Environmental nanotechnology Presented By :- Sumer Pankaj Roll no. :- 195 (T.Y.E.S.) 06/13/2022 1 Environmental Nanotechnology Presented by :- Sumer pankaj Roll no. :- 195 ( T.Y.E.S. )
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05/01/2023 1
Environmental nanotechnology
Presented By :- Sumer Pankaj
Roll no. :- 195(T.Y.E.S.)
Environmental Nanotechnology
Presented by :- Sumer pankaj
Roll no. :- 195( T.Y.E.S. )
05/01/2023 2
Introduction Product characteristics Physical properties Chemical properties Tools used in nanotechnology Applications Case study Negative impacts on nanotechnology
Content
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Introduction Nanotechnology :- It is the
controlled manipulation of matter on a atomic, molecular and supramolecular scale.
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Nanotechnology deals with the development and use of materials or devices ranging between 1 to100 nanometer. This range is known as nanoscale.
All the materials that fall under this scale are nanoparticals or nanocrystals.
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Product characteristics High surface area. High activity. Catalytic activities. Adsorbent. Natural and synthetic. Wide range of applications. Prone to form agglomerate.
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Physical properties Shape, size, specific surface area, and ratio of width and height.
They get stick together.
Have smooth or bumpy surface
They can dissolve easily
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Chemical properties Molecular structure
Composition, including purity and impurities
It can held in solid, liquid or gas
Surface chemistry
Attraction of water molecules or oils and fats
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Tools used in nanotechnology
Transmission electron microscope
Atomic force microscope
Scanning tunneling microscope
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Applications of some nanoparticals in general
Space shuttles Medicines Food Fuel cells and batteries Sports goods
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Applications of nanoparticals in the field of environment
Reducing pollution byproducts
Development of solar cells
Making of wind-mill blades
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Cleaning of organic solvents which pollute ground water
Development of the hydrogen fuel cars
Capturing CO2 in power plant exhausts
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SR NO
MATERIAL NANOMATERIAL USES
1. Concrete Carbon nanotubes
SiO2
Fe2O3
Sufficient reinforcement
Fraction prevention
2. Steel Copper nanoparticals
Improve weld quality
Improve oxidation resistance
CASE STUDYTABLE 1: Application area of nanotechnology for quality
improvements in building resource :-
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SR NO
MATERIAL NANOMATERIAL USES
3. Windows TiO2
SiO2
Self-cleaning ability
Anti-fogging
Prevent heat and ultraviolet infiltration
Resistance against fire
4. Tins/coating TiO2
Silver Nanoparticals
Anti-dirt
Bactria and bug killing ability
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SR NO MATERIAL NANOMATERIAL USES5. Solar cells cover shade/ TiO2
Carbon nanotubes and C60
CdSe quantum dots
More efficient application of solar energy
6. Cement Carbon nanotubes
Polypropylenenanofibers
Improve strength
Resistance against fire
7. Sensors Carbon nanotubes On time structure safety evaluation
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Negative impacts of nanotechnology to environment
If released in the environment then it is difficult to identify its amount in the atmosphere.
It can cause effects to human health and plants.
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“Nanotechnology is a curse or a blessing to human civilization, all depends on how we manage it.” - T. wang.
Thank you…
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