Synthesis and spectroscopic identification of nickel and cobalt layered hydroxides and hydroxynitrates.
Synthesis and spectroscopic identification of nickel and cobalt layered hydroxides and hydroxynitrates.
复制标题
镍钴层状氢氧化物和羟基硝酸盐的合成与光谱鉴定。
DOI:
10.1039/d2dt03166c
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Wallbridge SP
中科院分区:
文献类型:
--
作者:
Wallbridge SP
The formation of different nickel and cobalt layered hydroxide phases by a variety of solution and solid-state synthesis methods has been investigated. Initially, preparative methods were refined to generate single-phase products from metal(II) nitrate hexahydrate starting materials which were then characterised by powder X-ray diffraction, vibrational spectroscopy and thermogravimetric analysis. As well as the brucite type β-M(OH)2 and the hydrotalcite-like [M(OH)2−x(H2O)x]x+ alpha-phases (where M = Ni, Co), two different hydroxynitrate phases were isolated with the generic formula M(OH)2−x(NO3)x with x = 0.67 and 1.0 (where M = Ni, Co). The reduction of symmetry of the nitrate anion from D3h to C2v allows the alpha-phases to be distinguished from the two different layered hydroxynitrate phases by both infrared and Raman spectroscopy through the loss of symmetry and concomitant splitting of the degenerate bands. The symmetric N–O stretch enables the two hydroxynitrate phases to be distinguished from one another through the sharp absorption bands at ca. 1000 cm−1 (x = 0.67) and ca. 1050 cm−1 (x = 1.0). The thermogravimetric analysis data of the phases showed key differences between the layered hydroxides, with anhydrous phases having singular weight losses over short temperature ranges and hydrated phases having multiple losses over more extended temperature ranges.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
N. Iyi;Fengxia Geng;T. Sasaki
通讯作者:
T. Sasaki
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
P. Rabu;S. Angelov;P. Legoll;M. Belaiche;M. Drillon
通讯作者:
M. Drillon
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
K. Upadhyaya
通讯作者:
K. Upadhyaya
影响因子:
4.6
作者:
S. Angelov;M. Drillon;E. Zhecheva;R. Stoyanova;M. Belaiche;A. Derory;A. Herr
通讯作者:
S. Angelov;M. Drillon;E. Zhecheva;R. Stoyanova;M. Belaiche;A. Derory;A. Herr
影响因子:
4.6
作者:
Yi Du;D. O′Hare
通讯作者:
D. O′Hare