化工学报2012，Vol.63Issue(8)：2623-2628,6.DOI:10.3969/j.issn.0438-1157.2012.08.040
P123辅助SB粉溶胶制备大孔径介孔γ-Al2O3及其对甲基蓝的强化吸附性能
P123-assisted synthesis of enlarged mesoporous γ-Al2O3 from SB pseudoboehmite sol and its enhanced adsorption performance towards methyl blue
摘要
Abstract
The enlarged mesoporous γ-Al2O3 with significant enhanced adsorption performance towards methyl blue was synthesized via the solvent evaporation-induced self-assembly method from SB pseudoboehmite sol peptized by nitric acid using triblock copolymer P123 as structure directing agent. The effects of hydrothermal pretreatment on the structure, textural properties, morphology of the as-prepared γ-Al2O3 and the adsorption performance towards methyl blue were studied by XRD, TEM, N2 adsorption and UV-Vis techniques. The results showed that the as-prepared mesoporous γ-Al2O3 had excellent adsorption performance towards methyl blue, and the adsorption fitted Langmuir isotherm well. Its equilibrium removal capacities were 267 and 1500 mg · g-1 respectively, when it adsorbed 300 mg ·L-1 methyl blue solution for 60 min, and 3000 mg · L-1 methyl blue solution for 150 min, much higher than 150 and 1080 mg·g -1 respectively of theγ-Al2O3 obtained from SB. The results also showed that hydrothermal pretreatment could increase its specific surface area and adsorption rate towards methyl blue, while having no significant effects on the uniform mesoporous structure and equilibrium removal capacity of the mesoporous γ-Al2O3. This study offers new opportunity for mesoporous alumina in adsorption of dye, such as methyl blue from wastewater.关键词
溶剂蒸发诱导自组装/P123/水热预处理/介孔γ-Al2O3/吸附/甲基蓝Key words
solvent evaporation-induced self-assembly/ P123/ hydrothermal pretreatment/ mesoporous γ-Al2O3/ adsorption/ methyl blue分类
化学化工引用本文复制引用
汪泽华,蔡卫权,郭蕾,童亚超,胡玉珍..P123辅助SB粉溶胶制备大孔径介孔γ-Al2O3及其对甲基蓝的强化吸附性能[J].化工学报,2012,63(8):2623-2628,6.基金项目
国家自然科学基金项目(51142002) （51142002）
国家大学生创新性实验计划基金项目(101049764) （101049764）
武汉理工大学自主创新研究基金项目(113220002,125220001,116820003). （113220002,125220001,116820003）
