Nano- floating type supported photocatalyst, low-temperature preparation method and uses thereof

A photocatalyst, floating technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem that the distribution of TiO2 on the surface of the carrier is not uniform, the floating performance of the photocatalyst is affected, and the porous or hollow structure is damaged. and other problems, to achieve good application prospects, avoid the collapse of the carrier, and avoid the effect of catalyst agglomeration

Inactive Publication Date: 2009-02-18
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they all used high-temperature calcination methods in the process of preparing photocatalysts. During the calcination process, the porous or hollow structure of the carrier may be damaged to a certain ex

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
  • Nano- floating type supported photocatalyst, low-temperature preparation method and uses thereof
  • Nano- floating type supported photocatalyst, low-temperature preparation method and uses thereof
  • Nano- floating type supported photocatalyst, low-temperature preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method of nano floating type supported photocatalyst, comprises the steps:

[0025] (1) Butyl titanate loading: first dissolve butyl titanate in ethanol to obtain 0.1mol·dm -3 Ethanol solution of butyl titanate; then, after fully mixing 50ml of butyl titanate ethanol solution with 10g of hollow microsphere floating beads, butyl titanate was loaded on the hollow microsphere floating beads by rotary evaporation method, and obtained Hollow microsphere floating beads loaded with butyl titanate.

[0026] (2) Heterogeneous hydrolysis reaction: the hollow microsphere beads that have been loaded with butyl titanate are packed in the quartz reaction tube 3 figure 1 The heterogeneous hydrolysis reaction is carried out on the heterogeneous hydrolysis device shown. During the reaction, the air flow rate is 400ml / min, the temperature of the water bath is 60°C, and the hydrolysis reaction temperature is 130°C. After 6 hours of hydrolysis reaction, hydrated TiO ...

Embodiment 2

[0030] A kind of preparation method of nano floating type supported photocatalyst, comprises the steps:

[0031] (1) Butyl titanate loading: first dissolve butyl titanate in ethanol to obtain 0.1mol·dm-3 Ethanol solution of butyl titanate; then, after fully mixing 50ml of butyl titanate ethanol solution with 10g of hollow microsphere floating beads, butyl titanate is loaded on the hollow microsphere floating beads by rotary evaporation method, and obtained Hollow microsphere floating beads loaded with butyl titanate.

[0032] (2) Heterogeneous hydrolysis reaction: put the hollow microsphere floating beads loaded with butyl titanate into the quartz reaction tube figure 1 The heterogeneous hydrolysis reaction is carried out on the heterogeneous hydrolysis device shown. The air flow rate during the reaction is about 400ml / min, the temperature of the water bath is 60°C, and the hydrolysis reaction temperature is 130°C. After 8 hours of hydrolysis reaction, hydrated TiO is formed. ...

Embodiment 3

[0035] A kind of preparation method of nano floating type supported photocatalyst, comprises the steps:

[0036] (1) Butyl titanate loading: first dissolve butyl titanate in ethanol to obtain 0.1mol·dm -3 Ethanol solution of butyl titanate; then, after fully mixing 50ml of butyl titanate ethanol solution with 10g of hollow microsphere floating beads, butyl titanate is loaded on the hollow microsphere floating beads by rotary evaporation method, and obtained Hollow microsphere floating beads loaded with butyl titanate.

[0037] (2) Heterogeneous hydrolysis reaction: put the hollow microsphere floating beads loaded with butyl titanate into the quartz reaction tube figure 1 The heterogeneous hydrolysis reaction is carried out on the heterogeneous hydrolysis device shown. The air flow rate during the reaction is about 400ml / min, the temperature of the water bath is 60°C, and the reaction temperature is 130°C. After 6 hours of hydrolysis reaction, hydrated TiO is formed. 2 / Floa...

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 discloses a nanometer floating type supported photocatalyst and a low-temperature preparation and application method thereof. The preparation method comprises the following steps of: firstly mixing the alcohol solution of butyl titanate and censphere floating beads sufficiently and evenly, loading the butyl titanate onto the censphere floating beads through a rotary evaporation method, and carrying out the outphase hydrolysis reaction of the censphere floating beads loaded with the butyl titanate to form Tio2 floating beads containing water; and then mixing the Tio2 floating beads containing water with water, cooling down, filtering, cleaning, drying the mixture in the vacuum after a crystallization reaction, and obtaining the photocatalyst. The invention can not only obtain the high-activity photocatalyst at a low temperature, but also avoid the high-temperature after-treatment step of the floating type supported photocatalyst, thereby effectively reducing the energy sources consumed in the preparation process, simultaneously avoiding the sloughing of the carrier and the agglomeration of the catalyst during the subsequent high-temperature sintering process of the supported catalyst, and realizing the degradation of organic pollutants such as oil floating on the water surface through the photocatalyst with high efficiency.

Description

technical field [0001] The invention belongs to the field of photocatalyst materials, and in particular relates to a nano-floating loaded photocatalyst, a low-temperature preparation method thereof, and an application in the environment. Background technique [0002] In recent years, the use of semiconductor powder as a photocatalyst to degrade various organic pollutants has attracted the attention of scholars in different fields at home and abroad. TiO 2 The representative semiconductor photocatalysis technology has become one of the most active research fields in the environment and other fields. However, photocatalytic technology has not been used on a large scale in wastewater treatment technology. One of the main problems in engineering applications is that the powder catalyst in the suspension system is difficult to separate and recover, and the nano-powder photocatalyst is prone to aggregation, which makes the photocatalytic effect worse. The study found that immobi...

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): B01J21/06C02F1/30A62D3/17
CPCY02W10/37
Inventor 安太成张茂林傅家谟盛国英任国发
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap