| CuCo/BNNSs纳米催化剂对固态储氢材料氨硼烷水解的催化性能 | |
| Catalytic Performance of CuCo/BNNSs Nanocatalysts for Hydrolysis of Solid State Hydrogen Storage Material Ammonia Borane | |
| 摘要: 采用共还原法将CuCo双金属负载到通过聚乙烯吡咯烷酮（PVP）辅助离子插层法制备的少层氮化硼纳米片（BNNSs）上，获得了平均粒径为2.7 nm且高度分散的铜钴/氮化硼纳米片（CuCo/BNNSs）纳米催化剂。通过原子力显微镜（AFM）、X射线衍射（XRD）、傅里叶转换红外光谱（FTIR）、拉曼光谱（Raman）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）和高分辨率透射电镜（HRTEM）对载体及催化剂的结构及形貌进行表征，并研究了CuCo/BNNSs的催化性能。研究发现，由于Cu、Co、BNNSs和OH-之间高效的四重效应协同使得Cu0.5Co0.5/BNNSs纳米催化剂在室温、pH=14条件下对氨硼烷（AB，NH3BH3）水解释氢具有极高的催化活性。转化频率（TOF）值达到104.52 molH2·molmetal-1·min-1，且CuCo/BNNSs纳米催化剂具有良好的稳定性，6次循环利用后仍保持较高催化活性。 | |
| 关键词: 氮化硼纳米片 CuCo合金 负载型催化剂 协同效应 氨硼烷 制氢 | |
| 基金项目: | |
| Abstract: CuCo bimetallic nanoparticles were supported on few layer boron nitride nanosheets (BNNSs) prepared by polyvinylpyrrolidone (PVP)-assisted ion intercalation, and a highly dispersed copper-cobalt/boron nitride nanosheets (donated as CuCo/BNNSs) nanocatalyst with an average particle size of 2.7 nm was obtained with a method of co-reduction. The structure and morphology of the carrier and catalyst were characterized by atomic force microscope (AFM), X-ray diffraction (XRD), fourier transform infrared (FTIR), Raman spectra (Raman), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and high resolution transmission electron microscopy (HRTEM), and the catalytic performance of CuCo/BNNSs was studied. The results showed that Cu0.5Co0.5/BNNSs nanocatalysts exhibited high catalytic activity towards the hydrolysis of ammonia borane (AB, NH3BH3) at room temperature when pH value was 14 and the turn over frequency (TOF) reached 104.52 molH2·molmetal-1·min-1 due to the highly efficient quadruple synergistic effect between Cu, Co, BNNSs and OH-. Moreover, the CuCo/BNNSs nanocatalyst also had good stability and high catalytic activity was maintained after 6 cycles. | |
| Keywords: boron nitride nanosheets CuCo alloys supported catalysts cooperative effects ammonia borane hydrogen production | |
| 投稿时间：2019-07-19 修订日期：2019-11-09 | |
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| 翟佳欣,李国华,甘思平,张雪明,朱萌萌,张晓蕊,胡恩言.CuCo/BNNSs纳米催化剂对固态储氢材料氨硼烷水解的催化性能[J].无机化学学报,2020,36(2):241-252. | |
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