Abstract
Co–B films were synthesized through the solvent evaporation-assisted chemical reduction method by using a mixed-surfactant solution containing Span 40 and (1S)-(+)-10-camphorsulfonic acid. With the characterization of x-ray diffraction, selected-area electron diffraction, x-ray photoelectron spectroscopy, scanning electron micrography, and transmission electron micrography, the resulting Co–B films were identified to be amorphous alloys with mesoporous structure. The synergistic effect of two kinds of surfactants is essential for the formation of mesoporous structure. During liquid-phase cinnamaldehyde hydrogenation to cinnamyl alcohol, the mesoporous Co–B amorphous alloy films exhibited a much higher activity and better selectivity than the solid Co–B nanoparticles prepared by direct reduction of cobalt ions with borohydride. The enhanced activity is attributed to both the mesoporous and the film structure, which provides more Co active sites for the adsorption and diffusion of reactant molecules. The improved selectivity may be related to the difference in surface curvature.
Similar content being viewed by others
References
W. Klement, R.H. Willens, and P. Duwez: Non-crystalline structure in solidified gold-silicon alloys. Nature 187, 869 (1960).
Van J. Wonterghem, S. Mrup, C.J.W. Koch, S.W. Charles, and S. Wells: Formation of ultrafine amorphous alloy particles by reduction in aqueous solution. Nature 322, 622 (1986).
A. Molnar, G.V. Smith, and M. Bartok: New catalytic materials from amorphous metal alloys. Adv. Catal. 36, 329 (1989).
A. Baiker: Metallic glasses in heterogeneous catalysis. Faraday Discuss. Chem. Soc. 87, 239 (1989).
Y. Chen: Chemical preparation and characterization of metalmetalloid ultrafine amorphous alloy particles. Catal. Today 44, 3 (1998).
J.F. Deng, H.X. Li, and W.J. Wang: Progress in design of new amorphous alloy catalysts. Catal. Today 51, 113 (1999).
R. Schlgl and S.B. Hamid Abd: Nanocatalysis: Mature science revisited or something really new. Angew. Chem. Int. Ed. 43, 1628 (2004).
H. Zhang, Q. Zhu, Y. Zhang, Y. Wang, L. Zhao, and B. Yu: Onepot synthesis and hierarchical assembly of hollow Cu2O microspheres with nanocrystals-composed porous multishell and their gas-sensing properties. Adv. Funct. Mater. 17, 2766 (2007).
G.S. Attard, C.G. Gltner, J.M. Corker, S. Henke, and R.H. Templer: Liquid-crystal templates for nanostructured metals. Angew. Chem., Int. Ed. Engl. 36, 1315 (1997).
F. Schth: Non-siliceous mesostructured and mesoporous materials. Chem. Mater. 13, 3184 (2001).
Y. Yamauchi and K. Kuroda: Rational design of mesoporous metals and related nanomaterials by a soft-template approach. Chem. Asian J. 3, 664 (2008).
A. Saramat, M. Andersson, S. Hant, P. Thormhlen, M. Skoglundh, G.S. Attard, and A.E.C. Palmqvist: Differences in catalytic properties between mesoporous and nanoparticulate platinum. Eur. Phys. J. D 43, 209 (2007).
H.X. Li, Q.F. Zhao, Y. Wan, W.L. Dai, and M.H. Qiao: Selfassembly of mesoporous NiB amorphous alloy catalysts. J. Catal. 244, 251 (2006).
H. Li, H.X. Yang, and H.X. Li: Highly active mesoporous CoB amorphous alloy catalyst for cinnamaldehyde hydrogenation to cinnamyl alcohol. J. Catal. 251, 233 (2007).
Q. Meng, H. Li, and H.X. Li: Self-assembly of mesoporous ruthenium-boron amorphous alloy catalysts with enhanced activity in maltose hydrogenation to maltitol. J. Phys. Chem. C 112, 11448 (2008).
Y.F. Lu, R. Ganguli, C.A. Drewien, M.T. Anderson, C.J. Brinker, W.L. Gong, Y.X. Guo, H. Soyez, B. Dunn, M.B. Huang, and J.I. Zink: Continuous formation of supported cubic and hexagonal mesoporous films by sol-gel dip-coating. Nature 389, 364 (1997).
Y. Yamauchi, T. Ohsuna, and K. Kuroda: Synthesis and structural characterization of a highly ordered mesoporous PtRu alloy via evaporation-mediated direct templating. Chem. Mater. 19, 1335 (2007).
G. Sakai, T. Yoshimura, S. Isohata, M. Uota, H. Kawasaki, T. Kuwahara, D. Fujikawa, and T. Kijima: Synthesis of nanogroove- network-structured platinum nanosheets and their carbonsupported forms using a mixed-surfactant templating approach. Adv. Mater. 19, 237 (2007).
K. Luo, C.T. Walker, and K.J. Edler: Mesoporous silver films from dilute mixed-surfactant solutions by using dip-coating. Adv. Mater. 19, 1506 (2007).
