Multifunctional complex material for ammonia visual monitoring and preparation method and application thereof

Abstract

The present application belongs to the technical field of complex materials, and relates to a multifunctional complex material for visual monitoring of ammonia, a preparation method and application thereof.The multifunctional complex material for visual monitoring of ammonia prepared by the present application has a chemical formula of Na2Cu(C6S2O6NH5)2(H2O)2.The present application further provides a preparation method of the multifunctional complex material.The multifunctional complex material prepared has excellent antibacterial performance, ultraviolet absorption performance and reversible ammonia response color change performance, can be reused, and has a simple preparation process, is environment-friendly, is low in cost, is suitable for large-scale production, and has a wide application prospect in the fields of visual monitoring of ammonia, antibacterial materials, ultraviolet absorption materials and environmental safety.

Description

Technical Field

[0001] This invention belongs to the field of coordination material technology, specifically relating to multifunctional coordination materials that can be used for visual monitoring of ammonia, their preparation methods, and applications. Background Technology

[0002] Coordination materials are a class of crystalline materials with varying dimensional structures formed by valence bonds between metal ion centers and organic ligands. Due to their structural diversity and ease of modification, coordination materials have broad application prospects in gas storage, optoelectronic materials, magnetic materials, antibacterial materials, and catalysis. Multifunctional coordination materials possessing both ammonia-responsive and antibacterial properties show great promise in gas sensing, environmental safety, biomedicine, and anti-counterfeiting. Therefore, developing multifunctional coordination materials with both antibacterial and ammonia-responsive color-changing properties has become a current research hotspot. Summary of the Invention

[0003] Based on the above background, this invention provides a multifunctional complex material for visual monitoring of ammonia, its preparation method, and its application. The multifunctional complex material prepared by this invention for visual monitoring of ammonia exhibits excellent antibacterial properties, ultraviolet absorption properties, and reversible ammonia-responsive color change properties. It can be reused, and the preparation process is simple, environmentally friendly, low-cost, and suitable for scale-up production.

[0004] Technical solution of the present invention:

[0005] A multifunctional complex material for visual monitoring of ammonia gas has the chemical formula Na2Cu(C6S2O6NH5)2(H2O)2, where C6S2O6NH5 is the 2-amino-1,4-benzenedisulfonic acid anion. This multifunctional complex material belongs to the monoclinic crystal system, with space group P 21 / c, and cell parameters as follows: a = 10.1679(5) Å, b = 18.2485(9) Å, c = 5.7556(3) Å, α = 90°, β = 101.752(6)°, γ = 90°, λ = 0.71073 Å, V = 1045.41(9) Å. 3 The crystallographic data are shown in Table 1. The structural unit of this multifunctional complex consists of one copper ion and two sodium ions as metal centers, connected to two 2-amino-1,4-benzenedisulfonic acid anions and two coordinated water molecules, and forms a three-dimensional framework structure through the bridging effect of sulfonic acid groups.

[0006] Table 1 Crystallographic data of multifunctional coordination materials

[0007] Formula <![CDATA[C 12 H 14 N2Na2S4CuO 14 ]]> Mr 648.03 Crystal system Monoclinic Space group <![CDATA[P 21 / c]]> a (Å) 10.1679(5) b (Å) 18.2458(9) c (Å) 5.7556(3) α (°) 90° β (°) 101.752(6)° γ (°) 90° <![CDATA[V (Å 3 )]]> 1045.41(9) F(000) 660.0 Z 2 <![CDATA[Dx (g cm –3 )]]> 2.059 <![CDATA[μ (mm –1 )]]> 1.565 θ range (°) 3.784- 29.108 Ref. meas. / indep. 4531 Obs. ref. 2384 <![CDATA[R int ]]> 0.0251 <![CDATA[R1 a ]]> 0.0337 <![CDATA[wR2(all data) b ]]> 0.0901 Goof 1.030 <![CDATA[Δρ(max, min) (e Å -3 )]]> 0.42, -0.67

[0008] aR1 = Σ||F o | – |F c || / Σ|F o | b wR2 = 1 / 2 .

