Investigation of the crystallization kinetics of Zn(Met)(AcO)2·H2O in mixed solution of water and acetone by microcalorimetry

Ren, Yulin; Gao, Shengli; Chen, Sanping; Jiao, Baojuan; Hu, Rong‐Zu; Shi, Qi‐Zhen

doi:10.1002/cjoc.20040221009

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…The calorimetric system was accurate (accuracy 0.02%) and reliable (precision 0.3%). The Cd(NO 3 ) 2 and Na 2 MoO 4 microemulsions were placed in a stainless steel sample cell in separate 15-mL containers [31]. The Na 2 MoO 4 microemulsion (1.0 mL) was placed in a small glass tube above the Cd(NO 3 ) 2 microemulsion (1.0 mL), which was in a larger glass tube.…”

Section: In Situ Microcalorimetric Methods and Synthesismentioning

confidence: 99%

Kinetic investigation of in situ growth of CdMoO4 nano-octahedra

Jiang

Fan

et al. 2011

Chin. Sci. Bull.

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CdMoO 4 nano-octahedra were grown in situ at room temperature by reverse-microemulsion. Energy evolution from this growth process was monitored using microcalorimetry. The microcalorimetric heat flow (MCHF) curve showed a characteristic endothermic peak for the initial reaction, and double discontinuous exothermic peaks for the subsequent crystal growth. Combined with complementary characterization techniques, the evolution of morphology and size of the CdMoO 4 nano-octahedra were correlated with the MCHF peaks. Calculations based on the microcalorimetric results at 298.15 K provided rate constants of 7.56×10 -5 s -1 for the reaction and nucleation process and 1.59×10 -4 s -1 for the crystallization process. Over the past decade, attention has focused on the preparation of nanomaterials with controlled sizes and morphologies [1-3], which are important in determining the properties of the materials. Unfortunately, real time growth mechanisms for this controlled synthesis remain unclear. Consequently, clarification of the aggregation pathways and thermodynamics of in situ growth of nanoparticles is critical. Several methods have been used to explore the aggregation pathways during crystal growth, such as classical crystallization kinetic theory [4], in situ electron microscopy [5][6][7], scanning tunneling microscopy [8,9], in situ ellipsometry [10], in situ synchrotron X-ray absorption [11], and quartz crystal microbalance in combination with in situ X-ray photoelectron spectroscopy [12]. However, these methods cannot be used to evaluate instantaneous information from the non-equilibrium growth of nanomaterials. Moreover, they are expensive, carried out under harsh conditions, lack universality, and do not provide information on energetics. Thus, alternative methods are required to determine the energy evolution during synthesis of nanomaterials. This information could be used to effectively control the *Corresponding author (email: huangzyhappy@163.com) size distribution, structure and growth directions of nanoparticles.Calorimetry is an effective method to measure the changes in heat associated with crystal growth [13,14]. The major advantage of this method is that the system will not be disturbed during measurements. Additionally, continuous and accurate recordings can be provided on energy evolution in the system. In situ microcalorimetry has been used to systematically study the thermochemical and thermokinetic properties of the synthesis process and crystal growth of rare-earth complexes [15][16][17]. This method has also been applied to the zeolite and silica system, and used to delineate the relationship between thermodynamic factors and changes in the solution chemistry and interface properties [18][19][20][21][22][23][24]. The formation mechanism of MCM-41 mesoporous silica was also investigated using microcalorimetry [25]. In addition, microcalorimetry has been used to determine standard molar enthalpies [26] and the surface and interface enthalpies [27]. It is therefore reasonable to apply calorime...

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Section: In Situ Microcalorimetric Methods and Synthesismentioning

confidence: 99%

Kinetic investigation of in situ growth of CdMoO4 nano-octahedra

Jiang

Fan

et al. 2011

Chin. Sci. Bull.

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“…Theaccuracywas0.02%andtheprecisionwas0.3%,whichin鄄 dicatedthatthecalorimetricsystemwasaccurateandreliable. ThesynthesisreagentsofCaCl 2 aqueoussolutionandNa 2 MoO 4 aqueoussolutionwereputintothestainlesssteelsamplecell withthecontainerof15mL [26] ,separately. 3a).…”

Section: Methodsmentioning

confidence: 99%

In situ Microcalorimetry Insight into the Growth of CaMoO4 Microcrystallites

Mi¹,

Huang²,

Jun-Ying³

et al. 2009

Acta Physico-Chimica Sinica

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“…Microcalorimeter was calibrated first using the Joule effect. Calorimetric system was accurate (accuracy 0.02%) and reliable (precision 0.3%) [48,49]. The chrysin solution (1.0 mL, 1 × 10 -4 mol•L -1 ) was placed in a small glass tube above the SA (1.0 mL, 2.0 × 10 -4 mol•L -1 ), which was in a larger glass tube.…”

Section: Determination Of Thermodynamic Parameters By Microcalorimetermentioning

confidence: 99%

Molecular Docking and Reaction Kinetic Studies of Chrysin Binding to Serum Albumin

Jiang

Zhao

Jin

et al. 2014

Natural Product Communications

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The binding properties of chrysin with serum albumin (SA) were investigated under physiological conditions by calorimetry, circular dichroism (CD) spectroscopy, and molecular modeling. Based on the thermodynamic data, molar reaction enthalpy, reaction order (n) and the rate constant (k) were calculated. The results of CD spectroscopy showed that chrysin could bind to SA and the conformation of SA did not have any high-ordered structural change. Computational mapping revealed chrysin binding to the subdomain IB in SA. The chrysin-serum albumin complex was stabilized by hydrophobic force and hydrogen bonding and the reaction was a spontaneous process.

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Investigation of the crystallization kinetics of Zn(Met)(AcO)₂·H₂O in mixed solution of water and acetone by microcalorimetry

Cited by 6 publications

References 5 publications

Kinetic investigation of in situ growth of CdMoO4 nano-octahedra

Kinetic investigation of in situ growth of CdMoO4 nano-octahedra

<em>In situ</em> Microcalorimetry Insight into the Growth of CaMoO<sub>4</sub> Microcrystallites

Molecular Docking and Reaction Kinetic Studies of Chrysin Binding to Serum Albumin

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