,leading to the significant degradation abilities on small size dyes including MB,CV,MO and NR.Among them,the removal rates of MB on two materials could reach 93%,and the values of NR are 95%and 96%,respectively.In caparison with the adsorption capacity,the degradation abilities of two MOFs to cationic dye MB are excellent,and the coordinated anions within the frameworks show slightly influences on the effects of adsorption and degradation.

关 键 词：金属-有机骨架材料 氨基酸衍生物 有机染料 光催化 降解 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X703[环境科学与工程—环境工程]