文献类型：期刊文献

英文题名：Net-like porous activated carbon materials from shrimp shell by solution-processed carbonization and H3PO4 activation for methylene blue adsorption

作者：Liu, Xin[1];He, Changquan[1];Yu, Xingjian[1];Bai, Yuting[1];Ye, Ling[1];Wang, Bangsen[1];Zhang, Lingfan[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China

年份：2018

卷号：326

起止页码：181

外文期刊名：POWDER TECHNOLOGY

收录：;EI(收录号：20175204576243);WOS:【SCI-EXPANDED(收录号:WOS:000425077200022)】；

基金：We are grateful for the financial support by National Natural Science Foundation of China (Grant No. 21407050) and the Fundamental Research Funds for the Central Universities (Grant No. 22A201514019).

语种：英文

外文关键词：Shrimp shell; Activated carbon; Carbonization and activation; Dyes; Adsorption

摘要：In this work, shrimp shell waste was used as a novel precursor for the production of a net-like porous activated carbon by solution-processed carbonization and chemical activation with phosphoric acid (H3PO4). The H3PO4 activation of activated carbon from shrimp shell (PS-Ac) was characterized in terms of textural, surface and morphological properties by N-2 sorption, Raman, HR-TEM and SEM-EDS analyses. It showed that PS-Ac was a net-like porous material with mesoporous structures. The average pore size and BET surface area were 4.5 nm and 560.6 m(2) g(-1), respectively. The obtained PS-Ac was then employed for the adsorption of methylene blue (MB) dyes and systematically investigated the effect of solution pH, initial concentration, contact time and temperature for MB adsorption. Experimental data were well described by the Langmuir isotherm and the pseudo-second order model with the maximum adsorption capacity of 826 mg g(-1)(MB), which showed to be high compared to other ACs reported in the literature. Thermodynamic parameters indicated that PS-Ac for MB adsorption process was spontaneous and endothermic. Moreover, coupled with experimental results, Fr-IR and XPS analysis suggested that the adsorption mechanism of MB onto PS-Ac was possible attributed to electrostatic interaction between the surface of functional groups (-PO43-, -C00(-), -O-) on adsorbent and the cation ions MB-N+ in the basic solution. (C) 2017 Elsevier B.V. All rights reserved.