Cu掺杂镍基MOF复合物的制备及光催化性能研究

Preparation and photocatalytic properties of Cu doped Ni-MOF composite

采用水热法合成了Cu掺杂镍基金属有机框架催化剂(Ni-BDC)复合催化剂,使用傅里叶红外光谱(FT-IR)、X射线粉末衍射分析(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)及N2-吸附脱附等技术对催化剂的结构、形貌进行了表征,并以亚甲基蓝(MB)为目标降解物,对Cu/Ni-BDC光催化性能进行研究。表征结果显示,Cu/Ni-BDC催化剂呈现多孔结构且具有较大的孔径尺寸及比表面积。在可见光的照射下,0.5g·L^(-1)的Cu/Ni-BDC催化剂投入量在150min内对100mL质量浓度为10mg·L^(-1))的MB溶液的降解率达84.8%,且催化剂经过5次循环实验其光催化降解率仍保持在77%以上。

Cu doped Ni-BDC metal-organic framework was synthesized via hydrothermal method,and the structure and morphology of the catalyst was characterized by FT-IR,XRD,SEM,TEM,and nitrogen adsorptiondesorption.Taking methylene blue(MB)as the target degradation product,the photocatalytic properties of Cu/NiBDC was investigated.The characterization results showed that the catalyst possessing porous structure,relatively large pore size specific surface area.The degradation rate of the100mL MB with mass concentration 10mg·L^(-1)reached 84.8% under visible light irradiation in 150min with 0.5g·L^(-1)of Cu/Ni-BDC catalyst amount.Moreover,the degradation rate of MB maintained above 77% after five cycles.