Unit NATURAL AND SYNTHETIC NANOSTRUCTURED SYSTEMS
- Course
- Molecular and industrial biotechnology
- Study-unit Code
- GP004113
- Curriculum
- In all curricula
- Teacher
- Catia Clementi
- Teachers
-
- Catia Clementi
- Hours
- 52 ore - Catia Clementi
- CFU
- 6
- Course Regulation
- Coorte 2021
- Offered
- 2021/22
- Learning activities
- Affine/integrativa
- Area
- Attività formative affini o integrative
- Academic discipline
- CHIM/02
- Type of study-unit
- Opzionale (Optional)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- After a brief introduction to nano-structured materials and their classification, the dependence of chemical and physical properties on dimensionality will be addressed highlighting differences respect to bulk systems. Examples of nanostructured natural systems will be then presented. The main part of the course will concern the preparation methods of nanostructured synthetic systems through chemical methods with special reference to nanoparticles and nanorods followed by their characterization and applications.
- Reference texts
- 1. Teaching materials.
2. NANOSTRUCTURES AND NANOMATERIALS - Synthesis, Properties, and Applications (2nd Edition)
© World Scientific Publishing Co. Pte. Ltd.
3. Nanoscience and nanotechnologies: opportunities and uncertainties (The Royal Society & The Royal Academy of Engineering, 2004). - Educational objectives
- This course is the first of the entire degree program completely focused on the study of nanostructured systems. The main aim of the course is to transmit to the student the following knowledges:
- definition of nanostructured system and importance of the dependence of the properties of the size. Differences with bulk systems.
- thermodynamic and kinetic principles related to the chemical synthesis of nanostructured systems.
- potential applications of nanostructured systems
The course will provide the student the following skills:
- identification and optimization of experimental parameters for the synthesis of metal and semiconductor nanoparticles.
- identification of potential applications of nanostructured systems according to their chemical-physical properties.
- identification of parameters to be optimized to increase the performance of a nanostructured system. - Prerequisites
- For a full and easy understanding of the topics of this course it is important to have good basic knowledge of General Chemistry and Physical Chemistry (thermodynamics, kinetics and UV-Visible spectroscopy).
- Teaching methods
- - face to face lectures concerning all the topics of the programm through PowerPoint presentations,
- two laboratory experiences 3-4 hours each in groups of 2-4 students at the photochemistry and photophysics laboratories of the Chemistry Biology and Biotechnology department in via Elce di Sotto 8 - Other information
- The face to face lectures will be held at the location of the Chemistry Biology and Biotechnology Department in via del Giochetto edificio B.
The Laboratory experiments will be carried out at the Laboratory of photochemistry and photophysics of the headquarters of the Department of Chemistry, Biology and Biotechnology of Via Elce di Sotto 8 . - Learning verification modality
- The final exam consists of two tests:
1) oral exam: it consists of an interview long enough to determine and verify the knowledge level, understanding capability and technical skills achieved by the student on the topics covered during the frontal lectures and the analytical techniques used during the laboratory experiences. It will be tested also the capacity of the student to communicate and present the theoretical contents with an appropriate scientific language and the critical sense acquired by the student in dealing with issues concerning the application of nanostructured systems in medical, biological , energetic and environmental field.
2) preparation of laboratory reports: report, consisting of approximately 5-10 pages, to be written in Italian or English and describing the laboratory experiments. In particular, the reports should include a brief introduction explaining the purpose of the experience and related theoretical principles, an experimental section describing the equipment used and the methodologies followed, a section containing the presentation and discussion of the results and a short conclusion section. REPORTS WILL BE DELIVERED AT LEAST THREE DAYS BEFORE THE ORAL EXAM. The reports are aimed to test comprehension by the student of the issues addressed during laboratory experiments and theoretical principles related to them, and finally the ability to organize contents in written form with an appropriate vocabulary.
The final evaluation will take into account both the oral test of the laboratory reports. In particular a separate evaluation expressed in thirtieths will be given to the oral test and laboratory reports and the final evaluation will be made as follows:
80 % of the marks of the oral exam + 20 % of the marks of laboratory reports - Extended program
- A brief introduction to nano-structured materials, definition and classification. Dependence of chemical and physical properties on dimensionality. Quantum confinement.
Nanoparticles:
- Synthesis of colloidal nanoparticles through chemical methods.
- Thermodynamic approach: thermodynamic and kinetic factors related to nucleation and growth processes in homogeneous solutions. Classic theory of nucleation.
- Stabilization of colloidal nanoparticles: steric and electrostatic stabilization (DLVO theory).
- Synthesis of metallic nanoparticles: reduction of metallic salts, electrochemical deposition. Surface Plasmon Resonance.
- Synthesis of nonoxide semiconductor nanoparticles: pyrolysis of organometallic and non organometallic precursor(s). Quantum dots: synthesis and properties. Passivation. Core-shell systems: epitaxial growth.
- Synthesis of semiconductor oxide nanoparticles: sol-gel process.
- - Kinetic approach: synthesis in micelles, aerosols, spray pyrolysis, growth termination, template sinthesis.
Structural characterization, chemistry and physics of nanostructured systems (Scanning electron microscopy (SEM) and transmission electron microscopy (TEM), atomic force microscopy (AFM), UV-Visible spectroscopy)
Applications of nanostructured systems in biomedicine, energy and environment.