Photocatalytic and biological properties of porous titanium aminophosphate

Abstract

Titanium aminophosphate was synthesized by a simple chemical method and characterized by XRD, DRS–UV, FT-IR, Raman, FE-SEM, elemental mapping with EDX, HRTEM, contact angle and TG–DTA analyses. Ti–O phase of synthesized material was confirmed by X-ray diffraction patterns. Different vibrational bands of metal oxides and aminophosphate were carried out by Raman spectroscopy. The bandgap energy was determined by a diffuse reflectance UV–visible spectroscopy. FE-SEM with EDX were used to analyze the material size, morphology and elements. Hydrophilic studies were carried out by contact angle meter (CA). In the present study, we have evaluated the effective applications of titanium aminophosphate in biological and photocatalytic activities. The titanium aminophosphate functional groups were confirmed (Ti–O and Ti–O–Ti) by FT-IR spectroscopy. N–H groups were confirmed by elemental analyzer (CHN). Human lung adenocarcinoma (A549) cell line was used to examine cytotoxicity of titanium aminophosphate. The synthesized aminophosphate and titanium aminophosphate were tested against two Gram-positive and two Gram-negative bacteria and titanium aminophosphate exhibits higher antibacterial activity. Photocatalytic activity of titanium aminophosphate was determined by malachite green dye degradation process, which was performed using halogen lamp at 500 nm. The synthesized material shows high photocatalytic activity under visible light irradiation.