Smart Materials: Photocatalytic Self-Cleaning in Building Construction
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Questions and Answers

What is the primary effect of photocatalytic self-cleaning?

  • Improves dirt resistance on surfaces
  • Increases dirt adhesion on surfaces
  • Reduces dirt adhesion on surfaces (correct)
  • Does not affect dirt adhesion on surfaces

What is the impact of photocatalytic self-cleaning on the use of detergents?

  • The use of detergents is eliminated
  • More detergents are required
  • Fewer detergents are required (correct)
  • No impact on detergent use

Which material is usually used as a catalyst in the photocatalytic reaction?

  • Aluminum oxide (Al2O3)
  • Silicon dioxide (SiO2)
  • Zinc oxide (ZnO)
  • Titanium dioxide (TiO2) (correct)

What is required for the function of photocatalytic self-cleaning to work?

<p>UV light, oxygen, and air humidity (B)</p> Signup and view all the answers

What happens to water on conventional tiles before being treated with nano photocatalysis?

<p>Forms droplets that dry leaving behind dirt deposits (C)</p> Signup and view all the answers

What does the coating used in nano photocatalysis look like when applied to glass?

<p>Transparent and invisible (C)</p> Signup and view all the answers

What makes TiO2 a highly reactive catalyst?

<p>Its nanoscalar dimension (C)</p> Signup and view all the answers

Where are photocatalytic self-cleaning surfaces generally more effective?

<p>Outdoors than indoors (B)</p> Signup and view all the answers

What benefits does a photocatalytic self-cleaning glass offer?

<p>Best possible view and self cleaning function (A)</p> Signup and view all the answers

What are the features of Easy-to-Clean (ETC) surfaces?

<p>Smooth, with lower force of surface attraction and well-suited for use in bathrooms (C)</p> Signup and view all the answers

What is the main benefit of the 'Roll-out marble' product?

<p>Impact resistance and fire retardance (B)</p> Signup and view all the answers

In what type of environments is the antibacterial property of surfaces particularly beneficial?

<p>Health care environments (B)</p> Signup and view all the answers

What makes the nanoceramic wall covering particularly robust?

<p>Flexibility and impact resistance (C)</p> Signup and view all the answers

'Silver nanoparticles' are used for manufacturing surfaces specifically designed to be:

<p>Antibacterial (C)</p> Signup and view all the answers

What is the main difference between TiO2 PVC and PVC coated white membranes in weathering tests?

<p>TiO2 PVC remains white, while PVC coated white membranes turn grey. (A)</p> Signup and view all the answers

What can be inferred about the flexibility of ETC ceramic wall coverings?

<p>They can withstand direct exposure to water, such as that in a shower cubicle. (C)</p> Signup and view all the answers

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