PMID- 31763468
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2405-8440 (Print)
IS  - 2405-8440 (Electronic)
IS  - 2405-8440 (Linking)
VI  - 5
IP  - 11
DP  - 2019 Nov
TI  - Cobalt chromium-layered double hydroxide, alpha- and beta- Co(OH)(2) and amorphous 
      Cr(OH)(3): synthesis, modification and characterization.
PG  - e02725
LID - 10.1016/j.heliyon.2019.e02725 [doi]
LID - e02725
AB  - Cobalt-chromium layered double hydroxide (CoCr LDH), alpha- and beta- Co(OH)(2) and 
      amorphous Cr(OH)(3) have been synthesized under different reaction conditions. 
      The obtained CoCr LDH was modified by stearic acid (SA) and sodium stearate (SS). 
      The obtained samples have been characterized by X-ray diffraction (XRD), Scanning 
      electron microscope (SEM), Ultraviolet-visible- (UV-Vis), Fourier transform 
      infrared- (FTIR) and Energy-dispersive X-ray- (EDX) spectroscopy. The influence 
      of reaction conditions on product composition, structural and optical properties 
      of the samples have been discussed in detail. The basal spacing of CoCr-LDH 
      increased from 7.366 A to 7.428 A and 25.214A after the intercalation by stearic 
      acid and sodium stearate, respectively. The average particles size by SEM analyze 
      was estimated to be approximately 100-150 nm and 30-50 nm for 
      CoCr-LDH(0.6M(90 degrees C)) and CoCr-LDH(0.6M(90 degrees C))/SS nanostructures, respectively. 
      Mixed hydroxides like alpha- and beta- Co(OH)(2) have been obtained along with LDH at 
      lower pH value (pH  approximately  7). The number of diffraction peaks corresponding to 
      beta-Co(OH)(2) has increased with relatively decreasing of Co(2+) ions in the 
      reaction medium. At high chromium concentrations (Co(2+):Cr(3+) = 1:3 and 1:5), 
      amorphous Cr(OH)(3) were formed in the experiment.
CI  - (c) 2019 The Authors.
FAU - Balayeva, Ofeliya O
AU  - Balayeva OO
AD  - Department of Chemistry, Baku State University, Z. Khalilov str., 23, AZ-1148 
      Baku, Azerbaijan.
FAU - Azizov, Abdulsaid A
AU  - Azizov AA
AD  - Department of Chemistry, Baku State University, Z. Khalilov str., 23, AZ-1148 
      Baku, Azerbaijan.
FAU - Muradov, Mustafa B
AU  - Muradov MB
AD  - Department of Physics, Baku State University, Z. Khalilov str., 23, AZ-1148 Baku, 
      Azerbaijan.
FAU - Alosmanov, Rasim M
AU  - Alosmanov RM
AD  - Department of Chemistry, Baku State University, Z. Khalilov str., 23, AZ-1148 
      Baku, Azerbaijan.
FAU - Eyvazova, Goncha M
AU  - Eyvazova GM
AD  - Department of Physics, Baku State University, Z. Khalilov str., 23, AZ-1148 Baku, 
      Azerbaijan.
FAU - Mammadyarova, Sevinj J
AU  - Mammadyarova SJ
AD  - Department of Physics, Baku State University, Z. Khalilov str., 23, AZ-1148 Baku, 
      Azerbaijan.
LA  - eng
PT  - Journal Article
DEP - 20191114
PL  - England
TA  - Heliyon
JT  - Heliyon
JID - 101672560
PMC - PMC6861585
OTO - NOTNLM
OT  - Basal spacing
OT  - Chemistry
OT  - Functional group
OT  - Layered double hydroxide
OT  - Materials characterization
OT  - Materials processing
OT  - Materials science
OT  - Materials structure
OT  - Materials synthesis
OT  - Nanomaterials
OT  - Reaction proceedings
OT  - Sodium stearate
OT  - Stearic acid
EDAT- 2019/11/26 06:00
MHDA- 2019/11/26 06:01
PMCR- 2019/11/14
CRDT- 2019/11/26 06:00
PHST- 2019/07/11 00:00 [received]
PHST- 2019/09/01 00:00 [revised]
PHST- 2019/10/22 00:00 [accepted]
PHST- 2019/11/26 06:00 [entrez]
PHST- 2019/11/26 06:00 [pubmed]
PHST- 2019/11/26 06:01 [medline]
PHST- 2019/11/14 00:00 [pmc-release]
AID - S2405-8440(19)36385-6 [pii]
AID - e02725 [pii]
AID - 10.1016/j.heliyon.2019.e02725 [doi]
PST - epublish
SO  - Heliyon. 2019 Nov 14;5(11):e02725. doi: 10.1016/j.heliyon.2019.e02725. 
      eCollection 2019 Nov.