Photodeposition of Hydroxyapatite into a Titanium Dioxide Nanotubular Layer Using Ca(EDTA) Complex Decomposition

Abstract

A new photocatalytic hydroxyapatite (HA) synthesis method has been developed. This method is based on the unique ability of the TiO2 photocatalyst to decompose the Ca(EDTA) complex under UV illumination. As a result, released Ca2+ ions react with PO43− ions forming the HA particles. The photocatalytic formation of hydroxyapatite is found to have a fractional order, which may indicate the complex reaction mechanism and the presence of several limiting stages. The TNT-HA samples were studied by XRD, FTIR, SEM, GDOES, and biocompatibility study. High biocompatibility of the surfaces is proven by pre-osteoblast cell growth.

Layered nanomaterials for renewable energy generation and storage

“…71,75,76 Inorganic frameworks of nanocontainers, such as mesoporous silica or nanotubes made of titanium dioxide and gallium zeolite equipped with nanogates with adjustable pores, exhibit higher mechanical strength and are more cost-effective comparing to polymer nanocontainers. 77–79…”

“…71,75,76 Inorganic frameworks of nanocontainers, such as mesoporous silica or nanotubes made of titanium dioxide and gallium zeolite equipped with nanogates with adjustable pores, exhibit higher mechanical strength and are more cost-effective comparing to polymer nanocontainers. [77][78][79] 2.1. Layer-by-layer method -protective coatings Layer-by-layer (LbL) assembly has become a helpful tool for creating functional nanofilms with various applications.…”

Synthesis of Titanium Oxide Nanotubes Loaded with Hydroxyapatite

“…For example, in the work of X. Shen et al [27,28], the loading process of hydroxyapatite involved a multi-stage process, including soaking and washing the samples. Several methods for loading hydroxyapatite use combined methods [29], such as UV treatment of organic precursors of calcium and phosphorus with their decomposition and formation of HAP. Also quite common are methods of electrochemical treatment [30,31] of the TiNT structure in electrolytes containing calcium and phosphorus precursors to fill the nanotubular structure with them.…”