Nanoparticles: synthesis and applications
| Institution | UNIVERSITY |
| Course | BACHELOR OF SCIENCE... |
| Year | 4th Year |
| Semester | Unknown |
| Posted By | stephen oyake rabilo |
| File Type | |
| Pages | 30 Pages |
| File Size | 1.73 MB |
| Views | 5189 |
| Downloads | 0 |
| Price: |
Buy Now
|
Description
Nanoparticles are defined by the worldwide federation of national standards bodies, the International Organization for Standardization (ISO), as nanoobjects with
all external dimensions in the nanoscale, where the lengths of the longest andshortest axes of nanoobjects do not differ significantly . Though nanoscale is basically ranged from 1 to 100 nm, nanoparticles can be categorized by three size ranges: larger than 500 nm, between 100 and 500 nm, and
between 1 and 100 nm (European Commission, 2010). With respect to the size and the size distribution, nanoparticles may exhibit size-related intensive properties. If they are small enough to confine their electrons, they produce quantum effects and exhibit unexpected properties, for example, gold nanoparticles appear red in solution (see, for instance, Eustis and El-Sayed, 2006), and melt at much lower temperatures than that in slab form (Buffat and Borel, 1976). The high surface-area-to-volume ratio of nanoparticles provides the significant changes in properties related to contact/surface area, such as catalytic (Astruc, 2008),surface-enhanced plasmon resonance (Melaine et al., 2015), etc.
Below is the document preview.
STAGES OF PRENATAL DEVELOPMENT
Trending!
The human life cycle may be said to begin with fertilization and then proceed through prenatal growth and development, birth, postnatal growth and development, maturity, senescence,
and death. While you might think of child development as something that begins during infancy, the prenatal period is also considered an important part of the developmental process. Prenatal development is a time of remarkable change that helps set the stage for future psychological development. The brain develops over the course of the prenatal period, but it will continue to go through more changes during the early years of childhood. The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage, the third through the eighth week is known as the
embryonic period, and the time from the ninth week until birth is known as the fetal period.
7 Pages
7285 Views
0 Downloads
404.95 KB
SCH 405 :ADVANCED ELECTROCHEMISTRY
Trending!
When at least two electrodes are dipped into an electrolyte and connected by an external electrical conductor, an electric current flows and chemical reactions occur in the half cells
111 Pages
6489 Views
0 Downloads
14.67 MB
SCH 405:Further Chemical Kinetics and Electrochemistry
Trending!
Bimolecular reactions – gaseous and liquid states. Quasi equilibrium and steady state approximation theory of reaction rates. Reaction mechanisms.
205 Pages
8036 Views
0 Downloads
21.56 MB
Acid and Base catalysed enolizations, aldols and cyclizations
Trending!
Aldehydes and ketones are in equilibrium with their enol isomers.
18 Pages
5822 Views
0 Downloads
714.36 KB
NUTRIENT CYCLING
Trending!
Nutrients are essential life chemical
elements (About 16 elements). Macronutrients:-Compounds required in great quantities
38 Pages
4987 Views
0 Downloads
651.96 KB
PRIMARY PRODUCTION
Trending!
Sun's energy is harvested by plants and stored as chemical energy through photosynthesis.
55 Pages
6518 Views
0 Downloads
1.35 MB
EAST AFRICAN VEGETATION
Trending!
The diversity of climates and landforms leads to great
diversity of vegetation types in E.A. .Vegetation is influenced by eq uator, relief and altitude especially by Mt. Kenya, Kilimanjaro and Ruwenzori Mountains that are over 5000m high.
31 Pages
6033 Views
0 Downloads
1.07 MB
FRESH AND MARINE WATER COMMUNITIES (AQUATIC COMMUNITIES)
Trending!
Communities associated with freshwater lakes, river valleys and areas that are permanently or temporarily waterlogged. Waterlogging is a result of drainage impediment. These communities are ecotones between dry land and open water. Wetlands are highly productive. They are species rich as they draw them from the adjacent ecosystems.
41 Pages
5679 Views
0 Downloads
1.55 MB
EVOLUTION , VARIATION AND BREEDING MECHANISMS
Trending!
Evolution is the change over time. It leads to diversity , structural complexity and adaptive nature of plants. Organic evolution is a series of transformations in the genetic material of a population over time .The primary cause of evolution is natural selection in
response to the changing environmental interactions
16 Pages
5940 Views
0 Downloads
571.08 KB
SCIENTIFIC NAMING OF PLANTS( NOMENCLATURE)
Trending!
Nomenclature is the correct naming of plants according to specified rules. Plants were known by their common names during the pre-scientific times. The use of common names however are limited to geographical locations or cultures.
19 Pages
6108 Views
0 Downloads
563.1 KB