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Method for producing hydrogen from water through photoelectrocatalysis decomposing, used plasma catalyst and preparation method of plasma catalyst

A technology of plasma and photoelectric catalysis, applied in physical/chemical process catalysts, chemical instruments and methods, electrolysis process, etc., can solve the problems of high overpotential energy consumption and low catalyst efficiency, and achieve low overpotential and excellent catalytic performance , the effect of reducing energy consumption

Active Publication Date: 2018-11-23
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the problems of high overpotential energy consumption and low catalyst efficiency in the electrocatalytic decomposition of water to produce hydrogen, the present invention provides a carbon material-supported metal nanoparticle catalyst. The metal nanoparticle surface of the catalyst has a plasmon resonance effect, which effectively reduces the The overpotential of electrocatalytic decomposition of water to produce hydrogen can effectively reduce energy consumption and maximize catalytic efficiency; at the same time, the catalyst has low material cost and simple preparation method, and is suitable for large-scale industrial production and use

Method used

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  • Method for producing hydrogen from water through photoelectrocatalysis decomposing, used plasma catalyst and preparation method of plasma catalyst
  • Method for producing hydrogen from water through photoelectrocatalysis decomposing, used plasma catalyst and preparation method of plasma catalyst
  • Method for producing hydrogen from water through photoelectrocatalysis decomposing, used plasma catalyst and preparation method of plasma catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Embodiment 1 prepares N-doped graphene-like carbon nanomaterial (PNC)

[0052] Take 0.3g Zn(OAc) 2 2H 2 O was dissolved in 5mL of water, 1.12g of 2-methylimidazole was dissolved in 5mL of water, then the two solutions were mixed and stirred until uniform, the obtained uniform mixed solution was left at room temperature for 24h, centrifuged, and dried at 60°C to obtain ZIF -8 crystal powder. The resulting 100mg ZIF-8 was placed in a porcelain boat and put into a tube furnace, under N 2 Heating to 900° C. under atmosphere, maintaining for 3 hours, and then cooling down to room temperature naturally, to obtain a porous N-doped graphene-like carbon nanomaterial (PNC).

Embodiment 2

[0053] Embodiment 2 prepares gold nanoparticle sol

[0054] Measure out ice water to prepare 3mL 0.1M NaBH 4 solution, added to 100mL 0.25mM HAuCl 4 The solution was stirred rapidly for 5 minutes, and then aged at room temperature for 12 hours in the dark to obtain a wine-red gold nanoparticle sol.

Embodiment 3

[0055] Embodiment 3 prepares plasma catalyst PNC-Au

[0056] Get 10mg of the N-doped graphene-like carbon nanomaterial (PNC) prepared in Example 1 and disperse it in the gold nanoparticle sol prepared in 40mL of Example 2, stir and react at room temperature for 24 hours, so that the gold nanoparticles can be self-assembled and loaded by electrostatic interaction Put it on the PNC, centrifuge, and dry to obtain the plasma catalyst, which is denoted as PNC-Au. From figure 1 It can be seen from the TEM image of PNC-Au shown that the dispersion of gold nanoparticles on PNC is very uniform. figure 2 It is the X-ray powder diffraction pattern of PNC and PNC-Au, shown in the figure proves that the loaded material has the plasma characteristic absorption peak produced by gold nanoparticles. image 3 It is the ultraviolet-visible absorption spectrum of gold nanoparticles and PNC-Au, which proves that the gold nanoparticles are successfully loaded on the PNC, and the dispersion is go...

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Abstract

The invention belongs to the technical field of nanometer material preparation and hydrogen preparation catalysts, and particularly relates to a method for producing hydrogen from water through photoelectrocatalysis decomposing, a used plasma catalyst, and a preparation method and application of the plasma catalyst. The catalyst is a composite material with metal nanoparticles loaded on a carbon nanomaterial. The plasma catalyst can be used for producing hydrogen from water through photoelectrocatalysis decomposing; the photoelectrocatalysis hydrogen production overpotential of the catalyst can reach 99mV (when the current density reaches 10mA cm<-2>), and is lowered by about 100mV than the overpotential without the introduction of light source and without the plasma effect; the photoelectric current is 8 times of that without the plasma effect; the effect of producing hydrogen from water through photoelectrocatalysis decomposing of the catalyst is obviously improved; the energy efficiency is reduced.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production catalysts, and in particular relates to a method for photoelectrocatalytically decomposing water to produce hydrogen, a plasma catalyst used therein, and a preparation method and application of the catalyst. Background technique [0002] Due to the continuous consumption of traditional fossil raw materials, energy shortages and environmental pollution are becoming more and more serious. Therefore, building a clean and renewable new energy system has become the focus of global attention and a major strategy. Hydrogen energy is considered to be a future energy carrier with great potential because of its high efficiency, cleanliness, and renewable factors. It is regarded as the most promising "green energy" and has attracted extensive attention from various countries. [0003] To develop hydrogen energy, it is very important to study new hydrogen production methods that are economical, re...

Claims

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Application Information

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IPC IPC(8): B01J27/24C25B1/04C25B11/08
CPCC25B1/04B01J27/24C25B1/55C25B11/091B01J35/50B01J35/33B01J35/40B01J35/39Y02E60/36
Inventor 张海霞张华彬康遥张健
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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