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%。
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.
作者
李琼
胡育
宋连香
刘素君
王应红
LI Qiong;HU Yu;SONG Lian-xiang;LIU Su-jun;WANG Ying-hong(College of Chemistry,Leshan Normal University,Leshan 614000,China)
出处
《中国沼气》
2020年第1期49-52,共4页
China Biogas
基金
四川省科技厅重点研发项目(2017GZ0136)
四川省教育厅项目(17ZA197)。
作者简介
李琼(1976-),女,汉族,四川省苍溪县人,高级实验师,主要研究方向为水处理,E-mail:limatouhan@sina.com;通信作者:王应红,E-mail:850840785@qq.com。
