University of Oulu

Mater. Adv., 2022,3, 7773-7809,

Hydroxyapatite coatings : a critical review on electrodeposition parametric variations influencing crystal facet orientation towards enhanced electrochemical sensing

Saved in:
Author: Dev, Priya Ranjan1; Anand, Chekkottu Parambil1,2; Michael, David Samuvel1;
Organizations: 1Department of Chemistry, Madras Christian College (Autonomous), University of Madras, Chennai-600 059, India
2NMR Research Unit, University of Oulu, Oulu-90014, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 5.1 MB)
Persistent link:
Language: English
Published: Royal Society of Chemistry, 2022
Publish Date: 2023-05-31


Electrochemical deposition presents a promising route toward the fabrication of hydroxyapatite (HAp) coatings attributed to its simplistic approach in the preparation of coatings over complex substrates with control over coating thickness and crystal orientation through variations in electrodeposition parameters. This article aims to consolidate and review the influence of reported parametric determinants associated with electrodeposition thereby providing insight into the outcome of HAp microstructures in terms of Ca/P ratio, crystal growth, and facet orientation of the HAp hexagonal crystal system. Additionally, a discussion on HAp and its composites as viable sensor materials for a myriad of aqueous-based analytes and gaseous molecules is presented. A survey into the application of HAp as a sensor is elaborated, emphasizing the level of sensitivity, selectivity, and sensor response characteristics regarding optimum performance at maximum % sensitivity. Mechanistic insights into the interaction of HAp with analyte species are discussed. Finally, the parameters that include both current density and pH are correlated to determine their synergistic effect as a deciding factor in the growth and preferential orientation of aligned hexagonal HAp crystal domains.

see all

Series: Materials advances
ISSN: 2633-5409
ISSN-E: 2633-5409
ISSN-L: 2633-5409
Volume: 3
Issue: 21
Pages: 7773 - 7809
DOI: 10.1039/d2ma00620k
Type of Publication: A2 Review article in a scientific journal
Field of Science: 116 Chemical sciences
Funding: The authors would like to acknowledge the Science and Engineering Research Board (SERB), India, under the Department of Science and Technology (DST) (Grant No.: EMR/2015/001406).
Copyright information: © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.