Synthesis and characterization of nano-chambersite
Synthesis and characterization of nano-chambersite
Blog Article
Chambersite (Mn3B7O13Cl) is both a rare inorganic macromolecular manganese chloroborate and a rare mineral.The chambersite deposit Girls Bag was firstly discovered in Jixian, Tianjin, China, which is the only mineable chambersite deposit in the world.Due to its unique multi-element composition and structure type, it has great application potential as a light-emitting material in biological anti-virus, anti-tumor, and anti-microbial applications, as well as a nuclear-protection and LED applications.
However, as yet there are few reports on the material science of chambersite.Rare-earth and transition-group ion-activated borate are important constituent systems in luminescent materials.In this paper, nano-chambersite and rare-earth-element Eu3+-doped nano-chambersite were successfully synthesized by Sol-Gel method.
The crystal structure of the nano-chambersite was characterized by X-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy.The performance comparison between natural chambersite and synthetic chambersite was provided to provide a basis for the rational development and utilization of chambersite.The results show that the artificially synthesized chambersite has a spherical shape with a particle size of less than 50 nm, and has the same phase structure as natural chambersite.
It belongs to the orthorhombic system and has a structure similar to that of spinel.The inter planar spacing of (010) is 0.8565 nm.
Under 490 nm excitation light, the natural chambersite, artificially synthesized chambersite, and rare-earth-element Eu3+-doped chambersite crystal all showed a Mn2+ emitting center.The Mn2+ that filled the center of the tetrahedral lattice site of the crystal exhibited a green emission, whereas the Mn2+ that filled the center of the octahedral lattice site of the crystal exhibited a red emission.The artificially synthesized chambersite showed a unique red Candle Holder (Set of 3) shift of the emission spectrum with increases in the emitting-light wavelength.
This unique phenomenon is beneficial to the conversion of cold and warm luminescence.Eu3+ doping in the artificially synthesized chamversite further increased the intensity of the luminescence.