文献类型：期刊文献

英文题名：Construction of Core-Shell MOFs@COF Hybrids as a Platform for the Removal of UO22+ and Eu3+ Ions from Solution

作者：Zhong, Xin[1];Liu, Yuxin[1];Liang, Wen[1];Zhu, Yuling[1];Hu, Baowei[1]

机构：[1]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China

年份：2021

卷号：13

期号：11

起止页码：13883

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：SCI-EXPANDED(收录号：WOS:000634759500128)、、WOS

基金：Financial support from the Research Fund Program of the National Natural Science Foundation of China (No. 22076124), the Natural Science Foundation of Zhejiang Province (GF21C030001), and the Key Research Program of Shaoxing University (2019LG1003) is acknowledged.

语种：英文

外文关键词：MOF; COFs; NH2-MIL-125(Ti)@TpPa-1; UO22+; Eu3+; adsorption

外文摘要：The binary nanocomposites of metal/covalent-organic frameworks (NH2-MIL-125(Ti) @TpPa-1) were constructed by solvothermal method, which was developed as a multifunctional platform with adsorption and photocatalysis for radionuclides removal. The batch experiments and physicochemical property (FT-IR, XRD, SEM, TEM, XPS, etc.) corroborated: (i) core-shell NH2-MIL-125(Ti)@TpPa-1 had a more stable, multilayer pore structure and abundant active functional groups; (ii) NH2-MIL-125(Ti)@TpPa-1 had fast a removal rate, as well as a high adsorption capacity of 536.73 mg (UO22+)/g and 593.97 mg (Eu3+)/g; (iii) the pseudo-second-order and Langmuir model provided a more reasonable description, indicating the immobilization process was endothermic, spontaneous chemisorption; (iv) the adsorption mechanism was chelation and electrostatic attraction, ascribed to the nitrogen/oxygen-containing functional groups. These results illustrated that NH2-MIL-125(Ti)@TpPa-1 was a prospective adsorbent for the remediation polluted by radionuclides. In addition, the research provided the theoretical basis for further investigation on the UO22+(VI) photoreduction.