Trace Cu (II) removal from N-methylpyrrolidone with hydrogel rich in O, N and S active sites - Details

author：

Chang, Zhouxin (Chang, Zhouxin.) ^[1] | Zhang, Jiamei (Zhang, Jiamei.) ^[2] | Ye, Changshen (Ye, Changshen.) ^[3] (Scholars：叶长燊) | Chen, Jie (Chen, Jie.) ^[4] (Scholars：陈杰) | Qi, Zhaoyang (Qi, Zhaoyang.) ^[5] | Wang, Qinglian (Wang, Qinglian.) ^[6] (Scholars：王清莲) | Qiu, Ting (Qiu, Ting.) ^[7] (Scholars：邱挺)

Indexed by：

EI Scopus

Abstract：

The　presence　of　a　considerable　quantity　of　metal　ions　in　N-methylpyrrolidone　(NMP)　applied　for　the　cleaning　of　electronic　devices,　especially　chips,　results　in　a　breakdown　effect,　thus　affecting　their　overall　durability　and　performance.　Here,　hydrogel　that　rich　in　O,　N,　and　S　active　sites　was　prepared,　which　can　effectively　remove　trace　amounts　of　Cu　(II)　from　N-methylpyrrolidone.　The　material　was　synthesized　through　a　one-pot　crosslinking　and　ion　exchange　method　and　is　named　SLH.　The　physicochemical　properties　and　adsorption　experiments　were　conducted.　It　was　found　that　SLH-2　exhibited　outstanding　Langmuir　maximum　adsorption　capacity　of　136.99　mg/g　at　an　initial　Cu　(II)　concentration　of　200　mg/L.　By　utilizing　SLH-2　in　electronic　grade　adsorption　experiments,　concentration　of　trace　Cu　(II)　decreased　from　12.3　μg/L　to　5.39　μg/L.　Additionally,　concentration　of　Zn,　Fe,　Mg,　and　Ni　significantly　reduced　to　less　than　1　μg/L,　with　–NH2　and　–COOH　playing　crucial　roles　in　the　adsorption　process.　The　research　results　indicate　that　predominant　adsorption　mechanisms　are　surface　coordination　and　ion　exchange.　The　adsorption　energy　between　active　functional　groups　and　Cu　(II)　was　calculated　using　density　functional　theory　(DFT),　revealing　an　affinity　order　of　–COOH　＞　–SO3H　＞　–NH2　＞　–OH.　This　work　not　only　developed　an　adsorbent　for　capturing　trace　Cu　(II),　but　also　provided　new　strategies　for　the　removal　of　metal　ions　in　wet　chemicals.　©　2024　Elsevier　B.V.

Keyword：

Adsorption Copper compounds Density functional theory Hydrogels Ion exchange Metal ions Physicochemical properties Trace elements

Community：

[ 1 ] [Chang, Zhouxin]Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 2 ] [Zhang, Jiamei]Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 3 ] [Ye, Changshen]Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 4 ] [Ye, Changshen]Qingyuan Innovation Laboratory, Quanzhou; 362801, China
[ 5 ] [Chen, Jie]Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 6 ] [Chen, Jie]Qingyuan Innovation Laboratory, Quanzhou; 362801, China
[ 7 ] [Qi, Zhaoyang]Qingyuan Innovation Laboratory, Quanzhou; 362801, China
[ 8 ] [Wang, Qinglian]Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 9 ] [Wang, Qinglian]Qingyuan Innovation Laboratory, Quanzhou; 362801, China
[ 10 ] [Qiu, Ting]Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 11 ] [Qiu, Ting]Qingyuan Innovation Laboratory, Quanzhou; 362801, China