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1. A novel ion-imprinted amidoxime-functionalized UHMWPE fiber based on radiation-induced crosslinking for selective adsorption of uranium

Author:
Li, Qingnuan,   et al.   ; Ao, Junxuan; Zhang, Hongjun; Xu, Xiao; Yao, Fujia; Ma, Lin; Zhang, Lan; Ye, Bangjiao; Xu, Lu; Ma, Hongjuan;     Show all 10 Authors
Source:
RSC advances 2019 v.9 no.49 pp. 28588-28597
ISSN:
2046-2069
Subject:
adsorbents; adsorption; carbonates; cross-linking reagents; crosslinking; electrons; metal ions; molecular weight; polyethylene; scanning electron microscopy; seawater; spectroscopy; uranium; uranyl ions
Abstract:
... A novel uranium-imprinted adsorbent (AO-Imp fiber) was prepared by radiation-induced crosslinking of amidoxime-functionalized ultra-high molecular weight polyethylene fiber (AO fiber). The porous structure was characterized by scanning electron microscopy (SEM) and positron annihilation lifetime (PAL) spectroscopy after ion imprinting. This ion-imprinted fiber exhibited enhanced adsorption selecti ...
DOI:
10.1039/c9ra05440e

2. Adsorption behavior of thorium on N,N,N′,N′-tetraoctyldiglycolamide (TODGA) impregnated graphene aerogel

Author:
Li, Qingnuan,   et al.   ; Chen, Mumei; Li, Zheng; Geng, Yiyun; Zhao, Haogui; He, Shuhua; Zhang, Lan;     Show all 7 Authors
Source:
Talanta 2018 v.181 pp. 311-317
ISSN:
0039-9140
Subject:
adsorbents; adsorption; aerogels; aqueous solutions; graphene; hydrophobicity; nitric acid; porosity; solvents; surface area; thorium
Abstract:
... As a kind of three-dimensional graphene architecture material with superhydrophobic, low density, high specific surface area and porosity, graphene aerogel (GA) can be used to immobilize extractant to constitute the solvent impregnated adsorbent. In this paper, the N,N,N′,N′-tetraoctyldiglycolamide impregnated graphene aerogel (GA-TODGA) was prepared to remove the thorium from aqueous solution. It ...
DOI:
10.1016/j.talanta.2018.01.020

3. The extraction of uranium using graphene aerogel loading organic solution

Author:
Li, Qingnuan,   et al.   ; Chen, Mumei; Li, Zheng; Li, Jihao; Li, Jingye; Zhang, Lan;     Show all 6 Authors
Source:
Talanta 2017 v.166 pp. 284-291
ISSN:
0039-9140
Subject:
absorption; adsorption; aqueous solutions; graphene; graphene oxide; nitric acid; organic wastes; phosphates; skeleton; solvents; uranium
Abstract:
... A new approach for uranium extraction employing graphene aerogel (GA) as a skeleton loading organic solution (GA-LOS) is proposed and investigated. Firstly, the GA with super-hydrophobicity and high organic solution absorption capacity was fabricated by one-step reduction and self-assembly of graphene oxide with ethylenediamine. By adsorbing Tri-n-butyl phosphate (TBP)/n-dodecane solution to prepa ...
DOI:
10.1016/j.talanta.2017.01.070

4. Systematic Study in Mammalian Cells Showing No Adverse Response to Tetrahedral DNA Nanostructure

Author:
Li, Qingnuan,   et al.   ; Xia, Kai; Kong, Huating; Cui, Yunzhi; Ren, Ning; Ma, Jifei; Cui, Rongrong; Zhang, Yu; Shi, Jiye; Li, Qian; Lv, Min; Sun, Yanhong; Wang, Lihua; Li, Jiang; Zhu, Ying;     Show all 15 Authors
Source:
ACS applied materials & interfaces 2018 v.10 no.18 pp. 15442-15448
ISSN:
1944-8252
Subject:
DNA; biocompatibility; cell division; cell lines; drugs; epithelial cells; lysosomes; macrophages; mammals; medicine; models; nanocarriers; neoplasm cells
Abstract:
... The advent of DNA technology has demonstrated great potential in a wide range of applications, especially in the field of biology and biomedicine. However, current understanding of the toxicological effects and cellular responses of DNA nanostructures remains to be improved. Here, we chose tetrahedral DNA nanostructures (TDNs), a type of nanocarriers for delivering molecular drugs, as a model for ...
DOI:
10.1021/acsami.8b02626

5. Synthesis and characterization of fluorine‐containing PAA‐b‐PTPFCBPMA amphiphilic block copolymer Part A Polymer chemistry

Author:
Li, Qingnuan,   et al.   ; Li, Yongjun; Zhang, Sen; Liu, Hao; Li, Wenxin; Huang, Xiaoyu;     Show all 6 Authors
Source:
Journal of polymer science 2010 v.48 no.23 pp. 5419-5429
ISSN:
0887-624X
Subject:
acidolysis; acrylic acid; composite polymers; fluorescence emission spectroscopy; hydrophilicity; hydrophobicity; light scattering; micelles; molecular weight; polyacrylic acid; polymerization; transmission electron microscopy
Abstract:
... A series of perfluorocyclobutyl (PFCB) aryl ether‐based amphiphilic diblock copolymers containing hydrophilic poly(acrylic acid) (PAA) and fluorophilic poly(p‐(2‐(p‐tolyloxy)perfluorocyclobutoxy)phenyl methacrylate) segments were synthesized via successive atom transfer radical polymerization (ATRP). 2‐MBP‐initiated and CuBr/N,N,N′,N′,N″‐pentamethyldiethylenetriamine‐catalyzed ATRP homopolymerizat ...
DOI:
10.1002/pola.24347