ni/nio/tio 2 Preparation method of heterojunction materials and its application in bifunctional catalysis for electrolysis of water
A heterojunction and nickel salt technology, applied in the direction of electrolytic components, electrolytic process, electrodes, etc., can solve the problems of unstable metal phase and easy to be corroded, and achieve the effects of improved catalytic performance, good coating, and simple preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0047] At room temperature, 8.25g NiCl 2 Dissolve in a mixture of 73.3mL ethanol and 2.4mL diethanolamine, then add 3.3mL tetrabutyl titanate dropwise while stirring, then add dropwise a mixture of 20mL ethanol and 1mL water, and continue stirring until the solution is clear. form sol. Add 10mL of deionized water dropwise to the sol until a jelly-like gel slightly forms on the surface, stop stirring, let it stand for it to completely transform into a jelly-like gel, then blow dry it at 80-90°C, and then dry it in the air It is dried at a high temperature of 500° C. for 1 hour, and the powder is ground for use. followed by 95%Ar-5%H 2 The reduction was performed at 350° C. for 3 hours in an atmosphere. Finally, the above-mentioned reduced powder was weakly oxidized at 240° C. for 15 minutes in an air atmosphere.
[0048] figure 1 The sample prepared for embodiment 1 was drop-coated on the GC electrode (loading capacity is 0.22mg / cm 2 ) measured OER linear voltammetry swee...
Embodiment 2
[0050] At room temperature, 8.25g NiCl 2 Dissolve in a mixture of 73.3mL ethanol and 2.4mL diethanolamine, then add 3.3mL tetrabutyl titanate dropwise while stirring, then add dropwise a mixture of 20mL ethanol and 1mL water, and continue stirring until the solution is clear. Form sol; add 10mL deionized water to sol drop by drop until a jelly-like gel is slightly produced on the surface, stop stirring, let it stand for it to completely transform into a jelly-like gel, and then blow dry it at 80-90°C, and then It is dried at a high temperature of 500° C. for 2 hours in air, and the powder is ground for use. followed by 95%Ar-5%H 2 Reduction at 350°C for 3 hours in an atmosphere, and finally weak oxidation at 240°C for 30 minutes in an air atmosphere.
[0051] figure 2 The sample prepared for embodiment 2 is drop-coated on the GC electrode (loading capacity is 0.22mg / cm 2 ) measured OER linear voltammetry sweep (LSV). It can be seen from the figure that when the current d...
Embodiment 3
[0053] At room temperature, 8.25g NiCl 2 Dissolve in a mixture of 73.3mL ethanol and 2.4mL glacial acetic acid, then add 3.3mL tetrabutyl titanate dropwise while stirring, then add 20mL ethanol and 1mL water mixture dropwise, continue stirring until the solution is clear, Form sol; place the sol in a water heating box at 80°C for 4 hours, then blow dry it at 80-90°C, grind the powder for later use; then place the powder in 95% Ar-5% H 2 Reduction at 350°C for 4 hours under an atmosphere with an atmosphere flow rate of 150sscm; finally, the powder was weakly oxidized at 240°C for 30 minutes in an air atmosphere.
[0054] image 3 The sample prepared for embodiment 3 is drop-coated on the GC electrode (loading capacity is 0.22mg / cm 2 ) measured OER linear voltammetry sweep (LSV). It can be seen from the figure that when the current density of the electrode is 10mA / cm 2 , the overpotential corresponding to OER reaction oxygen production in alkaline aqueous solution is 370mV; ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More