CN103395814A - Nanometer calcium carbonate assembled into plant microscopic structure and preparation method and application of nanometer calcium carbonate - Google Patents
Nanometer calcium carbonate assembled into plant microscopic structure and preparation method and application of nanometer calcium carbonate Download PDFInfo
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Abstract
The invention particularly relates to nanometer calcium carbonate assembled into a plant microscopic structure and a preparation method and an application of the nanometer calcium carbonate. The preparation method comprises the following steps: dissolving soluble calcium salt into deionized water, stirring to completely dissolve the soluble calcium salt, and adding plant mould plates, wherein 0.005-4 mole of calcium salt is dissolved into each liter of deionized water, and 1-50 grams of plant mould plates is added to each liter of calcium salt solution; heating the calcium salt solution to 30-120 DEG C, sufficiently stirring the calcium salt solution, dropwise adding a carbonate solution to the calcium salt solution, and continuously keeping stirring and constant temperature for 9-72 hours, wherein the nanometer calcium carbonate can be generated and assembled into the specific plant microscopic structure at the same time; filtering to obtain a crude product solution, collecting filter residue from the crude product solution, cleanly washing by using the deionized water, and drying in a drying box at 60 DEG C for 12 hours; and placing a dried sample into a muffle furnace for high-temperature calcining so as to obtain the nanometer calcium carbonate. The nanometer calcium carbonate assembled into the plant microscopic structure, which is disclosed by the invention, has mesoporous and relatively large specific area (18-60 m<2>/g), can be used for adsorbing the heavy metal ions, such as Pb<2+>, Cd<2+>, Co<2+>, Mn<2+>, Ni<2+>, Cr<3+>, Zn<2+> and Cu<2+>, and can also be applied to the aspects of medical materials, catalysts, plastics, ceramics and the like.
Description
Technical field
The invention belongs to technical field of function materials, be specifically related to be assembled into nano-calcium carbonate and method for making and the purposes of plant microtexture.
Background technology
Nano-calcium carbonate is a kind of Novel super-thin solid inorganic chemical materials that grows up the eighties in 20th century, has environmental protection, cheapness, nontoxic, the functional characteristics such as outstanding, thereby enjoys people's concern.Research shows, nano-calcium carbonate causes its using value difference because of the difference of its crystal formation and pattern, and the performance of covering is good because having, the characteristics such as whiteness is high, stable chemical performance are widely used in the industries such as metallurgy, cement, glass as calcite; Aragonite becomes the strengthening and toughening agent of desirable biomedical material and advanced composite material because having higher length-to-diameter ratio; The suitable papermaking filler of doing of hollow ball-shape calcium carbonate; Cubic and chain calcium carbonate can be used separately as plastics and loading material of rubber; Also have simultaneously the investigator to find that nano-calcium carbonate can be used as the sorbent material Adsorption of Heavy Metal Ions.
Nano-calcium carbonate has a lot of superior performances, except the chemical property with itself is relevant, also with its preparation method and microtexture, close contacting is arranged.Therefore, the exploitation of the calcium carbonate product of special construction and pattern has become present study hotspot.
The synthetic method of controlling shape and appearance of calcium carbonate is mainly template, and Chinese patent (application number CN200710039146.7) has been reported and taken bean sprouts as template, then added nitrilotriacetic acid(NTA) to synthesize flower-like nanometer calcium carbonate as collaborative template.Chinese patent (application number CN201110423088.4) has reported that usining end carboxyl super branched polyethers has synthesized spherical calcium carbonate as template.Dai Hongxing etc. (inorganic chemicals industry, 2011,43(5) 18-19) are in order to triblock copolymer P123 (PE0
20PPO
70PEO
20), cetyl trimethylammonium bromide and polyoxyethylene glycol be soft template, by hydrothermal method, obtains to have rectangular shape and the mesoporous polycrystalline calcium carbonate of six side's shapes.Zhao Lina etc. (Journal of Chemical Industry and Engineering, 2012,63(6) 1977-1978) utilize polyvinylpyrrolidone (PVP) and sodium laurylsulfonate (SDS) composite additive as organic formwork, have prepared the hollow spheres calcite type calcium carbonate.(the artificial lens journal such as Ding Hongxia, 2011,40(1) 258-259) with polyvinyl alcohol (PVA) and sodium polystyrene sulfonate (PSSS), with cetyl trimethylammonium bromide (CTAB) composition hybrid template, synthesized flower-shaped, spherical, cubic calcium carbonate respectively.More than utilize different types of organic compound as template, the shape and appearance of calcium carbonate novelty that obtains, but preparation process complexity, production cost is high, the simultaneously introducing of organic compound, in case deal with improperly will introduce impurity also can be to environment.
