Analytical Chemistry Laboratory

 | Post date: 2020/07/12 | 

 •Analytical Chemistry Laboratory

Head: Associate Prof. Leila Naji
Email: Leilanajiaut.ac.ir
Address: seventh floor, Department of Chemistry, AUT
Telephone: +98(21) 64545807


In this laboratory, various projects are carried out in the field of soft electromechanical activators (artificial muscles), membrane separation processes, polymer solar cells, polymer electrolytes for lithium ion batteries, fuel cell electrocatalyst, electrode design and electrolytes for supercapacitors. Accordingly, this laboratory is equipped with general and specialized devices for evaluating materials and devices designed. 

Research Fields:
In the field of polymer solar cells:
-    Design and synthesis of new material with superior features for use in the anode, active layer and cathode of polymer solar cells
-    Optimizing the properties of common materials in the design of polymer solar cells using physical and chemical methods
-    Provide new structures and designs for making polymer solar cells
Achievements so far: 
     Synthesis of pure and doped titanium nanoparticles with intermediate elements,
    Increasing the light absorption of the polymer in the active layer by composing the polymer with synthetic inorganic nanoparticles,
    Polymer solar cell design based on inorganic-polymer nanocomposites designed and the use of synthetic nanoparticles as electron acceptors to reduce the cost of designed cells,
    Improving the light absorption of the active layer by composing the conductive polymer with organic and inorganic light absorbing compounds,
    Synthesis and enhancement of solubility properties of cavity transfer polymers to improve the performance of solar cells,
     Control of parameters affecting the physical properties of layered polymers as the active layer and cavity transporter to improve the performance of solar cells,
    Synthesis of graphene oxide as a cavity transfer layer,
    Synthesis of graphene as an electron transfer species in the active layer and an alternative for ITO in the photo anode,
    Synthesis of graphene sheets decorated with nanoparticles of intermediate elements and control of its optimal coating layer for photo anode design,
    Improving the electrical conductivity of polyaniline conducting polymer as a substitute polymer for anodic materials using aniline polymerization in the presence of graphene plates,
    Increasing the solubility of graphene in aqueous phases in order to facilitate its physical deposition on electrode substrates by chemical bonding of hydrophilic agents on graphene plates,
    Increasing the solubility and electrical conductivity of polyaniline polymers by compositing it with graphene plates functionalized by one-situ polymerization,
    Composing transfer layer of the polymer cavity with graphene oxide to facilitate the cavity transfer and increase the solubility and improve the quality of its coating layer,
    Synthesis of silver nanowires and control of their dimensions by changing the synthesis parameters as electrode materials,
    Controlling the dimensions of silver nanowires and investigating its effect on the optical and electrical properties of photo anodes and photocathodes,
    Synthesis of photothermal graphene and its nanocomposites with metal nanoparticles,

In the field of artificial muscles:
-    Design and preparation of polymer electrolytes based on smart polymers,
-    Synthesis and design of metal and non-metal electrodes,
-    Replacement of common solvents with new solvents,
-    Composition of electrode materials and polymer electrolytes with inorganic and organic compounds,
Achievements so far:
    Preparation of artificial muscle based on electrically active polymer of Nafion and platinum electrodes,
    Use of EMIMBF4 ionic liquid in the design of artificial muscles to enhance electromechanical performance and cyclicity,
    Investigation of the effect of different salts on the structural and electrochemical properties of base ion-exchanging polymers,
    Synthesis of graphene oxide and graphene sulfone and study of its effect on electrochemical and electromechanical properties of the resulting artificial muscle,
    Electrochemical synthesis of polypyrrole on flexible substrate as electrode material,
    Electrochemical synthesis of poly ethylene dioxythiophene as an electrode material in the design of metal-free artificial muscles,
    Use of carbon nanostructures as electrode material in the design of artificial muscles,
    Composition of polypyrrole with graphene oxide reduced by electrochemical process as electrode material,

