Open AccessSynthetic mechanisms of K 2− x Mn 8 O 16 nanorods for removal of acetaldehyde
Author(s) -
Chen Ying,
Shi Jianling,
Liang Yuning
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.2019.0169
Subject(s) - nanorod , cryptomelane , adsorption , acetaldehyde , manganese , scanning electron microscope , hydrothermal circulation , chemical engineering , desorption , materials science , inorganic chemistry , chemistry , nanotechnology , manganese oxide , organic chemistry , ethanol , engineering , composite material
Volatile organic compounds (VOCs) severely threaten the ecological environment and human health even at low concentration because most of them are toxic, mutagenic and carcinogenic. In this study, a hydrothermal synthetic manganese‐based compound, namely cryptomelane manganese oxide (K 2− x Mn 8 O 16 ) nanorod aerogels and a redox product of K 2 S 2 O 8 and MnSO 4 , is chosen as an adsorbent for acetaldehyde removal. Insights were gained into the functions of potassium sulphate (K 2 SO 4 ) and the mechanisms of generating nanorods in the solution phase. The structures, morphologies, specific area and pore size distribution of composites were characterised by N 2 adsorption–desorption isotherms, scanning electron microscopy, and X‐ray diffraction, and the results showed that VOCs removal by adsorption onto K 2− x Mn 8 O 16 nanorod aerogels could be used as a potential method for eliminating VOCs in terms of efficiency.