In order to overcome the deficiencies in the prior art, the present invention adopts plant as template, to prepare the nano-calcium carbonate that is assembled into the plant microtexture, and the raw material of its use is cheap and easy to get, and the material preparation process is simple, and environmentally safe.Be assembled into the nano-calcium carbonate of the special microtexture of plant because granularity is little, the characteristics such as specific surface area is large, make it at aspects such as biomedical material, catalytic material, plastics, pottery, dyestuff and makeup, have the performance more superior than conventional material.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of preparation method who is assembled into the nano-calcium carbonate of plant microtexture is provided.The method, take soluble calcium salt and carbonate as raw material, adopts coprecipitation method to synthesize, and controls reactant concn, plant template, calcining temperature, calcination time and obtain nano-calcium carbonate, and nano-calcium carbonate can be assembled into the microtexture of plant template; Described nano-calcium carbonate crystalline form is calcite, and particle diameter is 40～60nm; The described nano-calcium carbonate that is assembled into the plant microtexture can be used for Adsorption of Heavy Metal Ions Pb
2+, Cd
2+, Co
2+, Mn
2+, Ni
2+, Cr
3+, Zn
2+Or Cu
2+.
Purpose of the present invention is achieved by the following technical programs:
(1) soluble calcium salt is dissolved in deionized water, stirs it is dissolved fully, and add the plant template.The concentration of soluble calcium salt is 0.005～4mol/L, the plant template of adding 1～50g in every liter of solubility calcium salts solution.
(2) the solubility calcium salts solution is heated to 30～120 ℃, fully stir the solubility calcium salts solution, carbonate solution is dropwise added wherein, continue to keep stirring and constant temperature 9～72h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of plant.The concentration of carbonate is 0.005～4mol/L; Mol ratio between soluble calcium salt and carbonate is controlled at 1:1.
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, and dry in loft drier.
Drying temperature is 35～70 ℃, and be 12～36h time of drying.
(4) dried sample is placed in to the retort furnace high-temperature calcination, namely obtains being assembled into the nano-calcium carbonate of plant microtexture.
Described soluble calcium salt be in calcium chloride, nitrocalcite, calcium acetate, Calcium Bromide, calcium iodide or calcium chlorate one or more arbitrarily than mixture.
Described soluble carbonate salt be in sodium carbonate, volatile salt or salt of wormwood one or more arbitrarily than mixture.
Described plant template is dry cotton, chalina, leaf, Stigma Maydis, lotus dish or floral disc of sunflower into.
Calcining temperature described in the present invention is 300～550 ℃, and calcination time is 6～24h.
Compared with prior art, advantage of the present invention is as follows:
1. the template of selecting in the present invention has the advantages such as aboundresources, cost are low, pollution-free, easy removal, the chemical reaction advantages of nontoxic raw materials, the cost that use are low, simple to operate, and in preparation process, do not have pollutent to produce, so, from selection or the preparation process of raw material, be all eco-friendly.
