Abstract
A novel 3D hierarchical nanocomposite of vertically aligned porous FeP nano-wires on reduced graphene oxide is prepared as a demonstration of constructing an efficient hydrogen evolution catalyst. Extension of this nanostructuring strategy to other functional nanocomposites by combining different dimensional nanomaterials is attractive.
Highlights
Hydrogen is being regarded as a clean energy carrier as it is environmentally friendly and possesses high energy density
In order to fully reap the advantages of using well-ordered nanostructure arrays, we selected graphene nanosheets as substrates to synthesize a novel 3D hierarchical nanocomposite consisting of porous FeP nanowire arrays grown vertically on 2D reduced graphene oxide
We first constructed vertically oriented FeO(OH) nanowires supported on graphene oxide (GO) (namely FeO(OH) NWs/GO) which served as the precursor. 3D FeP NWs/reduced graphene oxide (rGO) pseudomorphism was successfully achieved via phosphorization transformation of the FeO(OH) NWs/GO precursor
Summary
Hydrogen is being regarded as a clean energy carrier as it is environmentally friendly and possesses high energy density. This doublet (129.3/130.2 eV) can be assigned to P bonding to Fe.[17] While the high binding energy peak at 134.3 eV could be due to surface PO43− species produced when the catalyst was exposed to air.[18] In addition, the XPS of α-FeO(OH) NWs/rGO are shown in Figure S3 (Supporting Information) for reference.
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