In situ observation of pressure-induced crystallization from amorphous calcium carbonate by time-resolved X-ray diffraction

Koji Maruyama, Hiroyuki Kagi, Toru Inoue, Hiroaki Ohfuji, Toru Yoshino

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Pressure-induced crystallization from amorphous calcium carbonate (ACC) was observed with X-ray diffraction at room temperature. Time-resolved diffraction patterns revealed that calcite and vaterite simultaneously crystallized from ACC, without transformation from vaterite to calcite against Ostwald's step rule. The n values of calcite in Avrami modeling were slightly larger than that of vaterite, which was consistent with the slightly larger grain size of calcite compared with vaterite. Microtexture of the recovered samples suggested that vaterite and calcite crystallized by noticeably different mechanisms.

Original languageEnglish
Pages (from-to)434-436
Number of pages3
JournalChemistry Letters
Volume44
Issue number4
DOIs
Publication statusPublished - 2015
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

Fingerprint Dive into the research topics of 'In situ observation of pressure-induced crystallization from amorphous calcium carbonate by time-resolved X-ray diffraction'. Together they form a unique fingerprint.

Cite this