Carbon quantum dot corrosion inhibitor for cage framework metal base material in three-dimensional poultry cage culture disinfectant water environment as well as preparation and application of carbon quantum dot corrosion inhibitor

Abstract

The invention belongs to the field of corrosion inhibition of cage framework metal base materials in a three-dimensional poultry cage culture disinfectant water environment. The invention specifically designs a carbon quantum dot corrosion inhibitor for a cage skeleton metal base material in a three-dimensional poultry cage culture disinfectant water environment, and preparation and application thereof, and the particle size of the synthesized carbon quantum dot is 8-10 nm (figure 1). The carbon quantum dot corrosion inhibitor for the cage skeleton metal base material in the water environment of the three-dimensional poultry cage culture disinfectant is obtained by mixing glucose and thiourea according to a certain proportion as raw materials and pure water as a solvent through stirring, dissolving, microwave treatment, centrifugation, dialysis and drying (Figure 2). The carbon quantum dot corrosion inhibitor for the cage skeleton metal base material in the water environment of the three-dimensional poultry cage culture disinfectant has the characteristics of simplicity and convenience in preparation, environment-friendly raw materials, abundant raw material sources, low cost, high yield, good corrosion inhibition effect, no influence on the disinfectant and the like; the corrosion inhibitor can be widely applied to corrosion inhibition of cage skeleton metal substrates in a three-dimensional poultry cage culture disinfectant water environment.

Description

Technical Field

[0001] This invention relates to the field of corrosion inhibition of metal substrates for cage frames in the disinfectant water environment of three-dimensional poultry cage rearing, specifically to the design, preparation, and application of a carbon quantum dot corrosion inhibitor for metal substrates for cage frames in the disinfectant water environment of three-dimensional poultry cage rearing. Background Technology

[0002] With the rapid development of my country's livestock farming industry, more and more farms have implemented standardized and intensive feeding management. Many poultry houses adopt dense, three-dimensional cage-raising methods to save space and facilitate management. However, three-dimensional cage-raising increases poultry stocking density and raises the risk of disease transmission. Centralized disinfection is the most effective measure for disease prevention and control; therefore, the use of disinfectants is an essential part of the farming process. However, it is necessary to address the corrosion of metal substrates such as low-carbon steel and copper used in the cage frames of three-dimensional poultry houses by disinfectants. Currently, the corrosion inhibitors used in disinfectants for metal substrates are mainly organic compounds containing heteroatoms such as nitrogen, phosphorus, oxygen, and sulfur. However, most organic corrosion inhibitors have a certain degree of toxicity, posing a significant threat to the environment and potentially affecting disinfection effectiveness, thus limiting their application. Therefore, without affecting the disinfection effect of disinfectants, corrosion inhibition technology for the metal substrates of cage frames in the disinfectant-treated water environment of three-dimensional poultry houses has become an urgent need. Therefore, it is extremely important to develop low-cost, green, non-toxic, and environmentally friendly carbon quantum dot corrosion inhibitors for use in the water environment of cage-raising poultry houses. Summary of the Invention

[0003] To address the shortcomings of existing organic corrosion inhibitors for metal substrates of cage frames in disinfectant-treated water environments for multi-level poultry cage rearing, such as complex synthesis processes, environmental pollution, and toxicity, the present invention aims to provide a class of carbon quantum dot-based corrosion inhibitors for metal substrates that are readily available from raw materials, low in cost, quick to prepare, environmentally friendly, high in yield, and have good corrosion inhibition effects. These inhibitors can be used in various disinfectant-treated water environments, such as in aqueous solutions of sodium dichloroisocyanurate, potassium persulfate, and glutaraldehyde. The objective of this invention is achieved as follows: A class of carbon quantum dot corrosion inhibitors for metal substrates of cage frames in disinfectant-treated water environments for multi-level poultry cage rearing, characterized in that the target carbon quantum dots obtained from the raw materials in the following mass ratio are used as the active ingredient: 1-2 g of glucose Thiourea 0.5-1 g In addition, 10-50 g of distilled water is used as the reaction solvent. A method for preparing a carbon quantum dot-based corrosion inhibitor for use in the metal substrate of a cage frame in a disinfectant-treated aquatic environment for three-dimensional poultry cage rearing, as described in claim 1, is characterized by comprising the following steps: ① Dissolving: Take glucose and thiourea according to the mass ratio described in claim 1, dissolve them in distilled water, and stir to form a clear solution.

[0004] ② Ultrasonic dispersion: The solution obtained in step ① is ultrasonically dispersed.

[0005] ③ Microwave: Place the sonicated solution from step ② in a microwave oven and heat for 5 minutes to obtain a brown solid.

[0006] ④ Redissolution: After cooling the obtained brown solid to room temperature, add distilled water to dissolve it into a dark brown solution.

[0007] ⑤ Centrifugation: Centrifuge the resulting dark brown solution in a centrifuge for 15 minutes to remove the precipitate and collect the supernatant.

