纳米复合材料
材料科学
热重分析
化学工程
扫描电子显微镜
傅里叶变换红外光谱
选区衍射
催化作用
铜
透射电子显微镜
无机化学
化学
纳米技术
有机化学
复合材料
冶金
工程类
作者
Anindita Chakraborty,Dewan Azharul Islam,H. N. Acharya
标识
DOI:10.1016/j.materresbull.2019.110592
摘要
In this study, we report a low temperature chemical decomposition method for the synthesis of ZnO-CuO nanocomposites from ZnAl-layered double hydroxides (ZnAl-LDHs) supported copper terephthalate based metal organic frameworks [Cu-(BDC) MOFs]. The Cu-(BDC) MOFs arrays on the surface of ZnAl-LDHs nanosheets are obtained via in situ nucleation and directed growth from the terephthalate (BDC) anion intercalated ZnAl-LDHs. Cu(II) ion coordinates with BDC ligand in a bidentate bridging fashion to form Cu-(BDC) MOFs. The as prepared Cu-(BDC) MOFs are strongly and uniformly anchored onto the surfaces of ZnAl-LDHs. Decomposition of the resultant ZnAl-LDH supported Cu-(BDC) MOF precursor in alkaline solution for 24 h leads to the formation of ZnO-CuO nanocomposites. The structures and morphology of the nanocomposites are discussed with the results of scanning electron microscopy (SEM), transmission electron microscopy (TEM) combined with selected area electron diffraction (SAED) images, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). The resulting ZnO-CuO nanocomposites show peroxidase like catalytic activity towards orthophenylene diamine oxidation (OPDox) and rhodamine 6 G (R6 G) dye degradation.
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