Universal auxiliary device for three-dimensional mesoporous gold substrate

Abstract

The utility model relates to the technical field of detection, and discloses a universal three-dimensional mesoporous gold substrate and an auxiliary device thereof, the universal three-dimensional mesoporous gold substrate comprises a silicon wafer, and a three-dimensional mesoporous gold film is attached to the side surface of the silicon wafer. The universal three-dimensional mesoporous gold substrate is prepared from the three-dimensional mesoporous gold film, and the three-dimensional mesoporous gold film is uniformly spread on the surfaces of quartz and monocrystalline silicon, uniform in microstructure and high in specific surface area, has excellent response signals when being used as an SERS (Surface Enhanced Raman Scattering) substrate, has highly consistent Raman enhancement effects in different regions, and is good in detection repeatability; 3D-Au has a plasma resonance effect (SPR) in a wide spectral range, and can generate obvious SERS response under the irradiation of laser from an ultraviolet region to a near-infrared region (325-1442nm); and on the other hand, the auxiliary device of the universal three-dimensional mesoporous gold substrate can realize accurate positioning of the detection substrate through the matching of the positioning ring and the positioning circular bulge, and the positioning ring and the positioning circular bulge are convenient for human eye observation and verification.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, specifically to a general-purpose three-dimensional mesoporous gold substrate and its auxiliary device. Background Technology

[0002] With rapid economic and social development, people are releasing large amounts of toxic and harmful substances into the environment, seriously threatening the survival and health of humans and other living organisms. Among these substances are organophosphorus and polycyclic aromatic hydrocarbons (PAHs), widely used in agriculture and industry (as pesticides, fungicides, plasticizers, and flame retardants). These compounds are listed as priority pollutants by environmental monitoring departments, and their toxic effects have become one of the most representative pollution problems globally (priority pollutants), especially in water bodies. Achieving rapid quantitative detection of these pollutants is of great significance for the green and sustainable development of society (especially high-end manufacturing). However, traditional detection methods have limitations in sensitivity and selectivity.

[0003] Since its inception in the 1970s, surface Raman spectroscopy has seen significant applications in many fields, particularly in pollutant detection and analysis. Surface Raman Enhancement Spectroscopy (SERS), as a spectroscopic analysis technique, significantly enhances the Raman signal of target samples (by 10⁶-10¹⁰ times) through the action of plasmon resonances, and under certain conditions, can even achieve single-molecule detection levels. Its detection characteristics enable rapid, real-time, non-destructive, and accurate qualitative and quantitative analysis of low-concentration samples.

[0004] The efficient application of SERS technology largely depends on the SERS substrate. However, existing commercial SERS substrates have many problems, which seriously limit the development and practical application of this technology. Therefore, there is an urgent need for a detection method with an SERS substrate. Utility Model Content

[0005] The present invention aims to at least partially solve one of the technical problems in the aforementioned related technologies.

[0006] Therefore, the present invention specifically provides the following technical solution:

[0007] A general-purpose three-dimensional mesoporous gold substrate includes a silicon wafer, wherein a three-dimensional mesoporous gold thin film is attached to the side surface of the silicon wafer.

[0008] An auxiliary device for a general-purpose three-dimensional mesoporous gold substrate includes a detection substrate and a detection groove. The detection groove is formed on a portable Raman wastewater detector, and the detection substrate is movably nested within the detection groove.

[0009] The detection substrate comprises a main plate and the three-dimensional mesoporous gold substrate, and a reaction pool is formed on the insertion end of the main plate, and the three-dimensional mesoporous gold substrate is arranged in the reaction pool.

[0010] Preferably, the edge of the detection groove is provided with a positioning ring, and a positioning convex is movably arranged on the main plate and movably arranged in the positioning ring.

[0011] Preferably, a sliding groove perpendicular to the extension direction of the main plate is formed on the main plate, the positioning convex is slidably arranged in the sliding groove, and the bottom end of the sliding groove is connected with the positioning convex through an elastic member.

[0012] Preferably, the elastic member is a spring.

[0013] Preferably, a progress groove is arranged on the main plate, and a resistance strip is arranged on the detection groove.

[0014] Preferably, the cross section of the progress groove is triangular.

[0015] The resistance strip is arranged in a shape matched with the shape of the progress groove.

[0016] Preferably, the resistance strip is a rubber strip fixed on the inner wall of the detection groove.