[0008] ⑥ Vacuum filtration and drying: The purified solution from step ⑥ is subjected to vacuum drying to separate the filtrate and filter residue; the filtrate is then vacuum dried at 60 °C for 12 hours to obtain carbon quantum dots for corrosion inhibition of the metal substrate of cage frame in a disinfectant-treated water environment for three-dimensional poultry cage rearing. Compared with the prior art, the present invention has the following advantages: 1. The carbon quantum dot corrosion inhibitor for low-carbon steel and copper in the three-dimensional poultry house cage frame of the present invention is prepared from glucose and thiourea mixed in a specific mass ratio as starting materials. It can form a dense adsorption layer on the surface of low-carbon steel and copper, effectively preventing the contact between the disinfectant medium and the low-carbon steel and copper, thereby playing an anti-corrosion role for low-carbon steel and copper. It can be widely used in the field of corrosion inhibition of low-carbon steel and copper.

[0009] 2. The low-carbon steel and copper corrosion-inhibiting carbon quantum dots of the present invention used for the three-dimensional poultry house cage frame are made from glucose and thiourea, which are inexpensive, readily available, and environmentally friendly.

[0010] 3. The preparation method of the low-carbon steel and copper carbon quantum dot corrosion inhibitor for the three-dimensional poultry house cage frame of the present invention has the characteristics of being simple, fast and having a high yield. Attached Figure Description Figure 1 These are transmission electron microscope images and particle size images of carbon quantum dots from this invention. Figure 2 This is a flowchart of the carbon quantum dot preparation process of the present invention. Figure 3 This is a scanning electron microscope image of the low-carbon steel frame of the three-dimensional poultry house cage in Example 2 after corrosion in a 0.2 wt% sodium dichloroisocyanurate aqueous solution. Figure 3 3-1 in the figure is a reference sample of low-carbon steel that has just been polished and ground. Figure 3-2 The sample is a low-carbon steel sample that has been immersed in a blank 0.2 wt% sodium dichloroisocyanurate aqueous solution for 6 hours. Figure 3-3The sample is a low-carbon steel sample that has been immersed in an aqueous solution of 0.2 wt% sodium dichloroisocyanurate containing the carbon quantum dots of the present invention for 6 hours. Figure 4 This is a scanning electron microscope image of the low-carbon steel of the three-dimensional poultry house cage frame in Example 3 after corrosion in a 1 wt% potassium persulfate aqueous solution. Figure 3 4-1 in the figure is a copper reference sample that has just been polished. Figure 4-2 The sample is a low-carbon steel sample that has been soaked in a 1 wt% potassium persulfate solution for 6 hours. Figure 4-3 The sample is a low-carbon steel sample that has been immersed in a 1 wt% potassium persulfate solution containing the carbon quantum dot corrosion inhibitor of the present invention for 6 hours. Figure 5 This is a scanning electron microscope image of the copper in the three-dimensional poultry house cage frame of Example 4 after corrosion in a 0.2 wt% sodium dichloroisocyanurate aqueous solution. Figure 5 5-1 in the figure is a copper reference sample that has just been polished. Figure 5-2 The copper sample was immersed in a blank 0.2wt% sodium dichloroisocyanurate aqueous solution for 6 hours. Figure 5-3 The copper sample was immersed in an aqueous solution of 0.2 wt% sodium dichloroisocyanurate containing the carbon quantum dot corrosion inhibitor of the present invention for 6 hours. Figure 6 This is a scanning electron microscope image of the copper in the three-dimensional poultry house cage frame of Example 5 after corrosion in a 1 wt% potassium persulfate aqueous solution. Figure 3 4-1 in the figure is a copper reference sample that has just been polished. Figure 4-2 The copper sample was soaked in a 1 wt% potassium persulfate solution for 6 hours. Figure 4-3 The copper sample was immersed in a 1 wt% potassium persulfate solution containing the carbon quantum dot corrosion inhibitor of the present invention for 6 hours.

Claims

1. Characterized by, The target carbon quantum dots prepared from the raw materials in the following mass ratio are used as the active ingredient: 1-2 g of glucose Thiourea 0.5-1 g In addition, 10-50 g of distilled water is used as the reaction solvent.

2. A method for preparing a carbon quantum dot corrosion inhibitor for the metal substrate of a cage frame in a disinfectant-treated aquatic environment for three-dimensional poultry cage rearing, as described in claim 1, characterized in that... Includes the following steps: ① Dissolution: Weigh glucose and thiourea according to the proportions described in claim 1, then dissolve them in distilled water and stir to form a clear aqueous solution. ② Ultrasonication: Disperse the solution obtained in step ① using ultrasound. ③ Microwave: Heat the solution obtained in step ② in a microwave oven for 5 minutes to obtain a brown solid. ④ Redissolution: After cooling the obtained brown solid to room temperature, dissolve it in distilled water to form a dark brown solution. ⑤ Centrifugation: Centrifuge the obtained dark brown solution in a centrifuge for 15 minutes to remove particulate precipitate and collect the supernatant. ⑥ Vacuum filtration and drying: Vacuum dry the purified solution from step ⑥ to obtain filtrate and filter residue; vacuum dry the filtrate at 60 °C for 12 hours to obtain carbon quantum dots for corrosion inhibition of the metal substrate of cage frame in a water environment for poultry house rearing.

Images