Green synthesis of the Ag/HZSM-5 nanocomposite by using Euphorbia heterophylla leaf extract: A recoverable catalyst for reduction of organic dyes
Green synthesis of the Ag/HZSM-5 nanocomposite by using Euphorbia heterophylla leaf extract: A recoverable catalyst for reduction of organic dyes
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DOI：
10.1016/j.jallcom.2016.05.278
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发表时间：
2016-11
影响因子：
6.2
通讯作者：
M. Tajbakhsh;H. Alinezhad;M. Nasrollahzadeh;Taghi A. Kamali
中科院分区：
文献类型：
--
作者：
M. Tajbakhsh;H. Alinezhad;M. Nasrollahzadeh;Taghi A. Kamali
本文以大戟叶水提液为稳定剂和还原剂，成功地合成了Ag/HZSM-5纳米复合材料。采用傅里叶变换红外光谱（FT-IR）、场发射扫描电镜（FESEM）、X射线能谱（EDS）、紫外可见光谱（UV-vis）、X射线粉末衍射（XRD）和元素分析等手段对所合成的绿色Ag/HZSM-5纳米复合材料进行了表征。Ag/HZSM-5纳米复合材料在室温下对亚甲基蓝（MB）、刚果（CR）、罗丹明B（Rh B）和4-硝基苯酚（4-NP）等有机染料具有良好的催化还原性能。采用紫外可见光谱法对纳米催化剂在反应中的催化活性进行了监测。有趣的是，Ag/HZSM-5催化剂可以很容易地回收和重复使用几次，而没有任何显着的催化效率损失。
During this paper, the Ag/HZSM-5 nanocomposite has been successfully synthesized by using an aqueous extract ofEuphorbia heterophyllaleaves as a stabilizing and reducing agent. The green synthesized Ag/HZSM-5 nanocomposite was characterized by FT-IR (Fourier transform infrared spectroscopy), FESEM (field emission scanning electron microscopy), EDS (energy dispersion X-ray spectroscopy), UV–vis, XRD (X-ray powder diffraction) and elemental mapping. The Ag/HZSM-5 nanocomposite was found to be efficient nanocatalyst for the reduction of organic dyes such as Methylene blue (MB), Congo red (CR), Rhodamine B (RhB) and 4-nitrophenol (4-NP) in water at room temperature. The catalytic activities of the nanocatalyst in reactions were monitored by using UV–vis spectroscopy. Interestingly, the Ag/HZSM-5 catalyst can be easily recovered and reused several times without any significant loss of catalytic efficiency.