[0009] A method for preparing a multifunctional complex material that can be used for visual monitoring of ammonia includes the following steps:

[0010] (1) Dissolve 28 parts by mass of copper acetate monohydrate in 1500 parts by mass of deionized water to obtain a homogeneous copper acetate solution for later use.

[0011] (2) Dissolve 10 parts by weight of 2-amino-1,4-benzenedisulfonic acid monosodium salt in 1500 parts by weight of deionized water to obtain a homogeneous solution for later use.

[0012] (3) Add the solution obtained in step (2) to the copper acetate solution obtained in step (1) and stir at room temperature for 1 hour to obtain a homogeneous blend solution;

[0013] (4) The blend solution obtained in step (3) above is sealed in a beaker with plastic wrap and then placed in an oven at 80°C for 48 hours. After that, it is cooled to room temperature, filtered, washed and dried to obtain a multifunctional complex material that can be used for visual monitoring of ammonia.

[0014] The beneficial effects of this invention are as follows:

[0015] The multifunctional complex material prepared by this invention, which can be used for visual monitoring of ammonia, has excellent antibacterial properties, ultraviolet absorption properties, and reversible ammonia-responsive color change properties. It can be reused, and the preparation process is simple, environmentally friendly, and low-cost. It is also suitable for large-scale production and has broad application prospects in the fields of visual monitoring of ammonia, antibacterial materials, ultraviolet absorption materials, and environmental safety. Attached Figure Description

[0016] Figure 1 This is a crystal structure unit diagram of the multifunctional coordination material prepared in this invention;

[0017] Figure 2 This is a three-dimensional framework structure diagram of the multifunctional coordination material prepared in this invention;

[0018] Figure 3 Photographs of the antibacterial activity of the multifunctional complex material prepared in this invention against Escherichia coli.

[0019] Figure 4 Photographs of the antibacterial activity of the multifunctional complex material prepared for this invention against Staphylococcus aureus;

[0020] Figure 5 The image shows the UV-Vis absorption spectrum of the multifunctional complex material prepared in this invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments.

[0022] Example:

[0023] A multifunctional complex material for visual monitoring of ammonia gas has the chemical formula Na2Cu(C6S2O6NH5)2(H2O)2, where C6S2O6NH5 is the 2-amino-1,4-benzenedisulfonic acid anion. This multifunctional complex material belongs to the monoclinic crystal system, with space group P 21 / c, and cell parameters: a = 10.1679(5) Å, b = 18.2485(9) Å, c = 5.7556(3) Å, λ = 0.71073 Å, V = 1045.41(9) Å. 3 The crystallographic data are shown in Table 1. The structural unit of this multifunctional complex consists of one copper ion and two sodium ions as metal centers, connected to two 2-amino-1,4-benzenedisulfonic acid anions and two coordinated water molecules, and forms a three-dimensional framework structure through the bridging effect of sulfonic acid groups.

[0024] The preparation method of the above-mentioned multifunctional complex material that can be used for visual monitoring of ammonia includes the following steps:

[0025] (1) Dissolve 28 parts by mass of copper acetate monohydrate in 1500 parts by mass of deionized water to obtain a homogeneous copper acetate solution for later use.

[0026] (2) Dissolve 10 parts by weight of 2-amino-1,4-benzenedisulfonic acid monosodium salt in 1500 parts by weight of deionized water to obtain a homogeneous solution for later use.

[0027] (3) Add the solution obtained in step (2) to the copper acetate solution obtained in step (1) and stir at room temperature for 1 hour to obtain a homogeneous blend solution;

[0028] (4) The blend solution obtained in step (3) above is sealed in a beaker with plastic wrap and then placed in an oven at 80°C for 48 hours. After that, it is cooled to room temperature, filtered, washed and dried to obtain a multifunctional complex material that can be used for visual monitoring of ammonia.

[0029] Performance testing and applications:

[0030] The multifunctional complex material prepared in the embodiments of the present invention is green in color. After being exposed to an ammonia environment for 30 seconds, its color changes to blue, indicating that the multifunctional complex material has excellent ammonia-responsive color-changing properties. In addition, when the multifunctional complex material that has turned blue is placed in an environment with a relative humidity of 90%, its color can be restored to green. After being exposed to an ammonia environment for another 30 seconds, its color changes back to blue, indicating that the multifunctional complex material prepared in the embodiments of the present invention has reversible ammonia-responsive color-changing properties and can be reused.

