Preparation method of pt/ito electrode for high-efficiency electrocatalytic oxidation of ammonia

An electrocatalytic oxidation and electrode technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of high manufacturing cost of Pt/ITO electrodes, unusable Pt, low utilization rate of Pt, etc., and achieve easy operation and improved utilization rate, improve the effect of dispersion

Inactive Publication Date: 2016-06-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the content of Pt in nature is very small, and Pt is expensive, resulting in high manufacturing costs of Pt / ITO electrodes.
In order to reduce the manufacturing cost of Pt / ITO electrodes, it is necessary to increase the utilization rate of Pt. When the Pt nanoparticles prepared by the predecessors were added to the electroplating solution, H 2 SO 4 , the particle size of the obtained particles is 300-500nm, resulting in the unusable Pt in the nanoparticles, resulting in a very low utilization rate of Pt

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  • Preparation method of pt/ito electrode for high-efficiency electrocatalytic oxidation of ammonia
  • Preparation method of pt/ito electrode for high-efficiency electrocatalytic oxidation of ammonia
  • Preparation method of pt/ito electrode for high-efficiency electrocatalytic oxidation of ammonia

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Embodiment 1

[0028] This embodiment relates to a method for preparing a Pt / ITO electrode with high catalytic activity, comprising the following steps:

[0029] Step 1: Prepare the working electrode,

[0030] (a) First put ITO in acetone, and perform ultrasonic cleaning for 10 minutes;

[0031] (b) connecting the wire to the conductive surface of the ITO processed through step (a) and wax and encapsulating it to obtain the working electrode;

[0032] Step 2: Assemble the three-electrode system,

[0033] The Pt counter electrode, the saturated calomel reference electrode, the ITO working electrode prepared in step 1 and the concentration are 5mmol / LH 2 PtCl 6 It is connected with the electrolyte solution mixed with two solutions with a concentration of 0.5mol / HCl to form a circuit to form a three-electrode system;

[0034] Step 3: Connect the three-electrode system in step 2 to the electrochemical workstation, the electrodeposition method is the constant potential method, the deposition ...

Embodiment 2

[0037] This embodiment relates to a method for preparing a Pt / ITO electrode with high catalytic activity, comprising the following steps:

[0038] Step 1: Prepare the working electrode,

[0039] (a) First put ITO in acetone, and perform ultrasonic cleaning for 10 minutes;

[0040] (b) connecting the wire to the conductive surface of the ITO processed through step (a) and wax and encapsulating it to obtain the working electrode;

[0041] Step 2: Assemble the three-electrode system,

[0042] The Pt counter electrode, the saturated calomel reference electrode, the ITO working electrode prepared in step 1 and the concentration are 5mmol / LH 2 PtCl 6 It is connected with the electrolyte solution mixed with two solutions with a concentration of 0.5mol / HCl to form a circuit to form a three-electrode system;

[0043] Step 3: Connect the three-electrode system in step 2 to the electrochemical workstation, the electrodeposition method is the constant potential method, the deposition ...

Embodiment 3

[0046] This embodiment relates to a method for preparing a Pt / ITO electrode with high catalytic activity, comprising the following steps:

[0047] Step 1: Prepare the working electrode,

[0048] (a) First put ITO in acetone, and perform ultrasonic cleaning for 10 minutes;

[0049] (b) connecting the wire to the conductive surface of the ITO processed through step (a) and wax and encapsulating it to obtain the working electrode;

[0050] Step 2: Assemble the three-electrode system,

[0051] The Pt counter electrode, the saturated calomel reference electrode, the ITO working electrode prepared in step 1 and the concentration are 5mmol / LH 2 PtCl 6 It is connected with the electrolyte solution mixed with two solutions with a concentration of 0.5mol / HCl to form a circuit to form a three-electrode system;

[0052]Step 3: Connect the three-electrode system in step 2 to the electrochemical workstation, the electrodeposition method is the constant potential method, the deposition v...

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Abstract

The invention discloses a preparation method for a Pt / ITO (Indium Tin Oxide) electrode of efficient electro-catalysis ammonia oxidate. The method comprises the following steps: step 1, preparing a working electrode: (a), cleaning ITO, (b), connecting a conducting wire with the conductive surface of the ITO cleaned in step (a) and packaging to obtain the working electrode; steps 2, connecting a Pt counter electrode, a saturated calomel reference electrode, the working electrode and electrolyte to form a loop so as to constitute a three-electrode system, wherein the electrolyte is a mixture of H2PtCl6 solution and HCl solution; and step 3, connecting the three-electrode system into an electrochemical workstation for electrodeposition. According to the invention, after chloride ions are injected into electroplating solution, the diameters of Pt prills obtained through electrodeposition can be reduced effectively, so that nanosheet-shaped particles can be obtained, and meanwhile, the dispersivity of the prills on the surface of ITO, the catalysis efficiency of Pt and the utilization ratio of Pt can be improved. The preparation method has the advantages of simple procedure, easiness in operation, low cost, environmental friendliness and obvious effect and has better properties when being compared with the current commercial catalysis electrode.

Description

technical field [0001] The invention relates to an electrode preparation method in the technical field of electrocatalysis, in particular to a preparation method of a Pt / ITO electrode for efficient electrocatalytic oxidation of ammonia. Background technique [0002] Conductive matrix materials loaded with dispersed noble metal micro / nanoparticles have important application prospects in the fields of electrocatalysis, energy, biology, optics and electronic devices. In recent years, the use of indium tin oxide (ITO) transparent conductive films with excellent electrical and optical properties as conductive supports has attracted rapid attention. Compared with traditional conductive substrates, in addition to the advantages of low cost, ITO also has the advantages of good conductivity, high visible light transmittance, wide electrochemical window and stable physical and chemical properties. However, the content of Pt in nature is very small, and Pt is expensive, resulting in h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/08C25C1/20C25D3/48C25D7/00
Inventor 钟澄杜欣童杨耀
Owner SHANGHAI JIAO TONG UNIV
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