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Modified attapulgite loaded with copper and silver ions and silver ions and preparation method thereof

A technology for modifying attapulgite and attapulgite, which is applied in the directions of separation methods, chemical instruments and methods, and other chemical processes to achieve the effects of expanding the spectral absorption range and low price

Inactive Publication Date: 2018-08-03
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The properties of Cu and Ag to expand the spectral absorption range make up for the shortcomings of titanium dioxide's insufficient ultraviolet utilization

Method used

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  • Modified attapulgite loaded with copper and silver ions and silver ions and preparation method thereof
  • Modified attapulgite loaded with copper and silver ions and silver ions and preparation method thereof
  • Modified attapulgite loaded with copper and silver ions and silver ions and preparation method thereof

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with specific examples.

[0020] A modified attapulgite loaded with copper and silver ions is prepared through the following steps:

[0021] (1) When weighing sodium silicate with a mass ratio of 1-5:1 and distilled water to form a uniform suspension, add attapulgite with a particle size of about 1-200 μm and keep stirring. Mix until it forms a semi-dry viscous shape, make spherical granules, and let it dry naturally for later use.

[0022] (2) In the uniform sodium silicate suspension, add titanium dioxide powder at a ratio of 0.01-0.99 g / ml, and stir while adding until the titanium dioxide is evenly mixed.

[0023] (3) Put the prepared attapulgite spherical carrier into the viscous liquid in (2), and stir until the attapulgite spherical carrier is evenly loaded with titanium dioxide. After it is dried naturally, it is then calcined at 250°C for 0.5-4h, and after natural cooling, it is washed repeat...

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Abstract

The invention relates to modified attapulgite loaded with copper and silver ions and a preparation method thereof. The preparation method comprises the following steps that sodium silicate and distilled water are weighed, when uniform turbid liquid is prepared, attapulgite is added, stirring is continuously carried out until a mixture is mixed to be in a semi-dry viscous state, and spherical granular attapulgite carriers are prepared and are dried naturally for later use; titanium dioxide powder is added into the uniform sodium silicate turbid liquid, and stirring is carried out at the same time until titanium dioxide is uniformly mixed; the prepared spherical attapulgite carriers are put into viscous liquid, stirring is carried out until the spherical attapulgite carriers are uniformly loaded with the titanium dioxide, and after being natural dried, the spherical attapulgite carriers loaded with the titanium dioxide are calcined, then are naturally cooled and are washed with water; and copper ion loading and silver ion loading are carried out respectively by using a copper salt solution and a silver salt solution, the pH value of the solution is adjusted to be about 5-7, and thencalcining is carried out at 250 DEG C for 0.5-4 hours in a muffle furnace after loading is finished. According to the modified attapulgite and the preparation method thereof, the purpose of efficiently treating formaldehyde under the accessible conditions can be achieved.

Description

technical field [0001] The invention relates to the modification field of attapulgite, in particular to a modified attapulgite loaded with copper and silver ions and a preparation method thereof. Background technique [0002] Due to the use of novel construction and decoration materials, more and more harmful gas formaldehyde is continuously released into the room. Formaldehyde has become one of the main indoor pollutants due to its wide sources, high toxicity, and long pollution time. Prevention and control of high-concentration formaldehyde is of great significance to indoor air pollution and is an urgent problem to be solved. The properties of Cu and Ag to expand the spectral absorption range make up for the shortcoming of insufficient ultraviolet utilization rate of titanium dioxide. Attapulgite and titanium dioxide are used to modify formaldehyde through Cu, Ag and other substances to achieve the purpose of efficiently treating formaldehyde under easy-to-reach conditi...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/28B01J20/30B01D53/02
CPCB01D53/007B01D53/02B01D2257/70B01D2259/804B01J20/0233B01J20/0237B01J20/06B01J20/12B01J20/28019
Inventor 李声鹏刘廷凤黄嘉禄包宏叶陈尧承羽亮
Owner NANJING INST OF TECH
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