Acta Chim. Sinica ›› 2015, Vol. 73 ›› Issue (9): 869-876.DOI: 10.6023/A15020144 Previous Articles     Next Articles

Special Issue: 非碳基二维材料



李扬, 齐利民   

  1. 北京分子科学国家实验室 分子动态与稳态国家重点实验室 北京大学化学与分子工程学院 北京 100871
  • 投稿日期:2015-02-28 发布日期:2015-05-25
  • 通讯作者: 齐利民
  • 基金资助:

    项目受国家自然科学基金(Nos. 21173010, 21473004)和国家重点基础研究发展计划(No. 2013CB932601)资助.

Advances in Fabrication of Two-dimensionally Ordered Porous Membranes by Nanosphere Lithography at the Gas-liquid Interface

Li Yang, Qi Limin   

  1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
  • Received:2015-02-28 Published:2015-05-25
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21173010 and 21473004) and the National Key Basic Research Program of China (No. 2013CB932601).

Two-dimensionally (2D) ordered porous membranes are attractive structures with potential applications in a broad variety of fields such as separation and purification, controlled drug delivery, scaffolds for tissue engineering, biosensors, wetting and adhesion, photonic crystals and optical devices, electric and optoelectric devices, antireflective coatings, low dielectric constant materials, and templates or microreactors for nanofabrication. Nanosphere lithography (NSL) based on monolayer colloidal crystals (MCCs) is a general nanofabrication approach toward 2D patterned nanostructures with high controllability and reproducibility. Recently, nanosphere lithography at the gas-liquid interface, which employs MCCs floating at the solution surface as templates, has been demonstrated to be a facile, inexpensive, efficient, and versatile method for the controllable fabrication of self-standing, large-area, 2D ordered porous membranes with tunable structural parameters. This account summarizes our recent efforts devoted to the fabrication and applications of a variety of inorganic 2D ordered porous membranes including nanonets, nanobowl arrays and nanonet-nanobowl composite arrays by NSL at the gas-liquid interface via controlled chemical deposition. First, free-standing, hexagonally ordered Ag2S nanonets were prepared through interfacial deposition induced by gas diffusion; moreover, a variety of 2D ordered gold nanoarrays with unusual patterns were produced by using nanonet bilayers as unique deposition masks. Second, free-standing, honeycomb-patterned nanobowl arrays of Ag and CaCO3 were fabricated through gas diffusion-induced deposition whereas large-area ZnS nanobowl arrays with high regularity were produced through direct solution deposition. The potential applications of the obtained Ag and ZnS nanobowl arrays as plasmonic crystal-based and photonic crystal-based sensors were demonstrated, respectively. Third, unique Ag2S-Ag heterostructured nanobowl arrays were fabricated by two-step NSL at the gas-liquid interface, which involved the successive deposition of Ag2S nanonets and Ag nanobowl arrays. The produced Ag2S-Ag heterostructured nanobowl arrays exhibited effective resistance switching behaviors and enhanced photoresponses, showing potential applications in both electric devices and photocatalysis. Finally, the research trend in this field is briefly described and the remaining challenges are discussed.

Key words: monolayer colloidal crystals, nanosphere lithography, gas-liquid interface, 2D ordered nanostructures, self-standing porous membranes, nanonets, nanobowl arrays