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摘 要:研究了在可溶性聚合物體系中Pd納米粒子的光化學合成。PdCl2-PEG-600-丙酮溶液在太陽光照射下變?yōu)榛液谏?，獲得了Pd納米膠體粒子，然后用7200分光光度計測其混合溶液的吸光度，找出PdCl2-PEG-600-丙酮的最佳配比。實驗結果表明，在1.0mLPdCl2、2.0mL丙酮和4.0mLPEG-600的配比下反應較明顯，同時研究了時間、溫度的影響。探討了體系中Pd（Ⅱ）的快速光化學還原和納米Pd粒子的穩(wěn)定性機理。 關鍵詞： Pd納米粒子; 光化學合成; 太陽光; 穩(wěn)定性機理
ABSTRACT:The photochemical synthesis of Pd nanoparticles was studied in dissoluble polymer system. in the sunlight illumination, PdCl2 - mpeg - 600 - acetone solution won a gray Pd nanoparticles colloid .then use 7200 spectrophotometer measuring its mix of solution, and find out the absorbency mpeg - 600 - PdCl2 - the best ratio of acetone. Experimental results show that the 4.0mlPEG - 600 1.0mLPdCl22.0mL acetone and the proportion of reaction is more apparent, and the effects of time,The temperature. discusses the effect of (Ⅱ) system of rapid Pd reduction and photochemical stability of nanometer Pd particles mechanism. Keywords: Pd nanoparticles; Photochemical synthesis; The sun; Stability mechanism |
