| 氨基修饰二氧化硅对Cr^3+和直接桃红B12的吸附 |
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| 引用本文： | 李琼,胡育,宋连香,刘素君,王应红.氨基修饰二氧化硅对Cr^3+和直接桃红B12的吸附[J].中国沼气,2020(1):49-52. |
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| 作者姓名： | 李琼 胡育 宋连香 刘素君 王应红 |
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| 作者单位： | 乐山师范学院化学学院 |
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| 基金项目： | 四川省科技厅重点研发项目(2017GZ0136);四川省教育厅项目(17ZA197)。 |
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| 摘 要： | 该试验以硅烷偶联剂KH-550为改性剂,乙醇为溶剂合成氨基二氧化硅。利用红外光谱、扫描电镜、原子吸收光谱、可见分光光度法对改性前后SiO 2进行表征,研究其对铬离子及染料直接桃红B12的吸附情况。结果表明:25℃恒温振荡20 min,改性SiO 2吸附重金属离子Cr^3+效果明显,当其用量为0.04 g时,吸附率达99.01%,而相同条件下未改性SiO 2对Cr^3+吸附率只有25.13%;将其用于染料直接桃红B12的吸附,改性后SiO 2吸附率达91.97%,相同条件下未改性SiO 2的吸附率仅为34.23%。
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| 关 键 词： | 二氧化硅 KH-550 重金属Cr 3+ 直接桃红 吸附 |
Effect of Amino Modified Silica on Adsorption of Cr 3+and Direct Pink B12 |
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| LI Qiong,HU Yu,SONG Lian-xiang,LIU Su-jun,WANG Ying-hong.Effect of Amino Modified Silica on Adsorption of Cr 3+and Direct Pink B12[J].China Biogas,2020(1):49-52. |
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| Authors: | LI Qiong HU Yu SONG Lian-xiang LIU Su-jun WANG Ying-hong |
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| Affiliation: | (College of Chemistry,Leshan Normal University,Leshan 614000,China) |
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| Abstract: | Amino silica was synthesized with silane coupling agent KH-550 as modifier and ethanol as solvent.The SiO 2 modified before and after were characterized by infrared spectroscopy,scanning electron microscopy,atomic absorption spectroscopy and visible spectrophotometry,and its adsorption properties to Cr^3+and direct pink B12 were studied.The results showed that the adsorption properties of Cr 3+and direct pink B12 were significantly improved.The adsorption rate of Cr^3+on amino silica reached 99.01%after 20 min of oscillation at 25℃,which was only 25.13%before modification.The adsorption rate of direct pink B12 on amino silica was reached 91.97%,which was only 34.23%before modification. |
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| Keywords: | KH-550 modified silica chromium ion direct pink |
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