Nanocrystalline ZnO Obtained by the Thermal Decomposition of [Zn(H2O)(O2C5H7)2] in 1-Butanol: Synthesis and Testing as a Sensing Material


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Abstract

The influence of conditions of heat treatment of a solution [Zn(H2O)(O2C5H7)2] in 1-butanol (temperature 125–185°C, treatment times 2, 4, and 6 h) on dispersion and microstructure of the formed nanocrystalline and poorly aggregated zinc oxide, promising component for optoelectronics, including as receptor materials of chemical gas sensors, was investigated. IR spectroscopy showed that the precursor decomposition occurs through the cleavage of the Cβ–Cγ bond of the ligand to form acetone and butyl acetate. It was determined that at the minimum treatment temperature and time (125°C, 2 h) ZnO nanoparticles are nearly spherical, and under hard conditions, rodlike particles are formed. At 125°C (treatment times 4 and 6 h), rodlike particles are organized into dense agglomerates resembling bundles in shape, and at the higher temperatures there is no aggregation of ZnO nanoparticles. The high CO selectivity and sensitivity (4–100 ppm) was revealed for oxide coatings obtained by screen printing using ZnO nanopowders synthesized at 125°C (treatment times 2 and 4 h).

About the authors

A. S. Mokrushin

Kurnakov Institute of General and Inorganic Chemistry

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991

Ph. Yu. Gorobtsov

Kurnakov Institute of General and Inorganic Chemistry

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991

I. S. Vlasov

Moscow Institute of Physics and Technology (State University)

Email: ep_simonenko@mail.ru
Russian Federation, Dolgoprudnyi, Moscow oblast, 141701

I. A. Volkov

Moscow Institute of Physics and Technology (State University)

Email: ep_simonenko@mail.ru
Russian Federation, Dolgoprudnyi, Moscow oblast, 141701

T. Maeder

Moscow Institute of Physics and Technology (State University); École Polytechnique Fédérale de Lausanne

Email: ep_simonenko@mail.ru
Russian Federation, Dolgoprudnyi, Moscow oblast, 141701; Lausanne, CH-1015

A. A. Vasiliev

National Research Center “Kurchatov Institute”

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 123182

V. G. Sevastyanov

Kurnakov Institute of General and Inorganic Chemistry

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991

N. T. Kuznetsov

Kurnakov Institute of General and Inorganic Chemistry

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991

E. P. Simonenko

Kurnakov Institute of General and Inorganic Chemistry; Moscow Institute of Physics and Technology (State University)

Author for correspondence.
Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991; Dolgoprudnyi, Moscow oblast, 141701

N. P. Simonenko

Kurnakov Institute of General and Inorganic Chemistry; Moscow Institute of Physics and Technology (State University)

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991; Dolgoprudnyi, Moscow oblast, 141701

I. A. Nagornov

Kurnakov Institute of General and Inorganic Chemistry; Dmitry Mendeleev University of Chemical Technology of Russia

Email: ep_simonenko@mail.ru
Russian Federation, Moscow, 119991; Miusskaya sq. 9, Moscow, 125047

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