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第 35 卷第 10 期 精 细 化 工 Vol.35, No.10
2018 年 10 月 FINE CHEMICALS Oct. 2018
水处理技术与环境保护
单宁酸/硫酸掺杂聚邻甲氧基苯胺的吸附性能
周进康,龙攀峰,雷 静,任忠吕
(贵州师范学院 化学与生命科学学院,贵州 贵阳 550018)
摘要:以邻甲氧基苯胺为单体,通过化学氧化聚合法合成了单宁酸/硫酸掺杂聚邻甲氧基苯胺(POMA-H-GA),
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采用 FTIR、XRD、SEM 及 BET 对其结构进行了表征。通过平衡吸附实验考察了 POMA-H-GA 对 Cr 的吸附性
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能,并以其为指标优化了 Cr 溶液初始质量浓度、时间、温度、pH。结果表明:POMA-H-GA 在 Cr 初始质量
浓度为 0.1 g/L、时间 3 h、温度 25 ℃、pH=3.0~4.5 时,吸附量为 18.2 mg/g,吸附率达到 93.2%,POMA-H-GA
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对几种重金属离子的吸附量大小顺序为 Cr >Hg >Pb >Cd 。
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关键词:聚邻甲氧基苯胺;单宁酸;掺杂; 吸附;Cr ;水处理技术
中图分类号:TB34 文献标识码:A 文章编号:1003-5214 (2018) 10-1731-07
Adsorption Properties of Gallotannic Acid and Sulfuric Acid
Doped Poly (o-methoxyaniline)
ZHOU Jin-kang, LONG Pan-feng, LEI Jing, REN Zhong-lü
(School of Chemistry and Life Sciences, Guizhou Education University, Guiyang 550018, Guizhou, China)
Abstract: Gallotannic acid and sulphuric acid doped ploy(o-methoxyaniline) composite (POMA-H-GA)
was prepared by chemical oxidation polymerization using o-methoxyaniline as monomer. The sample was
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characterized by FTIR, XRD, SEM and BET. Adsorption of POMA-H-GA on Cr was investigated by
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equilibrium adsorption experiment. The factors affecting Cr adsorption were studied, such as Cr initial
mass concentration, adsorption time, adsorption temperature and pH. The results showed that the adsorption
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capacity of POMA-H-GA on Cr achieved 18.2 mg/g and the adsorption rate was 93.2% when the Cr
initial mass concentration was 0.1 g/L, the adsorption time was 3 h, the adsorption temperature was 25 ℃,
and the pH was in the range of 3.0 to 4.5. In addition, the adsorption capacity of POMA-H-GA for several
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heavy metal ions was in the order of Cr >Hg >Pb >Cd .
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Key words: ploy(o-methoxyaniline); gallotannic acid; doping; adsorption; Cr ; water treatment
Foundation items: National Natural Science Foundation of China (21303028); Project of Education
Department of Guizhou Province (KY[2016]083); Guiyang Municipal Industrial Support Plan Project of
Guizhou Province [2012101] 1-33
聚苯胺(PANI)以其原料价廉易得、合成方法 环苯醌结构组成 [11] ,还具有氧化-还原性 [11-13] ,具有
简单、化学及物理性能优异、环境稳定性好等被认 将吸附在其分子链上的金属离子还原的性能,可用
为是最有应用前景的高分子材料之一 [1-2] ,作为金属 于解决重金属引起的环境污染问题。何丽红 [14] 等制
[5]
防腐 [3-4] 、电磁屏蔽 、电池电极 [6-7] 及吸附材料 [8-9] 备的聚苯胺木质素纳米复合物对银离子的吸附量达
等被广泛关注。聚苯胺分子链上的亚胺基和氨基 N 到 565.4 mg/g。赵霞 [15] 等制备的聚苯胺/Fe 3 O 4 磁性
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原子的孤对电子对金属离子均具有络合作用,掺杂 纳米复合材料对水中痕量 Pb 的去除率达 98%以
聚苯胺分子链上亚氨基容易质子化而具有与金属离 上;徐惠 [16] 等合成的聚苯胺/凹凸棒石纳米复合材料
子进行离子交换的性能 [10] ,掺杂聚苯胺分子链由四 对 Cr(Ⅵ)的吸附性明显优于 Cu(Ⅱ),且对 Cr
收稿日期:2017-10-15; 定用日期:2018-05-21; DOI: 10.13550/j.jxhg.20170832
基金项目:国家自然科学基金项目(21303028);贵州省教育厅项目(黔教合 KY 字[2016]083);贵州省贵阳市工业支撑计划项目[2012101] 1-33
作者简介:周进康(1964—),男,教授,电话:0851-85816647,E-mail:jinkangzhou@126.com。