Morphology-controlled synthesis of Ag nanoparticle decorated poly(o-phenylenediamine) using microfluidics and its application for hydrogen peroxide detection

Lei Wang, Shenghua Ma, Bin Yang, Wenwu Cao, Xiaojun Han

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Shear rate was utilized for the morphology-controlled synthesis of silver nanoparticle decorated poly(o-phenylenediamine) (AgNPs-PoPD) using microfluidics. The morphology of AgNPs-PoPD, such as bundles of belts, twisted fibers, clusters, and microspheres, as well as the composition of AgNPs-PoPD clusters can be easily controlled by changing shear rates, which may provide a new potential method for the property control of materials. The phase diagram of AgNPs-PoPD morphology against reactant flow rate was obtained. The formation mechanism of different morphology of AgNPs-PoPD were analyzed and discussed based on numerical simulations. A H2O2 sensor based on AgNPs-PoPD spheres was fabricated, due to its good catalytic activity toward the reduction of H2O2. The linear detection range is determined to be from 20μM to 180μM, with the detection limit of 5.7μM at a signal-to-noise ratio of 3.

Original languageEnglish (US)
Pages (from-to)102-108
Number of pages7
JournalChemical Engineering Journal
Volume268
DOIs
StatePublished - May 5 2015

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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