Open AccessCrystallinity Engineering of Hematite Nanorods for High‐Efficiency Photoelectrochemical Water Splitting
Author(s) -
Wang Degao,
Zhang Yuying,
Peng Cheng,
Wang Jianqiang,
Huang Qing,
Su Shao,
Wang Lianhui,
Huang Wei,
Fan Chunhai
Publication year - 2015
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201500005
Subject(s) - hematite , nanorod , crystallinity , photocurrent , materials science , chemical engineering , nanostructure , doping , sintering , substrate (aquarium) , photocatalysis , water splitting , nanotechnology , optoelectronics , chemistry , composite material , metallurgy , biochemistry , engineering , catalysis , oceanography , geology
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.