Liu Tong, Wang Qing-Tao, Sun Yong-Heng, Zhao Mei
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266000, China.
J Nanosci Nanotechnol. 2019 Nov 1;19(11):7392-7397. doi: 10.1166/jnn.2019.16722.
Herein, we successfully immobilized non-noble Co nanoparticles on titanium carbides (MXene) for the hydrolysis of ammonia borane by a simple co-reduction route. The synthesized Co nanoparticles with the size of 3.2 nm were monodispersed on MXene surface. The Co NPs/MXene exhibited excellent catalytic performance for the hydrolysis of ammonia borane with TOF value of 39.9 mol mol min at 323 K. The enhanced catalytic property was mainly due to the ultrafine nanoparticles formed on MXene surface. More importantly, the catalytic activity for hydrolysis of ammonia borane did not significantly decrease for up to 6 recycling tests, indicating the remarkable reusability of Co NPs/MXene. Furthermore, this study opens up a new strategy for the preparation of non-noble metallic nanocatalysts with high performance for hydrolysis reactions in practical hydrogen storage systems, thereby fast-tracking the application of ammonia borane in fuel cells.
在此，我们通过简单的共还原路线成功地将非贵金属钴纳米颗粒固定在碳化钛（MXene）上，用于氨硼烷水解。合成的尺寸为3.2 nm的钴纳米颗粒单分散在MXene表面。Co NPs/MXene在323 K下对氨硼烷水解表现出优异的催化性能，TOF值为39.9 mol mol⁻¹ min⁻¹。催化性能的增强主要归因于在MXene表面形成的超细纳米颗粒。更重要的是，在多达6次循环测试中，氨硼烷水解的催化活性没有显著降低，表明Co NPs/MXene具有显著的可重复使用性。此外，本研究为在实际储氢系统中制备用于水解反应的高性能非贵金属纳米催化剂开辟了新策略，从而加速了氨硼烷在燃料电池中的应用。
