TiO₂-based Photocatalytic Cementitious Composites: Materials, Properties, Influential Parameters, and Assessment...

Area of Science:

• Materials Science
• Environmental Science
• Chemical Engineering

Background:

• Heterogeneous photocatalysis using semiconductor particles in cement-based materials is gaining traction for improving building aesthetics and reducing environmental pollution.
• Titanium dioxide (TiO2) is a preferred semiconductor due to its cost-effectiveness, stability, and non-toxicity.
• Incorporating TiO2 into cementitious composites can significantly lower urban pollutant concentrations, such as nitrogen oxides (NOx).

Purpose of the Study:

• To provide a comprehensive review of TiO2-based photocatalysis in cement technology.
• To discuss the practical applications of photocatalytic cement.
• To identify research gaps for advancing cementitious materials with photocatalytic properties.

Main Methods:

• Literature review of existing research on TiO2 photocatalysis in cement.
• Analysis of studies on the application of TiO2 in cementitious composites.
• Synthesis of findings on self-cleaning, antimicrobial, and air-purifying properties.

Main Results:

• TiO2-based cementitious materials demonstrate effectiveness in self-cleaning, antimicrobial functions, and air purification.
• Applications include self-cleaning buildings, antimicrobial surfaces, and air-purifying structures.
• TiO2's properties make it suitable for integration into construction materials.

Conclusions:

• TiO2-based photocatalysis offers a promising approach for developing advanced cementitious materials.
• Further research is needed to address existing gaps and optimize performance.
• Advancements in this field can lead to more sustainable and healthier built environments.