CN104785199B - A kind of SiO2@MgSi0.84O2.68Nucleocapsid structure adsorbent and its preparation method and application - Google Patents
A kind of SiO2@MgSi0.84O2.68Nucleocapsid structure adsorbent and its preparation method and application Download PDFInfo
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Abstract
The invention discloses a kind of SiO2@MgSi0.84O2.68Nucleocapsid structure adsorbent and its preparation method and application, by Ludox and activated magnesia SiO in mass ratio2：MgO=5:1 mix homogeneously, the stirring that adds water add spherical SiO to pasty state2Continue to stir with water, then with the rotating speed stirring 20min of 1800rpm in gyratory shaker, dried powder is finally calcined 3h for 500～600 DEG C, you can obtain a kind of new type structure of hud adsorbent in Muffle furnace by 120 DEG C of drying.The adsorbent specific surface area is big, high adsorption capacity, adsorbs low cost, and regeneration is easily and circulating effect is good.Therefore the product can effectively solve the process problem of waste water from dyestuff, and also there is potential application in industries such as food, medicine, oil and cosmetics.
Description
Technical field
The present invention relates to a kind of novel inorganic adsorbent and its preparation method and application, more particularly to a kind of SiO2@
MgSi0.84O2.68Nucleocapsid structure adsorbent and its preparation method and application, belongs to field of inorganic materials.
Background technology
Dyestuff is widely used in industry and daily life, but pollution of the waste water from dyestuff to environment is on the rise.Due to
Absorption method has the characteristics of investing easy little, method, low cost, therefore is widely used in the process of waste water from dyestuff.Traditional absorption
Agent is mainly activated carbon, and activated carbon only has preferable absorption property to some water-soluble dyes, and regeneration is costly, makes activity
The application of carbon is restricted.Therefore, research and develop a kind of new adsorbent and become in terms of carrying out improveing etc. to traditional adsorbent
The focus of Recent study.
The content of the invention
It is an object of the invention to provide a kind of preparation method of preparing spherical SiO 2 base nucleocapsid structure adsorbent, by letter
Single economic method prepares the adsorbent that a kind of absorption property is good, with low cost and can recycle, for solving waste water
The problems such as dye discoloration in process.
Realize that the technical scheme that the object of the invention is adopted is as follows：
A kind of nucleocapsid structure adsorbent, silicon magnesium complex are coated on the surface of silicon dioxide micron ball, and molecular formula is SiO2@
MgSi0.84O2.68。
The preparation method of above-mentioned nucleocapsid structure adsorbent, comprises the following steps：Ludox is pressed into quality with activated magnesia
Compare SiO2：MgO=5:1 mix homogeneously, the stirring that adds water add spherical SiO to pasty state2Continue to stir with water, then stir in rotation
20min, 120 DEG C of drying, finally by dried powder 500～600 in Muffle furnace are stirred with the rotating speed of 1800rpm in mixing machine
DEG C calcining 3h, that is, obtain above-mentioned nucleocapsid structure adsorbent.
The gross mass for adding water twice is Ludox, activated magnesia and spherical SiO2The 1/5～2/5 of gross mass.
Nano-meter SiO_2 in described Ludox2Mass fraction be 20%～30%.
Described activated magnesia is calcined 3h in 600～800 DEG C by basic magnesium carbonate and is obtained.
Application of the above-mentioned nucleocapsid structure adsorbent in food, medicine, oil and cosmetic field.
Application of the above-mentioned nucleocapsid structure adsorbent in dye wastewater treatment.
Compared with prior art, the present invention has advantages below and beneficial effect：
Compared with conventional adsorbent, the nucleocapsid structure adsorbent specific surface area in the present invention is big, and high adsorption capacity, regeneration hold
Easily and can recycle and reduce absorption cost.Present invention process is simple, with low cost, therefore the product can effectively solve dye
The process problem of material waste water, and also there is potential using value and front in industries such as food, medicine, oil and cosmetics
Scape.
Description of the drawings
Fig. 1 is SiO2@MgSi0.84O2.68The synthesis schematic diagram of complex.
Fig. 2 is SiO2@MgSi0.84O2.68The scanning electron microscope (SEM) photograph of complex.
