PHYSICAL CHEMISTRY

PHYSICAL CHEMISTRY

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Code
61932
ACADEMIC YEAR
2018/2019
CREDITS
6 credits during the 1st year of 9017 Materials Science and Engineering (LM-53) GENOVA
SCIENTIFIC DISCIPLINARY SECTOR
CHIM/02
LANGUAGE
Italian
TEACHING LOCATION
GENOVA (Materials Science and Engineering)
semester
1° Semester
Teaching materials

OVERVIEW

The course is divided in two parts, each of 3 CFU .

The two sides correspond to distinct topics:

a) Introduction to colloidal systems from a chemical-physical point of view

b) The X-ray diffraction with practical applications in the powder diffraction

AIMS AND CONTENT

LEARNING OUTCOMES

The first part of the course is devoted to the chemistry of colloids: the aim is to provide the basic physico-chemical concepts needed to understand the phenomena regulating the formation, some properties and the stability of colloidal systems.
The second part of the course is devoted to diffraction techniques: the aim is to consolidate the knowledge on the theoretical principles of diffraction through practical experiences involving the use of specific crystallographic software.

AIMS AND LEARNING OUTCOMES

In the first part, the course aims at providing a basic knowledge of colloidal systems and a general understanding, from a chemical-physical point of view, of some of their relevant properties in different fields of materials science. At the end of the lessons it is expected that the student has learned which physical factors are important to describe a colloidal system and the main characterization techniques. Furthermore, it is expected that the student will be able to use the concepts of thermodynamics (chemical potential, equilibrium, free energy, surface / interfacial energy) in order to understand and analyze some properties and behaviors of colloidal solutions, and their stability.

In the second part, the course aims at using the theoretical concepts of diffraction to analyze and interpret powder diffraction data from a practical point of view. At the end of the lessons the student will be able to correctly interpret and use the International Tables of Crystallography, and will have acquired useful knowledge for the characterization of polycrystalline materials. In particular, the student is expected to be able to interpret simple powder diffraction patterns, identifying the phases present through indexing and calculation of the lattice  parameters; in addition the student should be able to perform a structural refinement with the Rietveld method.

Teaching methods

The teaching course is carried out in a traditional way,  ie through lectures and exercises and/or guided practical activities in the classroom. In general, exercise sessions involve the entire class, while practical activities, being more complex, are proposed to groups of students in different shifts.

SYLLABUS/CONTENT

Part 1: Introduction to the chemistry of colloids and surfaces. Sedimentation and diffusion and the equilibrium between them. Thermodynamics of solutions: osmotic and Donnan equilibria. Surface tension and contact angle. Van der Waals forces.
Part 2: Theory of diffraction. Methods of crystallographic analysis based on different diffraction techniques (RX, neutron, synchrotron). Interpretation of diffraction data from polycrystalline samples: indexing methods, structural refinement with the Rietveld method. Tutorials on some issues through the use of specific software.

RECOMMENDED READING/BIBLIOGRAPHY

In addition to the material (available on Aulaweb) provided by the professor, the following textbooks are recommended:

  • P. C. Hiemenz, R. Rajagopalan, "Principles of colloid and surface science" 3rd ed.

  • P. Atkins, "Chimica fisica"

  • C. Giacovazzo, H.L. Monaco, G. Artioli, D. Viterbo, G. Ferraris, G. Gilli, G. Zanotti,       M. Catti “Fundamentals of Crystallography” Ed. C. Giacovazzo

  • V. K. Pecharsky, P. Y. Zavalij “Fundamentals of powder diffraction and structural    characterization of materials” Kluwer Academic Press

  • International Tables of Crystallography Vols.1-4

TEACHERS AND EXAM BOARD

Ricevimento: Students can contact the teacher at any time by e-mail in order to make an appointment for any problem / information regarding the course

Exam Board

MARCELLA PANI (President)

MASSIMO OTTONELLI

MAURIZIO FERRETTI

MARIA CARNASCIALI

CRISTINA ARTINI

LESSONS

Teaching methods

The teaching course is carried out in a traditional way,  ie through lectures and exercises and/or guided practical activities in the classroom. In general, exercise sessions involve the entire class, while practical activities, being more complex, are proposed to groups of students in different shifts.

LESSONS START

Class starts according to the official beginning of the first semester, as reported in the Manifesto 2017 (general part)

EXAMS

Exam description

The exam is oral, and at least two general questions, one for each part of the course, have to be expected.

The Commission invites the student to present each topic in a systematic and complete way To ensure the effective preparation of the student and the understanding of the subject, during the interview, the student is urged to answer more specific questions, making connections and deductions.

As an alternative test mode, the student can choose to explore one of the topics covered in class, preparing a written report which will then be presented orally during the exam. In this case, the subject must be agreed in advance with the teacher.

Assessment methods

In addition to the student's ability to present a topic in a general framework, his / her reasoning skills and his ability to answer to specific questions are assessed. Passing the exam presupposes the effective acquisition of the theoretical concepts; in particular, the student will demonstrate the understanding  of certain physical and / or chemical-physical laws and the right interpretation of the reason why certain phenomena occur. Moreover, the student's ability to apply theoretical knowledge in real situations or to solve simple problems is positively evaluated.