Two-dimensional porous γ-AlOOH and γ-Al2O3 nanosheets: Hydrothermal synthesis, formation mechanism and catalytic performance

Suli Liu; Changyun Chen; Qinpu Liu; Yiwei Zhuo; Dan Yuan; Zhihui Dai; Jianchun Bao

doi:10.1039/c5ra09772j

Two-dimensional porous γ-AlOOH and γ-Al₂O₃ nanosheets: Hydrothermal synthesis, formation mechanism and catalytic performance

Suli Liu, Changyun Chen, Qinpu Liu, Yiwei Zhuo, Dan Yuan, Zhihui Dai, Jianchun Bao

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

44 Scopus citations

Abstract

Novel two-dimensional (2D) γ-AlOOH porous nanosheets have been successfully prepared in a mixed system consisting of oleic acid (OA), dodecylamine (DDA), urea, and 1-octadecene. OA acted as a reaction reagent to form the Al-carboxyl precursor, DDA acted as a soft template and induced the γ-AlOOH sheet structure, and urea acted as a porogen. Porous γ-Al₂O₃ nanosheets were obtained by thermal decomposition of the γ-AlOOH. Furthermore, the obtained sheet-like γ-Al₂O₃ was used as a support to prepare a monodisperse Ag/γ-Al₂O₃ nanocatalyst. This catalyst exhibited superior catalytic activity compared to γ-Al₂O₃ nanosheets, pure Ag nanocrystals (NCs) and Ag/amorphous Al₂O₃ for the hydrogenation of nitroaromatic compounds, which can be explained by a higher concentration of Lewis type basic sites on sheet-like γ-Al₂O₃ leading to a higher concentration of nitrobenzene and more efficient hydrogenation.

Original language	English
Pages (from-to)	71728-71734
Number of pages	7
Journal	RSC Advances
Volume	5
Issue number	88
DOIs	https://doi.org/10.1039/c5ra09772j
State	Published - 17 Aug 2015
Externally published	Yes

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title = "Two-dimensional porous γ-AlOOH and γ-Al2O3 nanosheets: Hydrothermal synthesis, formation mechanism and catalytic performance",

abstract = "Novel two-dimensional (2D) γ-AlOOH porous nanosheets have been successfully prepared in a mixed system consisting of oleic acid (OA), dodecylamine (DDA), urea, and 1-octadecene. OA acted as a reaction reagent to form the Al-carboxyl precursor, DDA acted as a soft template and induced the γ-AlOOH sheet structure, and urea acted as a porogen. Porous γ-Al2O3 nanosheets were obtained by thermal decomposition of the γ-AlOOH. Furthermore, the obtained sheet-like γ-Al2O3 was used as a support to prepare a monodisperse Ag/γ-Al2O3 nanocatalyst. This catalyst exhibited superior catalytic activity compared to γ-Al2O3 nanosheets, pure Ag nanocrystals (NCs) and Ag/amorphous Al2O3 for the hydrogenation of nitroaromatic compounds, which can be explained by a higher concentration of Lewis type basic sites on sheet-like γ-Al2O3 leading to a higher concentration of nitrobenzene and more efficient hydrogenation.",

author = "Suli Liu and Changyun Chen and Qinpu Liu and Yiwei Zhuo and Dan Yuan and Zhihui Dai and Jianchun Bao",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

month = aug,

day = "17",

doi = "10.1039/c5ra09772j",

language = "英语",

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T1 - Two-dimensional porous γ-AlOOH and γ-Al2O3 nanosheets

T2 - Hydrothermal synthesis, formation mechanism and catalytic performance

AU - Liu, Suli

AU - Chen, Changyun

AU - Liu, Qinpu

AU - Zhuo, Yiwei

AU - Yuan, Dan

AU - Dai, Zhihui

AU - Bao, Jianchun

PY - 2015/8/17

Y1 - 2015/8/17

N2 - Novel two-dimensional (2D) γ-AlOOH porous nanosheets have been successfully prepared in a mixed system consisting of oleic acid (OA), dodecylamine (DDA), urea, and 1-octadecene. OA acted as a reaction reagent to form the Al-carboxyl precursor, DDA acted as a soft template and induced the γ-AlOOH sheet structure, and urea acted as a porogen. Porous γ-Al2O3 nanosheets were obtained by thermal decomposition of the γ-AlOOH. Furthermore, the obtained sheet-like γ-Al2O3 was used as a support to prepare a monodisperse Ag/γ-Al2O3 nanocatalyst. This catalyst exhibited superior catalytic activity compared to γ-Al2O3 nanosheets, pure Ag nanocrystals (NCs) and Ag/amorphous Al2O3 for the hydrogenation of nitroaromatic compounds, which can be explained by a higher concentration of Lewis type basic sites on sheet-like γ-Al2O3 leading to a higher concentration of nitrobenzene and more efficient hydrogenation.

AB - Novel two-dimensional (2D) γ-AlOOH porous nanosheets have been successfully prepared in a mixed system consisting of oleic acid (OA), dodecylamine (DDA), urea, and 1-octadecene. OA acted as a reaction reagent to form the Al-carboxyl precursor, DDA acted as a soft template and induced the γ-AlOOH sheet structure, and urea acted as a porogen. Porous γ-Al2O3 nanosheets were obtained by thermal decomposition of the γ-AlOOH. Furthermore, the obtained sheet-like γ-Al2O3 was used as a support to prepare a monodisperse Ag/γ-Al2O3 nanocatalyst. This catalyst exhibited superior catalytic activity compared to γ-Al2O3 nanosheets, pure Ag nanocrystals (NCs) and Ag/amorphous Al2O3 for the hydrogenation of nitroaromatic compounds, which can be explained by a higher concentration of Lewis type basic sites on sheet-like γ-Al2O3 leading to a higher concentration of nitrobenzene and more efficient hydrogenation.

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U2 - 10.1039/c5ra09772j

DO - 10.1039/c5ra09772j

M3 - 文章

AN - SCOPUS:84940481633

SN - 2046-2069

VL - 5

SP - 71728

EP - 71734

JO - RSC Advances

JF - RSC Advances

IS - 88

ER -

Two-dimensional porous γ-AlOOH and γ-Al₂O₃ nanosheets: Hydrothermal synthesis, formation mechanism and catalytic performance

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