Systematic study of an Fe2O3 stacked homojunction photoelectrochemical photoelectrode

Deposition of FeOOH Layer on Ultrathin Hematite Nanoflakes to Promote Photoelectrochemical Water Splitting

“…Photoelectrochemical (PEC) water splitting is a promising method of hydrogen energy production that utilizes the renewable resource of solar energy to split water into hydrogen and oxygen to achieve zero carbon emissions [ 1 , 2 , 3 , 4 , 5 , 6 ]. Among many photoanodes of metal oxides, hematite (α-Fe 2 O 3 ) stands out among various photoanodes due to its low cost, high chemical stability in alkaline electrolytes, high earth abundance, and appropriate bandgap (~2.2 eV) [ 7 , 8 , 9 , 10 ].…”

“…Therefore, numerous researchers have come up with various approaches to solve those problematic flaws above, such as control morphology [ 18 ], ion doping [ 11 , 14 ], construction of heterojunction/homojunction [ 6 , 15 ], and deposition of cocatalysts [ 19 , 20 ]. Specifically, the use of nanostructures can shorten the transport distance of the holes, so people have prepared hematite nanostructures with different micromorphology, such as nanowire, nanorods, nanotubes, nanocubes, and nanosheets [ 20 , 21 , 22 , 23 , 24 ].…”

Plasmon-enhanced photocatalytic overall water-splitting over Au nanoparticle-decorated CaNb2O6 electrospun nanofibers

“…In general, single-semiconductor NP-stacked nanostructures can provide abundant homogeneous interfaces to facilitate inter-particle continuous charge migration due to the low lattice mismatch between the NPs. 35 This charge migration process would extend the lifetime of photoinduced charge carriers in semiconductors but without losing their intrinsic redox abilities. Notably, inorganic nanofibers (NFs) made by electrospinning possess a 1D ultra-long porous nanostructure composed of compactly packed NPs.…”