The Nanoporous Metallization of Polymer Membranes through Photocatalytically Initiated Electroless Deposition
The Nanoporous Metallization of Polymer Membranes through Photocatalytically Initiated Electroless Deposition
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通过光催化引发的化学沉积实现聚合物膜的纳米多孔金属化
DOI：
10.1149/05306.0123ecst
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Bromley M
中科院分区：
文献类型：
--
作者：
Bromley M
我们提出了光催化引发无电沉积（PIED）的新用途，用于直接在绝缘有机膜基基底表面上沉积具有高度有序的亚微米（半）球形孔阵列的金属膜。这是通过用TiO 2光催化剂敏化目标基材，然后在基材表面自组装六边形紧密堆积的聚苯乙烯微球模板来实现的。然后通过PIED进入模板间隙并直接在TiO 2敏化膜表面上发生金属化。沉积金属中所得孔的尺寸由模板微球的尺寸确定，而金属膜厚度可由沉积周期控制。通过这种新颖的方法制造纳米多孔金属将高表面积的导电和可渗透的金属结构添加到否则电绝缘的聚合物膜表面。这种金属化绝缘膜在膜和分离技术、脱盐和用于燃料电池的电极/固体电解质复合材料中具有潜在的广泛应用。
We present the novel use of Photocatalytically Initiated Electroless Deposition (PIED) for the deposition of metal films with highly ordered arrays of sub-µm (hemi) spherical pores directly onto the surface of insulating organic membrane-based substrates. This is achieved by sensitisation of the target substrate with a TiO2 photocatalyst followed by the self-assembly of a hexagonally close packed polystyrene microsphere template at the substrate surface. Metallisation then occurs through PIED into the template interstices and directly onto the TiO2 sensitised membrane surface. The dimensions of the resultant pores in the deposited metal are determined by the size of the template microspheres while metal film thickness may be controlled by the deposition period. The fabrication of nanoporous metal by this novel method adds a conductive and permeable metallic structure of high surface area to an otherwise electrically insulating polymer membrane surface. Such metallised insulating membranes have potentially wide applications in membrane and separation technology, desalination and electrode/solid electrolyte composites for fuel cells.