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- W2156556457 abstract "采用原位显微Raman光谱技术详细考察了焙烧温度和焙烧时间对La(OH) 3 分解制备的La 2 O 3 结构以及过氧物种光诱导生成性能的影响, 结果表明, 经700℃焙烧所得La 2 O 3 样品较经800℃以上长时间焙烧的样品更有利于过氧物种的生成. 对La(OH) 3 热分解过程的原位XRD测试结果表明, 焙烧温度需达到近700℃才可使La(OH) 3 完全转化为La 2 O 3 . 在700℃焙烧的样品上, 除了六方相的La 2 O 3 外, 还可检出介稳态的立方相La 2 O 3 . 经800℃以上长时间(≥5 h)焙烧后, 介稳态的立方相La 2 O 3 将转化为稳定的六方相La 2 O 3 物种. 在相同的实验条件下, 立方相的稀土倍半氧化物较六方相更有利于过氧物种的光诱导生成, 其原因可能源于前者含更多氧空位, 因而更有利于对分子氧的吸附和活化." @default.
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- W2156556457 date "2014-12-01" @default.
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- W2156556457 title "Effect of sample pretreatment conditions on the photo-induced formation of peroxide species over La<sub>2</sub>O<sub>3</sub>" @default.
- W2156556457 doi "https://doi.org/10.1360/n032014-00222" @default.
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