Size-dependent solution-mediated phase transformation of piroxicam monohydrate particles

CrystEngComm ◽  
2021 ◽  
Vol 23 (16) ◽  
pp. 2928-2932
Author(s):  
Changlin Yao ◽  
Lei Wang ◽  
Xinyuan Wang ◽  
Xutang Tao
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Size Dependent

The transformation from the piroxicam monohydrate to form I or form II could be achieved precisely by adjusting the particle size itself in the 99% acetone-1% H2O solvent at 31 °C.

Phase transformation and Raman spectra in BaTiO3 nanocrystals

2002 ◽  
Vol 718 ◽  
Author(s):  
Jian Yu ◽  
X. J. Meng ◽  
J.L. Sun ◽  
G.S. Wang ◽  
J.H. Chu
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Low Temperature ◽  
Long Range ◽  
Lattice Expansion ◽  
Inversion Symmetry ◽  
Range Interaction ◽  
Cooperative Phenomena ◽  
Long Range Interaction ◽  
Hydrothermal Methods

AbstractIn this paper, size-induced ferroelectricit yweakening, phase transformation, and anomalous lattice expansion are observed in nanocrystalline BaTiO3 (nc-BaTiO3) deriv ed b y low temperature hydrothermal methods, and they are w ellunderstood using the terms of the long-range interaction and its cooperative phenomena altered by particle size in covalen t ionic nanocrystals. In cubic nc-BaTiO3, five modes centerd at 186, 254, 308, 512 and 716 cm-1 are observed Raman active in cubic nanophase, and they are attributed to local rhombohedral distortion breaking inversion-symmetry in cubic nanophase. The254 and 308 cm-1 modes are significantly affected not only by the concentration of hydroxyl defects, but also their particular configuration. And the 806 cm-1 modes found to be closely associated with OH - absorbed on grain boundaries.

Up-conversion emission and in vitro cytotoxicity characterization of blue emitting, biocompatible SrTiO3 nanoparticles activated with Tm3+ and Yb3+ ions

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 39469-39479 ◽  
Author(s):  
R. Pazik ◽  
A. Zięcina ◽  
B. Poźniak ◽  
M. Malecka ◽  
L. Marciniak ◽  
...  
Keyword(s):  
Particle Size ◽  
Cytotoxic Effect ◽  
In Vitro Cytotoxicity ◽  
Ion Release ◽  
Size Dependent ◽  
U2os Cells

Blue emitting, up-converting NP's of SrTiO3:Tm3+/Yb3+ synthesized using the citric route are biocompatible towards J774.E whereas the cytotoxic effect to U2OS cells is not particle size dependent but most probably is related to Sr2+ ion release.

scholarly journals Size-dependent Phase Transformation and Fracture of ZnO Nanowires

2017 ◽  
Vol 21 ◽  
pp. 86-93
Author(s):  
Jianying He ◽  
Jianyang Wu ◽  
Shijo Nagao ◽  
Lijie Qiao ◽  
Zhiliang Zhang
Keyword(s):  
Phase Transformation ◽  
Zno Nanowires ◽  
Size Dependent

Particle size dependent hysteresis loss in La0.7Ce0.3Fe11.6Si1.4C0.2 first‐order systems

2012 ◽  
Vol 100 (7) ◽  
pp. 072403 ◽  
Author(s):  
F. X. Hu ◽  
L. Chen ◽  
J. Wang ◽  
L. F. Bao ◽  
J. R. Sun ◽  
...  
Keyword(s):  
Particle Size ◽  
Hysteresis Loss ◽  
First Order ◽  
Size Dependent

Spatial, seasonal and particle size dependent variations of PAH contamination in indoor dust and the corresponding human health risk

2019 ◽  
Vol 653 ◽  
pp. 423-430 ◽  
Author(s):  
Zhiguo Cao ◽  
Mengmeng Wang ◽  
Qiaoying Chen ◽  
Chunyou Zhu ◽  
Janye Jie ◽  
...  
Keyword(s):  
Particle Size ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Indoor Dust ◽  
Size Dependent

scholarly journals Speciation and pH- and particle size-dependent solubility of phosphorus in tropical sandy soils

Geoderma ◽  
2022 ◽  
Vol 408 ◽  
pp. 115590
Author(s):  
Apinya Saentho ◽  
Worachart Wisawapipat ◽  
Phrueksa Lawongsa ◽  
Surachet Aramrak ◽  
Nattaporn Prakongkep ◽  
...  
Keyword(s):  
Particle Size ◽  
Sandy Soils ◽  
Size Dependent

Aluminate Green Phosphor with Small Particle Size Used for PDP via Co-Precipitation Method

2011 ◽  
Vol 295-297 ◽  
pp. 890-895
Author(s):  
Yan Dong ◽  
Yang Zhou ◽  
Xue Lin Han ◽  
Wei Jie Gu
Keyword(s):  
Particle Size ◽  
Phase Transformation ◽  
Small Particle ◽  
High Efficiency ◽  
Particle Growth ◽  
Solid State Reaction Method ◽  
Precipitation Method ◽  
Small Particle Size ◽  
Green Phosphor ◽  
Co Precipitation

Mg doped BaAl12O19:Mn2+ phosphor is one of the most efficient green phosphors for PDP. It is difficult to prepare the phosphor both have small particle size (< 3μm) and high luminescence. In the present work, a BaAl12O19:Mn2+ phosphor with small particle size was synthesized by the chemical co-precipitation method. Phase transformation and particle growth process during calcining process were investigated. The nucleation process was also discussed. The results show that, the phase transformation is complicated, the transition phases include BaCO3, γ-Al2O3, BaF2, BaAl2O4 and two phases contain Mn; The BaAl12O19 phase is formed from the reaction between BaAl2O4 phase and γ-Al2O3 phase, no a-Al2O3 phase appears during the entire process; The formation temperature of pure BaAl12O19 phase is 1200°C, which is lower than that in the high-temperature solid state reaction method. High efficiency BaAl12O19:Mn2+ phosphor with small particle size (< 2μm) and hexagonal flaky shape can be prepared by this method.

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