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Title: Ionic liquid assisted hydrothermal fabrication of hierarchically organized γ-AlOOH hollow sphere

Abstract

Highlights: ► The γ-AlOOH hollow spheres were synthesized via an ionic liquid-assisted hydrothermal treatment. ► Ionic liquid plays an important role in the morphology of the product. ► Ionic liquid can be easily removed from the product and reused in next experiment. ► A “aggregation–solution–recrystallization” formation mechanism may occur in the system. -- Abstract: Hierarchically organized γ-AlOOH hollow spheres with nanoflake-like porous surface texture have been successfully synthesized via an ionic liquid-assisted hydrothermal synthesis method in citric acid monohydrate (CAMs). It was found that ionic liquid [bmim]{sup +}Cl{sup −} played an important role in the morphology of the product due to its strong interactions with reaction particles. The samples were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM). The results show that the product has narrow particle size distribution (500–900 nm particle diameter range), high specific surface area (240.5 m{sup 2}/g) and large pore volume (0.61 cm{sup 3}/g). The corresponding γ-Al{sub 2}O{sub 3} hollow spheres can be obtained by calcining it at 550 °C for 3 h. The proposed formation mechanism and other influencing factors of the γ-AlOOH hollow sphere material, such as reaction temperature, reaction duration, CAMs andmore » urea, have also been investigated.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)
Publication Date:
OSTI Identifier:
22215550
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CITRIC ACID; CRYSTAL GROWTH; FOURIER TRANSFORMATION; HYDROTHERMAL SYNTHESIS; INFRARED SPECTRA; LIQUIDS; MICROSTRUCTURE; MOLTEN SALTS; NANOSTRUCTURES; PARTICLE SIZE; POROUS MATERIALS; SCANNING ELECTRON MICROSCOPY; STRONG INTERACTIONS; SURFACES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Tang, Zhe, E-mail: tangzhe1983@163.com, Liu, Yunqi, E-mail: liuyq@upc.edu.cn, Li, Guangci, E-mail: liguangci1984@yahoo.com.cn, Hu, Xiaofu, E-mail: hjj19850922@126.cn, and Liu, Chenguang, E-mail: cgliu@upc.edu.cn. Ionic liquid assisted hydrothermal fabrication of hierarchically organized γ-AlOOH hollow sphere. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.030.
Tang, Zhe, E-mail: tangzhe1983@163.com, Liu, Yunqi, E-mail: liuyq@upc.edu.cn, Li, Guangci, E-mail: liguangci1984@yahoo.com.cn, Hu, Xiaofu, E-mail: hjj19850922@126.cn, & Liu, Chenguang, E-mail: cgliu@upc.edu.cn. Ionic liquid assisted hydrothermal fabrication of hierarchically organized γ-AlOOH hollow sphere. United States. doi:10.1016/J.MATERRESBULL.2012.08.030.
Tang, Zhe, E-mail: tangzhe1983@163.com, Liu, Yunqi, E-mail: liuyq@upc.edu.cn, Li, Guangci, E-mail: liguangci1984@yahoo.com.cn, Hu, Xiaofu, E-mail: hjj19850922@126.cn, and Liu, Chenguang, E-mail: cgliu@upc.edu.cn. Thu . "Ionic liquid assisted hydrothermal fabrication of hierarchically organized γ-AlOOH hollow sphere". United States. doi:10.1016/J.MATERRESBULL.2012.08.030.
@article{osti_22215550,
title = {Ionic liquid assisted hydrothermal fabrication of hierarchically organized γ-AlOOH hollow sphere},
author = {Tang, Zhe, E-mail: tangzhe1983@163.com and Liu, Yunqi, E-mail: liuyq@upc.edu.cn and Li, Guangci, E-mail: liguangci1984@yahoo.com.cn and Hu, Xiaofu, E-mail: hjj19850922@126.cn and Liu, Chenguang, E-mail: cgliu@upc.edu.cn},
abstractNote = {Highlights: ► The γ-AlOOH hollow spheres were synthesized via an ionic liquid-assisted hydrothermal treatment. ► Ionic liquid plays an important role in the morphology of the product. ► Ionic liquid can be easily removed from the product and reused in next experiment. ► A “aggregation–solution–recrystallization” formation mechanism may occur in the system. -- Abstract: Hierarchically organized γ-AlOOH hollow spheres with nanoflake-like porous surface texture have been successfully synthesized via an ionic liquid-assisted hydrothermal synthesis method in citric acid monohydrate (CAMs). It was found that ionic liquid [bmim]{sup +}Cl{sup −} played an important role in the morphology of the product due to its strong interactions with reaction particles. The samples were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM). The results show that the product has narrow particle size distribution (500–900 nm particle diameter range), high specific surface area (240.5 m{sup 2}/g) and large pore volume (0.61 cm{sup 3}/g). The corresponding γ-Al{sub 2}O{sub 3} hollow spheres can be obtained by calcining it at 550 °C for 3 h. The proposed formation mechanism and other influencing factors of the γ-AlOOH hollow sphere material, such as reaction temperature, reaction duration, CAMs and urea, have also been investigated.},
doi = {10.1016/J.MATERRESBULL.2012.08.030},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}