2. the present invention is template, regulation and control reactant concn, calcining temperature, calcination time by adopting plant, obtains being assembled into the nano-calcium carbonate (seeing Fig. 2 and Fig. 3) of plant template microtexture.(Fig. 2 a, Fig. 3 a) and the microscopic appearance of synthetic product (Fig. 2 b, Fig. 3 b), can find out that nano-calcium carbonate particles can be assembled into the microtexture of plant template by plant template in comparison diagram 2 and Fig. 3.The regulation and control of microscopic appearance can realize the adjustment to material specific surface area, pore volume and pore size distribution, make the range of application of calcium carbonate wider.
3. in the nano-calcium carbonate that is assembled into plant template microtexture that the present invention is prepared, exist mesoporous, mesoporous existence can effectively increase the specific surface area of prepared nano-calcium carbonate, makes it at aspects such as medical material, catalyzer, sorbent materials, more wide application be arranged.Fig. 4 is the N that is assembled into the nano-calcium carbonate of plant microtexture in the present invention
2The adsorption-desorption isothermal map, from figure can find out the nano-calcium carbonate powder body material, exist mesoporous.Simultaneously, the nano-calcium carbonate that is assembled into plant template microtexture provided by the present invention has larger specific surface area (18～60m
2/ g).
4. calcium carbonate product purity is high.Fig. 1 is the X-ray diffracting spectrum of the nano-calcium carbonate that is assembled into the plant microtexture of embodiment 2 preparations in the present invention, with standard card PDF
#The peak type of 72-1937 is consistent, for the calcite structure, belongs to hexagonal system; The crystallization of sharp-pointed characteristic diffraction peak interpret sample is more complete, and in collection of illustrative plates, the inclusion-free peak exists, and proves that product has quite high purity.
5. the particle size distribution of nano-calcium carbonate is even.Fig. 5 is the TEM figure that is assembled into the nano-calcium carbonate with plant microtexture of embodiment 6 preparations in the present invention.As seen from the figure: the nano-calcium carbonate distribution of sizes is more even, and particle diameter is 40～60nm.
6. the nano-calcium carbonate particles for preparing of the inventive method can be used for Adsorption of Heavy Metal Ions Pb
2+, Cd
2+, Co
2+, Mn
2+, Ni
2+, Cr
3+, Zn
2+, Cu
2+.
In a word, the method has raw material and is easy to get, and is simple to operate, and energy consumption is low, and environmentally safe is beneficial to the advantages such as industrialization promotion.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The accompanying drawing explanation
Fig. 1 is the X-ray powder diffraction that is assembled into the nano-calcium carbonate of plant microtexture of the present invention.
Fig. 2 is the SEM figure of cotton template.
Fig. 3 is the SEM figure of the nano-calcium carbonate synthetic take cotton as template.
Fig. 4 is the SEM figure of chalina template.
Fig. 5 is the SEM figure of the nano-calcium carbonate synthetic take chalina as template.
Fig. 6 is the N that is assembled into the nano-calcium carbonate of plant microtexture of the present invention
2The adsorption-desorption isothermal map, its center line 1 is adsorption curve, line 2 is the desorption curve.
Fig. 7 is the TEM figure that is assembled into the nano-calcium carbonate of plant microtexture of the present invention.
Embodiment
Embodiment 1.
(1) calcium chloride is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add cotton, wherein the concentration of calcium chloride solution is 0.005mol/L, and the quality of cotton is 1g;
(2) calcium chloride solution is heated to 30 ℃, fully stir calcium chloride solution, the sodium carbonate solution that is 0.005mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 9h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of cotton;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 36h in the loft drier of 35 ℃;
(4) dried sample is placed in to retort furnace and carries out 300 ℃ of high-temperature calcination 10h, namely obtain being assembled into the nano-calcium carbonate of cotton microtexture.
With BET, detect the nano-calcium carbonate that gained is assembled into the cotton microtexture, measuring result is shown in Fig. 6, from Fig. 6 N
2It is mesoporous that the adsorption-desorption thermoisopleth can find out that the nano-calcium carbonate powder body material exists, and specific surface area is 40.2840m
2/ g.
Embodiment 2.