Y. Pei, H.R. Hu, J. Fang, M.H. Qiao, W.L. Dai, K.N. Fan, and H.X. Li: Liquid phase hydrogenation of crotonaldehyde over Sn-promoted amorphous CoB catalysts. J. Mol. Catal. A: Chem. 211, 243 (2004).
Y. Pei, J.Q. Wang, Q. Fu, P.J. Guo, M.H. Qiao, S.R. Yan, and K.N. Fan: A non-noble amorphous CoFeB catalyst highly selective in liquid phase hydrogenation of crotonaldehyde to crotyl alcohol. New J. Chem. 29, 992 (2005).
Y. Pei, P.J. Guo, M.H. Qiao, H.X. Li, S.Q. Wei, H.Y. He, and K.N. Fan: The modification effect of Fe on amorphous CoB alloy catalyst for chemoselective hydrogenation of crotonaldehyde. J. Catal. 248, 303 (2007).
T.B.L.W. Marinellik, S. Nabuurs, and V. Ponec: Activity and selectivity in the reactions of substituted a, -unsaturated aldehydes. J. Catal. 151, 431 (1995).
H.X. Li, Y.D. Wu, H.S. Luo, M.H. Wang, and Y.P. Xu: Liquid phase hydrogenation of acetonitrile to ethylamine over the CoB amorphous alloy catalyst. J. Catal. 214, 15 (2003).
J.J.F. Scholten, A.P. Pijers, and A.M.L. Hustings: Surface characterization of supported and nonsupported hydrogenation catalysts. Catal. Rev.Sci. Eng. 27, 151 (1985).
S.A. Curran, D. Zhang, S. Dundigal, and W. Blau: Doping properties of polydithienylmethine: A study on the correlation between polymer chain length, spectroscopy, and transport. J. Phys. Chem. B 110, 3924 (2006).
K. Lee, H. Kwag, B. Kim, G.J. Kim, K.H. Kim, and S. Choe: Temperature-dependent desorption of surfactants in LLDPE blend films. J. Polym. Sci., Part B: Polym. Phys. 39, 218 (2001).
A. Yokoyama, H. Komiyama, H. Inoue, T. Masumoto, and H.M. Kimura: The hydrogenation of carbon monoxide by amorphous ribbons. J. Catal. 68, 355 (1981).
S. Klein, J.A. Martens, R. Parton, K. Vercruysse, P.A. Jacobs, and W.F. Maier: Amorphous microporous mixed oxides as selective redox catalysts. Catal. Lett. 38, 209 (1996).
N.S. McIntyre and M.G. Cook: X-ray photoelectron studies on some oxides and hydroxides of cobalt, nickel, and copper. Anal. Chem. 47, 2208 (1975).
H. Li, H.X. Li, W.L. Dai, W.J. Wang, Z.G. Fang, and J.F. Deng: XPS studies on surface electronic characteristics of NiB and NiP amorphous alloy and its correlation to their catalytic properties. Appl. Surf. Sci. 152, 25 (1999).
G.N. Glavee, K.J. Klabunde, C.M. Sorensen, and G.C. Hadjipanayis: Sodium borohydride reduction of cobalt ions in nonaqueous media. Formation of ultrafine particles (nanoscale) of cobalt metal. Inorg. Chem. 32, 474 (1993).
H.X. Li, H. Li, W.L. Dai, and M.H. Qiao: Preparation of the NiB amorphous alloys with variable boron content and its correlation to the hydrogenation activity. Appl. Catal., A 238, 119 (2003).
J. Zhang, Z. Dai, J. Bao, N. Zhang, and M.A. Lpez-Quintela: Self-assembly of Co-based nanosheets into novel nest-shaped nanostructures: Synthesis and characterization. J. Colloid Interface Sci. 305, 339 (2007).
B.R. Shen, S.Q. Wei, K.N. Fan, and J.F. Deng: EXAFS study on ultrafine NiCoB amorphous catalysts. Appl. Phys. A 65, 295 (1997).
Ö Dag, S. Alayoğlu, C. Tura, and Ö Celik: Lyotropic liquidcrystalline phase of oligo(ethylene oxide) surfactant/transition metal salt and the synthesis of mesostructured cadmium sulfide. Chem. Mater. 15, 2711 (2003).
H. Noller and W.M. Lin: Activity and selectivity of nickelcopper/alumina catalysts for hydrogenation of crotonaldehyde and mechanism of hydrogenation. J. Catal. 85, 25 (1984).
E. Boellaard, R.J. Vreeburg, O.L.J. Gijzeman, and J.W. Geus: The interaction of carbon monoxide with nickel-iron alloys. A comparison between single crystal surfaces and supported catalysts. J. Mol. Catal. 92, 299 (1994).
P. Gallezot and D. Richard: Selective hydrogenation of, -unsaturated aldehydes. Catal. Rev.Sci. Eng. 40, 81 (1998).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, H., Jun, L., Yang, H. et al. Mesoporous Co–B amorphous alloy films with enhanced catalytic efficiency prepared from a mixed-surfactant solution. Journal of Materials Research 24, 3300–3307 (2009). https://doi.org/10.1557/jmr.2009.0407
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/jmr.2009.0407