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首页> 外文期刊>Journal of Materials Research >Alternative etching methods to expand nanocasting, and use in the synthesis of hierarchically porous nickel oxide, zinc oxide, and copper monoliths
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Alternative etching methods to expand nanocasting, and use in the synthesis of hierarchically porous nickel oxide, zinc oxide, and copper monoliths

机译：替代蚀刻方法以扩大纳米铸造，并用于合成分层多孔的氧化镍，氧化锌和铜整体

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摘要

Nanocasting into silica templates for preparation of mesoporous materials has up to now been limited to those metal oxides and metals that can withstand the harsh silica etching processes currently used. Two new methods of removing the silica template are reported, either by dissolving the silica in methanolic base or by dissolution in aqueous base under an external potential. The utility of these methods is demonstrated in the synthesis of hierarchically porous zinc oxide, nickel oxide, and copper monoliths that would dissolve or react using other template removal methods. The successful etching of monolithic zinc oxide using methanolic base etching can be explained by the reduced solubility of zinc oxide in methanol compared with an aqueous base, while it also reduces the formation of hydroxides when etching the nickel oxide and copper monoliths. Alternatively, the formation of highly soluble copper oxide/hydroxide can be avoided by holding the copper monolith at a sufficiently negative potential while etching with an aqueous base.
机译：迄今为止，将纳米铸造到二氧化硅模板中以制备介孔材料的方法仅限于那些能够承受目前使用的苛刻二氧化硅蚀刻工艺的金属氧化物和金属。报道了两种去除二氧化硅模板的新方法，通过将二氧化硅溶解在甲醇碱中或在外部电势下溶解在碱水溶液中。这些方法的实用性在使用其他模板去除方法可溶解或反应的分层多孔氧化锌，氧化镍和铜整体料中得到了证明。使用甲醇基刻蚀成功地完成了整体式氧化锌的刻蚀，可以解释为与水性碱相比，氧化锌在甲醇中的溶解度降低，同时在刻蚀氧化镍和整体式铜时也减少了氢氧化物的形成。可替代地，可以通过在用含水碱蚀刻的同时将铜单块保持在足够的负电势来避免形成高度可溶的氧化铜/氢氧化铜。

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  • 来源
    《Journal of Materials Research》 |2013年第17期|2483-2489|共7页
  • 作者

    Amy J. Grano; Franchessa D. Sayler; Jan-Henrik Smart; Martin G. Bakker;

  • 作者单位

    Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336;

    Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336,Present Address: ThruPore Technologies LLC, Box 870204,Tuscaloosa, AL 35487-0204;

    Center for Functional Materials and Laboratory of Physical Chemistry, Abo Akademi University,Porthansgatan 3-5, FIN-20500, Turku, Finland;

    Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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