Synthesis of nanostructured mesoporous silica materials containing manganese

Lian zhou Wang; Jian lin Shi; Jian Yu; Dong sheng Yan

doi:10.1016/S0965-9773(99)00009-4

Synthesis of nanostructured mesoporous silica materials containing manganese

Lian zhou Wang, Jian lin Shi, Jian Yu, Dong sheng Yan

Chinese Academy of Sciences

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

41 Scopus citations

Abstract

The nanostructured mesoporous silica MCM-41 materials with different amounts of manganese have been synthesized under basic conditions at room temperature. The characteristics of the Mn-containing mesoporous samples were investigated by XRD, FTIR, N₂ adsorption, ²⁹Si MAS NMR and HREM techniques. It has been shown that the (100) peak intensity of XRD patterns became weakened and the specific surface area of materials decreased monotonously with the increase of Mn contents. FTIR results indicated that Mn ions could be incorporated into the Si-O framework and lead to the vibration of Si-O-Mn bond. ²⁹Si MAS NMR results suggested that the values of [SiO₄] tetrahedra in the framework decreased with the increase of Mn ions addition, resulting in the decrease of Q₄/Q₃ ratio. It could be seen from HREM images that nanostructured framework of Mn-modified mesoporous silica was distorted, and lamellar structure co-existed with hexagonal structure in some area.

Original language	English
Pages (from-to)	1289-1299
Number of pages	11
Journal	Nanostructured Materials
Volume	10
Issue number	8
DOIs	https://doi.org/10.1016/S0965-9773(99)00009-4
State	Published - 1998
Externally published	Yes

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title = "Synthesis of nanostructured mesoporous silica materials containing manganese",

abstract = "The nanostructured mesoporous silica MCM-41 materials with different amounts of manganese have been synthesized under basic conditions at room temperature. The characteristics of the Mn-containing mesoporous samples were investigated by XRD, FTIR, N2 adsorption, 29Si MAS NMR and HREM techniques. It has been shown that the (100) peak intensity of XRD patterns became weakened and the specific surface area of materials decreased monotonously with the increase of Mn contents. FTIR results indicated that Mn ions could be incorporated into the Si-O framework and lead to the vibration of Si-O-Mn bond. 29Si MAS NMR results suggested that the values of [SiO4] tetrahedra in the framework decreased with the increase of Mn ions addition, resulting in the decrease of Q4/Q3 ratio. It could be seen from HREM images that nanostructured framework of Mn-modified mesoporous silica was distorted, and lamellar structure co-existed with hexagonal structure in some area.",

author = "Wang, \{Lian zhou\} and Shi, \{Jian lin\} and Jian Yu and Yan, \{Dong sheng\}",

year = "1998",

doi = "10.1016/S0965-9773(99)00009-4",

language = "英语",

volume = "10",

pages = "1289--1299",

journal = "Nanostructured Materials",

issn = "0965-9773",

publisher = "Pergamon Press Ltd.",

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}

TY - JOUR

T1 - Synthesis of nanostructured mesoporous silica materials containing manganese

AU - Wang, Lian zhou

AU - Shi, Jian lin

AU - Yu, Jian

AU - Yan, Dong sheng

PY - 1998

Y1 - 1998

N2 - The nanostructured mesoporous silica MCM-41 materials with different amounts of manganese have been synthesized under basic conditions at room temperature. The characteristics of the Mn-containing mesoporous samples were investigated by XRD, FTIR, N2 adsorption, 29Si MAS NMR and HREM techniques. It has been shown that the (100) peak intensity of XRD patterns became weakened and the specific surface area of materials decreased monotonously with the increase of Mn contents. FTIR results indicated that Mn ions could be incorporated into the Si-O framework and lead to the vibration of Si-O-Mn bond. 29Si MAS NMR results suggested that the values of [SiO4] tetrahedra in the framework decreased with the increase of Mn ions addition, resulting in the decrease of Q4/Q3 ratio. It could be seen from HREM images that nanostructured framework of Mn-modified mesoporous silica was distorted, and lamellar structure co-existed with hexagonal structure in some area.

AB - The nanostructured mesoporous silica MCM-41 materials with different amounts of manganese have been synthesized under basic conditions at room temperature. The characteristics of the Mn-containing mesoporous samples were investigated by XRD, FTIR, N2 adsorption, 29Si MAS NMR and HREM techniques. It has been shown that the (100) peak intensity of XRD patterns became weakened and the specific surface area of materials decreased monotonously with the increase of Mn contents. FTIR results indicated that Mn ions could be incorporated into the Si-O framework and lead to the vibration of Si-O-Mn bond. 29Si MAS NMR results suggested that the values of [SiO4] tetrahedra in the framework decreased with the increase of Mn ions addition, resulting in the decrease of Q4/Q3 ratio. It could be seen from HREM images that nanostructured framework of Mn-modified mesoporous silica was distorted, and lamellar structure co-existed with hexagonal structure in some area.

UR - https://www.scopus.com/pages/publications/0032277678

U2 - 10.1016/S0965-9773(99)00009-4

DO - 10.1016/S0965-9773(99)00009-4

M3 - 文章

AN - SCOPUS:0032277678

SN - 0965-9773

VL - 10

SP - 1289

EP - 1299

JO - Nanostructured Materials

JF - Nanostructured Materials

IS - 8

ER -

Synthesis of nanostructured mesoporous silica materials containing manganese

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