Preparation of Porous Core/Shell Structure Fe2O3/Al Nanothermite Membrane by Template Method

doi:10.15541/jim20140622

Abstract

Abstract:

A three-dimensionally ordered macroporous(3DOM) α-Fe₂O₃membrane was prepared by inversing polystyrene(PS) spheres colloidal crystal template, and nano aluminum was then introduced into the 3DOM α-Fe₂O₃ skeleton using magnetron sputtering method. Scanning electron microscope(SEM) images show that nano Al coats on surface of α-Fe₂O₃ skeleton uniformly, and pore structure converts into a kind of diamond from previously suborbicular after aluminizing with wall thickness increasing from 32 nm to 100 nm. Simultaneously, elemental analysis of the membrane is investigated via energy dispersive spectrum(EDS). Differential scanning calorimety(DSC) results indicate that onset temperature of the Fe₂O₃/Al nanothermite membrane is 490℃, and thermite reaction between Al and Fe₂O₃ can be divided into solid-solid reaction and liquid-solid reaction. The total heat release is 1374.7 J/g. Ignition performance of the energetic membrane is investigated by laser ignition test. Sparks spatter outward with dazzling light can be observed for 2.6 ms, demonstrating that Fe₂O₃/Al nanothermite membrane can be ignited normally.

Key words: nanothermite, colloidal crystal template, three-dimensionally ordered macroporous, core/shell structure

CLC Number:

TB383

ZHENG Guo-Qiang, ZHANG Wen-Chao, XU Xing, SHEN Rui-Qi, DENG Ji-Ping, YE Ying-Hua. Preparation of Porous Core/Shell Structure Fe₂O₃/Al Nanothermite Membrane by Template Method[J]. Journal of Inorganic Materials, 2015, 30(6): 610-614.

Figures/Tables 6

Fig. 1 TEM image (a) of Ps spheres; SEM images (b) of colloidal crystal template; top view SEM image (c) of 3DOMα-Fe2O3; cross section view SEM image (d) of 3DOM α-Fe2O3

Fig. 2 XRD pattern of 3DOM α-Fe2O3

Fig. 3 Top view (a) and cross section view (b) SEM images of 3DOM α-Fe2O3 after Al deposition

Fig. 4 EDS spectrum of core/shell structure Fe2O3/Al nanothermite membrane after Al deposition

