Nanostructured carbon—Ni(OH)2 composites
- Authors: Zakharov Y.A.1,2, Pugachev V.M.1, Fedorova N.M.1, Dodonov V.G.1, Manina T.S.2,3, Ismagilov Z.R.2
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Affiliations:
- Kemerovo State University
- Institute of Coal Chemistry and Material Science, Siberian Branch of the Russian Academy of Sciences
- Center for Shared Use of the Kemerovo Scientific Center, Siberian Branch of the Russian Academy of Sciences
- Issue: Vol 65, No 1 (2016)
- Pages: 120-124
- Section: Full Articles
- URL: https://journals.rcsi.science/1066-5285/article/view/236839
- DOI: https://doi.org/10.1007/s11172-016-1273-7
- ID: 236839
Cite item
Abstract
Deposition of Ni(OH)2 from an aqueous solution of Ni(N3)2 onto highly porous carbon matrices of two types with different porous structure afforded high-purity nanostructured hydroxide—carbon composites with a regular spatial morphology, which are filled with Ni(OH)2 nanocrystallites (up to 30.9 wt.%) and have high values of specific suface area (up to 1875 m2 g–1) and porosity (up to 2.65 cm3 g–1). Largeand small-angle X-ray diffraction and low-temperature nitrogen absorption on composites showed that nanocrystallites with a brucite-type layered structure form as plates with a thickness of 2—4 nm and a size along the developed face (001) of 25—30 nm in mesopores and on the outer surface of matrices. The degree of mesopore filling with crystallites depends on the mesopore size and the composition of composites; the micropores remain mainly unfilled. The increase in the hydroxide content results in pore size redistribution: in general, the distribution curves shift in favor of smaller mesopore sizes; the portion of pores with sizes comparable with the thickness of filler nanoplates (3—6 nm), as well as the portion of mid-sized pores (20—30 nm) decrease significantly in favor of smaller pores (8—12 nm). Partial blocking (clogging) of pores with filler nanocrystallites was also observed.
About the authors
Yu. A. Zakharov
Kemerovo State University; Institute of Coal Chemistry and Material Science, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: zaharov@kemsu.ru
Russian Federation, 6 ul. Krasnaya, Kemerovo, 650043; 18 prosp. Sovetskii, Kemerovo, 650000
V. M. Pugachev
Kemerovo State University
Email: zaharov@kemsu.ru
Russian Federation, 6 ul. Krasnaya, Kemerovo, 650043
N. M. Fedorova
Kemerovo State University
Email: zaharov@kemsu.ru
Russian Federation, 6 ul. Krasnaya, Kemerovo, 650043
V. G. Dodonov
Kemerovo State University
Email: zaharov@kemsu.ru
Russian Federation, 6 ul. Krasnaya, Kemerovo, 650043
T. S. Manina
Institute of Coal Chemistry and Material Science, Siberian Branch of the Russian Academy of Sciences; Center for Shared Use of the Kemerovo Scientific Center, Siberian Branch of the Russian Academy of Sciences
Email: zaharov@kemsu.ru
Russian Federation, 18 prosp. Sovetskii, Kemerovo, 650000; 21 ul. Rukavishnikova, Kemerovo, 650025
Z. R. Ismagilov
Institute of Coal Chemistry and Material Science, Siberian Branch of the Russian Academy of Sciences
Email: zaharov@kemsu.ru
Russian Federation, 18 prosp. Sovetskii, Kemerovo, 650000