Tuning the morphology of SrTiO3 nanocubes and their enhanced electrical conductivity

Yulia Eka Putri, Tio Putra Wendari, Annisa Aulia Rahmah, Refinel Refinel, Suhana Mohd Said, Nofrijon Sofyan, Diana Vanda Wellia

Research output: Contribution to journalArticlepeer-review

Abstract

Strontium titanate (SrTiO3) nanocubes were prepared via the solvothermal method in an isopropanol-water system, using cetyltrimethylammonium bromide (CTAB) as a capping agent and tert-butylamine (TBA) as a mineralizer. We found that the presence of TBA produced a synergistic effect in the nucleation and growth of SrTiO3 in the solution, which enabled control over the formation of well-defined cubic particles. X-ray diffraction patterns of SrTiO3, synthesized with the addition of 1 mol of TBA, showed a perovskite structure with high crystallinity. The presence of specific absorption peaks in the fourier-transform infrared (FTIR) spectrum confirmed the existence of CTAB and TBA on the surface of the particles. Transmission electron microscope (TEM) images showed that the sharp-edged cubic particles had narrow size distributions, and selected area electron diffraction (SAED) patterns indicated a high crystallinity. An increase in electrical conductivity values was found in the bulk samples with regular nanocube particles compared to those of non-regular nanocubes.

Original languageEnglish
Pages (from-to)5321-5326
Number of pages6
JournalCeramics International
Volume48
Issue number4
DOIs
Publication statusPublished - 15 Feb 2022

Keywords

  • Capping agent
  • Electrical conductivity
  • Mineralizer
  • Nanocube
  • Perovskite

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