Mutton bone derived hydroxyapatite supported TiO2 nanoparticles for sustainable photocatalytic applications

Publication date: Available online 14 December 2017 Source:Journal of Environmental Chemical Engineering Author(s): Narendra Singh, Rajat Chakraborty, Raju Kumar Gupta In this work, hydroxyapatite (HAp) was prepared using low-cost waste mutton bone, having properties such as ion-exchange ability, thermal stability and adsorption capabilities. Mutton bone derived hydroxyapatite (MBHAp) was further utilized as a photocatalyst support to host titanium dioxide (TiO2) nanoparticles. TiO2 nanoparticles were incorporated over MBHAp support by simple sol-gel route. MBHAp support and MBHAp supported TiO2 nanoparticles (MBHAp-T nanoparticles) were characterized using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), etc. Deposited TiO2 nanoparticles were found in anatase phase as confirmed by XRD analysis. Photocatalytic activity of MBHAp-T nanoparticles was demonstrated using methylene blue (MB) dye as a model pollutant and excellent photocatalytic property was observed using MBHAp-T nanoparticles photocatalyst, characterized using UV–vis spectrophotometer. MBHAp-T nanoparticles displayed the stable reusable capability (efficiency decreased by only 8.4% over 10 degradation cycles). Photocatalyst structure and morphology remain unaltered even after 10 consecutive usages. The high stable activity of the pho...
Source: Journal of Environmental Chemical Engineering - Category: Chemistry Source Type: research