Preparation method and application of novel monatomic titanium catalyst

A catalyst, the technology of atomic titanium, applied in the field of single-atom electrocatalysis, can solve the problems of inability to apply DSCs on a large scale, be easily corroded by electrolyte, and be expensive, and achieve high photoelectric conversion efficiency, high photoelectric conversion efficiency and low cost Effect

Active Publication Date: 2017-10-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional counter electrode material is the noble metal Pt, which cannot be widely used in DSCs due to its shortcomings such as limited reserves, high price, and easy corrosion by electrolytes.

Method used

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  • Preparation method and application of novel monatomic titanium catalyst
  • Preparation method and application of novel monatomic titanium catalyst
  • Preparation method and application of novel monatomic titanium catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 90 mg of monoatomic titanium catalyst powder, add 5 ml of isopropanol, and then add some zirconium beads, and place it in a desktop disperser for ball milling at a frequency of 37.33 Hz for 4 hours. After ball milling, take 0.8mL slurry, spray it evenly on the FTO conductive glass (5cm×2cm) cleaned in advance with an art spray pen, then put the FTO conductive glass sprayed with a uniform catalyst film in an oven, 85 ℃ drying for 150min, and after natural cooling, the target counter electrode was obtained. Then assemble the device and test the photoelectric performance, at AM1.5, 100mW / cm 2 Use KEITHLEY 4200 to test the I-V performance curve of the battery under light, such as Figure 4 shown.

Embodiment 2

[0024] Weigh 90 mg of monoatomic titanium catalyst powder, add 5 ml of isopropanol, and then add some zirconium beads, and place it in a desktop disperser for ball milling at a frequency of 37.33 Hz for 4 hours. After ball milling, take 1.0mL slurry, and spray it evenly on the previously cleaned FTO conductive glass (5cm×2cm) with an art spray pen, and then put the FTO conductive glass sprayed with a uniform catalyst film in an oven, 85 ℃ drying for 150min, and after natural cooling, the target counter electrode was obtained. Then assemble the device and test the photoelectric performance, at AM1.5, 100mW / cm 2 Use KEITHLEY 4200 to test the I-V performance curve of the battery under light, such as Figure 4 shown.

Embodiment 3

[0026] Weigh 90 mg of monoatomic titanium catalyst powder, add 5 ml of isopropanol, and then add some zirconium beads, and place it in a desktop disperser for ball milling at a frequency of 37.33 Hz for 4 hours. After ball milling, take 1.2mL slurry and spray it evenly on the previously cleaned FTO conductive glass (5cm×2cm) with an art spray pen, then put the FTO conductive glass sprayed with a uniform catalyst film in an oven, 85 ℃ drying for 150min, and after natural cooling, the target counter electrode was obtained. Then assemble the device and test the photoelectric performance, at AM1.5, 100mW / cm 2 Use KEITHLEY 4200 to test the I-V performance curve of the battery under light, such as Figure 4 shown.

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Abstract

The invention relates to a preparation method and application of a novel monatomic titanium catalyst and belongs to the technical field of monatomic electro-catalysis. The preparation method comprises the following steps: carrying out ultrasonic dispersion on graphite oxide and isopropanol, and adding an isopropanol solution of organic metallic titanium salt while stirring, so as to obtain a mixed solution, wherein the concentration of graphite oxide in isopropanol is 1mg / mL-5mg / mL, and the mass ratio of organic metallic titanium salt to graphite oxide is (0.1-3) to 100; further carrying out ultrasonic dispersion on the mixed solution for 1-5 hours, and stirring for 2-20 hours; carrying out centrifugal separation on mixed liquid obtained through reaction so as to obtain precipitates, and carrying out vacuum drying; and thermally processing obtained solid powder at 400-900 DEG C in an inert atmosphere, carrying out constant-temperature processing for 70-300 minutes, and cooling to the room temperature, so as to obtain the novel monatomic titanium catalyst. The preparation method is simple in operation and low in cost, and an assembled dye-sensitized solar cell is relatively high photoelectric conversion efficiency and is a very potential substitute material for a counter electrode of the assembled dye-sensitized solar cell.

Description

technical field [0001] The invention relates to a preparation method of a novel single-atom titanium catalyst and its application in a counter electrode of a dye-sensitized solar cell, belonging to the technical field of single-atom electrocatalysis. Background technique [0002] In the modern chemical industry, the vast majority of chemical products are produced with the help of catalysts, which are widely used. From medicine, energy, military, to clothing, shoes and hats, consumer goods, from human beings, animals and plants to the sea, land and air environment that surrounds us, the role of catalysts is everywhere. [0003] In the 1980s, the emergence of nanomaterials triggered a technological and industrial revolution. It also provides an opportunity for the development of new heterogeneous catalysts. Nano-catalysts have excellent catalytic activity and selectivity unparalleled by traditional catalysts, and the nano-effects of catalytic materials have caused breakthrou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06H01G9/20H01G9/042B22F9/24
CPCB01J21/063B22F9/24H01G9/2022Y02E10/542
Inventor 梁素霞史彦涛郝策
Owner DALIAN UNIV OF TECH
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