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

Micro-nano porous bismuth electrode and preparation method thereof

An electrode, micro-nano technology, applied in the field of bismuth electrodes, can solve the problems that the preparation method needs to be improved and innovated, it is difficult to adapt to large-scale production, and there are many influencing factors, so as to achieve strong microstructure tunability, low market price, and simple process. Effect

Inactive Publication Date: 2014-04-02
SUN YAT SEN UNIV
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the current research situation, there are many shortcomings in the preparation of porous bismuth film electrodes by various "template methods", such as cumbersome operation, many influencing factors, poor reproducibility, and difficulty in adapting to large-scale production. improvement and innovation

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
  • Micro-nano porous bismuth electrode and preparation method thereof
  • Micro-nano porous bismuth electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A micro-nano porous bismuth electrode is prepared by the following steps:

[0053] (1) Preparation of tin-bismuth alloy electrode: Weigh 2.656g of metallic bismuth (purity of 99.5%) and 0.646g of tin (purity of 99.5%), put them into a quartz glass tube, and move them to a resistance furnace to heat for 30 minutes. The internal temperature is 450°C. During the heating process, the quartz glass tube is constantly shaken to fully mix the metal bismuth and tin melt, and finally the melt is cooled and solidified to form an alloy. Cut the alloy with a saw blade and use 4 in turn # And 6 # Grind with metallographic sandpaper to make the shape into a flake shape, the specific size is 0.50cm×0.50cm×0.112mm. The alloy was sequentially put into acetone, absolute alcohol, and deionized water for ultrasonic cleaning for 15 minutes, and dried with nitrogen to obtain a tin-bismuth alloy electrode.

[0054] (2) Tin-dissolving treatment: The tin-bismuth alloy electrode is potentiostat disso...

Embodiment 2

[0057] A micro-nano porous bismuth electrode is prepared by the following steps:

[0058] (1) Preparation of tin-bismuth alloy electrode: Weigh 1.380g of metallic bismuth (purity of 99.5%) and 1.827g of tin (purity of 99.5%), put them into a quartz glass tube, move them to a resistance furnace and heat for 30 minutes. The internal temperature is 450°C. During the heating process, the quartz glass tube is constantly shaken to fully mix the metal bismuth and tin melt, and finally the melt is cooled and solidified to form an alloy. Cut the alloy with a saw blade and use 4 in turn # And 6 # Grind with metallographic sandpaper to make the shape into a flake shape, the specific size is 0.50cm×0.50cm×0.112mm. The alloy was sequentially put into acetone, absolute alcohol, and deionized water for ultrasonic cleaning for 15 minutes, and dried with nitrogen to obtain a tin-bismuth alloy electrode.

[0059] (2) Tin-melting treatment: The tin-bismuth alloy electrode is potentiostatically tin-m...

Embodiment 3

[0062] A micro-nano porous bismuth electrode is prepared by the following steps:

[0063] (1) Preparation of tin-bismuth alloy electrode: Weigh 2.656g of metallic bismuth (purity of 99.5%) and 0.646g of tin (purity of 99.5%), put them into a quartz glass tube, move them to a resistance furnace and heat for 30 minutes. The internal temperature is 450°C. During the heating process, the quartz glass tube is constantly shaken to fully mix the metal bismuth and tin melt, and finally the melt is cooled and solidified to form an alloy. Cut the alloy with a saw blade and use 4 in turn # And 6 # Grind with metallographic sandpaper to make the shape of strips, the specific size is 0.10cm×0.10cm×1.00cm. The alloy was sequentially put into acetone, absolute alcohol, and deionized water for ultrasonic cleaning for 15 minutes, and dried with nitrogen to obtain a tin-bismuth alloy electrode.

[0064] (2) Tin-melting treatment: The tin-bismuth alloy electrode is potentiostatically tin-melted by t...

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
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a micro-nano porous bismuth electrode and a preparation method thereof. The preparation method for the micro-nano porous bismuth electrode comprises the following steps: preparing a tin bismuth alloy, wherein a mass ratio of tin to bismuth in the tin bismuth alloy is 1:(0.5-6); processing appearance of the tin bismuth alloy, thereby obtaining a tin bismuth alloy electrode; performing alloy tin-melting treatment on the tin bismuth alloy electrode according to an electrochemical method, and arranging a tin-melting potential between corrosion potentials of metal tin and bismuth, thereby obtaining the micro-nano porous bismuth electrode; and if necessary, performing anodic oxidation treatment on the micro-nano porous bismuth electrode, thereby obtaining the micro-nano porous bismuth electrode with suitable pores and size. The preparation method provided by the invention has the advantages of simple technology, environmental protection and zero pollution; the production cost of the micro-nano porous bismuth electrode is low; and the obtained micro-nano porous bismuth electrode has the advantages of strong adjustability of microstructure, flexible and controllable macroscopic shape and size, big specific surface area, high detection sensitivity and application to the detection for trace heavy metal ions and trace organic matters in liquid.

Description

Technical field [0001] The invention relates to a bismuth electrode, in particular to a micro-nano porous bismuth electrode and its application in the detection of trace heavy metals and trace organic substances. Background technique [0002] With the continuous progress of human society, various heavy metal elements are widely used in all aspects of people's daily production and life. Therefore, inevitably due to man-made or natural factors, a large amount of heavy metals are discharged into the soil and surface water, especially It is the highly toxic lead, cadmium, chromium, arsenic, etc., which lead to the accumulation of excessive heavy metals in many organisms, deteriorate the ecological environment, and seriously threaten human health and life safety. [0003] In recent years, various heavy metal pollution incidents have occurred frequently and gradually attracted people's attention. Various methods for detecting heavy metal ions have also been developed, with a wide range o...

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): G01N27/30
Inventor 任山李康劲刘芳敏洪澜
Owner SUN YAT SEN 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