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Continuous Crystallization of ZnO Nanoparticles by Spray Flash Evaporation versus Batch Synthesis.

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Title: Continuous Crystallization of ZnO Nanoparticles by Spray Flash Evaporation versus Batch Synthesis.
Authors: Klaumünzer, Martin1, Schlur, Laurent1, Schnell, Fabien1, Spitzer, Denis1
Source: Chemical Engineering & Technology. Aug2015, Vol. 38 Issue 8, p1477-1484. 8p.
Subjects: Surface chemistry, Agglomeration (Materials), Continuous progress programs, Nanoparticles, Biomacromolecules
Abstract: Regarding the scaled up and accelerated processing of ZnO particles, an advanced continuous pilot plant device is used for ZnO nanoparticle production from a zinc acetate dihydrate solution. A qualitative and mechanistic study is presented to show the feasibility of the process with respect to the formation of semiconducting ZnO nanoparticles. In order to evaluate the continuous approach based on the particle characteristics, a laboratory batch synthesis approach is additionally consulted for conventional preparation. In both cases, the precursor solutions are identical, on the basis of ethanol; no alkaline precipitant is added. The main finding in this comparison is the differing surface chemistry of the particles derived from these two approaches which triggers a whole cascade of differences in particle size distribution and spectroscopic and morphological properties of the particles. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering & Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+%26+Technology%22">Chemical Engineering & Technology</searchLink>. Aug2015, Vol. 38 Issue 8, p1477-1484. 8p.
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  Data: Regarding the scaled up and accelerated processing of ZnO particles, an advanced continuous pilot plant device is used for ZnO nanoparticle production from a zinc acetate dihydrate solution. A qualitative and mechanistic study is presented to show the feasibility of the process with respect to the formation of semiconducting ZnO nanoparticles. In order to evaluate the continuous approach based on the particle characteristics, a laboratory batch synthesis approach is additionally consulted for conventional preparation. In both cases, the precursor solutions are identical, on the basis of ethanol; no alkaline precipitant is added. The main finding in this comparison is the differing surface chemistry of the particles derived from these two approaches which triggers a whole cascade of differences in particle size distribution and spectroscopic and morphological properties of the particles. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Chemical Engineering & Technology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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      – SubjectFull: Continuous progress programs
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              Text: Aug2015
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