[0031] The multifunctional complex material prepared in the embodiments of this invention has the chemical formula Na2Cu(C6S2O6NH5)2(H2O)2 and is green in color. After being exposed to an ammonia environment for 30 seconds, its color changes to blue, indicating that the multifunctional complex material has undergone a structural transformation after the color change in response to ammonia. Therefore, X-ray single-crystal diffraction analysis was performed on the complex material that turned blue, and the results showed that its chemical formula is Na2Cu(C6S2O6NH5)2(NH3)2. It can be seen that, in the multifunctional complex material prepared in the embodiments of this invention, after being placed in an ammonia environment, two coordinated water molecules in it are transformed into two coordinated ammonia molecules. This changes the coordination environment between the central sodium ion and the copper ion, thereby causing the multifunctional complex material to change from the initial green to blue after the response to ammonia.

[0032] The antibacterial properties of the multifunctional complex materials prepared in the examples were evaluated using the inhibition zone antibacterial activity test method. The results showed that the multifunctional complex materials prepared in the examples of this invention exhibited obvious inhibition zones against both *Escherichia coli* and *Staphylococcus aureus* (see...). Figure 3 and Figure 4 This indicates that the multifunctional complex material has excellent antibacterial effects.

[0033] The UV-Vis properties of the materials were evaluated using a UV-Vis spectrometer (Lamdba365, Platinum Elmer Instruments). Figure 5 The image shows the UV-Vis absorption spectrum of the multifunctional complex material prepared in the embodiments of this invention. The results indicate that the multifunctional complex material has significant UV absorption properties.

[0034] In summary, the multifunctional complex material prepared by this invention for visual monitoring of ammonia exhibits excellent antibacterial properties, ultraviolet absorption properties, and reversible ammonia-responsive color change properties. It can be reused, and the preparation process is simple, environmentally friendly, and low-cost, and suitable for large-scale production. It has broad application prospects in the fields of visual monitoring of ammonia, antibacterial materials, ultraviolet absorption materials, and environmental safety.

[0035] The content of this invention is not limited to the embodiments listed. Any equivalent modifications made by those skilled in the art to the technical solutions of this invention by reading this specification are covered by the claims of this invention.

Claims

1. A multifunctional complex material that can be used for visual monitoring of ammonia, characterized in that, The chemical formula of the multifunctional complex material is Na2Cu(C6S2O6NH5)2(H2O)2, where C6S2O6NH5 is a 2-amino-1,4-benzenedisulfonic acid anion. This multifunctional complex material belongs to the monoclinic crystal system, with space group P 21 / c, and cell parameters: a = 10.1679(5) Å, b = 18.2485(9) Å, c = 5.7556(3) Å, α = 90°, β = 101.752(6)°, γ = 90°, V = 1045.41(9) Å. 3 The structural unit of this multifunctional complex consists of one copper ion and two sodium ions as metal centers, connected to two 2-amino-1,4-benzenedisulfonic acid anions and two coordinated water molecules, and forms a three-dimensional framework structure through the bridging effect of sulfonic acid groups.

2. The method for preparing the multifunctional complex material for visual monitoring of ammonia according to claim 1, characterized in that... Includes the following steps: (1) Dissolve 28 parts by mass of copper acetate monohydrate in 1500 parts by mass of deionized water to obtain a homogeneous copper acetate solution for later use. (2) Dissolve 10 parts by weight of 2-amino-1,4-benzenedisulfonic acid monosodium salt in 1500 parts by weight of deionized water to obtain a homogeneous solution for later use. (3) Add the solution obtained in step (2) to the copper acetate solution obtained in step (1) and stir at room temperature for 1 h to obtain a homogeneous blend solution; (4) The blend solution obtained in step (3) above is sealed in a beaker with plastic wrap and then placed in an oven at 80°C for 48 hours. After that, it is cooled to room temperature, filtered, washed and dried to obtain a multifunctional complex material that can be used for visual monitoring of ammonia.

3. The application of the multifunctional complex material for visual monitoring of ammonia gas according to claim 1, characterized in that, Used for visual monitoring of ammonia, antibacterial materials, and ultraviolet absorption materials.

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