Preparation of Porous Hydroxyapatite Using Cetyl Trimethyl Ammonium Bromide as Surfactant for the Removal of Lead Ions from Aquatic Solutions.
Silviu-Adrian PredoiCarmen Steluta CiobanuMikael Motelica-HeinoMariana Carmen ChifiriucMonica Luminita BadeaSimona Liliana IconaruPublished in: Polymers (2021)
In the present study, a new low-cost bioceramic nanocomposite based on porous hydroxyapatite (HAp) and cetyl trimethyl ammonium bromide (CTAB) as surfactant was successfully obtained by a simple chemical co-precipitation. The composition and structure of the HAp-CTAB were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscope (SEM) equipped with an energy dispersive X-ray (EDX) spectrometer, and N2 adsorption/desorption analysis. The capacity of HAp-CTAB nanocomposites to remove the lead ions from aqueous solutions was studied by adsorption batch experiments and proved by Langmuir and Freundlich models. The Pb2+ removal efficiency of HAp-CTAB biocomposite was also confirmed by non-destructive ultrasound studies. The cytotoxicity assays showed that the HAp-CTAB nanocomposites did not induce any significant morphological changes of HeLa cells after 24 h of incubation or other toxic effects. Taken together, our results suggests that the obtained porous HAp-CTAB powder could be used for the decontamination of water polluted with heavy metals, such as Pb2+.
Keyphrases
- electron microscopy
- heavy metals
- aqueous solution
- high resolution
- low cost
- risk assessment
- tissue engineering
- ionic liquid
- reduced graphene oxide
- quantum dots
- induced apoptosis
- magnetic resonance imaging
- metal organic framework
- health risk
- carbon nanotubes
- health risk assessment
- solid phase extraction
- single molecule
- endoplasmic reticulum stress
- lactic acid
- visible light
- high throughput
- computed tomography
- cell proliferation
- dual energy
- contrast enhanced ultrasound
- crystal structure
- case control