Atmosphere-Assisted FLASH Sintering of Nanometric Potassium Sodium Niobate

Ricardo Serrazina, Luís Pereira, Paula M. Vilarinho, Ana M. Senos

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
30 Downloads (Pure)

Abstract

Dicarboxymethyl cellulose (DCMC) was synthesized and tested for protein adsorption. The prepared polymer was characterized by inductively coupled plasma atomic emission spectrometry (ICP-AES), attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) and solid state nuclear magnetic resonance (ssNMR) to confirm the functionalization of cellulose. This work shows that protein adsorption onto DCMC is charge dependent. The polymer adsorbs positively charged proteins, cytochrome C and lysozyme, with adsorption capacities of 851 and 571 mg g−1, respectively. In both experiments, the adsorption process follows the Langmuir adsorption isotherm. The adsorption kinetics by DCMC is well described by the pseudo second-order model, and adsorption equilibrium was reached within 90 min. Moreover, DCMC was successfully reused for five consecutive adsorption–desorption cycles, without compromising the removal efficiency (98–99%).
Original languageEnglish
Article number3415
Number of pages14
JournalNanomaterials
Volume12
Issue number19
DOIs
Publication statusPublished - 29 Sept 2022

Keywords

  • atmosphere-assisted FLASH sintering (AAFS)
  • low-temperature sintering
  • KNN
  • nanopowders
  • electrical conductivity

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