| Ti O2 has become the research hotspot due to its rich resources, security, non-toxic, stable chemical properties. Two-dimensional(2-D) which with good surface roughness and photo-catalytic properties, have a wide range of applications in many ways, such as self-cleaning, antifouling, photo-catalytic degradation of organic dyes. Therefore, it is necessary to systematic study of the two matereicals.Ti O2 nanoarrays on fluorine doped tin oxide(FTO) coated glass substrates were fabricated by afacile and low cost hydrothermal method. Transparent superhydrophobic films were obtainedafter being modified with triethoxyoctylsilane(KH-832) via dip coating. The double adjustment of transmission and superhydrophobic coating on FTO coated glass substrates is achieved by adjusting the saturated sodium chloride solution in thegrowth solution for Ti O2 nanorods. Graphene nanowalls(GNWs) have been successfully prepared on Quartz, Si and Si O2 substrates by a plasma enhanced chemical vapor deposition(PECVD). Then the effect of base pressure on the surface morphology and hydrophobicity of GNWs on Si substrates has been investigated. Ti O2/graphene composite is prepared through synthesis Ti O2 particles coated in graphene oxide by the method of hydrothermal method. The degradation of this composite material in ultraviolet light under different concentrations of methyl orange(MO) and methylene blue(MB) was researched. The primary consequences acquired are as follows:1. We analyzed the influence of saturated sodium chloride solution on the morphology and roughness of Ti O2 nanoarrays. The results show that the higher the saturated sodium chloride solution, the more roughness of Ti O2 nanoarrays.2. The transparency and superhydrophobic coating can be obtained at the same time when adding 4 m L saturated sodium chloride solution in the growth solution. The transmittance of the coated FTO substrate reached to 85%, with the static contact angle as high as 167.3°, and the water droplet can roll off easily and quickly.3. The GNWs samples on Quartz, Si, Si O2 are hydrophobic and become superhydrophobic after modification with low surface energy triethoxyoctylsilane(KH-832).4. The size of the blades in GNWs increases with the preparation pressure. All samples obtained on Si substrates showed a strong adhesion, and the water contact angle of the GNWs prepared at 50 Pa is found to be large as ~158.7° without modification with any low surface energy materials.5. The superhydrophobicity of GNWs is ascribed to the increased roughness of the surface and the decreased surface free energy. The prepared uniformly GNWs with excellent superhydrophobicity and adhesion properties may serve as one of promising candidates for application in lossless transport of microdroplets.6. The compound material,Ti O2 nanoparticles parcel in the structure of graphene sheet, was prepared when the content of less layers of graphene oxide is 3.3 mg and the volume of tetrabutyl titanate is 2.9 m L.7. The methylene blue(MB) with concentrations of 10mg/L and methyl orange(MO) with concentrations of 30mg/L can be completed degradation within 2 hours by 50 mg sample, degradation of 30 mg / L of MO just need three hours. Due to the different structure of the two kinds of dye molecules, the degradation of MB is more easily than that of MO in the same condition. |
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