(1) nitrocalcite is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add cotton, wherein the concentration of ca nitrate soln is 0.05mol/L, and the quality of cotton is 6g;
(2) ca nitrate soln is heated to 60 ℃, fully stir ca nitrate soln, the sal volatile that is 0.05mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 18h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of cotton;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 30h in the loft drier of 40 ℃;
(4) dried sample is placed in to retort furnace and carries out 400 ℃ of high-temperature calcination 15h, namely obtain being assembled into the nano-calcium carbonate of cotton microtexture.
With X-ray diffractometer, analyze the nano-calcium carbonate that gained is assembled into the cotton microtexture, X-ray diffracting spectrum is shown in Fig. 1, itself and standard card PDF
#The peak type of 72-1937 is consistent, for the calcite structure, belongs to hexagonal system; The crystallization of sharp-pointed characteristic diffraction peak interpret sample is more complete, and in collection of illustrative plates, the inclusion-free peak exists, and proves that product has quite high purity.With scanning electron microscope, calcium carbonate powder is characterized, the pattern of result demonstration calcium carbonate can be simulated the special microtexture of cotton, sees Fig. 3.
(1) calcium acetate is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add Stigma Maydis, wherein the concentration of calcium acetate solution is 0.2mol/L, and the quality of Stigma Maydis is 12g;
(2) calcium acetate solution is heated to 90 ℃, fully stir calcium acetate solution, the solution of potassium carbonate that is 0.2mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 24h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of Stigma Maydis;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 24h in the loft drier of 50 ℃;
(4) dried sample is placed in to retort furnace and carries out 500 ℃ of high-temperature calcination 12h, namely obtain being assembled into the nano-calcium carbonate of Stigma Maydis microtexture.
Embodiment 4.
(1) calcium chlorate is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add Stigma Maydis, wherein the concentration of calcium chlorate solution is 1mol/L, and the quality of Stigma Maydis is 18g;
(2) calcium chlorate solution is heated to 120 ℃, fully stir calcium chlorate solution, the solution of potassium carbonate that is 1mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 24h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of Stigma Maydis;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 24h in the loft drier of 60 ℃;
(4) dried sample is placed in to retort furnace and carries out 500 ℃ of high-temperature calcination 6h, namely obtain being assembled into the nano-calcium carbonate of Stigma Maydis microtexture.
Embodiment 5.
(1) calcium chloride and nitrocalcite (mass ratio is 1:1) 1L are dissolved in deionized water, stir and make its whole dissolvings, and add cotton, wherein the total concn of calcium salt soln is 2mol/L, and the quality of cotton is 20g;
(2) calcium salt soln is heated to 120 ℃, fully stir calcium salt soln, the solution of potassium carbonate that is 2mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 24h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of cotton;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 12h in the loft drier of 70 ℃;
(4) dried sample is placed in to retort furnace and carries out 550 ℃ of high-temperature calcination 8h, namely obtain being assembled into the nano-calcium carbonate of cotton microtexture.
Embodiment 6.
(1) Calcium Bromide is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add chalina, wherein the concentration of calcium bromide solution is 0.005mol/L, and the quality of chalina is 4g;
(2) calcium bromide solution is heated to 50 ℃, fully stir calcium bromide solution, the sodium carbonate solution that is 0.005mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 24h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of chalina;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 12h in the loft drier of 60 ℃;
(4) dried sample is placed in to retort furnace and carries out 350 ℃ of high-temperature calcination 8h, namely obtain being assembled into the nano-calcium carbonate of chalina microtexture, see Fig. 5 and accompanying drawing 7.
Embodiment 7.
(1) calcium iodide is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add chalina, wherein the concentration of calcium iodide solution is 0.05mol/L, and the quality of chalina is 9g;
(2) calcium iodide solution is heated to 70 ℃, fully stir calcium iodide solution, the sal volatile that is 0.05mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 48h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of chalina;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 12h in the loft drier of 70 ℃;
(4) dried sample is placed in to retort furnace and carries out 450 ℃ of high-temperature calcination 14h, namely obtain being assembled into the nano-calcium carbonate of chalina microtexture.