Fig. 3 is SiO2@MgSi0.84O2.68The transmission electron microscope picture of complex.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Nano-meter SiO_2 in Ludox in the following example2Mass fraction be 20%～30%, activated magnesia is by alkali formula
Magnesium carbonate is calcined 3h in 600～800 DEG C and is obtained.
Embodiment 1
40g Ludox is mixed homogeneously with 8g activated magnesias, is added a small amount of water to stir to pasty state, is added the spherical of 2g
SiO2Continue to stir with a small amount of water, then with the rotating speed stirring 20min of 1800rpm in gyratory shaker, 120 DEG C dry, most
Dried powder is calcined into 3h for 500 DEG C in Muffle furnace afterwards, that is, obtains the nucleocapsid structure adsorbent of white solid powder shape.Two
The gross mass of the water of secondary addition is 10g.
Embodiment 2
40g Ludox is mixed homogeneously with 8g activated magnesias, is added a small amount of water to stir to pasty state, is added the spherical of 3g
SiO2Continue to stir with a small amount of water, then with the rotating speed stirring 20min of 1800rpm in gyratory shaker, 120 DEG C dry, most
Dried powder is calcined into 3h for 540 DEG C in Muffle furnace afterwards, that is, obtains the nucleocapsid structure adsorbent of white solid powder shape.Two
The gross mass of the water of secondary addition is 15g.
Embodiment 3
40g Ludox is mixed homogeneously with 8g activated magnesias, is added a small amount of water to stir to pasty state, is added the spherical of 2g
SiO2Continue to stir with a small amount of water, then with the rotating speed stirring 20min of 1800rpm in gyratory shaker, 120 DEG C dry, most
Dried powder is calcined into 3h for 600 DEG C in Muffle furnace afterwards, that is, obtains the nucleocapsid structure adsorbent of white solid powder shape.Two
The gross mass of the water of secondary addition is 20g.
The precision architecture that the white solid powder adsorbent is obtained through multinomial analysis is SiO2@MgSi0.84O2.68, i.e. silicon
Magnesium complex is coated on the surface of silicon dioxide micron ball, forms nucleocapsid structure, and the Specific Surface Area Measurement is big, with good
Adsorptivity, can effectively adsorb the organic dyestuff in water, such as：Crystal violet, rhodamine B etc..The adsorbent to rhodamine B most
Big adsorbance is 52.71mg/g, and its adsorption efficiency to rhodamine B is still up to more than 99% after repeatedly circulating.
Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment,
In the ken that one of ordinary skill in the art possesses, can be each to make on the premise of without departing from present inventive concept
Plant change.
Claims (4)
1. a kind of preparation method of nucleocapsid structure adsorbent, it is characterised in that comprise the following steps：By Ludox and active oxidation
Magnesium SiO in mass ratio2：MgO=5:1 ratio mix homogeneously, the stirring that adds water add spherical SiO to pasty state2Continue to stir with water
Mix, then in gyratory shaker with the rotating speed of 1800rpm stirring 20min, 120 DEG C of drying, finally by dried powder in
500～600 DEG C of calcining 3h in Muffle furnace, that is, obtain silicon magnesium complex and be coated on the surface of silicon dioxide micron ball, molecular formula be
SiO2@MgSi0.84O2.68Nucleocapsid structure adsorbent.
2. the preparation method of nucleocapsid structure adsorbent according to claim 1, it is characterised in that：Total matter of water is added twice
Measure as Ludox, activated magnesia and spherical SiO2The 1/5～2/5 of gross mass.
3. the preparation method of nucleocapsid structure adsorbent according to claim 2, it is characterised in that：Receive in described Ludox
Rice SiO2Mass fraction be 20%～30%.
4. the preparation method of nucleocapsid structure adsorbent according to claim 2, it is characterised in that：Described activated magnesia
3h is calcined in 600～800 DEG C by basic magnesium carbonate to obtain.
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Effective date of registration: 20210714 Address after: 325603 Bantang Industrial Zone, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Tongda weipeng Electric Co.,Ltd. Address before: 430072 Hubei Province, Wuhan city Wuchang District of Wuhan University Luojiashan Patentee before: WUHAN University |