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Preparing method and application of active carbon fiber loaded Ag/TiO2 compound catalytic material

A technology of activated carbon fibers and catalytic materials, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxides/metal hydroxide catalysts, etc. Low pore volume, low specific surface area, etc., to achieve the effect of eliminating shedding, facilitating industrialization, and simple operation methods

Inactive Publication Date: 2018-05-08
BEIJING WATER SCI & TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low specific surface area and large pore size of conventional bulk activated carbon materials, the low pore volume and single pore size of activated carbon fibers have limited removal ability for trace small molecular substances.

Method used

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  • Preparing method and application of active carbon fiber loaded Ag/TiO2 compound catalytic material
  • Preparing method and application of active carbon fiber loaded Ag/TiO2 compound catalytic material
  • Preparing method and application of active carbon fiber loaded Ag/TiO2 compound catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 preparation of activated carbon fiber loaded Ag / TiO 2 product one

[0038] (1) Pretreatment

[0039] Activated carbon fiber felt (ST1800 type activated carbon fiber felt produced by Jiangsu Sutong Carbon Fiber Co., Ltd., specific surface area 1775.04m 2 / g, the average pore diameter is 0.859nm) uniformly cut into 3×3cm 2 Each 10g of small cubes was packed into a 500mL round-bottomed flask, soaked in water for more than 5 minutes, and heated and cooled to reflux for 1 hour using a reflux condenser. Take out the activated carbon fiber felt and wash it with distilled water to neutral immediately, then dry it in an oven at 110°C and store it for later use.

[0040] (2) Preparation of Ag / TiO by sol-gel method 2 sol

[0041] 5 mL of tetrabutyl titanate was added into 35 mL of absolute ethanol with stirring, then 2 mL of glacial acetic acid was added to the above solution, and the mixed solution was stirred at room temperature for 2 h. Take 15mL absolute ethano...

Embodiment 2

[0045] Example 2 preparation of activated carbon fiber loaded Ag / TiO 2 product two

[0046] The difference from Example 1 is that step (2) is: 5 mL of tetrabutyl titanate solution is added to 35 mL of absolute ethanol under stirring, then 2 mL of glacial acetic acid is added to the above solution, and the mixed solution is heated at room temperature Under stirring for 2h. Take 15mL absolute ethanol and add to 5mLAgNO 3 solution, and then add 1 mL of concentrated nitric acid, and add this mixed solution dropwise to the ethanol solution of tetrabutyl titanate above under stirring, and keep vigorously stirring for 2 hours. Other steps are identical with embodiment 1, obtain active carbon fiber loading Ag / TiO 2 product two. Product Field Emission Scanning Electron Microscope (FESEM) characterization picture image 3 shown.

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PUM

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Abstract

The invention relates to a preparing method of an active carbon fiber loaded Ag / TiO2 compound catalytic material and application of the active carbon fiber loaded Ag / TiO2 compound catalytic material in strengthening an ozonation technology and guaranteeing water quality of regenerated water and micropollution surface water. The preparing method comprises the steps of preparing silver-titanium dioxide compound sol through a sol-gel technology, putting activated active carbon fiber into the sol to be soaked, and obtaining the active carbon fiber loaded Ag / TiO2 compound material through the procedures of heat treatment, water leaching, nitrogen sealing and illumination activating. The prepared material has a high micropore volume and a large external surface specific area, and the mineral catalysis and decomposition effects of conventional indexes, endocrine disrupter, polycyclic aromatic hydrocarbon and general organic matter in a water body are all superior to those of unloaded active carbon fiber catalysis materials.

Description

technical field [0001] The present invention relates to a kind of catalytic material preparation method and application, relate to the Ag / TiO with activated activated carbon fiber as carrier 2 The preparation method and application belong to the technical field of preparation and application of catalytic materials. Background technique [0002] Water quality security is an important topic in the field of international water treatment, and the efficient purification technology of high-risk pollutants such as toxic organic substances, endocrine disruptors, "three-caused" substances and their precursors in the water environment is the key to ensuring water quality security. One of the research contents. Northern my country is a resource-based water-shortage area. Water recycling can bring social, economic and ecological benefits, and it is the trend of sustainable development of water resources in the future. However, several types of typical toxic organic pollutants such as ...

Claims

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Application Information

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IPC IPC(8): B01J23/50C02F1/78C02F101/34C02F101/32
CPCB01J23/50C02F1/725C02F1/78C02F2101/327C02F2101/345
Inventor 马宁刘操李其军杨兰琴战楠
Owner BEIJING WATER SCI & TECH INST
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