A kind of nano/micro gold film and preparation method thereof

Abstract

The invention discloses a nanometer / micron gold film and a preparing method thereof. The nanometer / micron gold film comprises a matrix and a nanometer / micron gold layer. The nanometer / micron gold layer is formed by metal nanoparticles in a deposition mode. Amidogens are arranged on the surface of the matrix. The metal nanoparticles and the amidogens on the surface of the matrix form strong interaction. The preparing method comprises the steps that (1) the surface of the matrix is subjected to oxygen plasma treatment or ultraviolet irradiation; (2) the surface-activated matrix is soaked into an NH2(CH2)3Si(OC2H5)3 solution; and (3) a mixed solution of chloroauric acid and bicarbonate of a strong base and a glucose solution are evenly mixed and are arranged on the surface-amination matrix in a coating mode, and the nanometer / micron gold film is obtained through light-avoiding reaction. According to the nanometer / micron gold film, the types of matrixes are multiple, different mechanical property requirements can be met, combining is firm, breaking is not easy, according to the method, reaction is mild, and cost is low.

Description

technical field

[0001] The invention belongs to the field of nanomaterials, and more specifically relates to a nano / micro gold film and a preparation method thereof. Background technique

[0002] The nano / micro gold film composed of nanoparticles has obvious surface effect, volume effect, small size effect, quantum effect and good biocompatibility. Its optical properties, electronic properties, sensing properties and biochemical properties have always been research hotspots. .

[0003] At present, the preparation methods of nano / micro gold layers mainly include electron beam evaporation, chemical vapor deposition (CVD), physical vapor deposition (PVD) and other methods. Although these methods can obtain relatively uniform nano gold layers, the equipment is expensive and the process is complicated. . In 2009, Chen Hongyuan and others invented a method for chemically depositing nano-gold on PDMS. This method deposits gold directly on PDMS, and the preparation is simple. How...