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Preparation method and application of plasmonic composite photocatalyst pd/dut-67

A technology of DUT-67 and plasmons, which is applied in the field of preparation of ion polariton composite photocatalyst Pd/DUT-67, can solve the problem that the catalytic active sites cannot be fully utilized, the catalytic efficiency is limited, and the light utilization rate is low. problem, to achieve the effect of improving photoreduction ability, improving adsorption performance, and improving transmission ability

Active Publication Date: 2022-07-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zr-MOFs have strong metal-coordination bonds, and the stability of the framework can be enhanced by highly connected inorganic nodes, but the catalytic active sites themselves cannot be fully utilized and the utilization rate of visible light is low, which limits their use in CO 2 Catalytic efficiency in photoreduction

Method used

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  • Preparation method and application of plasmonic composite photocatalyst pd/dut-67

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031](1) Preparation of DUT-67:

[0032] Dissolve 0.5 mmol of zirconium chloride in a mixed solution of 6.25 mL of N,N-dimethylformamide and 6.25 mL of N-methylpyrrolidone, add 0.34 mmol of 2,5-thiophenedicarboxylic acid and sonicate until dissolved , 3.5 mL of acetic acid was added, then the mixture was transferred to a Teflon-lined autoclave and kept at 120 °C for 24 h. A white product was obtained by centrifugation, washed with N,N-dimethylformamide until the solution was colorless, washed three times with methanol, and dried under vacuum at 120° C. for 12 hours.

[0033] (2) Preparation of Pd nanosheets:

[0034] Weigh 26.6 mg of palladium chloride and 871.3 mg of potassium iodide into a round-bottomed flask, add 1 mL of H 2 O, stir well to dissolve completely, forming a dark red solution. Before the reaction, 9.0 mL of tetraethylene glycol was quickly added, and then 160 mg of polyvinylpyrrolidone was added, and the mixture was stirred until the polyvinylpyrrolidone w...

Embodiment 2

[0039] (1) Preparation of DUT-67:

[0040] Dissolve 0.5 mmol of zirconium chloride in a mixed solution of 6.25 mL of N,N-dimethylformamide and 6.25 mL of N-methylpyrrolidone, add 0.34 mmol of 2,5-thiophenedicarboxylic acid and sonicate until dissolved , 3.5 mL of acetic acid was added, then the mixture was transferred to a Teflon-lined autoclave and kept at 120 °C for 24 h. A white product was obtained by centrifugation, washed with N,N-dimethylformamide until the solution was colorless, washed three times with methanol, and dried under vacuum at 120° C. for 12 hours.

[0041] (2) Preparation of Pd nanosheets:

[0042] Weigh 26.6 mg of palladium chloride and 871.3 mg of potassium iodide into a round-bottomed flask, add 1 mL of H 2 O, stir well to dissolve completely, forming a dark red solution. Before the reaction, 9.0 mL of tetraethylene glycol was quickly added, and then 160 mg of polyvinylpyrrolidone was added, and the mixture was stirred until the polyvinylpyrrolidone ...

Embodiment 3

[0047] (1) Preparation of DUT-67:

[0048] Dissolve 0.5 mmol of zirconium chloride in a mixed solution of 6.25 mL of N,N-dimethylformamide and 6.25 mL of N-methylpyrrolidone, add 0.34 mmol of 2,5-thiophenedicarboxylic acid and sonicate until dissolved , 3.5 mL of acetic acid was added, then the mixture was transferred to an autoclave with Teflon and kept at 120 °C for 24 h. A white product was obtained by centrifugation, washed with N,N-dimethylformamide until the solution was colorless, washed three times with methanol, and dried under vacuum at 120° C. for 12 hours.

[0049] (2) Preparation of Pd nanosheets:

[0050] Weigh 26.6 mg of palladium chloride and 871.3 mg of potassium iodide into a round-bottomed flask, add 1 mL of H 2 O, stir well to dissolve completely, forming a dark red solution. Before the reaction, 9.0 mL of tetraethylene glycol was quickly added, and then 160 mg of polyvinylpyrrolidone was added, and the mixture was stirred until the polyvinylpyrrolidone ...

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Abstract

The invention belongs to the technical field of environmental material preparation, and relates to a preparation method and application of a plasmonic composite photocatalyst Pd / DUT-67. The invention includes (1) preparation of DUT-67; (2) preparation of Pd nanosheets; (3) preparation of plasmonic composite photocatalyst Pd / DUT-67. In the present invention, DUT-67 is prepared by solvothermal method, Pd nanosheets are prepared by oil bath reduction method, and finally Pd / DUT-67 composite photocatalyst is prepared by solvothermal method. DUT-67 with porous structure and large specific surface area is used. raise CO 2 adsorption capacity and provide dispersion sites for noble metal Pd, and improve the photoelectric conversion ability, light absorption ability and selective catalytic conversion of CO of Zr-MOFs through Pd 2 performance. The invention realizes the efficient reduction of CO by the plasmonic composite photocatalyst Pd / DUT-67 composite photocatalyst 2 the goal of.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental materials, and relates to a preparation method and application of a plasmonic composite photocatalyst Pd / DUT-67. Background technique [0002] Currently, driven by global population growth and industrialization, more than 80% of global energy consumption depends on fossil fuels. By 2040, global energy consumption will increase by 56%. In addition to reducing natural energy reserves, the overexploitation of fossil fuels also leads to CO 2 Emissions have increased substantially. CO in the atmosphere 2 Concentration levels have exceeded 400 ppm (a 40% increase from 1750) and are increasing at a rate of about 2 ppm per year. It is estimated that by 2030, CO2 will be released into the atmosphere 2 will be as high as 40.2 billion tons. while excess CO 2 Emissions from the world have led to a range of environmental problems, such as global warming, ocean acidification, extreme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J31/16B01J37/10B01J37/16C01B32/40
CPCB01J31/28B01J31/1691B01J37/10B01J37/16C01B32/40B01J2531/48B01J2531/0213B01J2231/62B01J35/23B01J35/39
Inventor 刘敏赵小雪宋相海李鑫霍鹏伟闫永胜
Owner JIANGSU UNIV
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