巯基改性介孔硅酸钙的合成及其对Pb~(2+)的吸附性能
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- 论文作者：刘立华 ; 李童 ; 王易峰 ; 刘金燕 ; 胡博强
- 年：2016
- 作者机构：湖南科技大学化学化工学院理论有机化学与功能分子教育部重点实验室分子构效关系湖南省普通高等学校重点实验室;
- 论文关键词：巯基化介孔硅酸钙 ; 铅离子 ; 吸附性能 ; 再生性能
- 会议召开时间：2016-12-01
- 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
- 语种：中文
- 分类号：O647.3;X703
- 学会代码：HJKP
- 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：中国环境科学学会
- 学会名称：中国环境科学学会
- 页数：8
- 文件大小：1587k
- 原文格式：D
- 会议级别：全国
摘要
以介孔硅酸钙(MCS)为原料,(3-巯基丙基)三甲氧基硅烷为改性剂通过后接枝法制备巯基化介孔硅酸钙(MCS-SH)。采用XRD、FT-IR、BET表面分析、SEM、TEM和EDX等对其结构和组成进行表征;考察了其对Pb~(2+)的吸附和洗脱再生性能,并与MCS和活性炭进行比较。结果表明,MCS-SH仍维持较稳定的介孔结构,为夹缝孔,比表面积为129.32 m~2·g~(-1),孔径范围为5-49 nm,比表面积比MCS减少28.81 m~2·g~(-1),孔径减少2 nm;MCS-SH中接入的-SH量为0.1678 mmol·g~(-1);在293 K下,MCS-SH对Pb~(2+)的最大吸附容量为612.45 mg·g~(-1),明显高于MCS的最大吸附容量544.84 mg·g~(-1);在相同条件下,MCS-SH对Pb~(2+)的平衡吸附量大于MCS-SH,远大于活性炭;MCS-SH具有优良的吸附/再生性能,有望成为一种性能优良的重金属离子吸附材料。
引文
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[2]Kavak D.Removal of lead from aqueous solutions by precipitation:statistical analysis and modeling[J].Desalination and Water Treatment,2013,51(7-9):1720-1726
[3]Kang S Y,Lee J U,Moon S H,et al.Competitive adsorption characteristics of Co2+,Ni2+,and Cr3+by IRN-77cation exchange resin in synthesized wastewater[J].Chemosphere,2004,56(2):141-147
[4]Wang L K,Hung Y T,Shammas N K.Advanced physicochemical treatment technologies[M].Humana Press,2007
[5]Fu F,Wang Q.Removal of heavy metal ions from wastewaters:a review[J].Journal of Environmental Management,2011,92(3):407-418
[6]Sheikhhosseini A,Shirvani M,Shariatmadari H.Competitive sorption of nickel,cadmium,zinc and copper on palygorskite and sepiolite silicate clay minerals[J].Geoderma,2013,192:249-253
[7]Shafiabadi M,Dashti A,Tayebi H A.Removal of Hg(II)from aqueous solution using polypyrrole/SBA-15nanocomposite:experimental and modeling[J].Synthetic Metals,2016,212:154-160
[8]Anbia M,Kargosha K,Khoshbooei S.Heavy metal ions removal from aqueous media by modified magnetic mesoporous silica MCM-48[J].Chemical Engineering Research and Design,2015,93:779-788
[9]王延梅,袁海宽.氨丙基硅三烷改性介孔二氧化硅及对痕量镉(Ⅱ)的分离富集性能研究[J].分析测试学报,2015,34(12):1382-1386
[10]Mureseanu M,Reiss A,Stefanescu I,et al.Modified SBA-15 mesoporous silica for heavy metal ions remediation[J].Chemosphere,2008,73(9):1499-1504
[11]Jia Y J,Zhang Y J,Wang R W,et al.Mesoporous Zirconium Phosphonate Hybrid Material as Adsorbent to Heavy Metal Ions[J].Industrial and Engineering Chemistry Research,2012,51(38):12266-12273
[12]Ma T Y,Zhang X J,Shao G S,et al.Ordered Macroporous Titanium Phosphonate Materials:Synthesis,Photocatalytic Activity,and Heavy Metal Ion Adsorption[J].Journal of Physical Chemistry C,2008,112(8):3090-3096
[13]Wu Z X,Webley P A,Zhao D Y.General and Controllable Synthesis of Novel Mesoporous Magnetic Iron Oxide@Carbon Encapsulates for Efficient Arsenic Removal[J].Advanced Materials,2012,24(4):485–491
[14]刘立华,杨刚刚,王易峰,等.模板法合成介孔硅酸钙及其对重金属离子的吸附性能[J].环境化学,2016,35(9):1943-1951
[15]Zhang M L,Chang J.Surfactant-assisted sonochemical synthesis of hollow calcium silicate(CSH)microspheres for drug delivery[J].Ultrasonics Sonochemistry,2010,17(5):789-792
[16]Mostafa N Y,Kishar E A,Abo-El-Enein S A.FTIR study and cation exchange capacity of Fe3+-and Mg2+-substituted calcium silicate hydrates[J].Journal of Alloys and Compounds,2009,473:538–542
[17]Zhu J Z,Yang J,Deng B L.Ethylenediamine-modified activated carbon for aqueous lead adsorption[J].Environmental Chemistry Letters,2010,8:277–282