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Double‐Shelled Mn 2 O 3 Hollow Spheres and Their Application in Water Treatment
Author(s) -
Cao Jie,
Zhu Yongchun,
Shi Liang,
Zhu Lingling,
Bao Keyan,
Liu Shuzhen,
Qian Yitai
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200901116
Subject(s) - chemistry , spheres , thermal treatment , nanoparticle , nanopore , chemical engineering , template , microsphere , nanotechnology , etching (microfabrication) , composite material , materials science , organic chemistry , physics , layer (electronics) , astronomy , engineering
Double‐shelled Mn 2 O 3 hollow spheres have been successfully prepared on a large scale by using core‐shell‐structured MnCO 3 microspheres as sacrificial templates. This new method is based on an inward oxidation/etching treatment and sequential heat treatment in air. The as‐prepared double‐shelled Mn 2 O 3 hollow spheres consist of small nanoparticles with a size of ca. 50 nm, and there are many nanopores among the particles. As the double‐shelled Mn 2 O 3 hollow spheres were employed in water treatment, they could remove about 86 % of phenol without any other additives.