Bioinspired supramolecular fibers for mercury ion adsorption

被引：22

作者：

Wang, Yeh-Sheng ^{[2
]}

Cheng, Chih-Chia ^{[2
]}

Chen, Jem-Kun ^{[4
]}

Ko, Fu-Hsiang ^{[5
]}

Chang, Feng-Chih ^{[1
,2
,3
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Mat & Optoelect Sci, Kaohsiung 80424, Taiwan

[2] Natl Chiao Tung Univ, Inst Appl Chem, Hsinchu 30050, Taiwan

[3] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Tao Yuan 32043, Taiwan

[4] Natl Taiwan Univ Sci & Technol, Dept Mat Sci & Engn, Taipei 10607, Taiwan

[5] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30050, Taiwan

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 26期

关键词：

SELECTIVE FLUORESCENT SENSOR; AQUEOUS-SOLUTIONS; MESOPOROUS SILICA; THIOL-GROUPS; HG-II; HG(II); REMOVAL; THYMINE; NANOPARTICLES; AGGREGATION;

D O I：

10.1039/c3ta11072a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Anovel photo-cross-linkable nanofiber based on a uracil-functionalized polymer, poly[ 1-(4-vinylbenzyl uracil)] (PVBU), was prepared using the electrospinning technique. This PVBU nanofiber can be converted into a covalent network nanofiber through exposure to UV light at a wavelength of 254 nm. This PVBU nanofiber is able to distinguish and selectively remove mercury ions (Hg2+) from other metal ions in aqueous solution. The maximum Hg2+ adsorption capacity of the PVBU nanofiber is 543.9 mg g(-1), which is significantly higher than that of cyclic imide derivatives. The improved adsorption of Hg2+ allows a detection limit of less than 1 ppm, which has rarely been achieved for Hg2+ sensing. Furthermore, the PVBU fiber can be reused for 10 consecutive cycles using 1.0 M HCl treatment. This new material has significant potential for the simultaneous detection and separation of Hg2+ in environmental and industrial fields.

引用

页码：7745 / 7750

页数：6

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