Open AccessControlled synthesis of octahedral jarosite
Author(s) -
Li Zhongchun,
Xu Xia,
Wang Zhixian,
Lv Hongying,
He Xianghong,
Wang Liangbiao
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5376
Subject(s) - jarosite , octahedron , crystallography , transmission electron microscopy , materials science , hydrothermal circulation , scanning electron microscope , microstructure , selected area diffraction , hydrothermal synthesis , redox , diffraction , chemistry , inorganic chemistry , crystal structure , metallurgy , nanotechnology , chemical engineering , physics , optics , composite material , engineering
Octahedral jarosite was successfully prepared without extra template using a novel hydrothermal route based on the redox reaction between KMnO 4 and (NH4) 2 Fe(SO 4 ) 2 ·6H 2 O. The mass ratio of (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O/KMnO 4 , reaction time, and reaction temperature play key roles in forming octahedral crystals. The chemical composition and microstructure of as‐prepared octahedral jarosite were characterised by X‐ray diffraction, scanning electron microscopy, energy dispersive spectrum, high‐resolution transmission electron microscopy, and selective area electron diffraction. The formation mechanism of octahedral jarosite was discussed preliminarily.