Issue 21, 2012

Hydroxyapatite/platinum bio-photocatalyst: a biomaterial approach to self-cleaning

Abstract

A bio-inspired approach to photocatalysis with a selection of biologically acceptable building blocks that can be activated by non-toxic visible light is a direction of research for the design of advanced, biomaterials that are able to induce self-cleaning. Here we show that a combination of hydroxyapatite (HAp) with platinum (Pt0 and Ptn+) is suitable to form a novel photocatalytically active material. The so-formed hybrid semiconductor/metallic nanocomposites made of apatite plates with Pt metallic nanoparticles attached to their surface and two different types of surface-adsorbed Pt-complexes are an innovative solution for the design of functional bioactive materials. This material can be activated by exposure to either ultraviolet (UV) or visible (Vis) light. UV activation is allowed by the semiconductor HAp phase, while the activity induced by Vis light is related to complexes adsorbed onto the HAp surface. Pt metallic nanoparticles have the ability to trap electrons, which provides an extension of the material's activity during the period when it is kept in the dark.

Graphical abstract: Hydroxyapatite/platinum bio-photocatalyst: a biomaterial approach to self-cleaning

Article information

Article type
Paper
Submitted
07 Jan 2012
Accepted
20 Mar 2012
First published
17 Apr 2012

J. Mater. Chem., 2012,22, 10571-10580

Hydroxyapatite/platinum bio-photocatalyst: a biomaterial approach to self-cleaning

M. Vukomanović, V. Žunič, M. Otoničar, U. Repnik, B. Turk, S. D. Škapin and D. Suvorov, J. Mater. Chem., 2012, 22, 10571 DOI: 10.1039/C2JM00136E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements