16 Questions
What is the primary effect of photocatalytic self-cleaning?
Reduces dirt adhesion on surfaces
What is the impact of photocatalytic self-cleaning on the use of detergents?
Fewer detergents are required
Which material is usually used as a catalyst in the photocatalytic reaction?
Titanium dioxide (TiO2)
What is required for the function of photocatalytic self-cleaning to work?
UV light, oxygen, and air humidity
What happens to water on conventional tiles before being treated with nano photocatalysis?
Forms droplets that dry leaving behind dirt deposits
What does the coating used in nano photocatalysis look like when applied to glass?
Transparent and invisible
What makes TiO2 a highly reactive catalyst?
Its nanoscalar dimension
Where are photocatalytic self-cleaning surfaces generally more effective?
Outdoors than indoors
What benefits does a photocatalytic self-cleaning glass offer?
Best possible view and self cleaning function
What are the features of Easy-to-Clean (ETC) surfaces?
Smooth, with lower force of surface attraction and well-suited for use in bathrooms
What is the main benefit of the 'Roll-out marble' product?
Impact resistance and fire retardance
In what type of environments is the antibacterial property of surfaces particularly beneficial?
Health care environments
What makes the nanoceramic wall covering particularly robust?
Flexibility and impact resistance
'Silver nanoparticles' are used for manufacturing surfaces specifically designed to be:
Antibacterial
What is the main difference between TiO2 PVC and PVC coated white membranes in weathering tests?
TiO2 PVC remains white, while PVC coated white membranes turn grey.
What can be inferred about the flexibility of ETC ceramic wall coverings?
They can withstand direct exposure to water, such as that in a shower cubicle.
This quiz covers the concept of photocatalytic self-cleaning, a widely used Nano-function in building construction. It discusses its primary effect of reducing dirt adhesion on surfaces and the implications of this technology. Join Prof. Doaa Abdel Rahman's lecture to test your understanding.
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