Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of nickel foam composite material and its preparation method and its application in photoelectric catalytic removal of water pollutants

A technology of composite materials and nickel foam, applied in the photoelectric catalytic removal of pollutants in water bodies, nickel foam composite materials and its preparation, and the field of composite material preparation can solve the problem of low surface adsorption rate, large band gap, difficult Recycling and other issues, to achieve the effect of solving recycling and reuse, good electrical conductivity, and narrow band gap

Active Publication Date: 2020-09-08
SUZHOU UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For traditional photocatalysts, such as zinc oxide, there are disadvantages such as low surface adsorption rate, large band gap, and difficulty in recycling during the application process; secondly, the recombination probability of photogenerated electrons and holes generated by photocatalysts after being irradiated by light is relatively high, so photons The utilization efficiency is low, and the photocatalytic activity is not high; for the loaded photocatalytic reaction system, due to the greatly reduced light utilization efficiency, the catalytic activity is even less ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of nickel foam composite material and its preparation method and its application in photoelectric catalytic removal of water pollutants
  • A kind of nickel foam composite material and its preparation method and its application in photoelectric catalytic removal of water pollutants
  • A kind of nickel foam composite material and its preparation method and its application in photoelectric catalytic removal of water pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation of foamed nickel-supported zinc oxide composite material (NF@ZnO) is as follows:

[0033] Dissolve 4.958 g of zinc nitrate hexahydrate and 2.59 g of zinc formate in deionized water to make a 100 ml mixed solution, which is used as the electrolyte solution, using a three-electrode system (nickel foam cut into a size of 1 cm×2.5 cm, The surface was ultrasonically washed with dilute hydrochloric acid as the working electrode, the platinum wire electrode was used as the counter electrode, and the calomel electrode was used as the reference electrode). Electrodeposition was performed on the electrochemical workstation CHI660E, and the temperature of the electrolyte solution during electrodeposition was 25 °C. Firstly, a voltage of -1.3 V was set on the working electrode for 10 s; after that, a voltage of -1.0 V was set on the working electrode for 200 s, and repeated twice under this voltage. The samples were taken out from the working electrode and dried in ...

Embodiment 2

[0035] Dissolve 4.958 g of zinc nitrate hexahydrate and 2.59 g of zinc formate in deionized water to make a 100 ml mixed solution, which is used as the electrolyte solution, using a three-electrode system (nickel foam cut into 1 cm × 2.5 cm The size and surface were ultrasonically washed with dilute hydrochloric acid and used as the working electrode, the platinum wire electrode as the counter electrode, and the calomel electrode as the reference electrode). First, the voltage of the working electrode was set to -1.3 V for 10 s; then the voltage of the working electrode was set to -1.0 V for 200 s, and the deposition was repeated twice at this voltage. The samples were taken out from the working electrode and dried in a blast oven at 60 °C for 1.5 h. After that, it was placed in a tube furnace and calcined for 1 h at a temperature of 350 °C (heating rate: 2 °C / min) in an argon atmosphere to obtain a foamed nickel-supported zinc oxide composite material (NF@ZnO). The photocurr...

Embodiment 3

[0037] Dissolve 4.958 g of zinc nitrate hexahydrate and 2.59 g of zinc formate in deionized water, stir to make a 100 ml mixed solution, use this mixed solution as the electrolyte solution, and use a three-electrode system (the treated nickel foam as the working electrode, platinum wire electrode as the counter electrode, and calomel electrode as the reference electrode), electrodeposition was carried out under the electrochemical workstation CHI660E, and the temperature of the electrolyte solution during electrodeposition was 85 °C. Firstly, a voltage of -1.3 V was set on the working electrode for 10 s; after that, a voltage of -1 V was set on the working electrode for 200 s, and repeated twice under this voltage. The samples were taken out from the working electrode and dried in a forced air oven at 60 °C for 1.5 h. After that, it was placed in a tube furnace and calcined for 1 h at 350 °C (heating rate: 2-5 °C / min) in an argon atmosphere to obtain a nickel-foamed zinc oxide...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nickel foam composite material, a preparation method thereof and its application in photoelectrocatalytic removal of water pollutants. First, a foam nickel loaded zinc oxide composite material (NF@ZnO) is prepared through multiple electrodeposition methods, and then through water The composite material of nickel foam loaded with zinc oxide nanosheets and zinc-iron double metal hydroxide nanosheets (NF@ZnO@LDH) was prepared by thermal method. When using this material for catalytic reactions, it is used as the anode material in a three-electrode system. While illuminating it, a small forward bias voltage is applied to rapidly transfer the photogenerated electrons generated by the composite material under illumination. Counter electrode, thereby promoting the effective separation of photo-generated electrons and photo-generated holes, and the strong reducing ability of photo-generated electrons can reduce the highly toxic hexavalent chromium ions (Cr(VI)) in the water into low-toxic trivalent chromium ions ( Cr(III)), and the photogenerated holes left on the surface of the anode composite catalytic material can oxidatively degrade small molecules of organic pollutants in the water.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials and photoelectric catalysis, in particular to a nickel foam composite material and its preparation method and its application in photoelectric catalytic removal of water body pollutants, in particular to a nickel foam loaded with zinc oxide and zinc-iron bimetallic The preparation method of the composite material of hydroxide and its application in photoelectric catalytic removal of pollutants in water bodies. Background technique [0002] Photocatalytic technology is an advanced technology that converts many chemical reactions that need to occur under harsh conditions into reactions in a mild environment by using photon energy through catalysts. The energy source of this technology is clean and inexhaustible sunlight, which has the advantages of cost-effectiveness, environmental friendliness and so on. Most of the current research uses semiconductor powder suspension system, whic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J35/02B01J35/04C02F1/30C02F1/72C02F101/22B01J35/00
CPCC02F1/30C02F1/725B01J23/80C02F2101/22C02F2305/10B01J35/56B01J35/40B01J35/39
Inventor 路建美李娜君
Owner SUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com