A photocatalyst loading method

A photocatalyst and catalyst technology, applied in the field of materials, can solve the problems of low quantum conversion efficiency, narrow photoresponse range, and low solar energy utilization rate, and achieve the effects of not easy to wipe off, high catalytic activity, and low cost

Active Publication Date: 2020-08-11
LIONTRUNK (BEIJING) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing photocatalytic materials have a narrow photoresponse range, low quantum conversion efficiency, and low solar energy utilization, which are still bottlenecks restricting the application of photocatalytic materials.

Method used

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  • A photocatalyst loading method
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  • A photocatalyst loading method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A photocatalyst loading method, comprising the steps of carrier pretreatment, catalyst loading, heat treatment, and post-treatment, specifically:

[0038] A carrier pretreatment: the glass ball (tube) carrier is pretreated, washed and dried at 200°C for later use; the carrier pretreatment method is to mechanically grind the carrier, and the pressure of the grinding disc is 55kPa; after grinding, it is polished, first using HF Soak for 15s, then add H at a concentration of 3mol / L 2 SO 4 deal with.

[0039] B catalyst loading: modified TiO 2 After the catalyst is evenly stirred, the catalyst is evenly distributed on the surface of the carrier by impregnation, and the first time is dried naturally for 5-30 minutes, and then loaded again, and dried naturally;

[0040] C heat treatment: temperature 450°C, heat treatment time 30min; heating rate: 10°C / min before 300°C, 5°C / min after 300°C.

[0041] D post-processing: natural cooling, after air purging, it can be filled in...

Embodiment 2

[0043] A photocatalyst loading method, comprising the steps of carrier pretreatment, catalyst loading, heat treatment, and post-treatment, specifically:

[0044] A carrier pretreatment: wash the quartz ball (tube) carrier after pretreatment and dry it at 200°C for later use; the carrier pretreatment method is to mechanically grind the carrier, and the pressure of the grinding disc is 55kPa; after grinding, perform polishing treatment, and first use HF for soaking Treat for 15s, then add H at a concentration of 3mol / L 2 SO 4 deal with.

[0045] B catalyst loading: modified TiO 2 After the catalyst is evenly stirred, the catalyst is evenly distributed on the surface of the carrier by spraying, and the first time is dried naturally for 5-30 minutes, and then loaded again, and dried naturally;

[0046] C heat treatment: temperature 400°C, heat treatment time 50min; heating rate: 10°C / min before 300°C, 5°C / min after 300°C.

[0047] D post-processing: natural cooling, after air ...

Embodiment 3

[0049] A photocatalyst loading method, comprising the steps of carrier pretreatment, catalyst loading, heat treatment, and post-treatment, specifically:

[0050] A. Carrier pretreatment: The glass ball (tube) carrier is pretreated, washed and dried at 200°C for later use; the carrier pretreatment method is to mechanically grind the carrier, and the pressure of the grinding disc is 50kPa; after grinding, it is polished, first using HF Soak for 20s, then add H at a concentration of 2mol / L 2 SO 4 deal with.

[0051] B catalyst loading: modified TiO 2 After the catalyst is evenly stirred, the catalyst is evenly distributed on the surface of the carrier by impregnation, and the first time is dried naturally for 5-30 minutes, and then loaded again, and dried naturally;

[0052] C heat treatment: temperature 500°C, heat treatment time 30min; heating rate: 10°C / min before 300°C, 5°C / min after 300°C.

[0053] D post-processing: natural cooling, after air purging, it can be filled i...

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Abstract

The invention relates to a loading process for a photocatalyst. The loading process concretely comprises the following steps: carrier pretreatment, catalyst loading, heat treatment and after-treatment. The loading process provided by the invention solves the main problem that a photocatalyst can not immobilize and is not able to attach on a substrate for a long term in the prior art, realizes thatthe photocatalyst can attach on a substrate, especially a glass substrate for a long term and is avoided from detachment, thereby realizing long-term effectiveness of the photocatalyst.

Description

technical field [0001] The invention belongs to the field of materials, in particular to the field of preparation of inorganic materials, and mainly relates to a photocatalyst loading method, in particular to a TiO 2 Photocatalyst loading method. Background technique [0002] Photocatalytic degradation of organic pollutants is an environmentally friendly sewage purification technology that has been widely studied at present. It has the characteristics of mild reaction conditions and no secondary pollution. Treatment of low concentration refractory organic pollutants. Although people have made great progress in the cognition and application of photocatalytic phenomena, the current research results on the mechanism of photocatalysis are still not enough to guide the large-scale industrial application of photocatalytic technology due to the limitation of cognitive means and cognitive level. , it is urgent to vigorously carry out research work on the basic principles of photoc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J37/02B01J37/08
CPCB01J21/063B01J35/004B01J37/024B01J37/08
Inventor 赵志伟刘国强陈继伟
Owner LIONTRUNK (BEIJING) TECH CO LTD
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