Spherical V-Fe-MCM-48: The synthesis, characterization and hydrothermal stability

Wang Qian; Haiqing Wang; Jin Chen; Yan Kong

doi:10.3390/ma8041752

Spherical V-Fe-MCM-48: The synthesis, characterization and hydrothermal stability

Wang Qian, Haiqing Wang, Jin Chen, Yan Kong

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1752-1765
Number of pages	14
Journal	Materials
Volume	8
Issue number	4
DOIs	https://doi.org/10.3390/ma8041752
State	Published - 2015

Keywords

Co-doping
Hydrothermal stability
MCM-48
Mesoporous sieve
Morphology

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title = "Spherical V-Fe-MCM-48: The synthesis, characterization and hydrothermal stability",

abstract = "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.",

keywords = "Co-doping, Hydrothermal stability, MCM-48, Mesoporous sieve, Morphology",

author = "Wang Qian and Haiqing Wang and Jin Chen and Yan Kong",

note = "Publisher Copyright: {\textcopyright} 2015 by the authors; licensee MDPI, Basel, Switzerland.",

year = "2015",

doi = "10.3390/ma8041752",

language = "英语",

volume = "8",

pages = "1752--1765",

journal = "Materials",

issn = "1996-1944",

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T1 - Spherical V-Fe-MCM-48

T2 - The synthesis, characterization and hydrothermal stability

AU - Qian, Wang

AU - Wang, Haiqing

AU - Chen, Jin

AU - Kong, Yan

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Co-doping

KW - Hydrothermal stability

KW - MCM-48

KW - Mesoporous sieve

KW - Morphology

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U2 - 10.3390/ma8041752

DO - 10.3390/ma8041752

M3 - 文章

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VL - 8

SP - 1752

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JO - Materials

JF - Materials

IS - 4

ER -

Spherical V-Fe-MCM-48: The synthesis, characterization and hydrothermal stability

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Keywords

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