研究目的
To synthesize and characterize organic–inorganic photocatalytic hybrid nanocomposites based on titanium oxide nanoparticle and polyaniline decorated with graphene oxide, and evaluate their photocatalytic activity towards degradation of methylene blue and rhodamine B dye under UV-light radiation.
研究成果
The GO/PANI/TiO2 nanocomposites exhibit enhanced photocatalytic efficiency towards the degradation of organic dyes under UV-light radiation, with the highest efficiency observed for the nanocomposite containing 20% TiO2 nanoparticles. These nanocomposites also show potential applications in electronics and optoelectronics due to their semiconducting properties.
研究不足
The study focuses on the photocatalytic degradation under UV-light radiation, and the efficiency under visible light or other conditions is not explored. The scalability and practical application in industrial settings are not discussed.
1：Experimental Design and Method Selection
The synthesis of GO-decorated PANI/TiO2 nanocomposites was performed via in situ chemical oxidative method using ammonium persulphate as an initiator and different weight percentages of TiO2 nanoparticles.
2：Sample Selection and Data Sources
Titanium tetra-isopropoxide, graphene oxide (GO), polyaniline (PANI), ammonium persulfate (APS), and hydrochloric acid were used as materials. The nanocomposites were characterized by UV–vis spectroscopy, FT-IR spectroscopy, XRD, FESEM, and TGA.
3：List of Experimental Equipment and Materials
RIGAKU Ultima IV X-ray diffractometer, Carry 630 FT-IR spectrometer, Cary Eclipse fluorescence spectrometer, Carry 100 UV–visible spectrophotometer, and field emission scanning electron microscope (FESEM).
4：Experimental Procedures and Operational Workflow
The synthesis involved the sol–gel method for TiO2 nanoparticles, oxidative polymerization for PANI, and in situ oxidative polymerization for GO/PANI/TiO2 nanocomposites. The photocatalytic activity was evaluated under short-wavelength ultraviolet light (250 nm).
5：Data Analysis Methods
The electrical conductivity was calculated using bulk resistance (Rb) from I–V measurements. Photocatalytic efficiency was evaluated by monitoring the degradation of methylene blue and rhodamine B dyes under UV-light irradiation.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
