金纳米颗粒(Au NPs)是使用简单的热解法合成的,无论是从中间相还是从甲苯溶液中,生成介晶炔基-异氰化物金络合物[Au(C≡C–C 6 H 4 –C m H 2 m +1)( C≡N–C 6 H 4 –O–C n H 2 n +1)]。中间相的热分解比溶液的热分解要慢得多,并且会导致纳米颗粒的尺寸分布更加不均匀。在甲苯溶液中工作,可以通过调节前体中存在的配体的链长将纳米粒子的尺寸从约2纳米调节至约20纳米。分析了不同的实验条件以揭示控制金纳米颗粒形成的过程。关于添加配体或鼓泡氧气的影响的实验表明,热分解是一个双分子过程,该过程从异氰化物配体的解配作用开始,从而使炔基与[R–C≡C–C≡C–R]发生氧化偶联并将金(I)还原为金(0)作为纳米粒子。获得的纳米颗粒在异氰酸酯(CNR)氧化为异氰酸酯(OCNR)的过程中起到催化剂的作用,
Goldnanoparticles have been deposited on three kinds of carbonnanotubes (CNTs), including nitrogen-doped CNTs, by three different methods, namely, impregnation, organometallic decomposition, and deposition-precipitation. The choice of the gold precursor, the support, and the preparation procedure is critical for the control of the size and location (on or inside the nanotubes) of the gold nanoparticles