Study on adsorption process of rhodamine B on ordered mesoporous carbon - 文章详情页

作者：

Sun, H. (Sun, H..) | Li, Q. (Li, Q..) (学者：李强) | Wei, Q. (Wei, Q..) | Nie, Z. (Nie, Z..)

收录：

Scopus PKU CSCD

摘要：

Ordered　mesoporous　carbon　materials(OMC)　was　synthesized　from　polymerization　of　resorcinol　and　formaldehyde　in　the　presence　of　poly(ethylene　oxide)-poly(propylene　oxide)-poly(ethylene　oxide)　triblock　copolymer(Pluronic　F127)　under　acidic　conditions.　The　obtained　OMC　with　BET　surface　area　of　661.98　m　2/g,　pore　volume　of　0.46　cm　3/g　and　pore　size　of　6.44　nm　was　applied　for　adsorption　of　Rhodamine　B(RhB)　dye　from　aqueous　solution　and　the　adsorption　isotherm　and　adsroption　kinetics　were　investigated.　The　results　show　that　the　adsorption　process　follows　the　Langmuir　isotherm　and　pseudo-second-order　kinetic　models.　The　thermodynamic　parameters　free　energy　of　adsorption　(ΔG　0),　enthalpy　(ΔH　0)　and　entropy　(ΔS　0)　changes　were　calculated　and　the　obtained　data　indicates　that　the　adsorption　process　is　spontaneous　and　exothermic.　The　adsorption　amount　can　be　significantly　influenced　by　the　pH　of　the　aqueous　solution,　because　the　pH　can　change　the　aggregation　state　of　RhB　and　the　size　of　RhB　which　will　affect　the　adsorption　amount　of　RhB　onto　OMC.

关键词：

Adsorption; Kinetics; Ordered mesoporous carbon; Rhodamine B; Thermodynamic

作者机构：

[ 1 ] [Sun, H.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Li, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wei, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Nie, Z.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

李强
[Li, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

qyli@bjut.edu.cn

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