DNA自组装制备CuO/Al纳米复合含能材料
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摘要
为了制备结构均匀且热性能优异的纳米复合含能材料,采用脱氧核糖核酸(DNA)自组装法在室温和水相中制备了CuO/Al纳米复合含能材料。采用红外光谱(FT?IR)、动态光散射(DLS)、透射电镜(TEM)、扫描电镜(SEM)以及差示扫描量热仪(DSC)表征了纳米复合含能材料的结构及热反应性能。结果表明,通过DNA自组装法成功制备了一种微观结构更均匀的CuO/Al纳米复合含能材料;DNA自组装样品与同配比物理共混样品相比具有更高的反应热,且当φ=1.6时,自组装样品反应热达到1520 J?g~(-1),比同配比物理共混样品(999 J?g~(-1))提高52.15%。
To prepare nanocomposite energetic materials with homogeneous structure and excellent thermal properties,CuO/Al nanocomposite energetic materials were prepared by deoxyribonucleic acid(DNA)self?assembly method at room temperature and in water phase. The structures and thermal reaction properties of the nanocomposite energetic materials were characterized by Fourier transform infrared(FT?IR)spectroscopy,dynamic light scattering(DLS),transmission electron microscope(TEM),scanning electron microscope(SEM)and differential scanning calorimeter(DSC). Results show that CuO/Al nanocomposite en?ergetic materials with more homogeneous structure are successfully prepared by DNA self?assembly. The reaction heat of DNA self?assembled CuO/Al nanocomposites is higher than that of physically mixed samples with the same proportion and at φ=1.6,the reaction heat of DNA self?assembled CuO/Al nanocomposites reaches 1520 J·g~(-1),which is 52.15% higher than that of the physically mixed samples(999 J·g~(-1)).
To prepare nanocomposite energetic materials with homogeneous structure and excellent thermal properties,CuO/Al nanocomposite energetic materials were prepared by deoxyribonucleic acid(DNA)self?assembly method at room temperature and in water phase. The structures and thermal reaction properties of the nanocomposite energetic materials were characterized by Fourier transform infrared(FT?IR)spectroscopy,dynamic light scattering(DLS),transmission electron microscope(TEM),scanning electron microscope(SEM)and differential scanning calorimeter(DSC). Results show that CuO/Al nanocomposite en?ergetic materials with more homogeneous structure are successfully prepared by DNA self?assembly. The reaction heat of DNA self?assembled CuO/Al nanocomposites is higher than that of physically mixed samples with the same proportion and at φ=1.6,the reaction heat of DNA self?assembled CuO/Al nanocomposites reaches 1520 J·g~(-1),which is 52.15% higher than that of the physically mixed samples(999 J·g~(-1)).
引文
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[5]Malchi J Y,Foley T J,Yetter R A.Electrostatically self?assem?bled nanocomposite reactive microspheres[J].ACS Applied Materials&Interfaces,2009,1(11):2420-2423.
[6]Zhang T,Ma Z,Li G,et al.A new strategy for the fabrication of high performance reactive microspheres via energetic poly?electrolyte assembly[J].RSC Advances,2017,7(2):904-913.
[7]Sun W,Lu Y,Mao J,et al.Multidimensional sensor for pat?tern recognition of proteins based on DNA?gold nanoparticles conjugates[J].Analytical Chemistry,2015,87(6):3354-3359.
[8]Chou L Y T,Song F,Chan W C W.Engineering the structure and properties of DNA?nanoparticle superstructures using poly?valent counterions[J].Journal of the American Chemical Soci?ety,2016,138(13):4565-4572.
[9]Yang N,You T T,Liang X,et al.An ultrasensitive near?infra?red satellite SERS sensor:DNA self?assembled gold nanorod/nanospheres structure[J].RSC Advances,2017,7(15):9321-9327.
[10]Wang G,Akiyama Y,Kanayama N,et al.Directed assembly of gold nanorods by terminal?base pairing of surface?grafted DNA[J].Small,2017,13(44):1702137.
[11]Tang L,Yu G,Tan L,et al.Highly stabilized core?satellite gold nanoassemblies in vivo:DNA?directed self?assembly,PEG modification and cell imaging[J].Scientific Reports,2017,7(1):8553.
[12]Severac F,Alphonse P,Estève A,et al.High?energy Al/CuOnanocomposites obtained by DNA?directed assembly[J].Ad?vanced Functional Materials,2012,22(2):323-329.
[13]Calais T,Bourrier D,Bancaud A,et al.DNA grafting and ar?rangement on oxide surfaces for self?assembly of Al and CuOnanoparticles[J].Langmuir,2017,33(43):12193-12203.
[14]Andrea K A,Wang L,Carrier A J,et al.Adsorption of oli?go?DNA on magnesium aluminum?layered double?hydroxide nanoparticle surfaces:mechanistic implication in gene deliv?ery[J].Langmuir,2017,33(16):3926-3933.
[15]Kuramitz H,Sugawara K,Tanaka S.Electrochemical sensing of avidin?biotin interaction using redox markers[J].Electro?analysis:an International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis,2000,12(16):1299-1303.
[16]郑保辉,王平胜,罗观,等.超级铝热剂反应特性研究[J].含能材料,2015,23(10):1004-1009.ZHENG Bao?hui,WANG Ping?sheng,LUO Guan,et al.Reac?tion properties of super thermites[J].Chinese Journal of Energet?ic Materials(Hanneng Cailiao),2015,23(10):1004-1009.
[17]王毅,李凤生,姜炜,等.A1/Fe2O3纳米复合铝热剂的制备及其反应特性研究[J]火工品,2008(4):11-14.WANG Yi,LI Feng?sheng,JIANG Wei,et al.Synthesis of Al/Fe2O3nano?composite and research on its thermite reaction[J].Initiators&Pyrotechnics,2008(4):11-14.
[18]Lee K,Kim D,Shim J,et al.Formation of Cu layer on Al nanoparticles during thermite reaction in Al/CuO nanoparticle composites:Investigation of off?stoichiometry ratio of Al and CuO nanoparticles for maximum pressure change[J].Combus?tion and Flame,2015,162(10):3823-3828.