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MOFs as electron-transfer-bridge for dye photosensitizer and low cost Ni2P co-catalyst to increased photocatalytic H2 generation

Abstract

The weak interaction results in inefficient electron transfer from photoexcited Erythrosin B dye photosensitizer to H2 generation co-catalyst Ni2P, thereby leading to low H2 generation. To address this issue, UiO-66 MOFs was used as the suitable medium for enhancing the electron transfer process. The strong -interaction between the benzene rings in Erythrosin B dye and UiO-66 ensures the efficient electron transfer from photoexcited Erythrosin B dye to UiO-66. In addition, the UiO-66 can serve as the substrate for growing Ni2P co-catalysts. As a result, Erythrosin B dye/UiO-66/Ni2P system offers an efficient electrons transfer from Erythrosin B dye to UiO-66, and to Ni2P, thereby resulting in an active H2 generation when compared to Erythrosin B dye and Ni2P system. The Erythrosin B dye/UiO-66/Ni2P system with an optimum Ni2P amount of 0.69 wt% endows the highest H2 evolution rate of 65 μmol h-1. This value is near 5 times higher than the reference system without UiO-66 presence (13.8 μmol h-1). The present results show the great potential of MOFs as the porous medium for enhancing photocatalytic H2 generation of conventional systems containing photosensitizer and H2 generation co-catalyst.

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Publication details

The article was received on 09 Apr 2018, accepted on 14 May 2018 and first published on 14 May 2018


Article type: Paper
DOI: 10.1039/C8SE00168E
Citation: Sustainable Energy Fuels, 2018, Accepted Manuscript
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    MOFs as electron-transfer-bridge for dye photosensitizer and low cost Ni2P co-catalyst to increased photocatalytic H2 generation

    Y. Yuan, L. Wu, Y. Tong, L. Gu and Z. Xue, Sustainable Energy Fuels, 2018, Accepted Manuscript , DOI: 10.1039/C8SE00168E

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