Jump to main content
Jump to site search

Issue 8, 2015
Previous Article Next Article

Efficient synthesis of size-controlled open-framework nanoparticles fabricated with a micro-mixer: route to the improvement of Cs adsorption performance

Author affiliations

Abstract

We demonstrated an efficient method for size-controlled nanoparticles of the open framework coordination polymer potassium copper hexacyanoferrate (KCuHCF) using only aqueous solutions of the raw materials and a Y-type micro-mixer. Despite the high viscosity of the synthesized NP slurry, the micro-mixer provides continuous synthesis without clogging for a few hours with a high flow rate of 100 mL min−1, i.e. a linear velocity of 94 m s−1. The crystallite size, evaluated by the Scherrer equation using X-ray diffraction measurements, can be controlled by changing the flow rate. With the highest flow rate of 100 mL min−1, the smallest NPs with a size of ∼11 nm were obtained, less than half of the NP size obtained using the batch method. By downsizing the nanoparticles (NPs) using the micro-mixer synthesis, the Cs adsorption performance of potassium copper hexacyanoferrate (KCuHCF) was drastically improved. The KCuHCF with the smallest primary particles showed the fastest Cs adsorption: 1.4 times in the saturated capacity, 3.9 times in the distribution coefficient, and 7.7 times in the rate constant for the pseudo-second order adsorption theory, compared with the batch-synthesized sample.

Graphical abstract: Efficient synthesis of size-controlled open-framework nanoparticles fabricated with a micro-mixer: route to the improvement of Cs adsorption performance

Back to tab navigation

Publication details

The article was received on 08 Apr 2015, accepted on 03 Jun 2015 and first published on 04 Jun 2015


Article type: Paper
DOI: 10.1039/C5GC00757G
Citation: Green Chem., 2015,17, 4228-4233

  •   Request permissions

    Efficient synthesis of size-controlled open-framework nanoparticles fabricated with a micro-mixer: route to the improvement of Cs adsorption performance

    A. Takahashi, N. Minami, H. Tanaka, K. Sue, K. Minami, D. Parajuli, K. Lee, S. Ohkoshi, M. Kurihara and T. Kawamoto, Green Chem., 2015, 17, 4228
    DOI: 10.1039/C5GC00757G

Search articles by author

Spotlight

Advertisements