Synthesis of high quality Ce:YAG nanopowders by graphene oxide nanosheet-assisted co-precipitation method
来源期刊：Journal of Rare Earths2018年第2期
论文作者：Cheng Ji Qiang Gao Peng Dai Liming Shen Xiaoyan Zhang Ningzhong Bao
文章页码：130 - 134
摘 要：(Ce0.04Y2.96)Al5O12 phosphor nanoparticles were prepared by a modified co-precipitation method with graphene oxide（GO） nanosheets used as dispersing agent. The GO concentration is controlled at 0.0.005,0.01, 0.02, and 0.03 g/L. The addition of lamellar GO nanosheets in the precipitant solution possibly enhances both the dispersity of precursor particles and the crystallinity of phosphor nanoparticles. Pure Ce-doped YAG phase is obtained by calcining the precipitate at 1000 ℃ for 3 h. The(Ce0.04Y2.96)Al5 O12phosphor nanoparticles have an average size of 64 nm and there is no significant change on particle size with increase of the GO concentration in precipitant solution. The luminescence property of(Ce0.04Y2.96)Al5O12 phosphor nanoparticles varies with different concentrations of GO. The photoluminescence emission intensity of the optimum sample with 0.02 g/L GO is about 1.6 times higher than the sample without using GO.
Cheng Ji1,2，Qiang Gao1，Peng Dai1，Liming Shen1，Xiaoyan Zhang1，Ningzhong Bao1,2
1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University2. Jiangnan Graphene Research Institute
摘 要：(Ce0.04Y2.96)Al5O12 phosphor nanoparticles were prepared by a modified co-precipitation method with graphene oxide（GO） nanosheets used as dispersing agent. The GO concentration is controlled at 0.0.005,0.01, 0.02, and 0.03 g/L. The addition of lamellar GO nanosheets in the precipitant solution possibly enhances both the dispersity of precursor particles and the crystallinity of phosphor nanoparticles. Pure Ce-doped YAG phase is obtained by calcining the precipitate at 1000 ℃ for 3 h. The(Ce0.04Y2.96)Al5 O12phosphor nanoparticles have an average size of 64 nm and there is no significant change on particle size with increase of the GO concentration in precipitant solution. The luminescence property of(Ce0.04Y2.96)Al5O12 phosphor nanoparticles varies with different concentrations of GO. The photoluminescence emission intensity of the optimum sample with 0.02 g/L GO is about 1.6 times higher than the sample without using GO.
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