需要金幣： 1000 個(gè)金幣 |
資料包括：完整論文 |  |
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| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字?jǐn)?shù)：6173 |  | |
| 折扣與優(yōu)惠：團(tuán)購(gòu)最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:本論文采用光化學(xué)還原法制備金納米粒子,著重研究了光敏劑丙酮、保護(hù)劑PVA、光照條件下對(duì)金納米粒子的影響，通過實(shí)驗(yàn)確定了最佳試驗(yàn)參數(shù)。當(dāng)保護(hù)劑PVA為8ml，光敏劑丙酮為4ml，光照強(qiáng)度在一天中的十二點(diǎn)至一點(diǎn),光照時(shí)間為50分鐘，是制備金納米粒子最佳參數(shù)。提出了用丙酮作光敏劑，PVA做保護(hù)劑光化學(xué)合成納米 Au 粒子的方法，并改變傳統(tǒng)方法存在的缺陷。波長(zhǎng)在525nm時(shí)整個(gè)體系吸光度最大，Au晶核顆粒極其均勻，徑粒相對(duì)較大。 關(guān)鍵詞：光化學(xué)還原法 光敏劑丙酮 保護(hù)劑PVA 性能 金納米粒子
ABSTRACT:This paper adopts photochemical reduction for the gold nanoparticles, and emphatically studied photosensitizer acetone, PVA, lighting conditions of the gold nanoparticles, through the experiment the best test parameters. When protectants for PVA 8ml, 4ml acetone photosensitizer, light intensity during the day, 12 - 1for an50minutes, the time of light gold nanoparticles preparation is optimal parameters. Put forward by acetone as photosensitizer, PVA do protectants photochemical synthesis methods of nanometer particle Au, and change the traditional method defects. When the system is in 525nm wavelength, the biggest absorbency Au, nucleation particles diameter is relatively large grain. Keywords: photochemical reduction method photosensitizer acetone PVA Gold nanoparticles |
