LABORATORY FOR INORGANIC MATTER CHEMISTRY

Credits: 
6
Site: 
PARMA
Year of erogation: 
2020/2021
Unit Coordinator: 
Disciplinary Sector: 
General and Inorganic Chemistry
Semester: 
Second semester
Language of instruction: 

italian

Learning outcomes of the course unit

Knowledge: The course provides the student with an opportunity to
address several practical experiences using the approach of the
researcher and therefore no longer that, although very useful, of the
replication of an experimental result.
The course highlights the importance of the observation of the
phenomenon with respect to the replication of the phenomenon.
One of the aims of the course is to teach the students how to establish
the methodology and procedure for running an experiment.
The chemical basis of important phenomena of inorganic chemistry are
explained, focusing onhow to exploit the properties of substances and
materials for the construction of an operating "device".
Understanding: great importance is given to the experimental approach
and how to exploit the properties of individual substances and materials
both to confirm what has been studied

Prerequisites

none

Course contents summary

Laboratory experiments on basic concepts and applications of inorganic
chemistry:
Chemistry of the SolGel process: preparation of siliceous xerogel,
preparation of hybrid organic-inorganic xerogels and their use for the
purification of solutions of metals.
Preparation and stabilization of metal nanoparticles and oxides. Use of
water soluble organic polymers for the separation of nanoparticles from
solution.
Preparation of colored films based on metal oxides. Preparation of
conducting glass based on tin oxide.
Functionalization of a surface of silver with an organic monomolecular
layer.
Ferrofluids based on magnetite.
Construction of a photovoltaic DSSC cell .
Formation of electrochromic films based on iron cyanometalates.

Course contents

1) Inorganic polymers. FUndamentals of the SolGel process;
Precursors: metal alkoxydes, preparation and properties.
Hydrolysis and condensation reactions. Alcogels. Effect of the
reaction parameters on the formation of silica gels and
xerogels. Electronic and steric affects, solvent effect,
concentration, catalysts, drying methods. Gel. Xerogels and
Aerogels properties and their technological uses.
2) Inorganic-Organic Hybrid materials obtained by sol-gel
methods, Classification and description. Preparation of the
precursors, preparation characterization and properties of I-O
materials.
3) Mixed metal oxides by sol-gel methods.
4) Non-hydrolitic condensation.
5) Sensitized photovoltaic cells (Dye sensitized solar cells).
6) Metal and metal oxides nanoparticles, preparation and
properties.
Laboratory:
1) Preparation of silica xerogel in different reaction conditions.
Correlation between their macroscopic properties and their expected
structure.
2) a) preparation of amino functionalized hybrid materials
b) Use of the materials as metal absorbents
3) preparation of mixed-metal oxide films.
4) Preparation of fluorescent xerogels by trapping of organic molecules.
5) Infrared characterization of the obtained materials. Lab training on FTIR.
Acquisition of spectra with different techniques: transmission,
microreflection, HATR.
6) Preparation on gold and silver nanoparticles, their stabilization with
water soluble polymers, cloud point extraction.
7) Preparation of ferrofluidic magnetite stabilizied nanoparticles.
8) Assembling of a dye sensitized solar cell:
coloranti
a) Preparation of Tin oxide conducting glass plates.
b) Preparation of nanocrystalline titanium oxide in anatase phase.
c) Assembling of the cell and measuring of its electromotive force under
solar and artificial light.
9) Preparation of electrocromic thin films based on iron cyanometalates.
10) Preparation of a silver mirror and its functionalization with a
hydrophobic monolayer.

Recommended readings

none

Teaching methods

The classroom lectures led by the teacher are paramount throughout the
course with regard to both the explanation of the basic concepts and the
detailed concepts, that allow the student to carry out and understand the
laboratory experiments on their own.
Practical experiences are made individually.
Discovery oriented teaching. Classroom lectures are mostly held using
blackboard and colored chalk or projection on screen via computer of
diagrams and texts related to the lesson.

Assessment methods and criteria

Correction of a manuscript on laboratory experiments and oral
examination

Other informations

none