A convenient method for preparation of pure and doped yttrium oxide was developed, which is based on irradiation of solutions containing yttrium nitrate and ammonium formate with UV light or accelerated electrons. Solid phase formed under irradiation was consequently calcined at 500 °C or higher temperatures to obtain nanocrystalline yttrium oxide. Addition of small amount of cerium(III) or europium(III) nitrates to irradiated solutions resulted in doping of yttrium oxide with Ce(III) or Eu(III) ions. Under both types of irradiation, the method yields material with high specific surface area, consisting of spherical nanoparticles 25–100 nm in diameter depending on preparative conditions and post-radiation treatment and with narrow size distribution. In the doped oxides (Y2O3:Ce or Y2O3:Eu), radioluminescence spectra typical for Ce3+ or Eu3+ doped oxide structures were observed.
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机译：开发了一种方便的制备纯掺杂氧化钇的方法，该方法基于紫外线或加速电子对含硝酸钇和甲酸铵的溶液进行辐照。因此，将在辐射下形成的固相在500℃或更高的温度下煅烧以获得纳米晶的氧化钇。在辐照溶液中添加少量的硝酸铈（III）或euro（III）会导致氧化钇中掺入Ce（III）或Eu（III）离子。在两种类型的辐射下，该方法都能产生具有高比表面积的材料，该材料由直径为25–100 nm的球形纳米颗粒组成，具体取决于制备条件和辐射后处理，并且粒径分布窄。在掺杂的氧化物（Y 2 O 3 ：Ce或Y 2 O 3 ：Eu）中，发光光谱观察到典型的Ce 3 + 或Eu 3 + 掺杂的氧化物结构。
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