A novel hybrid metal nanomaterial, its preparation method and its application in matrix-assisted laser desorption ionization mass spectrometry
A technology of matrix-assisted laser and ionization mass spectrometry, applied in the application of matrix-assisted laser desorption ionization mass spectrometry, the field of new hybrid metal nanomaterials, can solve the problems of strong signal interference, achieve high sensitivity, simple synthesis method, and solve the Effects of background distractions and hotspot effects
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[0039] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.
[0040] Prepare Fe-MOF hybrid nanoparticles wrapped by Pt nanoparticles as a matrix by layer-by-layer surface assembly method, including the following steps;
[0041]Step 1: Using the hydrothermal method, mix 5-10 g of fumaric acid and FeCl3 6H2O1-2 g in 100 mL of water, stir for 1 hour, and self-nucleate at 85 ° C for 16-24 hours to prepare monodisperse iron-based Metal-organic framework MIL-88A, expressed as MOFFe-MOF, is the core material;
[0042] Step 2: Add 0.2-0.4 g of PVP to the product obtained in Step 2 and stir at room temperature for 1-2 hours, and obtain the Fe-MOF@PVP composite as an int...
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