Fig. 5 DSC curve of core/shell structure Fe2O3/Al membrane

Fig. 6 High speed camera pictures of 3DOM Fe2O3/Al membrane

References 23

[1]	OHKURA Y, LIU S Y, RAO P M, et al.Synthesis and ignition of energetic CuO/Al core/shell nanowires.Proceedings of the Combustion Institute, 2011, 33(2): 1909-1915.
[2]	ROSSI C, ZHANG K, ESTEVE D, et al.Nanoenergetic materials for MEMS: a review.Journal of Microelectromechanical Systems, 2007, 16(4): 919-931.
[3]	ZHOU C, LI G P, LUO Y J.Research progress on nano thermite.New Chemical Materials, 2010, 38(4): 4-7.
[4]	WANG Y, LI F S, JIANG W, et al. Synthesis of Fe2O3/Al nanocomposite and research on its thermite reaction. Initiators & Pyrotechnics, 2008(4): 11-14.
[5]	SEVERAC F, ALPHONSE P, ESTEVE A, et al.High-energy Al/CuO nanocomposites obtained by DNA-directed assembly.Advanced Functional Materials, 2012, 22(2): 323-329.
[6]	WANG X Q, ZHANG L, ZHU S G, et al. Preparation of iron oxide hollow column with manipulative shape.Chinese Journal of Inorganic Chemistry, 2012, 28(11): 2313-2320.
[7]	OHKURA Y, RAO PM, CHO IS, et al. Reducing minimum flash ignition energy of Al microparticles by addition of WO3 nanoparticles. Applied Physics Letters, 2013, 102(4): 043108-1-4.
[8]	CHENG J L, HNG H H, NG H Y, et al.Synthesis and characterization of self-assembled nanoenergetic Al-Fe2O3 thermite system.Journal of Physics and Chemistry of Solids, 2010, 71(2): 90-94.
[9]	TILLOTSON T M, GASH A E, SIMPSON R L, et al.Nanostructured energetic materials using Sol-Gel methodologies.Journal of Non-crystalline Solids, 2001, 285(1): 338-345.
[10]	BLOBAUM K J, REISS M E, LAWRENCE J M P, et al. Deposition and characterization of a self-propagating CuOx/Al thermite reaction in a multilayer foil geometry.Journal of Applied Physics, 2003, 94(5): 2915-2922.
[11]	FERGUSON J D, BUECHLER K J, WEIMER A W, et al.SnO2 atomic layer deposition on ZrO2 and Al nanoparticles: pathway to enhanced thermite materials.Powder Technology, 2005, 156(2): 154-163.
[12]	PRENTICE D, PANTOYA M L, GASH A E.Combustion wave speeds of Sol-Gel-synthesized tungsten trioxide and nano-aluminum: The effect of impurities on flame propagation.Energy & Fuels, 2006, 20(6): 2370-2376.
[13]	GASH A E, TILLOTSON T M, SATCHER J H, et al.Use of epoxides in the Sol-Gel synthesis of porous iron(III) oxide monoliths from Fe(III)salts.Chemistry of Materials, 2001, 13(3): 999-1007.
[14]	PLANTIER K B, PANTOYA M L, GASH A E.Combustion wave speeds of nanocomposite Al/Fe2O3: the effects of Fe2O3 particle synthesis technique.Combustion and Flame, 2005, 140(4): 299-309.
[15]	BLOBAUM K J, WAGNER A J, PLITZKO J M, et al.Investigating the reaction path and growth kinetics in CuOx/Al multilayer foils.Journal of Applied Physics, 2003, 94(5): 2923-2929.
[16]	ZHANG K, ROSSI C, RODRIGUEZ G A A, et al. Development of a nano-Al/CuO based energetic material on silicon substrate.Applied Physics Letters, 2007, 91(11): 113-117.
[17]	XU D G, YANG Y, CHENG H, et al.Integration of nano-Al with Co3O4 nanorods to realize high-exothermic core-shell nanoenergetic materials on a silicon substrate.Combustion and Flame, 2012, 159(6): 2202-2209.
[18]	ZHANG K, ROSSI C, ALPHONSE P, et al.Integrating Al with NiO nano honeycomb to realize an energetic material on silicon substrate.Applied Physics A: Materials Science & Processing, 2009, 94(4): 957-962.
[19]	SADAKANE M, HORIUCHI T, KATO N, et al.Facile preparation of three-dimensionally ordered macroporous alumina, iron oxide, chromium oxide, manganese oxide, and their mixed-metal oxides with high porosity.Chemistry of Materials, 2007, 19(23): 5779-5785.
[20]	YAN H W, BLANFORD C F, HOLLAND B T, et al.General synthesis of periodic macroporous solids by templated salt precipitation and chemical conversion.Chemistry of Materials, 2000, 12(4): 1134-1141.
[21]	XIA Y N, BYRON G, YIN Y D, et al.Monodispersed colloidal spheres: old materials with new applications.Advanced Materials, 2000, 12(10): 693-713.
[22]	YAN H W, BLANFORD C F, LYTLE J C, et al.Influence of processing conditions on structures of 3D ordered macroporous metals prepared by colloidal crystal templating.Chemistry of Materials, 2001, 13(11): 4314-4321.
[23]	ZHANG W, YIN B, SHEN R, et al.Significantly enhanced energy output from 3D ordered macroporous structured Fe2O3/Al nanothermite film.ACS Applied Materials & Interfaces, 2013, 5(2): 239-242.

Preparation of Porous Core/Shell Structure Fe₂O₃/Al Nanothermite Membrane by Template Method

RichHTML

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

Figures/Tables 6

References 23

Related Articles 2

Recommended Articles

Metrics

Comments

[1]	LIU Shu-Ling,TONG Jian-Bo. Solvothermal Synthesis of Iron Nitride Nanocrystal [J]. Journal of Inorganic Materials, 2009, 24(5): 989-992.
[2]	SHEN Yong,WU Quan-Zhou,LIAO Ju-Fang,LI Yu-Guang. Synthesis and Characterization of Three-Dimensionally Ordered Macroporous (3DOM) Titania-Silica Mixed Oxides [J]. Journal of Inorganic Materials, 2003, 18(2): 401-406.