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gohappy銅蟲 (正式寫手)
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[求助]
求助翻譯一段英語為中文
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| An easy chemical route for the synthesis of (γ-Fe2O3@SiO2)n@TiO2 functional hybrid nanoparticles is reported in this paper. The hybrid nanoparticles are composed of spherical nanoparticles about 100 nm in diameter, with several γ-Fe2O3 fine particles about 15 nm in diameter as cores distributing within the titania matrix and silica as coatings and barrier layers between the magnetic cores and titania shells. The (γ-Fe2O3@SiO2)n@TiO2 hybrid nanoparticles show good magnetic response and got together within 20 s in a magnetic field. Photodegradation examination of the magnetic hybrid nanoparticles was carried out in methylene blue solutions illuminated under UV light in a photochemical reactor. It is shown that the (γ-Fe2O3@SiO2)n@TiO2 functional hybrid nanoparticles are photocatalytically actived. About 80% of methylene blue decomposed in 80 min in the presence of magnetic hybrid nanoparticles under illumination of UV light. |
| 本文獻報導(dǎo)了一種合成(γ-Fe2O3@SiO2)n@TiO2實用性混合納米顆粒的簡單的化學(xué)合成方法;旌霞{米顆粒由直徑約為100nm的球形納米顆粒組成,由若干直徑約為15nm的γ-Fe2O3 細微顆粒分布在二氧化鈦基質(zhì)中作為核心,并有二氧化硅作為磁性核心與二氧化鈦殼之間的覆蓋物及阻礙層。(這一長串話就是說15nm的γ-Fe2O3在中間是核心,核心外面是SiO2,最外面一層是二氧化鈦。) (γ-Fe2O3@SiO2)n@TiO2混合納米顆粒由良好的磁性響應(yīng),在磁場中20s內(nèi)能聚到一起。在UV光照下的盛有亞甲藍溶液光化學(xué)反應(yīng)器中進行了納米顆粒的光降解檢測。結(jié)果表明(γ-Fe2O3@SiO2)n@TiO2實用性混合納米顆粒具有光催化活性。在有磁性混合納米顆粒的存在下,經(jīng)UV光照射,約有80%的亞甲藍在80min內(nèi)被分解。 |
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