The Synthesis And Catalytic Properties Of Micro-Nano Cu, CuO And ZnO Based On Metal-organic Frameworks

Because of their unique physical and chemical properties, copper, copper oxide and zinc oxidemicro/nano materials have been used extensivety in catalysis, electrochemistry, gas detection and so on.Herein, we explored the effects of different ligands, spatial structure and reduction pathways to themorphology and catalytic propertices of metal and metal oxide which prepared from metal-organicframeworks as precursor. The results show that metal and metal oxide morphology, catalytic propertiesare influenced by the composition of complexes, space structure and reduction conditions.1. First, Using three different origanic ligands including4,4’,4”-s-Triazine-1,3,5-triyltri-paminobenzoic Acid (H3TATAB), Trimesic Acid (H3BTC), and p-PhthalicAcid (H2BDC) with Zn(Ⅱ) by covalent bonds, successfully prepared three different coordinationcompounds, ZnO(TATAB)2·16(DMF)·5(H2O)(1),{[Zn3(btc)2(H2O)8]·(H2O)4}n(2), ZnO(BDC)2(3).Six different ZnO nano/micro particles were prepared from solid-state annealing of that three differentMOF precursor in N2or air. The photocatalytic behaviour of the prepared ZnO was tested throughdegradation of Rh.B. The results suggest that, under UV light irradiation over97%of Rh.B was degradedin1h. Rh.B was degraded over80%after3cycles.2. Using three origanic ligands Trimesic Acid (H3BTC) and Cu(Ⅱ) successfully prepared threedifferent dimension coordination compounds, a metal–organic coordination chain of Cu(II), viz{[Cu(Hbtc)(NH3)4](H2O)}n(4), a three-fold parallel interpenetration network[Cu3(BTC)2(H2O)3(NH3)4]n·2nH2O (5), a two-dimensional bilayer structure[Cu4(BTC)2(OH)2(H2O)2(NH3)4]n(5),3D [Cu3(BTC)2(H2O)3]n (6). Four different Cu nano/microparticles were prepared from solid-state annealing of that three different MOF precursor in N2and fourdifferent CuO nano/micro particles were got in air. We discussed the influence of temperature of crystalphase and morphology of the sample. Metallic copper nano/micro particles show high catalytic activity forreduction of4-nitrophenol. The influence of particle size on the catalytic reaction rate was discussed, andwe put forward the possible catalytic rection mechanism. 3. Using three origanic ligands Trimesic Acid (H3BTC) and Cu(Ⅱ) successfully prepared threedifferent dimension coordination compounds, a metal–organic coordination chain of Cu(II), viz{[Cu(Hbtc)(NH3)4](H2O)}n(4), a three-fold parallel interpenetration network[Cu3(BTC)2(H2O)3(NH3)4]n·2nH2O (5), a two-dimensional bilayer structure[Cu4(BTC)2(OH)2(H2O)2(NH3)4]n(5),3D [Cu3(BTC)2(H2O)3]n (6). We used hydrazine hydrate asreducing agent to reduce MOFs got nano-Cu particles. We discussed the morphology and catalyticproperties of nano-copper. Metallic copper nano particles show high catalytic activity for reduction of4-nitrophenol.