Low-pressure synthesis and characterisation of hydroxyapatite derived from mineralise red algae

Pamela Walsh, Fraser Buchanan, Matthew Dring, Christine Maggs, Steven Bell, Gavin Walker

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


There is a great need to design functional bioactive substitute materials capable of surviving harsh and diverse conditions within the human body. Calcium-phosphate ceramics, in particular hydroxyapatite are well established substitute materials for orthopaedic and dental applications. The aim of this study was to develop a bioceramic from alga origins suitable for bone tissue application. This was achieved by a novel synthesis technique using ambient pressure at a low temperature of 100 degrees C in a highly alkaline environment. The algae was characterised using SEM, BET, XRD and Raman Spectroscopy to determine its physiochemical properties at each stage. The results confirmed the successful conversion of mineralised red alga to hydroxyapatite, by way of this low-pressure hydrothermal process. Furthermore, the synthesised hydroxyapatite maintained the unique micro-porous structure of the original algae, which is considered beneficial in bone repair applications. (C) 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)173-179
Number of pages7
JournalChemical Engineering Journal
Issue number1
Publication statusPublished - 15 Mar 2008

ASJC Scopus subject areas

  • General Chemical Engineering
  • Environmental Engineering


Dive into the research topics of 'Low-pressure synthesis and characterisation of hydroxyapatite derived from mineralise red algae'. Together they form a unique fingerprint.

Cite this