In the field of membrane separation processes:
-    Synthesis and evaluation of asymmetric membranes for gas separation processes,
-    Synthesis and evaluation of composite thin film membranes for gas separation processes,
-    Synthesis of thin film membranes of asymmetric polymer for water desalination processes,
-    Preparation and evaluation of carbon-based thin film membranes for membrane separation processes,
-    Preparation of thin film membranes of polymer /carbon composite for separation of inorganic and organic species,

Achievements so far:
    Investigation of the effect of amine-functionalized carbon nanotubes on the permeability and selectivity of polyamide-6-b-ethylene oxide membrane (PEBAX) for gas separation,
    Fabrication and optimization of polyamide-6-b-ethylene oxide (SiO2) PEBAX nanocomposite membrane for gas separation,
    Fabrication of composite thin film membranes from polyamide/graphene sulfone oxide for water desalination,
    Fabrication of carbon thin film membranes composite with silane compounds for isolation of biological species,

In the field of lithium ion batteries:
-    Electrochemical preparation and evaluation of electrolyte gels of polymers,
-    Electrochemical preparation and evaluation of polymer electrolytes gel composed of inorganic nanoparticles,
-    Improving the gel transfer properties of common polymer electrolytes by mixing with suitable polymers,
-    Provide lithium-ion batteries and improve the charging and discharging properties of polymer batteries,
-    Flexible battery design
Achievements so far:
    Preparation of polymer electrolyte gel based on PMMA and PVDF with high conductivity,
    Improvement of transfer number of lithium ion in PMMA base polymer electrolytes by adding SiO2, CeO2, TiO2 nanoparticles,
    Improvement of ionic conductivity and electrochemical properties of PMMA polymer using Nafion ion exchange polymer,

In the field of fuel cells:
-    Preparation and electrochemical evaluation of catalyst and catalyst base,
-    Improving the properties of ion exchange electrolytes by composite using inorganic nanoparticles,
-    Making membrane electrode assembly,
-    Construction and evaluation of fuel cells,
Achievements so far:
    Fabrication of polymer nanocomposite membranes and inorganic nanoparticles such as sulfonated silica and Fe2TiO5,
    Investigation of physical and electrochemical properties of nanocomposite membranes for polymer membrane fuel cells,
    Synthesis of graphene oxide and oxysulfone graphene as a catalyst base,
    Preparation of membrane electrode assembly by electrode-free plating method,
    Synthesis of nitrogen-doped graphene oxide and preparation of Pt/ Ni core-shell structures,
    Nafion nanocomposite membranes with graphene sulfone oxide and precipitation of electrode-free nanoparticles by electrode-free plating method.

In the field of supercapacitors:
-    Electrochemical preparation and evaluation of carbon base electrode and electrolyte
-    Improving the properties of common electrolytes using organic and inorganic compounds
-    Supercapacitor fabrication and their electrochemical evaluation
Achievements so far:
    Synthesis of three-dimensional graphene by chemical and electrochemical methods
    Growth of spinel structures on three-dimensional graphene and their electrochemical evaluation
    Growth of spinel structures on nickel foam
    Preparation of carbon based supercapacitors and special examination of their charge and discharge and their cyclicity



Analytical Chemistry Laboratory Equipment:
    Equipment for electromechanical evaluation of ion activators based on electrically active polymers (synthetic muscles)
•    Sample holder
•    DC power supply
•    AC power supply
•    Oscilloscope

    Equipment for electrochemical evaluation of materials
•    Potentiostat / galvanostat device
•    Potentiostat / galvanostat with EIS module
•    Ag / AgCl reference electrode
•    Platinum counter electrode
•    Glass carbon working electrode
•    Electrochemical cell

    Equipment for preparation and testing of lithium-ion batteries and supercapacitors
•    Two electrode cell test
•    Globox
•    Autoclave

    Equipment for preparation and evaluation of polymer solar cells
•    Spin Coating
•    Sun simulator
•    Multimeter
•    Current-voltage measurement

    Equipment for preparation and evaluation of the performance of polymer membranes in the water treatment process
•    Dead-end cell equipped with a magnetic stirrer to perform membrane processes
•    Nitrogen gas capsule

    General equipment
•    Oven 
•    pH meter
•    Conductometer
•    Heater
•    Magnetic stirrer
•    Ultrasonic bath

•    Decomposition scales

  




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