| Zr掺杂介孔硅对亚甲基蓝的选择性吸附性能 |
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| 引用本文： | 沈 浩1,黄 茜1,冯锐捷1,商 铭1,吕仁亮1,2,徐彩丽3,李 萍1,陈苏芳1,韩庆文2. Zr掺杂介孔硅对亚甲基蓝的选择性吸附性能[J]. 武汉工程大学学报, 2023, 45(1): 25-34. DOI: 10.19843/j.cnki.CN42-1779/TQ.202204005 |
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| 作者姓名： | 沈 浩1 黄 茜1 冯锐捷1 商 铭1 吕仁亮1 2 徐彩丽3 李 萍1 陈苏芳1 韩庆文2 |
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| 作者单位： | 1. 武汉工程大学化工与制药学院，绿色化工过程教育部重点实验室（武汉工程大学），湖北 武汉 430205；2. 湖北三峡实验室，湖北 宜昌 443007；3. 武汉工程大学邮电与信息工程学院，湖北 武汉 430074 |
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| 摘 要： |
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Selective Adsorption of Methylene Blue on Zr-Doped Mesoporous Silica |
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| Affiliation: | 1. School of Chemical Engineering and Pharmacy， Wuhan Institute of Technology；Key Laboratory of Green Chemical Process （Wuhan Institute of Technology），Ministry of Education， Wuhan 430205，China；2. Hubei Three Gorges Laboratory， Yichang 443007，China；3. The College of Post and Telecommunication of Wuhan Institute of Technology， Wuhan 430074，China
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| Abstract: | Mesoporous silica with worm-like channels was synthesized using hydroxyethyl cellulose as template and sodium metasilicate as silicon source. Adsorbents with different Zr content were prepared by direct synthesis method （named as Zr-HECMS-D）and post-grafting method （named as Zr-HECMS-P）respectively. Selective adsorption performance of each adsorbent for methylene blue in methylene blue/methyl orange mixed solution was evaluated. The results show that the optimum pH value of the adsorption process is 10.Under acidic conditions，Zr-HECMS-D with Zr/Si molar ratio of 0.02 and Zr-HECMS-P with Zr/Si molar ratio of 0.01 have the best selective adsorption performances， and the methylene blue removal efficiency is proportional to the proportion of O in Zr-O-Si on the surface of adsorbents as well. The metal doping amount has little effect on the selectivity under alkaline conditions. The adsorption process is conformed to the pseudo-second-order kinetic model， and the adsorption equilibrium is conformed to the Langmuir adsorption model.
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