A method for producing phthalocyanine graphene hybrid materials

A method for producing a phythalocyanine-graphene hybrid material in one step in which an electrochemical cyclic voltammetry system comprising a potentiostat allowing the system to be controlled by applying different potentials, a computer controlling the software in which the data are recorded and processed, a graphite working electrode functioning as an anode, a reference electrode controlling the potential difference on the graphite working electrode, a counter electrode functioning as a cathode, and an electrolyte solution comprising phythalocyanine which is obtained simultaneously on the surface of the graphite working electrode and bonded to the graphite working electrode covalently and/or deposited in powder form by covalently bonding to the graphene in the solution, the method comprising:

• preparing an electrolyte solution comprising a phthalocyanine compound desired to be obtained simultaneously on a surface of the graphite working electrode,
• immersing the graphite working electrode into the electrolyte solution and making electrical connections of the electrodes,
• performing a positive potential scanning on the graphite working electrode at a certain scan rate and recording the current,
• realizing an oxidation reaction at a positive potential when switching from the negative zone to the positive zone during the potential scan, i.e. in the anodic zone,
• converting the graphite working electrode into the graphene oxide by the oxidation reaction occurring in the anodic zone,
• continuing the scan at the negative potential by returning from the positive potential zone and recording the current,
• converting the graphene oxide into the graphene by a reduction reaction occurring in the cathodic zone with a negative potential scan,
• bonding the phthalocyanine compound to the graphene covalently in a potential working range scanned simultaneously and enhancing the bonding during the ongoing cycles,
• obtaining the covalently bonded phthalocyanine-graphene hybrid material obtained based on the applied potential range on the electrode surface, or depositing the same in the solution in powder form,
• immersing the electrode, the surface of which has the covalently bonded phthalocyanine-graphene hybrid material prepared as an electrode, into ultra-pure water and washing the electrode, and drying at room temperature (18° C.-30° C.),
• washing the covalently bonded phthalocyanine-graphene hybrid material prepared as powder directly with the ultra-pure water and drying at a temperature of 20° C.-100° C.