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synthesis and characterization of ln2o2so4 (ln = gd, ho, dy and lu) nanoparticles obtained by coprecipitation methodand study of their reduction reaction under h2 flow
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نویسنده
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osseni semiyou. a ,denisenko yu. g. ,fatombi jacques. k. ,sal’nikova elena. i ,andreev oleeg. v
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منبع
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journal of nanostructure in chemistry - 2017 - دوره : 7 - شماره : 4 - صفحه:337 -343
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چکیده
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We have proposed an optimized homogeneous precipitation method for the synthesis of spherical and well-dispersed pure ln2o2so4 (ln = gd, ho, dy and lu) nanoparticles (nps) using synthesized lanthanide sulfates and urea as starting materials. ln2o2so4 nps can be easily transformed to ln2o2s by reduction under h2 flow at 650 c for gd, dy and ho whereas the reduction with lu gave only lu2o3. particle size was between 500 nm and 3.5 lm. this reduction method allows to obtain ln2o2s without using h2s which is highly toxic and uncomfortable gas. ln2o2so4/ln2o2s synthetized can be used for release and oxygen storage or doped with luminescent centers for multimodal medical imaging applications.
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کلیدواژه
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coprecipitation ,lanthanide oxysulfates ,lanthanide oxysulfides ,nanoparticles ,reduction
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آدرس
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université nationale des sciences,technologies,ingénierie et mathématiques (unstim), faculty of sciences and technology of natitingou, department of chemistry, benin. tyumen state university, institute of chemistry, russia, tyumen state university, institute of chemistry, russia, université nationale des sciences,technologies,ingénierie et mathématiques (unstim), laboratory of water chemistry and environment-ens, benin, tyumen state university, institute of chemistry, russia. northern trans-ural state agricultural university, russia, tyumen state university, institute of chemistry, russia
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Authors
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