刚果红
催化作用
甲基橙
多孔性
化学
可重用性
纳米颗粒
化学工程
废水
纳米-
橙色(颜色)
材料科学
核化学
有机化学
吸附
纳米技术
复合材料
废物管理
工程类
程序设计语言
软件
光催化
计算机科学
食品科学
作者
Yuanyuan Yu,Huashuang Huo,Qingtong Zhang,Yangyang Chen,Shuangfei Wang,Xi Liu,Changzhou Chen,Douyong Min
标识
DOI:10.1016/j.indcrop.2021.114268
摘要
The natural wood can be used as a multifunctional material e.g. a reducing agent and a stabilizer due to the reducing functional groups and three-dimensional network structure. In this work, a wood catalyst decorated with silver nanoparticles (Ag NPs) was prepared and used to catalyze the hydrogenation of azo dyes. The systematic characterizations revealed that the Ag NPs were uniformly present on the wood surface. The Ag NP/wood exhibited an excellent catalytic activity for hydrogenating methyl orange (MO), congo red (CR) and erichrome black T (EBT), and their reaction rate constants were calculated as 1.533, 0.969 and 0.707 min−1, respectively. The factors affecting the hydrogenation efficiency of azo dyes were elucidated by the density functional theory (DFT). The catalyst had a good reusability, for instance the hydrogenation efficiency of MO retained as 90% in 5 min after six recycles. In addition, the mechanism of MO hydrogenated by NaBH4 catalyzed with the Ag NPs/wood was proposed.
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