Wettability And Electrochemical Properties Of Transparent Diamond Thin Films

Multi-scale micro-nano composite surface morphology has the advantages of superhydrophobic,large specific surface area,and many active sites,and is commonly used in hydrophobic,organic matter electrochemical detectors,sewage treatment,antibacterial films and other fields.However,the biggest problem with this material with special morphology is that with the increase of use time,the performance of the surface morphology wear and tear is reduced,and the study of a long-life film has a broad research prospect.The study of a long-life thin film has broad research prospects.Therefore,diamonds with many excellent properties have entered our sight,this paper uses the hot wire chemical vapor deposition(HFCVD)method,in the titanium mesh and glass surface growth has a special shape of the diamond film,the use of diamond excellent mechanics,optics and boron after the electrochemical properties,prepared a hydrophobic film with good wetting and can be used as an electrode material boron diamond film.In this paper,the particle size and potential distribution of nanodiamond phytochemical solution under different p H conditions were first studied,and the nucleus-forming site and density of nanodiamond were controlled according to the potential and particle size distribution,and then the growth of multi-scale micro-nano composite diamond films was regulated.Then,according to the single implant crystal method and the layer self-assembly method,the quartz glass is planted to grow transparent hydrophobic diamond film.1.Using the method of single planting crystal,with a particle size of 4nm detonation diamond as the grain seed,[2-(Methacryloyloxy)ethyl]trimethylammonium chloride solution(TMAEMC)as the dispersant of the diamond suspension seeds,grown in HFCVD equipment,the diamond film under the observation of SEM,the surface is dense,the contact angle of the surface water of the film is 120 °,and the transmittance of the ultraviolet visible light band is as high as 80%.2.Using layers of self-assembly method,the use of concentration of 0.1wt%Poly(diallyldimethylammonium chloride)solution(PDADMAC)organic solution and particle size of 100 nm non-detonation diamond as the crystal seed,dispersant as Sodium dodecylbenzenesulfonate(SDBS)of the diamond suspension as the implant crystal solution alternate seeds 5 times,using HFCVD equipment,after deposition 10 min can be prepared to produce a diamond film with a water contact angle of 130 °,The use of transparent diamond film can reduce the fingerprint on the surface of the display glass,reduce the adhesion of organic matter on the surface of the underwater camera lens,and have functions such as antifingerprint and underwater self-cleaning,which can ensure the long-term stability of optical window,camera lens,electronic screen and other performance.In the field of diamond electrodes,by constructing a micromorphology can increase the specific surface area of diamond electrodes,and then increase the diamond and then use titanium mesh as the substrate,after planting crystals on the titanium wire,using HFCVD equipment,after deposition 90 min,boron-doped diamond electrodes were prepared.The electrode electrochemical window of the prepared electrode is 2.6V,which can detect a phenol solution with a concentration of 10 ?M,while the boron-doped diamond film with a planar structure can detect a phenol solution with a concentration of 100 ?M,and the micron structure of the boron-doped diamond electrode is 10 times more sensitive than that of the flat sample.Boron-doped diamonds that prove micron structures can be used in areas such as contaminants in water or to detect drug contamination in natural waters.