钯三角双锥单孪晶的合成
发布时间：2019-07-24 10:55
【摘要】：采用液相还原法,以Na_2PdCl_4为钯源,PVP为还原剂和分散剂,碘离子作为晶面选择吸附剂和配位剂,硝酸根离子作为氧化蚀刻剂,水为溶剂,在n(Na_2PdCl_4)∶n(PVP)∶n(KI)∶n(NaNO_3)=1∶35∶10∶9和pH=11条件下,合成了形貌规整的纯度大于99%的钯三角双锥单孪晶.碘离子在合成体系中主要通过改变钯前驱体还原速率来影响钯晶种的生长转化和产物的形貌,对氧化蚀刻作用的影响在较高pH值下并不明显.钾离子和钠离子比例的变化显著影响了产物的形貌组成,此阳离子效应可归因于反应体系在钠离子存在时较钾离子存在时表现出更快的钯前驱体还原速率.
[Abstract]:Using Na_2PdCl_4 as palladium source, PVP as reductant and dispersing agent, iodine ion as crystal plane, nitrate ion as oxidation etch agent and water as solvent, palladium trihedral single twin with regular purity of more than 99% was synthesized by liquid phase reduction method under the condition of n (Na_2PdCl_4): n (PVP): n (KI): n (NaNO_3) = 1 鈮，
本文编号：2518595
[Abstract]:Using Na_2PdCl_4 as palladium source, PVP as reductant and dispersing agent, iodine ion as crystal plane, nitrate ion as oxidation etch agent and water as solvent, palladium trihedral single twin with regular purity of more than 99% was synthesized by liquid phase reduction method under the condition of n (Na_2PdCl_4): n (PVP): n (KI): n (NaNO_3) = 1 鈮，
本文编号：2518595
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