Although nanoparticles, nanorods, and nanosheets of α-FeO on graphene sheets have been synthesized, it remains a challenge to grow 3D α-FeO nanomaterials with more sophisticated compositions and structures on the graphene sheets. Herein, we demonstrate a facile solvothermal route under controlled conditions to successfully fabricate 3D α-FeO hollow meso-microspheres on the graphene sheets (α-FeO/RGO HMM). Attributed to the combination of the catalytic features of α-FeO hollow meso-microspheres and the high conductivity of graphene, α-FeO/RGO HMM exhibited promising electrocatalytic performance as a counter electrode in dye-sensitized solar cells (DSSCs). The DSSCs fabricated with α-FeO HMM displayed high power conversion efficiency of 7.28%, which is comparable with that of Pt (7.71%).
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9069592 | PMC |
| http://dx.doi.org/10.1039/c9ra02586c | DOI Listing |
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