[0017] Preferably, a plurality of progress grooves are evenly arranged on the side surface of the main plate at equal intervals, and the rubber strip is engaged with one of the progress grooves.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The three-dimensional mesoporous gold film is used to manufacture the universal three-dimensional mesoporous gold substrate, the three-dimensional mesoporous gold film is uniformly spread on the surface of quartz and monocrystalline silicon and has uniform microstructure, has high specific surface area, has excellent response signal when being used as a SERS base, the Raman enhancement effect of different regions is highly consistent, and detection repeatability is good; 3D-Au has plasmon resonance effect (SPR) in a wide spectral range, and can produce obvious SERS response under ultraviolet to near infrared (325-1442nm) laser irradiation; on the other hand, the auxiliary device of the universal three-dimensional mesoporous gold substrate can realize accurate positioning of the detection substrate through the cooperation of the positioning ring and the positioning convex, and the positioning ring and the positioning convex are convenient for eye observation and verification. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0021] Figure 1 It is a structural schematic diagram of the three-dimensional mesoporous gold substrate in the present application.

[0022] Figure 2 It is a structural schematic diagram of the auxiliary device of the general three-dimensional mesoporous gold substrate in the present application.

[0023] Figure 3 It is an installation schematic diagram of the positioning convex.

[0024] Figure 4 It is an occlusion schematic diagram of the progress groove and the resistance strip.

[0025] In the drawings:

[0026] 1, portable Raman sewage detector; 2, detection groove; 3, detection substrate;

[0027] 21, positioning ring; 22, resistance strip;

[0028] 31, main plate; 32, reaction pool; 33, three-dimensional mesoporous gold substrate; 34, positioning convex; 35, sliding groove; 36, elastic member; 37, progress groove;

[0029] 321, silicon wafer; 322, three-dimensional mesoporous gold film. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] The concepts involved in the present application will be described below in combination with the drawings. It should be pointed out here that the following description of the concepts is only to make the content of the present application easier to understand, and does not mean a limitation on the protection scope of the present application; meanwhile, the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] This application provides a general-purpose three-dimensional mesoporous gold substrate, including a silicon wafer 321, on which a three-dimensional mesoporous gold thin film 322 is attached.

[0035] In this application, as Figure 1 As shown, for the specific method of preparing the three-dimensional mesoporous gold thin film 322, please refer to another application document with application number 202310831827.6.

[0036] The advantages of 3D mesoporous gold thin film 322 are:

[0037] The three-dimensional mesoporous gold thin film 322 is uniformly spread on the surface of quartz and single-crystal silicon and has a high specific surface area. When used as a SERS substrate, it has excellent response signal. The Raman enhancement effect in different regions is highly consistent and the detection repeatability is good. 3D-Au has a plasmonic resonance effect (SPR) in a wide spectral range and can produce obvious SERS response under laser irradiation in the ultraviolet to near-infrared region (325-1442nm).

[0038] In this application, to further address the alignment issue of the detection substrate 3 after insertion into the portable Raman wastewater detector 1: ... Figure 2As shown, the application also provides an auxiliary device of a general three-dimensional mesoporous gold substrate, which comprises a detection substrate 3 and a detection groove 2, the detection groove 2 is arranged on the portable Raman sewage detector 1, and the detection substrate 3 is movably nested in the detection groove 2; the detection substrate 3 comprises a main plate 31 and a three-dimensional mesoporous gold substrate 33 as described above, and a reaction pool 32 is arranged on the insertion end of the main plate 31, and the three-dimensional mesoporous gold substrate 33 is arranged in the reaction pool 32. The edge of the detection groove 2 is provided with a positioning ring 21, and a positioning circular convex 34 for movably embedding in the positioning ring 21 is movably arranged on the main plate 31.

[0039] Among them, the structure of the portable Raman sewage detector 1 can refer to the portable Raman sewage detector 1 in the prior art, such as the utility model patent with the application number 202320769902.6.

[0040] When the detection substrate 3 is inserted into the detection groove 2 by artificial, the position of the detection substrate 3 is limited by the detection groove 2, at this time, the positioning ring 21 and the positioning circular convex 34 are staggered and on the same straight line, with the insertion of the detection substrate 3, the positioning ring 21 and the positioning circular convex 34 are close to each other, then the positioning ring 21 and the positioning circular convex 34 are extruded, until the positioning ring 21 is sleeved on the positioning circular convex 34, the red pigment can be applied on the positioning circular convex 34 and the positioning ring 21 by artificial, so that the artificial can directly observe that the two are nested, thereby realizing the positioning of the two, and the advantage of this mode is that it is convenient for artificial naked eye observation.

