Gold-silver alloy nano-particle modified silicon nano-wire, preparation method thereof and application of silicon nano-wire
A technology of silicon nanowires and nanoparticles, which is applied in the field of silicon nanowires and its preparation and application, can solve the problems of limiting the practical application of antibacterial materials and the lack of wide applicability of light sources, and achieve high-efficiency sterilization, increased load capacity, and strong The effect of bactericidal ability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043] (1) Preparation of silicon nanowires: the silicon nanowires were prepared by chemical etching. The cut silicon wafer (0.5×0.5cm 2 ) were cleaned with acetone, water, and acetone ultrasonically for 3 times, each time for 2 minutes. Configure the reaction solution: configure [HF]=5mol / L in a polytetrafluoroethylene container, [AgNO 3 ] = 0.05mol / L reaction solution, put it into a 50°C oven for preheating; place the silicon wafer in a polytetrafluoroethylene reaction dish, preheat it, slowly add the reaction solution and immerse the silicon wafer, and react at 50°C for 15 minutes . After the end, absorb and discard the reaction solution, add 20% nitric acid to soak and clean, and then clean with ultrapure water. After drying, silicon nanowires can be etched on the surface of the silicon wafer.
[0044] (2) Solution preparation: Dissolve silver nitrate and auric acid chloride in water respectively to prepare a silver nitrate solution with a concentration of 2.428mM and ...
Embodiment 2
[0050] The silicon nanowires decorated with gold-silver alloy nanoparticles were prepared according to the method of Example 1, except that in step (2), when preparing the mixed metal solution, 0-20 mL of silver nitrate and chloroauric acid solutions were mixed. Silicon nanowires modified with different ratios of metal nanoparticles were thus prepared.
Embodiment 3
[0052] Escherichia coli was cultured overnight, and then diluted to OD=0.01 with PBS. Put the sterilized gold-silver alloy nanoparticle-modified silicon nanowires prepared in Example 1 in a 48-well plate, add 10 μL of diluted bacteria, and illuminate for 10 minutes under real sunlight, and then use the plate after elution The spread method was used to test the viability of bacteria.
[0053] In order to serve as a control, the silicon nanowires decorated with gold-silver alloy nanoparticles were replaced with SN, SN-Ag, and SN-Au respectively, and the survival of bacteria was tested according to the same method as above.
[0054] The result is as figure 2 as shown, figure 2 a, b, c, and d are the antibacterial coating results of SN, SN-Ag, SN-Au, and SN-Au / Ag after being exposed to real natural light for 10 minutes, respectively. From figure 2 It can be seen from the statistical chart of e that the bactericidal rates of silicon nanowires simply modified with silver and ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| concentration | aaaaa | aaaaa |
| concentration | aaaaa | aaaaa |
| quality score | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More