Embodiment 8.
(1) calcium chlorate is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add the lotus dish, wherein the concentration of calcium chlorate solution is 0.1mol/L, and the quality of lotus dish is 15g;
(2) calcium chlorate solution is heated to 60 ℃, fully stir calcium chlorate solution, the solution of potassium carbonate that is 0.1mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 72h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of lotus dish;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 24h in the loft drier of 65 ℃;
(4) dried sample is placed in to retort furnace and carries out 500 ℃ of high-temperature calcination 6h, namely obtain being assembled into the nano-calcium carbonate of lotus dish microtexture.
Embodiment 9.
(1) calcium chlorate and nitrocalcite (mass ratio is 1:1) are dissolved in the 1L deionized water, stir and make its whole dissolvings, and add the lotus dish, wherein the total concn of calcium salt soln is 2mol/L, and the quality of lotus dish is 20g;
(2) calcium salt soln is heated to 80 ℃, fully stir calcium salt soln, the solution of potassium carbonate that is 2mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 72h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of lotus dish;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 36h in the loft drier of 40 ℃;
(4) dried sample is placed in to retort furnace and carries out 550 ℃ of high-temperature calcination 12h, namely obtain being assembled into the nano-calcium carbonate of lotus dish microtexture.
(1) calcium acetate is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add chalina, wherein the concentration of calcium acetate solution is 3mol/L, and the quality of chalina is 30g;
(2) calcium acetate solution is heated to 120 ℃, fully stir calcium acetate solution, the salt of wormwood and sodium carbonate (mol ratio the is 1:1) solution that by 1L concentration, are 3mol/L dropwise add wherein, continue to keep stirring and constant temperature 72h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of chalina;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 30h in the loft drier of 65 ℃;
(4) dried sample is placed in to retort furnace and carries out 500 ℃ of high-temperature calcination 22h, namely obtain being assembled into the nano-calcium carbonate of chalina microtexture.
Embodiment 11.
(1) calcium chloride is dissolved in the 1L deionized water, stirs and make its whole dissolvings, and add leaf, wherein the concentration of calcium chloride solution is 1.5mol/L, and the quality of leaf is 15g;
(2) calcium chloride solution is heated to 55 ℃, fully stir calcium chloride solution, the sal volatile that is 1.5mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 48h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of leaf;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 24h in the loft drier of 55 ℃;
(4) dried sample is placed in to retort furnace and carries out 300 ℃ of high-temperature calcination 22h, namely obtain being assembled into the nano-calcium carbonate of leaf microtexture.
Embodiment 12.
(1) calcium chlorate is dissolved in the 1L deionized water, stirs and make its whole dissolvings, add therein leaf, wherein the concentration of calcium chlorate solution is 2mol/L, and the quality of leaf is 25g;
(2) calcium chlorate solution is heated to 75 ℃, fully stir calcium chlorate solution, the sal volatile that is 2mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 36h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of leaf;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 30h in the loft drier of 60 ℃;
(4) dried sample is placed in to retort furnace and carries out 400 ℃ of high-temperature calcination 18h, namely obtain being assembled into the nano-calcium carbonate of leaf microtexture.
Embodiment 13.
(1) calcium iodide and Calcium Bromide (mass ratio is 1:1) 1L are dissolved in deionized water, stir and make its whole dissolvings, and add floral disc of sunflower into, wherein the total concn of calcium salt soln is 3.5mol/L, and the quality of floral disc of sunflower into is 40g;
(2) calcium salt soln is heated to 85 ℃, fully stir calcium salt soln, the sal volatile that is 3.5mol/L by 1L concentration dropwise adds wherein, continues to keep stirring and constant temperature 72h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of floral disc of sunflower into;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 36h in the loft drier of 70 ℃;
(4) dried sample is placed in to retort furnace and carries out 450 ℃ of high-temperature calcination 15h, namely obtain being assembled into the nano-calcium carbonate of floral disc of sunflower into microtexture.
