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Electrospun hydrogen manganese oxide nanofibers as effective adsorbents for Li+ recovery from seawater

Title
Electrospun hydrogen manganese oxide nanofibers as effective adsorbents for Li+ recovery from seawater
Author
김현중
Keywords
Lithium ion-sieve; H+-exchanged manganese oxide nanofibers; Li+adsorption; Li+recovery; Seawater
Issue Date
2020-01
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v. 81, page. 115-123
Abstract
Highly porous hydrogen manganese oxide (HMO) nanofibers were fabricated by combining electrospinning, calcination, and ion exchanges, and their lithium (Li) recovery performance was systematically compared to other adsorbent types (i.e., nanoparticles and porous microbeads with equivalent properties). In seawater, the HMO nanofibers exhibited an excellent Li+ adsorption capacity (18.8 mg/g) with greater Li+ selectivity over other adsorbents. These might be attributed to the high number of macropores in the nanofiber, which facilitated the inward diffusion of Li+ and enhanced the accessibility of activated sites. Moreover, the Li+ recovery efficiency of the nanofibers remained approximately 95% after 20 recovery cycles.
URI
https://www.sciencedirect.com/science/article/pii/S1226086X18311997?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/165669
ISSN
1226-086X; 1876-794X
DOI
10.1016/j.jiec.2019.08.061
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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