Homogeneously distributed CdS nanoparticles in nafion membranes: preparation, characterization, and photocatalytic properties.
Homogeneously distributed CdS nanoparticles in nafion membranes: preparation, characterization, and photocatalytic properties.
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DOI：
10.1021/la051072c
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发表时间：
2005-11
期刊：
影响因子：
--
通讯作者：
Shiming Wang;Ping Liu;Xuxu Wang;Xianzhi Fu
中科院分区：
文献类型：
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作者：
Shiming Wang;Ping Liu;Xuxu Wang;Xianzhi Fu
以硫代乙酰胺(TAA)为非离子前驱体，在Nafion离聚体膜中合成了稳定结晶的硫化镉纳米粒子。与Na(2)S等离子前驱体不同，TAA能更均匀地扩散到阳离子可交换离聚体膜中。这导致了在Nafion膜中形成了均匀分布的硫化镉纳米颗粒，元素分析和能量色散X射线(EDAX)分析证实了这一点。通过对其物理性质、化学稳定性和光催化性能的表征，给出并讨论了其在Nafion膜中的应用。还给出了由离子Na(2)S前驱体制备的Nafion膜中纳米硫化镉的平行数据，以供比较。
Stable crystalline CdS nanoparticles were synthesized in Nafion ionomer membranes by using thioacetamide (TAA) as a nonionic precursor. Unlike the ionic precursors such as Na(2)S, TAA could diffuse into the cationic-exchangeable ionomer membranes much more uniformly. This led to the formation of homogeneously distributed CdS nanoparticles in the Nafion membranes, which was confirmed by elemental mapping with energy-dispersive X-ray (EDAX) analysis. Results from the characterizations on the physical properties, the chemical stability, and the photocatalytic properties of these CdS nanoparticles embedded in Nafion membranes are presented and discussed. The parallel data from the CdS nanoparticles in Nafion membranes prepared from the ionic Na(2)S precursor are also shown for comparison.