The adsorption and separation of tungsten and molybdenum by chitosan and chitosan-D301: Experiments and DFT theoretical calculation - Details

Author：

Chen, N. (Chen, N..) | Ma, L. (Ma, L..) | Xi, X. (Xi, X..) | Nie, Z. (Nie, Z..)

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EI Scopus SCIE

Abstract：

The　adsorption　and　separation　of　tungsten　and　molybdenum　are　important　for　efficient　recycling　of　W-Mo　resources,　which　requires　green　and　efficient　adsorbents.　In　this　paper,　Chitosan　(CS)-D301　material　was　obtained　by　impregnation　method　and　was　applied　to　adsorb　and　separate　W　and　Mo　in　solutions.　The　adsorption　optimization　results　indicated　that　W　was　adsorbed　by　CS-D301,　the　separation　factor　of　W/Mo　increased　to　26.45　compared　with　that　of　CS　21.34.　The　desorption　efficiency　was　still　above　94　%　after　five　adsorption–desorption　cycles.　FT-IR,　XPS　and　DFT　theoretical　calculations　indicated　that　the　surface　group　N+-R　of　CS-D301　showed　more　affinity　for　W,　making　it　easier　to　selectively　adsorb　W　over　Mo　than　CS　only.　N　was　the　surface-active　adsorption　site,　and　the　adsorption　process　belonged　to　chemical　adsorption　with　an　adsorption　energy　of　Eads　=　−957.64　kcal/mol.　CS-D301　was　expected　to　become　green　adsorbent　for　efficient　separation　of　W　and　Mo　to　support　resource　recovery,　protection　and　sustainable　development.　©　2024

Keyword：

Chitosan Tungsten D301resin DFT Adsorption

Author Community：

[ 1 ] [Chen N.]Collaborative Innovation Center of Capital Resource-Recycling Material Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Ma L.]Collaborative Innovation Center of Capital Resource-Recycling Material Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Ma L.]National Engineering Laboratory for Industrial Big-data Application Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Xi X.]Collaborative Innovation Center of Capital Resource-Recycling Material Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Xi X.]Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Nie Z.]Collaborative Innovation Center of Capital Resource-Recycling Material Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 7 ] [Nie Z.]Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 8 ] [Nie Z.]National Engineering Laboratory for Industrial Big-data Application Technology, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China

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Source ：

Applied Surface Science

ISSN： 0169-4332

Year： 2025

Volume： 681

6 . 7 0 0

JCR@2022

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 6

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