Crystallinity Engineering of Hematite Nanorods for High‐Efficiency Photoelectrochemical Water Splitting
نویسندگان
چکیده
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.
منابع مشابه
Surface Engineered Doping of Hematite Nanorod Arrays for Improved Photoelectrochemical Water Splitting
Given the narrow band gap enabling excellent optical absorption, increased charge carrier density and accelerated surface oxidation reaction kinetics become the key points for improved photoelectrochemical performances for water splitting over hematite (α-Fe2O3) photoanodes. In this study, a facile and inexpensive method was demonstrated to develop core/shell structured α-Fe2O3 nanorod arrays. ...
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