Embodiment 14.
(1) nitrocalcite is dissolved in the 1L deionized water, stirs and make its whole dissolvings, add therein floral disc of sunflower into, wherein the concentration of ca nitrate soln is 4mol/L, and the quality of floral disc of sunflower into is 50g;
(2) ca nitrate soln is heated to 120 ℃, fully stir calcium salt soln, the sodium carbonate and volatile salt (ratio of amount of substance the is 1:2) solution that by 1L concentration, are 4mol/L dropwise add wherein, continue to keep stirring and constant temperature 72h, during this period, have nano-calcium carbonate and generate and be assembled into the special microtexture of floral disc of sunflower into;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, dry 36h in the loft drier of 70 ℃;
(4) dried sample is placed in to retort furnace and carries out 550 ℃ of high-temperature calcination 24h, namely obtain being assembled into the nano-calcium carbonate of floral disc of sunflower into microtexture.
Claims (6)
1. preparation method who is assembled into the nano-calcium carbonate of plant microtexture comprises the following steps:
(1) soluble calcium salt is dissolved in deionized water, stirs and make its whole dissolvings, add therein the plant template, wherein the concentration of calcium salt soln is 0.005～4mol/L, and the quality of plant template is 1～50g;
(2) calcium salt soln is heated to 30～120 ℃, and fully stir calcium salt soln, and carbonate solution is dropwise added wherein, allow whole system continue to keep stirring and constant temperature 9～72h, during this period, having the nano-calcium carbonate that can be assembled into the special microtexture of plant generates;
(3) filter the thick product solution that (2) obtain, collect filter residue, use the deionized water washes clean, be placed on drying 12～36h in the loft drier of 35～70 ℃;
(4) dried sample is placed in to 300～550 ℃ of high-temperature calcination 6～24h of retort furnace, namely obtains being assembled into the nano-calcium carbonate of plant microtexture.
2. the method for preparing nano-calcium carbonate take plant as template according to claim 1 is characterized in that: soluble calcium salt is a kind of in calcium chloride, nitrocalcite, calcium acetate, Calcium Bromide, calcium iodide, calcium chlorate.
3. the method for preparing nano-calcium carbonate take plant as template according to claim 1 is characterized in that: soluble carbonate salt is a kind of in sodium carbonate, volatile salt, salt of wormwood.
4. the method for preparing nano-calcium carbonate take plant as template according to claim 1, it is characterized in that: the plant template is dried cotton, chalina, leaf, Stigma Maydis, lotus dish, floral disc of sunflower into.
5. the nano-calcium carbonate that is assembled into the plant microtexture for preparing as the described method of right claim 1～4 any one, it is characterized in that: described nano-calcium carbonate crystalline form is calcite, particle diameter is 40～60nm, and nano-calcium carbonate can be assembled into the microtexture of plant template.
6. the purposes that is assembled into the nano-calcium carbonate of plant microtexture as claimed in claim 5, it is characterized in that: described nano-calcium carbonate is mainly used in Adsorption of Heavy Metal Ions Pb
2+, Cd
2+, Co
2+, Mn
2+, Ni
2+, Cr
3+, Zn
2+, Cu
2+.
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| CN114149020A (en) * | 2021-12-27 | 2022-03-08 | 成都理工大学 | Method for preparing calcite from plant slurry |
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| CN113213632A (en) * | 2021-06-15 | 2021-08-06 | 萍乡学院 | Nano-hydroxyapatite loofah sponge composite filler and preparation method and application thereof |
| CN113213632B (en) * | 2021-06-15 | 2022-11-25 | 萍乡学院 | Nano-hydroxyapatite loofah sponge composite filler and preparation method and application thereof |
| CN114149020A (en) * | 2021-12-27 | 2022-03-08 | 成都理工大学 | Method for preparing calcite from plant slurry |
| CN114149020B (en) * | 2021-12-27 | 2023-03-03 | 成都理工大学 | Method for preparing calcite from plant slurry |
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