In recent years, pollution of soil, water and air has become a
serious problem not only in Vietnam but also in many parts of the
world in which the water pollution is more serious problem.
“Water blooming” is the development of microalgae outbreak,
especially cyanobacteria in fresh water bodies and often cause the
harmful effects on the environment such as: the water turbidity and
pH are increase, the levels of dissolved oxygen is reduce due to the
respiration or degradation of algae biomass and especially, the fact
that most cyanobacteria produce the toxicity high. The preventing
and minimizing the development of cyanobacteria is an important
environmental issue that need to pay the attention. The many
methods have been used such as: chemistry, mechanics, biology,
etc., but they are ineffective and expensive, affecting ecosystem
and conducting is difficult, especially in large water bodies.
Therefore, the search and development of new effective solutions
without secondary pollution and friendly with the environment are
increasingly focused research. Nanotechnology is the technology
relating to the synthesis and application of materials with
nanometer sizes (nm). At nanoscale, the material has many
advantage features such as: size is smaller than 100 nm, larger
surface to volume ratio, crystalline structure, high reactivity
potential, creating the effect of resonance Plasmon surface; high
adhesion potential and the nanomaterial was applied in various
fields such as: medical, cosmetics, electronics, chemical catalyst,
environment. For the above reasons, the thesis is proposed as:
“Synthesis of silver, copper, iron nanoparticles and their
applications in controlling cyanobacterial blooms in the fresh
water body” was selected to researched.