Abstract
Typical synthesis of α″-Fe16N2 nanoparticles involves nitridation of iron nanoparticles obtained from the reduction of iron oxide, during which the iron nanoparticles are prone to agglomerate and make the nitridation difficult. Herein, we report a method to obtain α″-Fe16N2 phase by loading the iron oxide (hematite, α-Fe2O3) precursors in the channels of the ordered mesoporous silica (SBA-15), and the α-Fe2O3/SBA-15 was prepared by means of a facile impregnation and calcination method. The results showed that the nitridation efficiency was greatly improved than previous reports and high α″-Fe16N2 content (∼92 wt%) was synthesized at 160 °C for 8 h. Transmission electron microscopy and N2 adsorption-desorption characterizations demonstrate that the as-synthesized α″-Fe16N2/SBA-15 nanocomposites maintained the ordered hexagonal mesoporous structures, and α″-Fe16N2 was successfully filled inside the mesochannels of SBA-15, indicating the SBA-15 has taken great effect in the remarkable increasement of nitridation efficiency.
Sign-in/Register to access full text options 
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.
