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

Preparation method, product, and applications of cetyl trimethyl ammonium bromide modified bismuth molybdate photoelectrode

A technology of hexadecyltrimethylammonium bromide and bismuth molybdate, which is applied in chemical instruments and methods, light water/sewage treatment, water pollutants, etc., can solve the problems of limited popularization and application, high recombination rate of photogenerated charges, and Problems such as unsatisfactory photocatalytic activity

Active Publication Date: 2019-11-26
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure Bi 2 MoO 6 Due to the wide band gap, it can only respond to ultraviolet light, which greatly limits its popularization and application; at the same time, its photogenerated charge recombination rate is high, and its photocatalytic activity is not satisfactory.

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
  • Preparation method, product, and applications of cetyl trimethyl ammonium bromide modified bismuth molybdate photoelectrode
  • Preparation method, product, and applications of cetyl trimethyl ammonium bromide modified bismuth molybdate photoelectrode
  • Preparation method, product, and applications of cetyl trimethyl ammonium bromide modified bismuth molybdate photoelectrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Preparation of bismuth molybdate powder by hydrothermal method

[0034] Take 1mol / L Na 2 MoO 4 2H 2 O solution 50ml and 2mol / L Bi(NO 3 ) 3 ·5H 250ml of O solution was thoroughly mixed to obtain a bismuth molybdate precursor solution, adjusted to a pH value of 9 with NaOH, placed in a hydrothermal reaction kettle, and subjected to a hydrothermal reaction at 120°C for 24 hours, and filtered after the hydrothermal reaction was completed. Dry and grind at 60°C to obtain bismuth molybdate powder;

[0035] Step 2: Preparation of bismuth molybdate photoelectrode

[0036] Add 0.15g of bismuth molybdate powder prepared in step 1 to 10ml of water to make a bismuth molybdate suspension, add 2mL of polyethylene glycol 400 and stir evenly, then add 0.1g of ethanol, heat and stir at 70°C until completely dissolved, and obtain a viscous Suspension, the suspension is evenly scraped onto the FTO conductive glass, the thickness of the film layer is 45 μm, placed in an oven...

Embodiment 2

[0038] The preparation process is the same as in Example 1, the difference is that 0.04mol of CTAB is added to the uniformly mixed bismuth molybdate precursor solution in step 1 to obtain a CTAB-modified bismuth molybdate photoelectrode (BMO-1);

[0039] The photoelectrode prepared in embodiment 1 and embodiment 2 is carried out structure and morphology analysis, and the X-ray diffraction spectrum (XRD) of implementing 1 photoelectrode and embodiment 2 photoelectrode is as follows figure 1 As shown, several groups of enhanced diffraction peaks 2θ=28.24°, 32.59°, 33.07°46.72°, 55.45°, 56.16° and 58.42° can be observed in the spectrum, corresponding to (131), (002), (060) , (202), (331), (262) crystal planes, the positions of the diffraction peaks and Bi 2 MoO 6 The XRD standard card (JCPDS 21-0102) matches, all belong to the orthorhombic crystal phase, and no other impurity phases appear, indicating that the purity is high. After calcining in the muffle furnace, it can be see...

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of semiconductor photoelectric catalytic oxidation, and more specifically relates to a preparation method, a product, and applications of a cetyl trimethylammonium bromide hydro-thermal method modified bismuth molybdate photoelectrode. The preparation method comprises following steps: hydro-thermal method is adopted to prepare a CTAB added bismuth molybdate powder, polyethylene glycol and a small amount of ethanol are added successively to prepare a suspension solution with excellent viscosity, the suspension solution is subjected uniform scrapingcoating onto FTO electro-conductive glass, the coated FTO electro-conductive glass is introduced into a baking oven for drying, and is introduced into a muffle furnace for high temperature roasting soas to obtain the CTAB added modified bismuth molybdate photoelectrode. According to the preparation method, the Bi2MoO6 prepared through adding of a surfactant is changed from particles into smallerthinner nanometer sheets, photoelectrode band-gap bandwidth is reduced from 2.57eV to be 2.23eV, photocurrent density is 0.029<mu>A / cm2, is increased by 1.5 times than that of a product contain no surfactant. It is shown by methylene blue degradation test that, the degradation efficiency of the improved photoelectrode is increased by 26%.

Description

technical field [0001] The invention relates to the field of photoelectric catalytic oxidation of semiconductors, in particular to a preparation method, product and application of cetyltrimethylammonium bromide modified bismuth molybdate photoelectrode. Background technique [0002] The rapid development of industrialization has produced a large amount of wastewater, and organic dyes are one of the main components of wastewater. Widespread environmental and health concerns arise from organic dyes from the textile, plastic, leather and cosmetics industries. Since organic dyes absorb sunlight, chromophore dyes like methylene blue affect phytoplankton in water by inhibiting photosynthetic activity. These carcinogenic pollutants pose a threat to mammals through the food chain and direct contact with contaminated water. Many traditional water treatment methods such as biological oxidation, adsorption, photocatalysis, and flocculation-ion precipitation have been used to remove 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
IPC IPC(8): C02F1/461C02F1/32C02F101/38
CPCC02F1/46109C02F1/32C02F2001/46133C02F2101/308C02F2101/38
Inventor 薛娟琴雷大士张健李姝昊毕强唐长斌
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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