期刊
CARBON
卷 49, 期 2, 页码 545-555出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.09.055
关键词
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资金
- NSF of China [20721063, 20821140537, 20890123]
- State Key Basic Research Program of PRC [2006CB202502, 2009AA033701]
- Shanghai Nanotech Promotion Center [0852nm00100]
- Science & Technology Commission of Shanghai Municipality [08DZ2270500]
- Shanghai Leading Academic Discipline Project [B108]
- National Research Foundation of Korea (NRF) through the Korea-China Joint Research Center Program on Mesoporous Thin Films [K20803001459-10B1200-03110]
- Acceleration Research Program [2010-0019482]
- National Research Foundation of Korea [2009-0078791, 2008-00444] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ordered mesoporous carbon/nanoparticle nickel composites have been synthesized via multi-component co-assembly strategy associated with a direct carbonization process from resol, tetraethyl orthosilicate, Ni(NO3)(2)center dot 6H(2)O and triblock copolymer F127 and subsequent silicates removal with NaOH solution. The incorporation of rigid silicates in the pore walls can reduce framework shrinkage significantly during the pyrolysis process, creating large mesopores. Moreover, plenty of complementary small pores caused by silica removal are observed in the carbon pore walls, which contribute to the large surface area. The mesoporous carbon/nanoparticle nickel composites with a low Ni content (1.7 wt%) possess ordered two-dimensional hexagonal structure, large mesopores (6.8 nm), high surface area (1580 m(2) g(-1)) and large pore volume (1.42 cm(3) g(-1)). Magnetic Ni nanocrystals with particle size of similar to 16.0 nm are confined in the matrix of carbon frameworks. With increase of Ni content, the surface area and pore volume of the composites decrease. The particle size of metallic Ni nanocrystals increases up to 20.3 nm, when its content increases to 10 wt%. These carbon/nanoparticle nickel composites with high surface area, large pore size and superparamagnetic property show excellent adsorption properties for bulky dye fuchsin base and an easy separation procedure. (C) 2010 Elsevier Ltd. All rights reserved.
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