立方体纳米氧化镁的可控合成及其粒度影响因素的探究
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摘要
采用溶胶-凝胶法,以Mg(CH_3COO)_2·4H_2O为原料,草酸为络合剂和酸性试剂,从晶体形成机理入手,详细研究了不同粒径立方纳米氧化镁的制备工艺。采用XRD和SEM分别表征了纳米氧化镁的结构和形貌。结果表明,通过改变工艺条件可以制备出粒度可控的纳米氧化镁,反应温度是影响纳米氧化镁粒度与形貌的关键因素。
The preparation process of cubic nanometer magnesium oxide with different particle sizes was studied in detail by using Sol-Gel method,Mg( CH_3 COO)_2·4 H_2 O as raw material and oxalic acid as complexing agent and acid reagent. The structure and morphology of nano-Mg O were characterized by Xray diffraction( XRD) and Scanning electron microscopy( SEM). The results show that nano-magnesium oxide with controlled grain size can be prepared by changing the process conditions. The reaction temperature is the key factor that affects the size and morphology of nano-Mg O.
The preparation process of cubic nanometer magnesium oxide with different particle sizes was studied in detail by using Sol-Gel method,Mg( CH_3 COO)_2·4 H_2 O as raw material and oxalic acid as complexing agent and acid reagent. The structure and morphology of nano-Mg O were characterized by Xray diffraction( XRD) and Scanning electron microscopy( SEM). The results show that nano-magnesium oxide with controlled grain size can be prepared by changing the process conditions. The reaction temperature is the key factor that affects the size and morphology of nano-Mg O.
引文
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[2]Mutreja I,Singh S,Ali A.Biodiesel from mutton fat using KOH impregnated Mg O as heterogeneous catalysts[J].Renewable Energy,2011,36(8):2253-2258.
[3]Xu Y,Dervishi E,Biris A R,et al.Chirality-enriched semiconducting carbon nanotubes synthesized on high surface area Mg O-supported catalyst[J].Materials Letters,2011,65(12):1878-1881.
[4]Braulio M A L,Brant P O C,Bittencourt L R M,et al.Microsilica or Mg O grain size:Which one mostly affects the in situ spinel refractory castable expansion?[J].Ceramics International,2009,35(8):3327-3334.
[5]Rakmak N,Wiyaratn W,Bunyakan C,et al.Synthesis of Fe/Mg O nanocrystal catalysts by sol-gel method for hydrogen sulfide removal[J].Chemical Engineering Journal,2010,162(1):84-90.
[6]Christova K,Manov A,Nyhus J,et al.Bi2Sr2Ca Cu2Ox,bulk superconductor with Mg O particles embedded[J].Journal of Alloys&Compounds,2002,340(1):1-5.
[7]Nga N K,Hong P T,Lam T D,et al.A facile synthesis of nanostructured magnesium oxide particles for enhanced adsorption performance in reactive blue 19 removal[J].Journal of Colloid&Interface Science,2013(398):210-216.
[8]Nowak J D,Carter C B.Forming contacts and grain boundaries between Mg O nanoparticles[J].Journal of Materials Science,2009,44(9):2408-2418.
[9]Badr-Mohammadi M,Mobasherpour I,Rad E M.Synthesis of cubic Mg O nanostructure by an easy hydrothermal-calcinations method[J].Materials Letters,2014,15(2):88-92.
[10]张志刚,袁媛,刘昌胜.柠檬酸溶胶-凝胶纳米Mg O的分散及其抗菌性能的研究[J].中国生物医学工程学报,2006,25(6):770-775.
[11]Glaspell G,Hassan H M A,Elzatahry A,et al.Nanocatalysis on tailored shape supports:Au and Pd nanoparticles supported on Mg O nanocubes and Zn O nanobelts[J].Journal of Physical Chemistry B,2006,110(43):21387-21393.
[12]韩业斌.形貌粒径可控纳米Ce O2的制备及其形成机理研究[D].北京:北京工业大学,2006.
[13]Mastuli M S,Roshidah R,Mahat A M,et al.Sol-Gel synthesis of highly stable nano sized Mg O from magnesium oxalate dihydrate[J].Advanced Materials Research,2012,545:137-142.