MOFs as an electron-transfer-bridge between a dye photosensitizer and a low cost Ni2P co-catalyst for increased photocatalytic H2 generation
| Autor: | Yupeng Yuan, Youchi Tong, Li Wu, Zhaoming Xue, Lina Gu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Substrate (chemistry) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Catalysis Electron transfer chemistry.chemical_compound Fuel Technology chemistry Photocatalysis Erythrosin B Photosensitizer 0210 nano-technology Benzene Porous medium |
| Zdroj: | Sustainable Energy & Fuels. 2:2502-2506 |
| ISSN: | 2398-4902 |
| DOI: | 10.1039/c8se00168e |
| Popis: | Weak interaction results in inefficient electron transfer from the photoexcited erythrosin B dye photosensitizer to H2 generation co-catalyst Ni2P, thereby leading to low H2 generation. To address this issue, UiO-66 MOFs were used as a suitable medium for enhancing the electron transfer process. The strong π–π interaction between the benzene rings of erythrosin B dye and UiO-66 ensures efficient electron transfer from the photoexcited erythrosin B dye to UiO-66. In addition, UiO-66 can serve as the substrate for growing the Ni2P co-catalyst. As a result, the erythrosin B dye/UiO-66/Ni2P system offers efficient electron transfer from erythrosin B dye to UiO-66, and to Ni2P, thereby resulting in an active H2 generation when compared to the erythrosin B dye and Ni2P system. The erythrosin B dye/UiO-66/Ni2P system with an optimum Ni2P amount of 0.69 wt% exhibits the highest H2 evolution rate of 65 μmol h−1. This value is nearly 5 times higher than that of the reference system without UiO-66 (13.8 μmol h−1). The present results show the great potential of MOFs as a porous medium for enhancing the photocatalytic H2 generation performance of conventional systems containing a photosensitizer and H2 generation co-catalyst. |
| Databáze: | OpenAIRE |
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