An effective strategy to overcome the morphology evolution of hematite nanorods under high-temperature activation is presented, via tuning the crystallinity and sintering temperature by substrate modification. It is demonstrated that the as-prepared doping-free hematite nanorods with fine nanostructures obtain a significantly higher photocurrent density of 2.12 mA cm−2 at 1.23 V versus RHE, due to effective charge separation and transfer.
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Wang et al. (2015) studied this question.
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