六方相氮化硼负载铜纳米粒子的制备及其催化还原对硝基苯酚  

Synthesis of hexagon boron nitride supported copper nanoparticles and their application in the catalytic reduction of p- nitrophenol

作　　者：刘秋文[1] 黄彩进[1] 

机构地区：[1]福州大学光催化研究所,福建福州350002

出　　处：《福州大学学报（自然科学版）》2016年第1期129-133,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金面上资助项目(21273038)

摘　　要：利用一步高温烧结法制备得到稳定的六方相氮化硼(h-BN)负载纳米单质铜复合物Cu/BN,并通过X-射线衍射仪、傅里叶红外光谱仪、紫外-可见漫反射光谱仪以及扫描电子显微镜等仪器对其结构进行表征.另外,将所制备的Cu/BN复合物用于催化还原对硝基苯酚.研究发现,Cu/BN复合物具有良好的稳定性和催化还原对硝基苯酚的性能,利用不同温度下反应速率的线性拟合算出反应的动力学活化能约为110 k J·mol-1.Stable Cu/BN composites were prepared by dispersing copper nanoparticles on h - BN through one - step high - temperature sintering method. The structural features of the as - obtained composites were characterized by X - ray diffraction, Fourier transform infrared spectroscopy, ultravio- let- visible diffuse reflection spectroscopy and scanning electron microscope. Moreover, the catalytic activities were evaluated by reducing p -nitrophenol into p -aminophenol. It was found that the Cu/BN composites have a good stability in air and keep an excellent activity for the catalytic hydrogen- ation of p - nitrophenol. The activation energy of this reduction reaction was determined to be about 110 kJ mol-1 .

关 键 词：一步烧结法 铜纳米粒子 六方氮化硼 对硝基苯酚 

分 类 号：O643[理学—物理化学]