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摘要
以壳聚糖为生物模板制备介孔纳米氧化铈材料,对合成的纳米氧化铈进行了X射线衍射(XRD),扫描电子显微镜(SEM),N2-吸附脱附表征。以甲基橙溶液为模拟的染料废水,探究了氧化铈的用量、溶液的pH、吸附时间等因素,对介孔氧化铈吸附甲基橙溶液的影响。结果表明:合成的纳米氧化铈具有海绵状多孔的微观结构,比表面积为202m2/g,空隙量为0.199cm3/g,平均孔径为12.48nm,在pH=7,纳米氧化铈用量为0.3g,甲基橙浓度为 3mg/L,吸附时间为30min的条件下,对甲基橙的吸附率可达到61.56%。
Abstract
Taking the chitosan as template in biological template method,mesoporous cerium oxide material was prepared.The material was characterized with XRD,SEM and N2-adsorption and desorption representation with methyl orange solution as simulated dye wastewater.Meanwhile,it researched the influence of adsorbent concentration,pH value and adsorbent time on the adsorbent behavior of simulating methyl orange solution.The result verified that the synthesised cerium oxide had spongy porous microstructure with the specific area of 202m2/g,the void content of 0.199cm3/g and average pore size of 12.48nm.When pH=7,the dosage of adsorbent was 0.3g,methyl orange concentration was 3mg/L and adsorbent time was 30min,the adsorption rate to methyl orange can reach to 61.56%.
关键词
生物模板法
/
氧化铈
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甲基橙
Key words
biological template method
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cerium oxide
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methyl orange
生物模板法合成多孔结构氧化铈及其吸附性能研究[J].
化工新型材料, 2018, 46(9): 202-204 DOI:
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基金资助
辽宁省教育厅科学研究一般项目(L2013152);国家水体污染控制与治理科技重大专项课题(2012ZX07202-002)
