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Ultralong and Mesoporous ZnO and γ-Al_2O_3 Oriented Nanowires Obtained by Template-assisted Hydrothermal Approach 被引量:1
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作者 Carminna Ottone Vivian Farías Rivera +3 位作者 Marco Fontana Katarzyna Bejtka Barbara Onida Valentina Cauda 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2014年第12期1167-1173,共7页
Highly mesoporous Zn O and g-Al2O3nanowires(NWs) are both synthesized by a hydrothermal method using commercially available porous anodic aluminium oxide(AAO) as template. AAO membrane acts as template for Zn O NW... Highly mesoporous Zn O and g-Al2O3nanowires(NWs) are both synthesized by a hydrothermal method using commercially available porous anodic aluminium oxide(AAO) as template. AAO membrane acts as template for Zn O NWs and both as template and precursor for g-Al2O3 NWs. The formation of intermediate phases of porous Zn6Al2(OH)16CO3and boehmite(g-Al OOH) were observed, both occurring during the hydrothermal synthesis of porous Zn O and g-Al2O3 NWs, respectively, and disappearing after annealing at 600 C. This novel template-assisted hydrothermal process leads to the formation of porous Zn O and g-Al2O3NWs(specific surface area of 192 m2 g 1and 263 m2 g 1, respectively), showing pore sizes around 4 nm in diameter. The influence of the reaction parameters on the nanostructure morphology was also investigated. A Zn O seed layer, deposited on the AAO channels prior to the hydrothermal synthesis, leads to more compact Zn O nanowires(99 m2 g-1) protecting the AAO host from the chemical attack of the precursor solution. 展开更多
关键词 Mesoporous ZnO nanowires Mesoporous γ-Al2O3 nanowires BOEHMITE Template-assisted method Hydrothermal synthesis
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