sno 2 Modified micro-nano-structured fullerene composite material, preparation method and application thereof
A technology of micro-nano structure and composite material, applied in the field of micro-nano structure fullerene composite material and its preparation, can solve the problems of limited influence of photoelectric properties and the like
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Embodiment 1
[0060] Example 1SnO 2 Modified C 60 Preparation of Nanotube Composites
[0061] (1)C 60 Preparation of nanotubes:
[0062] Select mesitylene as a good solvent and isopropanol as a poor solvent; 10mL of 0.5mg / mL C 60 When the mesitylene solution was quickly injected into 40 mL of isopropanol with a syringe, due to the good mutual solubility of mesitylene and isopropanol, the C in the mutual solution was reduced. 60 in a supersaturated state, C 60 Molecules begin to co-crystallize with mesitylene molecules. During this process, it can be observed that the mixed solution immediately becomes cloudy, initially rose-colored, and gradually turns brownish-yellow. After the mixed solution was allowed to stand for 24 hours, it was centrifuged at a speed of 11 k on a high-speed centrifuge, the supernatant was poured out, and the solid precipitate at the bottom was collected. Washed with isopropanol 3 times and dried overnight in a vacuum oven at 40 °C to obtain C 60 Solid powder ...
Embodiment 2
[0075] Example 2SnO 2 modified C 60 Study on Photocurrent Properties of Nanotube Composites
[0076] The photocurrent was measured by a three-electrode system, with a Pt sheet as the counter electrode, calomel as the reference electrode, the prepared sample electrode as the working electrode, and the electrolyte was 0.5 mol / L Na 2 SO 4 Solution, (300W, λ>420nm) xenon mercury lamp as visible light source, plus 0.3V bias.
[0077] C prepared in Example 1 of the present invention 60 Nanotubes, SnO 2 modified C 60 Nanotube composites and C 60 The photocurrent diagram of the powder is as follows Figure 7 As shown in the figure, when irradiated with a (300W, λ>420nm) xenon mercury lamp, the electrons in the valence band of the material absorb energy and are excited to the conduction band to generate photo-generated electron-hole pairs. The working electrode is transferred to the Pt sheet electrode to generate a current signal, and the more photogenerated electrons, the stro...
Embodiment 3
[0078] Example 3SnO 2 modified C 60 Study on Photocatalytic Properties of Nanotube Composites
[0079] SnO prepared in Example 1 2 modified C 60The nanotube composite has excellent photocatalytic performance for the degradation of methylene blue, rhodamine B, tetracycline hydrochloride and other organic pollutants, and the degradation reaches more than 70% within 2 h. Below in conjunction with the accompanying drawings, the photocatalytic degradation of methylene blue is taken as an example to show SnO 2 modified C 60 Effect of nanotube composites on degradation of organic pollutants.
[0080] The experimental steps are as follows: take 4mL, 30mg / L methylene blue solution and put it into a vial, put 3mg SnO prepared in Example 1 2 modified C 60 Nanotube composites, C 60 Nanotubes or SnO 2 , dispersed in the above methylene blue solution. Then place the vial in the dark for 1h to absorb organic pollutants, take samples every 30min, and use a Shimadzu UV-2550 ultraviol...
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