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Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy

A technology for cleaning water and devices, applied in chemical instruments and methods, nanotechnology for materials and surface science, general water supply conservation, etc., can solve problems such as difficult to reduce complexity cost and energy conversion timeliness, and achieve realization Maximize utilization, reduce heat loss, and reduce the effect of heat loss

Inactive Publication Date: 2021-04-02
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods of simply assembling multiple monofunctional systems into one system are difficult to reduce the complexity, cost and timeliness of energy conversion to some extent.

Method used

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  • Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy
  • Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy
  • Device preparation method for synchronously generating hydrogen energy and clean water by utilizing light energy

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Experimental program
Comparison scheme
Effect test

Embodiment

[0034] (1) Synthesis of bamboo-shaped carbon nanotube-wrapped FeNi 3 Oxygen evolution electrocatalyst, the steps are:

[0035]1) 0.27g ferric nitrate (Fe(NO 3 9H 2 O) 3 ,0.6g nickel nitrate (Ni(NO 3 9H 2 O) 3 and 0.84g of urea were added to 225ml of distilled water, and stirred for 4h.

[0036] 2) Immerse the melamine sponge in the solution obtained in step 1), and age it in the air for 12 hours (more than 5 hours are acceptable).

[0037] 3) Put the aged melamine sponge obtained in step 2) into an oven for drying, the drying condition: 100°C, 12h.

[0038] 4) Carbonize the product obtained in step 3) in nitrogen (carbonization conditions: 900°C, 2h, heating rate: 5°C / min).

[0039] 5) Grinding the product obtained in step 4) to powder.

[0040] (2) Construction of the device

[0041] 2-1) 10 mg of the synthesized oxygen evolution electrocatalyst was added dropwise to 400 μL of ethanol solution, 50 μL of naphthol solution was added as a binder, and the mixture was so...

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Abstract

The invention relates to a device preparation method for synchronously generating hydrogen energy and clean water by using light energy. A bamboo-like carbon nanotube-coated FeNi3 oxygen evolution electrocatalyst raw material is synthesized, and the method comprises the following steps: 1) adding ferric nitrate hydrate, nickel nitrate and urea into distilled water, and conducting stirring for 1 hour or more, wherein the molar ratio of iron to nickel is 1:2.5 to 1:3.5, and the amount of urea and distilled water is excessive; (2) soaking melamine sponge into the solution obtained in the step (1), and conducting aging in the air for 5 hours or more; and (3) conducting drying and carbonizing, grinding the obtained product into powder, and dropwise adding the powder on conductive glass sprayedwith the metal by a dropwise coating method to obtain an oxygen evolution electrode. Pt / C serves as a hydrogen evolution electrode, and maximum utilization from light energy to clean energy is achieved. Under the room temperature condition, the conversion efficiency from light energy to hydrogen energy is 20.1%, the efficiency of generating clean water through photo-thermal reaches 93.5%, and thecomprehensive utilization efficiency of solar energy reaches up to 87.5%.

Description

technical field [0001] The invention belongs to the field of new energy, and in particular relates to the construction of a solar energy comprehensive utilization device capable of simultaneously generating hydrogen energy and clean water. Background technique [0002] Realizing efficient conversion of solar energy has become an inevitable trend to meet the growing global energy and environmental demands. Myriad potential applications ranging from solar energy to electricity, fuel cells, or clean water have been demonstrated through rational material design, light energy management, and engineering of reaction processes. Currently, involving multiple ways of solar energy conversion in one system has attracted increasing research interest. It allows us to avoid the energy conversion efficiency issues of conventional "single-functional" systems, such as photothermal, photovoltaic, photoelectrochemical, and solar cell-driven water-splitting processes, which typically offer lim...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B1/55C25B11/091C25B9/19C02F1/04C02F1/14B82Y30/00B82Y40/00
CPCC25B1/04C02F1/048C02F1/14B82Y30/00B82Y40/00Y02P20/133Y02E60/36Y02A20/212
Inventor 曹媛姚颖方高麟峰吴聪萍邹志刚
Owner NANJING UNIV
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