Facile Microwave-assisted Synthesis Manganese Doped Zinc Sulfide Nanoparticles

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作者
David Magalhães Sousa
Luís Cerqueira Alves
Ana Marques
Guilherme Gaspar
João Carlos Lima
Isabel Ferreira
机构
[1] Campus Universitário,CENIMAT/I3N, Departamento de Ciência dos Materiais Universidade Nova de Lisboa Quinta da Torre
[2] Centro de Ciências e Tecnologias Nucleares Instituto Superior Técnico Estrada Nacional 10 (km 139,LAQV
[3] 7),REQUIMTE, Departamento de Química
[4] CQF B Universidade Nova de Lisboa Quinta da Torre,undefined
[5] Campus Universitário,undefined
来源
Scientific Reports | / 8卷
关键词
ZnS NPs; Nanoparticles (NPs); Manganese-doped Zinc Sulfide; Sphalerite (ZnS); Triangular Particles;
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摘要
Undoped and manganese doped zinc sulfide nanoparticles were produced by a fast, one-step and two-component microwave-assisted synthesis method. The solid phase retains around 78% of the initial Mn concentration, as revealed by Particle Induced X-ray Emission analysis. X-ray diffraction patterns confirmed zinc blende structure and in the transmission electron microscopy images, nanoparticles with triangular prism and cube shapes were observed, respectively with an average particle size around 7 nm and 13 nm. Dried powders of zinc sulfide nanoparticles, doped with 0.1 mol% and 0.7 mol% of Mn ions, show highest brilliance of luminescence under UV light. Increasing dopant levels resulted in a diminishing emission that vanishes above 4% of dopant concentration. The synthesis of ZnS was monitored and two main events were detected, one at 145 °C corresponding to the sol-gel phase formation and another after ~3 min at 300 °C where the precipitation of the zinc sulfide nanoparticles occurs.
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