English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Stabilized spherical hollow zirconia was fabricated using calcium carbonate as template through a simple precipitation method. The as-prepared products were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) and nitrogen adsorption–desorption isotherms (BET). Adsorption performance of the as-prepared products toward Congo red (CR) aqueous solutions was tested and discussed. Results show that the prepared hollow ZrO 2  microspheres after calcination displayed tetragonal crystalline reflection peaks and copied the morphology of CaCO 3  template very well with a diameter of ∼ 1 μm, and the amount of zirconium n-Butoxide and reaction time play important roles in the formation of special morphology and structure. A possible formation mechanism was proposed according to the observed results. The as-prepared hollow ZrO 2  microspheres after calcination exhibit much better adsorption performance for CR aqueous solutions compared with hollow ZrO 2  microspheres before calcination and ZrO 2  nanoparticles fabricated without template through the same method due to their crystalline structure and large specific surface area.

Fabrication and Characterization of Hollow Zirconia Microspheres Using Calcium Carbonate as Template