Year-end Sale % OFF 
Abstract
Nanosized AlPO4-18 is synthesized from clear precursor solutions; a complete transformation from amorphous to crystalline colloidal particles is observed after 60, 20 and 18h at 100, 150, and 170°C, respectively. The evaluation of the long-range ordering of nanocrystals as a function of crystallization time was followed by X-ray diffraction and dynamic light scattering. The time-dependent 27Al NMR measurements in the liquid phase before and after purifications with different crystallization times show that the tetrahedrally coordinated Al is formed at RT prior to hydrothermal treatment indicating the formation of crystalline phase. The mean hydrodynamic radius of the amorphous aluminophosphate entities and the crystalline AlPO4-18 particles does not change during the entire process of crystal growth. Further these AlPO4-18 nanocrystals were employed for the preparation of thin films on silicon wafers via spin coating of stable AlPO4-18/EtOH solutions, and additional crystal growth of the seeded layers at elevated temperature was carried out. The structural evolution of the thin films was studied with grazing incidence diffraction using synchrotron X-ray radiation. The orientation of growing crystals is governed by the preferred orientation of the seeded particles deposited by spin coating approach.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
