Facet-Controlling Agents Free Synthesis of Hematite Crystals with High-Index Planes : Excellent Photodegradation Performance and Mechanism Insight

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Dahu Ding
  • Yang Huang
  • Cuifeng Zhou
  • Zongwen Liu
  • Jichang Ren
  • Jianhai Wang
  • Yuanjian Zhang
  • Zhongfang Lei
  • Zhenya Zhang

Detail(s)

Original languageEnglish
Pages (from-to)142-151
Journal / PublicationACS Applied Materials and Interfaces
Volume8
Issue number1
Online published24 Dec 2015
Publication statusPublished - 13 Jan 2016

Abstract

Hematite (α-Fe2O3) crystals with uniform size and structure are synthesized through very facile one-pot hydrothermal methods without any additive. The as-synthesized sub-micrometer-sized α-Fe2O3 crystals with small surface areas perform superb visible light photodegradation activities, even much better than most other α-Fe2O3 nanostructures with large surface areas. Profound mechanism analyses reveal that the microwave-assisted hydrothermal (Mic-H) synthesized α-Fe2O3 is enclosed by 12 high-index {2-15} facets. The structure and the low unoccupied molecular orbital (LUMO) of the high-index planes result in the excellent photocatalytic activity. This is the first report on the formation of {2-15} plane group of hematite, and the synthesis of the hematite particles with the {2-15} planes is very simple and no any facet-controlling agent is used. This study may pave the way to further performance enhancement and practical applications of the cheap hematite materials.

Research Area(s)

  • facile synthesis method, hematite, high-index facets, photocatalysts, structure analysis

Citation Format(s)

Facet-Controlling Agents Free Synthesis of Hematite Crystals with High-Index Planes: Excellent Photodegradation Performance and Mechanism Insight. / Ding, Dahu; Huang, Yang; Zhou, Cuifeng et al.
In: ACS Applied Materials and Interfaces, Vol. 8, No. 1, 13.01.2016, p. 142-151.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review