Facile synthesis of AuPd nanoparticles anchored on TiO2 nanosheets for efficient dehydrogenation of formic acid
| Autor: | Xiulin Fan, Yiqun Jiang, Lixin Chen, Xuanlin Zhang, Chuntao Wang, Yifan Yang, Xuezhang Xiao, Man Chen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Formic acid Nanoparticle Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis law.invention chemistry.chemical_compound Hydrogen storage law General Materials Science Dehydrogenation Calcination Electrical and Electronic Engineering Mechanical Engineering Substrate (chemistry) General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials Hydrogen fuel 0210 nano-technology |
| Zdroj: | Nanotechnology. 29:335402 |
| ISSN: | 1361-6528 0957-4484 |
| DOI: | 10.1088/1361-6528/aac79e |
| Popis: | Safe and efficient hydrogen storage is one of the key technologies for the widespread utilization of hydrogen energy. Formic acid (FA) is regarded as a safe and convenient chemical hydrogen storage material. However, the lack of highly efficient heterogeneous catalysts hinders its practical application. Herein, we presented a facile wet-impregnated deposition method to synthesize ultrafine AuPd alloy nanoparticles anchored on TiO2 nanosheets (AuPd/TiO2 nanosheets) which were used as high efficient catalysts for the dehydrogenation of FA. TiO2 nanosheets were calcined at different temperatures to modify the catalytic activity of catalyst. AuPd/TiO2 nanosheets-400 exhibits the superior activity for catalyzing the FA to release 96% of overall hydrogen content with an initial turnover frequency value of 592 mol H2 mol-1 metal h-1 at 25 °C and low activation energy of 11.8 kJ mol-1. Detailed characterizations show that the superior catalytic performance can be ascribed to the alloy structure of AuPd centers, the phase and crystallinity of TiO2 nanosheets, and the strong electron transfer interaction between AuPd nanoparticles and TiO2 nanosheets substrate. |
| Databáze: | OpenAIRE |
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