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high-temperature high-pressure Hydrothermal Synthesis of Dy3＋-doped YNbO4 Single Crystal and Its Luminescence Properties

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Chemical Research in Chinese Universities 2013年第6期29卷 1050-1054页

作者： YANG Min LI Qi-liang WANG Ying LIU Xiao-yang WANG Xiao-feng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changchun 130012 P.R.China

Single crystal Dy3＋ doped YNbO4phosphors were prepared via a high-temperature high-pressure hydrothermal procedure. Under excitation at 270 nm, the Dy3＋-doped YNbO4 phosphor shows bright white emission, which is composed of two strong bands at 492 and 576 nm corresponding to the characteristic 4F9/2→6H15/2 and aF9/2→6H13/2 transitions of Dy3＋, respectively. The dominant band was observed at 352 nm, which corresponds to the 6H15/2→6p7/2 transition of Dy3＋. Nearly white light was achieved at 2ex 270, 310 and 388 nm and the CIE（International Commission on Illumination） values were （0.3135, 0.3421）, （0.3088, 0.3380） and （0.3146, 0.3296）, respectively.

关键词： Dy-YNbO4 Single crystal high-temperature high-pressure Hydrothermal Luminescence

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Development of In Situ MAS NMR and Its Applications in Material Synthesis and Heterogeneous Catalysis

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Chinese Journal of Structural Chemistry 2022年第10期41卷 45-55页

作者： Xinlong Yao Zhenchao Zhao Guangjin Hou State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Bejing 100049China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China

high-resolution magic angle spinning(MAS)NMR can afford both qualitative and quantitative information of the solid,liquid and gas phase at atomic level,and such information obtained at in situ/operando conditions is of vital importance for understanding the crystallization process of material as well as the reaction mechanism of *** meet the requirement of experimental conditions for material synthesis and catalytic reactions,in situ MAS NMR techniques have been continuously developed for using at higher temperatures and pressures with high ***,we will briefly outline the development of this technology and discuss its detailed applications in understanding material synthesis and heterogeneous catalysis.

关键词： in situ NMR high-temperature high-pressure material synthesis heterogeneous catalysis molecular sieves

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