茶叶渣负载纳米铁的制备及对水溶液中酸性金黄G的去除

功能材料, 2010, 41(z3): 579-582.

茶叶渣负载纳米铁的制备及对水溶液中酸性金黄G的去除

林玉满 ^1, , 刘晓彬 ^2, , 孙琼花 ^3, , 陈祖亮 ^4,

1.福建师范大学,化学与材料学院,福建,福州,350007

2.福建师范大学,化学与材料学院,福建,福州,350007

3.福建师范大学,化学与材料学院,福建,福州,350007

4.福建师范大学,化学与材料学院,福建,福州,350007

关键词：纳米铁 , 酸性金黄G , 负载 , 表征 , 动力学

Preparation of tea residue supported nanoscale zero-valent iron and its removal of methanil yellow G from aqueous solution

采用硼氢化钠液相还原法制备纳米铁(nZVI)和茶叶渣负载纳米铁(TS60-nZVl),研究其对酸性金黄G(MYG)染料的脱色.结果表明,TS60-nZVl对MYG脱色比nZVI更好,脱色率达92.55%.SEM显示纳米铁经茶叶渣负载后提高了分散性,减少团聚;XRD表明TS60-nZVI与MYG反应后,其纳米Fe0的衍射峰消失,出现了铁氧化物和氢氧化物的衍射峰,说明反应过程纳米Fe0被氧化.动力学研究表明,Ts60-nZVI对水溶液中的MYG还原遵循伪一级反应动力学,表观速率常数Kobs为6.0×10-3 min-1,半衰期为115.52min.

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茶叶渣负载纳米铁的制备及对水溶液中酸性金黄G的去除

Preparation of tea residue supported nanoscale zero-valent iron and its removal of methanil yellow G from aqueous solution

参考文献