Guo Zhangwei, Liu Tong, Wang Qingtao, Gao Guanhui
College of Ocean Science and Engineering, Shanghai Maritime University Haigang Ave 1550 201306 Shanghai China.
College of Materials Science and Engineering, Qingdao University of Science and Technology Zhengzhou Rd 53 266000 Qingdao China
RSC Adv. 2018 Jan 3;8(2):843-847. doi: 10.1039/c7ra10568a. eCollection 2018 Jan 2.
Bimetallic cost-effective CoNi nanoparticles (NPs) are conveniently supported on titanium carbides (MXene) by a simple one-step wet-chemical method. The synthesized CoNi/MXene catalysts are characterized by XPS, TEM, STEM-HAADF and ICP-AES. The as-prepared CoNi NPs with a size of 2.8 nm are well dispersed on the MXene surface. It is found that among the CoNi bimetallic system, CoNi shows the best performance toward catalyzing ammonia borane (AB) decomposition with a turnover frequency value of 87.6 mol mol min at 50 °C. The remarkable catalytic performance is attributed to the mild affiliation of MXene to NPs, which not only stabilizes NPs to maintain a good dispersion but also leaves sufficient surface active sites to facilitate the catalytic reaction.
通过简单的一步湿化学方法，可方便地将具有成本效益的双金属钴镍纳米颗粒（NPs）负载在碳化钛（MXene）上。通过XPS、TEM、STEM-HAADF和ICP-AES对合成的CoNi/MXene催化剂进行了表征。所制备的尺寸为2.8 nm的CoNi NPs在MXene表面分散良好。研究发现，在CoNi双金属体系中，CoNi在催化氨硼烷（AB）分解方面表现出最佳性能，在50°C下的周转频率值为87.6 mol mol⁻¹ min⁻¹。这种显著的催化性能归因于MXene与NPs的适度结合，这不仅稳定了NPs以保持良好的分散性，还留下了足够的表面活性位点以促进催化反应。
