脱氢
催化作用
原子层沉积
材料科学
化学工程
铂金
纳米颗粒
多孔性
纳米技术
水解
纳米管
图层(电子)
化学
碳纳米管
有机化学
复合材料
工程类
作者
Jiankang Zhang,Wenlong Yu,Dan Feng,Hao Xu,Yong Qin
标识
DOI:10.1016/j.apcatb.2022.121405
摘要
Synthesizing the catalysts with high activity and stability has always been the research hotspot in the field of heterogeneous catalysis, and the confinement provides a promising route to achieve the goal. Herein we report the porous TiO2 nanotube confined Pt catalysts synthesized by the template-assisted atomic layer deposition (ALD) strategy for hydrolytic dehydrogenation of NH3BH3, in which the ultrafine Pt nanoparticles are decorated on the inner surfaces of the nanotubes with increased Pt-TiO2 interfacial sites compared with the supported Pt/TiO2 counterparts. Combined with the porous structures of the nanotubes with suitable thickness and large open ends, these factors synergistically contribute to the excellent catalytic performances of the confined [email protected]2 catalysts. The present strategy can be extended to prepare the corresponding [email protected]2 bicomponent catalysts exhibiting the further boosted activity with a TOF value of 1055.2 molH2 molPt−1 min−1. This work offers a reliable and general approach for synthesizing the confined catalysts with high efficiency.
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