Journal
MATERIALS
Volume 8, Issue 4, Pages 1752-1765Publisher
MDPI
DOI: 10.3390/ma8041752
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Funding
- National Natural Science Foundations of China [21276125, 20876077, 21476108]
- Program for Scientific Innovation Research of College Graduates in Jiangsu Province [CXZZ13_0443]
- Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Spherical MCM-48 mesoporous sieve co-doped with vanadium and iron was successfully synthesized via one-step hydrothermal method. The material was characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms, inductively coupled plasma (ICP), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance UV-vis spectra, and X-ray photoelectron spectra (XPS) techniques. Results indicated that the V-Fe-MCM-48 showed an ordered 3D cubic mesostructure with spherical morphology, narrow pore size distribution and high specific surface area. Most of vanadium and iron atoms existing as tetrahedral V4+ and Fe3+ species were co-doped into the silicate framework. The particle sizes of V-Fe-MCM-48 were smaller and the specific area was much higher than those of of V-MCM-48. Additionally, the synthesized V-Fe-MCM-48 exhibited improved hydrothermal stability compared with the pure MCM-48.
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