Formation and growth mechanism for niobium oxide nanoparticles: Atomistic insight from: In situ X-ray total scattering
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Formation and growth mechanism for niobium oxide nanoparticles : Atomistic insight from: In situ X-ray total scattering. / Aalling-Frederiksen, Olivia; Juelsholt, Mikkel; Anker, Andy S.; Jensen, Kirsten M.Ø.
In: Nanoscale, Vol. 13, No. 17, 07.05.2021, p. 8087-8097.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Formation and growth mechanism for niobium oxide nanoparticles
T2 - Atomistic insight from: In situ X-ray total scattering
AU - Aalling-Frederiksen, Olivia
AU - Juelsholt, Mikkel
AU - Anker, Andy S.
AU - Jensen, Kirsten M.Ø.
N1 - Publisher Copyright: © The Royal Society of Chemistry.
PY - 2021/5/7
Y1 - 2021/5/7
N2 - Understanding the mechanisms for nanoparticle nucleation and growth is crucial for the development of tailormade nanomaterials. Here, we use X-ray total scattering and Pair Distribution Function analysis to follow the formation and growth of niobium oxide nanoparticles. We study the solvothermal synthesis from niobium chloride in benzyl alcohol, and through investigations of the influence of reaction temperature, a formation pathway can be suggested. Upon dissolution of niobium chloride in benzyl alcohol, octahedral [NbCl6-xOx] complexes form through exchange of chloride ligands. Heating of the solution results in polymerization, where larger clusters built from multiple edge-sharing [NbCl6-xOx] octahedra assemble. This leads to the formation of a nucleation cluster with the ReO3 type structure, which grows to form nanoparticles of the Wadsley-Roth type H-Nb2O5 structure, which in the bulk phase usually only forms at high temperature. Upon further growth, structural defects appear, and the presence of shear-planes in the structure appears highly dependent on nanoparticle size. This journal is
AB - Understanding the mechanisms for nanoparticle nucleation and growth is crucial for the development of tailormade nanomaterials. Here, we use X-ray total scattering and Pair Distribution Function analysis to follow the formation and growth of niobium oxide nanoparticles. We study the solvothermal synthesis from niobium chloride in benzyl alcohol, and through investigations of the influence of reaction temperature, a formation pathway can be suggested. Upon dissolution of niobium chloride in benzyl alcohol, octahedral [NbCl6-xOx] complexes form through exchange of chloride ligands. Heating of the solution results in polymerization, where larger clusters built from multiple edge-sharing [NbCl6-xOx] octahedra assemble. This leads to the formation of a nucleation cluster with the ReO3 type structure, which grows to form nanoparticles of the Wadsley-Roth type H-Nb2O5 structure, which in the bulk phase usually only forms at high temperature. Upon further growth, structural defects appear, and the presence of shear-planes in the structure appears highly dependent on nanoparticle size. This journal is
U2 - 10.1039/d0nr08299f
DO - 10.1039/d0nr08299f
M3 - Journal article
C2 - 33956920
AN - SCOPUS:85105408964
VL - 13
SP - 8087
EP - 8097
JO - Nanoscale
JF - Nanoscale
SN - 2040-3364
IS - 17
ER -
ID: 285309305