Synergistic nanofibrous adsorbent for uranium extraction from seawater
Zhang, BW; Guo, XJ; Xie, SY; Liu, XY; Ling, CJ; Ma, HJ; Yu, M; Li, JY; Li, JY (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, CAS Ctr Innovat Adv Nucl Energy, 2019 Jialuo Rd, Shanghai 201800, Peoples R China.
2016
发表期刊RSC ADVANCES
ISSN2046-2069
卷号6期号:85页码:81995-82005
文章类型期刊论文
摘要Huge reserves of uranium (U) in seawater have been of interest to scientists and energy companies since the 1950s. However, extracting trace concentrations (3.3 ppb) of U from seawater is economically unfeasible without new, high-performance adsorbents. Here, a mat-like nanofibrous composite adsorbent containing binary coordination groups (amidoxime (AO) and carboxyl (AC(-))) in a highly porous network of nanofibers is constructed via a parallel-blend electrospinning method. Its U uptake in artificial seawater is more than double those of adsorbents containing AO or AC(-) groups alone. Density functional theory (DFT) calculations reveal that this synergistic effect is because the AC(-) group promotes both the U 5f/6d orbital contribution to U-AO bonding and the dissociation of uranyl tricarbonate ions in seawater. In a continuous flow-through experiment with simulated seawater, the nanofibrous adsorbent achieves an adsorption capacity up to 2.86 mg U g(ads)(-1) in 30 d but without saturation, indicating a high efficiency for U extraction.
DOI10.1039/c6ra18785d
收录类别SCI
语种英语
WOS记录号WOS:000382776000072
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文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26646
专题中科院上海应用物理研究所2011-2018年
通讯作者Zhang, BW; Li, JY (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, CAS Ctr Innovat Adv Nucl Energy, 2019 Jialuo Rd, Shanghai 201800, Peoples R China.
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Zhang, BW,Guo, XJ,Xie, SY,et al. Synergistic nanofibrous adsorbent for uranium extraction from seawater[J]. RSC ADVANCES,2016,6(85):81995-82005.
APA Zhang, BW.,Guo, XJ.,Xie, SY.,Liu, XY.,Ling, CJ.,...&Li, JY .(2016).Synergistic nanofibrous adsorbent for uranium extraction from seawater.RSC ADVANCES,6(85),81995-82005.
MLA Zhang, BW,et al."Synergistic nanofibrous adsorbent for uranium extraction from seawater".RSC ADVANCES 6.85(2016):81995-82005.
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