[0041] In some embodiments of the application, as shown in the drawings, Figure 3 As shown, a sliding groove 35 perpendicular to the extension direction of the main plate 31 is arranged on the main plate 31, the positioning circular convex 34 is slidably embedded in the sliding groove 35, and the positioning circular convex 34 is connected to the sliding groove 35 through an elastic element 36 at the bottom end of the sliding groove 35. The elastic element 36 is a spring.

[0042] The surface of the positioning circular convex 34 is arc-shaped, when the positioning ring 21 and the positioning circular convex 34 are extruded, the arc-shaped surface of the positioning circular convex 34 will provide the power for the downward sliding of the positioning circular convex 34, so that the positioning circular convex 34 slides downward along the sliding groove 35, and the spring in the sliding groove 35 will be compressed, so that the positioning circular convex 34 no longer blocks the positioning ring 21, and then the positioning ring 21 is opposite to the positioning circular convex 34, and then the spring in the sliding groove 35 will push the positioning circular convex 34 into the positioning ring 21, completing the nesting of the two, and then completing the positioning of the detection substrate 3 in the portable Raman sewage detector 1.

[0043] In some embodiments of the application, as shown in the drawings, Figure 4As shown, the main plate 31 is provided with a progress groove 37, and the detection groove 2 is provided with a resistance strip 22. The cross section of the progress groove 37 is triangular; the resistance strip 22 is provided in a shape matching the shape of the progress groove 37. The resistance strip 22 is a rubber strip fixed on the inner wall of the slot of the detection groove 2. The progress groove 37 is provided with a plurality of progress grooves arranged evenly and equidistantly on the side of the main plate 31, and the rubber strip is engaged with one of the progress grooves 37.

[0044] On one hand, the progress groove 37 can increase the friction when holding, facilitating holding; on the other hand, when the main plate 31 is manually held and inserted into the detection groove 2, the resistance strip 22 on the detection groove 2 can provide a force resisting the insertion of the main plate 31 by engaging with the progress groove 37, preventing the device from being broken due to excessive force, and facilitating the operator to control the insertion force and insertion progress by overcoming the friction.

[0045] The above-described embodiments and / or implementations are only used to illustrate the preferred embodiments and / or implementations of the present application, and do not limit the embodiments of the present application in any form. Any person skilled in the art can make some changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the present application, but should be considered as the same technical or embodiment as the present application.

[0046] The principles and implementations of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method and its core idea. The above description is only the preferred embodiments of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures. For ordinary skilled persons in the art, without departing from the principles of the present application, some improvements, refinements or changes can be made, and the above technical features can be combined in an appropriate way. These improvements, refinements, changes or combinations, or the direct application of the present application to other occasions without improvement, should be considered as the protection scope of the present application.

Claims

1. An auxiliary device for a universal three-dimensional mesoporous gold substrate, characterized in that, It includes a detection substrate (3) and a detection groove (2), wherein the detection groove (2) is formed on a portable Raman wastewater detector (1), and the detection substrate (3) is movably nested in the detection groove (2); The detection substrate (3) includes a main plate (31) and a three-dimensional mesoporous gold substrate (33). A reaction cell (32) is provided on the insertion end of the main plate (31), and the three-dimensional mesoporous gold substrate (33) is disposed in the reaction cell (32). The edge of the detection groove (2) is provided with a positioning ring (21), and a positioning round protrusion (34) for being movably embedded in the positioning ring (21) is provided on the main body plate (31); A groove (35) perpendicular to the extension direction of the main body plate (31) is provided on the main body plate (31). The positioning round protrusion (34) is slidably embedded in the groove (35). The bottom end of the groove (35) is connected to the positioning round protrusion (34) through an elastic member (36).

2. The auxiliary device for the universal three-dimensional mesoporous gold substrate according to claim 1, characterized in that, The elastic element (36) is a spring.

3. The auxiliary device for the universal three-dimensional mesoporous gold substrate according to claim 1, characterized in that, The main plate (31) is provided with a progress groove (37), and the detection groove (2) is provided with a resistance bar (22).

4. The auxiliary device for the universal three-dimensional mesoporous gold substrate according to claim 3, characterized in that, The cross-section of the progress groove (37) is triangular; The resistance bar (22) is configured to fit the shape of the progress groove (37).

5. The auxiliary device for the universal three-dimensional mesoporous gold substrate according to claim 4, characterized in that, The resistance strip (22) is a rubber strip fixed on the inner wall of the groove of the detection groove (2).

6. The auxiliary device for the universal three-dimensional mesoporous gold substrate according to claim 5, characterized in that, The progress grooves (37) are provided in multiple and are evenly arranged at equal intervals on the side of the main body plate (31), and the rubber strip engages with one of the progress grooves (37).

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