Dihydrogen Phosphate Stabilized Ruthenium(0) Nanoparticles: Efficient Nanocatalyst for The Hydrolysis of Ammonia-Borane at Room Temperature

Materials

Feyyaz Durap²  Salim Caliskan³  Saim Özkar³  Kadir Karakas¹  Mehmet Zahmakiran¹ 

[1] NanoMatCat Research Laboratory, Department of Chemistry, Yüzüncü Yıl University, Van 65080, Turkey; E-Mail:;Department of Chemistry, Dicle University, Diyarbakir 21280, Turkey; E-Mail:;Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey; E-Mails:

关键词: hydrogenphosphate;    ammonia-borane;    hydrolysis;    catalyst;    ruthenium nanoparticles;   

DOI  :  10.3390/ma8074226

来源: mdpi

【 摘 要 】

Intensive efforts have been devoted to the development of new materials for safe and efficient hydrogen storage. Among them, ammonia-borane appears to be a promising candidate due to its high gravimetric hydrogen storage capacity. Ammonia-borane can release hydrogen on hydrolysis in aqueous solution under mild conditions in the presence of a suitable catalyst. Herein, we report the synthesis of ruthenium(0) nanoparticles stabilized by dihydrogenphosphate anions with an average particle size of 2.9 ± 0.9 nm acting as a water-dispersible nanocatalyst in the hydrolysis of ammonia-borane. They provide an initial turnover frequency (TOF) value of 80 min⁻¹ in hydrogen generation from the hydrolysis of ammonia-borane at room temperature. Moreover, the high stability of these ruthenium(0) nanoparticles makes them long-lived and reusable nanocatalysts for the hydrolysis of ammonia-borane. They provide 56,800 total turnovers and retain ~80% of their initial activity even at the fifth catalytic run in the hydrolysis of ammonia-borane at room temperature.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.