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Preparation and Application of Multiple‐Component‐Doped Keggin Polyoxometalate Microtubes—Towards a Component‐Tunable Hollow Structure
Author(s) -
Shen Yan,
Peng Jun,
Pang Haijun,
Zhang Pengpeng,
Chen Dan,
Chen Changyun,
Zhang Huanqiu,
Meng Cuili,
Su Zhongmin
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201001837
Subject(s) - polyoxometalate , component (thermodynamics) , keggin structure , doping , materials science , chemistry , nanotechnology , chemical engineering , optoelectronics , catalysis , organic chemistry , physics , engineering , thermodynamics
In this paper, the preparation of ascorbic acid (AA)‐doped polyoxometalate (SiW 12 ‐AA) microtubes is described. The SiW 12 ‐AA microtubes convert to heteropoly blue microtubes upon exposure to ammonia gas, which is an ammonia‐triggered solid–solid redox reaction between AA molecules and polyoxometalates, and can possibly be applied to a chemical sensor for detecting ammonia and volatile organic amines. Furthermore, the SiW 12 ‐AA microtubes have been applied to the in situ synthesis of Ag nanoparticles (NPs) through the redox reaction between the AA component and Ag + ions occurring on the surfaces of the SiW 12 ‐AA microtubes to give silver NPs immobilized on polyoxometalate microtubes (Ag@SiW 12 ).