Ti

Area of Science:

• Materials Science
• Nanotechnology
• Environmental Chemistry

Background:

• Titanium dioxide (TiO2) based nanocomposites are effective photocatalysts.
• Improving the photodegradation efficiency of organic pollutants like methylene blue (MB) is crucial.
• Nitrogen doping is a known strategy to enhance photocatalytic activity.

Purpose of the Study:

• To develop a novel N-doped TiO2@carbon (N-TiO2@C) nanocomposite.
• To improve the photodegradation performance of TiO2@carbon for MB removal.
• To explore a versatile synthesis route for N-doped metal oxide@carbon composites.

Main Methods:

• A one-pot synthesis using a Ti4+-dopamine/sodium alginate complex.
• Characterization via FT-IR, XRD, XPS, UV-vis DRS, TG-DTA, and SEM-EDS.
• Photocatalytic degradation experiments using MB as a model pollutant.

Main Results:

• The synthesis yielded rutile phase TiO2 within a carbon matrix.
• The N-TiO2@C composite demonstrated high removal efficiency for MB.
• Excellent stability and reusability were confirmed through cycling experiments.

Conclusions:

• A facile and effective method for preparing N-TiO2@C nanocomposites was established.
• The N-TiO2@C composite exhibits superior photocatalytic activity and stability.
• The synthesis strategy is extendable to other N-doped polyvalent metal oxides@carbon composites using various polysaccharides.