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Reduced graphene oxide/porphyrin/platinum nano composite material and preparation and application thereof

A composite material and platinum nanotechnology, applied in the field of photocatalysis, can solve the problems of photocatalytic efficiency that needs to be improved, high cost of synthesis method, unsuitable for popularization and application, and achieve low cost, good photocatalytic performance and simple experimental conditions Effect

Active Publication Date: 2017-07-18
SHENZHEN MATHENTECH INTELLIGENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, self-assembled bio-organic molecules are another new idea to construct functional composite materials. For the construction of this material, the processes provided by relevant researchers are graphene oxide / porphyrin, graphene oxide / platinum nanoparticles, etc. Preparation, not only the cost of the synthesis method is relatively high, but also the steps are complicated, and the photocatalytic efficiency needs to be improved, which is not suitable for popularization and application

Method used

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  • Reduced graphene oxide/porphyrin/platinum nano composite material and preparation and application thereof
  • Reduced graphene oxide/porphyrin/platinum nano composite material and preparation and application thereof
  • Reduced graphene oxide/porphyrin/platinum nano composite material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation method of ITO-RGO-TCPP NR-PtNPs nanocomposite:

[0028] Step (1): Preprocessing of ITO

[0029] Put the ITO into a beaker, wash it ultrasonically for 15 minutes with soapy water, double distilled water, acetone, ethanol and double distilled water, and dry it with nitrogen for later use;

[0030] Step (2): Preparation of RGO thin film

[0031] a. Synthesis of GO: The preparation of GO comes from the improved Hummers method. The specific process is as follows: Accurately weigh 1.5g of flake graphite and 9g of potassium permanganate in a 250mL round bottom flask. Add mixed acid solution (180mL of sulfuric acid and 20mL of phosphoric acid), adjust the temperature of the stirrer, raise the temperature of the mixture in the round bottom flask to 50°C, and keep stirring at this temperature for 12h to obtain a brownish purple liquid; after cooling to room temperature, add 200mL distilled water and 3mL hydrogen peroxide, the liquid is bright yellow at this time; st...

Embodiment 2

[0040] Preparation method of ITO-RGO-TCPP NR-PtNPs nanocomposite:

[0041] The synthesis method of GO in step (1) and step (2) is the same as in Example 1; the concentration of GO aqueous solution in step (2) is 0.9 mg / mL, and the number of deposition circles is 6 circles;

[0042] Step (3): Porphyrin modification of RGO film

[0043] The preparation method of a.TCPP is the same as embodiment 1;

[0044] b. Weigh 4.1mg of TCPP into beaker A, dissolve with 0.5mL 0.2mol / L NaOH solution to obtain liquid A; weigh 42mg of CTAB into beaker B, add 12mL of 0.31% hydrochloric acid solution, Obtain liquid B; quickly pour liquid A into liquid B and stir for 35 minutes to obtain TCPP NR solution, centrifuge at a speed of 5500r / min for 8 minutes, rinse with ultrapure water for 5 times, continue centrifuging to remove excess CTAB, and finally TCPP NR The concentration is 0.51×10 -3 mol / L;

[0045] c. Use a pipette gun to pipette 2.5 μL of the above TCPP NR solution and drop-coat it on t...

Embodiment 3

[0049] Preparation method of ITO-RGO-TCPP NR-PtNPs nanocomposite:

[0050] The synthesis method of GO in step (1) and step (2) is the same as in Example 1; the concentration of GO aqueous solution in step (2) is 0.1mg / mL, and the number of deposition circles is 6 circles;

[0051] Step (3): Porphyrin modification of RGO film

[0052] The preparation method of a.TCPP is the same as embodiment 1;

[0053] b. Weigh 4.25mg of TCPP into beaker A, dissolve it with 0.5mL 0.2mol / L NaOH solution to obtain liquid A; weigh 48mg of CTAB into beaker B, add 12mL of hydrochloric acid solution with a volume fraction of 0.32%, Obtain liquid B; quickly pour liquid A into liquid B and stir for 40 minutes to obtain TCPP NR solution, centrifuge at 6000r / min for 10 minutes, rinse with ultrapure water for 5 times, continue to centrifuge to remove excess CTAB, and finally TCPP NR The concentration is 0.53×10 -3 mol / L;

[0054] c. Use a pipette gun to pipette 5 μL of the above TCPP NR solution and...

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Abstract

The invention discloses a reduced graphene oxide / porphyrin / platinum nano composite material and a preparation and application thereof and belongs to the technical field of photocatalysis. Reduced graphene oxide with good electric conductivity is adopted as a molecule of an anchor group, a reduced graphene oxide film is modified by adopting rodlike 5,10,15,20-tetra(4-carboxyphenyl) porphyrin with optimal photocatalytic performance in porphyrin, and platinum nanoparticles as an optimal catalytic dehydrogenation material are finally loaded on the modified reduced graphene oxide film. The prepared ITO-RGO-TCPP NR-PtNPs nano composite material has good photocatalytic performance and can be used as a catalyst in the photocatalytic hydrogen production capacity process; the whole method is short in technological process, simple in experiment condition, low in cost and free of pollution to environment; and the requirements of clean production are met.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a reduced graphene oxide / porphyrin / platinum nanocomposite material and its preparation and application of the nanocomposite material as a photocatalyst. Background technique [0002] With the rapid development of social economy, the energy and environmental crisis has become a global problem. Therefore, on the basis of rational use of fossil energy, the development of clean and renewable energy to replace fossil fuels is an extremely urgent problem facing the world today. Solar energy is undoubtedly a very good renewable energy source. However, only natural photosynthesis cannot meet the increasing energy demand of human beings. Therefore, converting light energy into chemical energy by constructing non-natural photosynthetic materials is the current solution for people to resolve energy. One of the best strategies for a crisis. However, the existing semiconductor photoca...

Claims

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Application Information

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IPC IPC(8): B01J31/04C01B3/04B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B3/042B01J31/04B01J35/39Y02E60/36
Inventor 卢小泉姚敏张卓越何静姬林霞何笑王泽
Owner SHENZHEN MATHENTECH INTELLIGENT TECH
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