@article {Gu:2008:1533-4880:3235, title = "Construction of Highly Pure Nanocrystalline Heteropoly Acid Inside the Channels of Mesoporous Material with the Imprisoned Hydrolyzation Reaction of Heteropoly Acid Etherate", journal = "Journal of Nanoscience and Nanotechnology", parent_itemid = "infobike://asp/jnn", publishercode ="asp", year = "2008", volume = "8", number = "6", publication date ="2008-06-01T00:00:00", pages = "3235-3240", itemtype = "ARTICLE", issn = "1533-4880", eissn = "1533-4899", url = "https://www.ingentaconnect.com/content/asp/jnn/2008/00000008/00000006/art00064", doi = "doi:10.1166/jnn.2008.155", keyword = "SELF-ASSEMBLY, MESOPOROUS MATERIAL, NANOCRYSTAL, 12-TUNGSTOPHOSPHORIC ACID, HETEROPOLY ACID", author = "Gu, Ying-Ying and Yu, Shu-Yuan and Kong, Ai-Guo and Hua, Chun-Yan and Ding, Han-Ming and Shan, Yong-Kui", abstract = "A novel technique was developed to prepare highly pure heteropoly acid (HPA) nanocrystals inside mesoporous SBA-15 by the imprisoned reaction of HPA etherate and water, which was utilized as a main driving force for the transportation of building-blocks. The transmission electron microscopy, X-ray diffraction, FT-IR spectrum and NMR characterizations unambiguously demonstrate that this method allows the highly pure heteropoly acid nanocrystals with intact Keggin-type structure controlled directionally self-assembly within mesopores of silica SBA-15. Such method may open up a new entry to the highly pure multicomponent nanocrystalline particles inside the cavity of the porous materials.", }