Method for preparing activated carbon-carried nano-gold catalyst

A technology of activated carbon and nano-gold, applied in the field of environmental engineering, can solve the problems of low utilization rate of gold, lack of ozone decomposition activity of activated carbon, poor moisture resistance, etc., and achieve good stability, excellent catalytic decomposition, and stable valence. Effect
CN101785997BInactive Publication Date: 2013-01-16TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2013-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for preparing an activated carbon-carried nano-gold catalyst, comprising the following steps of preparing a dipping solution, adding at least one organic acid protective agent in the dipping solution, wherein the pKa value of the organic acid protective agent is close to the isoelectric point of the activated carbon / activated carbon fiber carrier, adjusting the pH value of the dipping solution to be close to the isoelectric point of the activated carbon / activated carbon fiber carrier; quickly and evenly putting the activated carbon / activated carbon fiber carrier in the dipping solution, mechanically stirring or ultrasonically mixing, standing, filtering, and then rinsing and drying the filtered carrier; roasting and reducing the dried gold-carried carrier to obtain an activated carbon / activated carbon fiber-carried nano-gold catalyst. The invention makes gold particles carried on the activated carbon have small size and be distributed evenly and improves the utilization rate of gold; and the low-concentration ozone and volatile organic compound in the air can be effectively dissolved by the catalyst.
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Description

technical field

[0001] The invention relates to the technical field of environmental engineering, in particular to a preparation method for loading nano-gold catalyst on activated carbon. Background technique

[0002] With the continuous advancement of social science and technology, environmental pollution is increasingly threatening human health and has become an urgent challenge for human beings today. Especially gases such as ozone will directly cause harm to the human body, causing serious hazards such as respiratory damage. Ozone is a strong oxidizing gas, and it will cause harm to human health if it exceeds a certain concentration. Therefore, my country's "Indoor Air Quality Standard (GB / T18883-2002)" stipulates that the average concentration in one hour should not exceed 0.16mg / m 3 . However, now many office or household appliances, such as printers, copiers, ozone disinfection cabinets, air purifiers, etc. will also release ozone, so the threat of harmful gases suc...

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
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