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Research Article | Open Access

Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation

Binghui Wu§, Hai Zhang§, Cheng Chen, Shuichao Lin, Nanfeng Zheng()
State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China

§These authors contributed equally to this work.

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Abstract

Au nanoparticles epitaxially grown on Fe3O4 in Au (6.7 nm)-Fe3O4 dumbbell nanoparticles exhibit excellent stability against sintering, but display negligible catalytic activity in CO oxidation. Starting from various supported Au (6.7 nm)-Fe3O4 catalysts prepared by the colloidal deposition method, we have unambiguously identified the significance of the Au-TiO2 interface in CO oxidation, without any possible size effect of Au. In situ thermal decomposition of TiO2 precursors on Au-Fe3O4 was found to be an effective way to increase the Au-TiO2 interface and thereby optimize the catalytic performance of TiO2-supported Au-Fe3O4 dumbbell nanoparticles. By reducing the size of Fe3O4 from 15.2 to 4.9 nm, the Au-TiO2 contact was further increased so that the resulting TiO2-supported Au (6.7 nm)-Fe3O4 (4.9 nm) dumbbell particles become highly efficient catalysts for CO oxidation at room temperature.

Keywords

Gold nanocatalystssupport effectCO oxidationAu-Fe3O4dumbbell nanoparticles

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References

1

Haruta, M. Catalysis of gold nanoparticles deposited on metal oxides. Cattech 2002, 6, 102-115.

Crossref Google Scholar
2

Haruta, M. When gold is not noble: Catalysis by nanoparticles. Chem. Rec. 2003, 3, 75-87.

Crossref Google Scholar
3

Haruta, M. Gold as a novel catalyst in the 21st century: Preparation, working mechanism and applications. Gold Bull. 2004, 37, 27-36.

Crossref Google Scholar
4

Bond, G. C.; Thompson, D. T. Catalysis by gold. Catal. Rev. -Sci. Eng. 1999, 41, 319-388.

Crossref Google Scholar
5

Chen, M. S.; Goodman, D. W. The structure of catalytically active gold on titania. Science 2004, 306, 252-255.

Crossref Google Scholar
6

Hughes, M. D.; Xu, Y. J.; Jenkins, P.; McMorn, P.; Landon, P.; Enache, D. I.; Carley, A. F.; Attard, G. A.; Hutchings, G. J.; King, F. et al. Tunable gold catalysts for selective hydrocarbon oxidation under mild conditions. Nature 2005, 437, 1132-1135.

Crossref Google Scholar
7

Hashmi, A. S. K.; Hutchings, G. J. Gold catalysis. Angew. Chem. Int. Ed. 2006, 45, 7896-7936.

Crossref Google Scholar
8

Corma, A.; Garcia, H. Supported gold nanoparticles as catalysts for organic reactions. Chem. Soc. Rev. 2008, 37, 2096-2126.

Crossref Google Scholar
9

Corma, A.; Serna, P. Chemoselective hydrogenation of nitro compounds with supported gold catalysts. Science 2006, 313, 332-334.

Crossref Google Scholar
10

Grirrane, A.; Corma, A.; Garcia, H. Gold-catalyzed synthesis of aromatic azo compounds from anilines and nitroaromatics. Science 2008, 322, 1661-1664.

Crossref Google Scholar
11

Turner, M.; Golovko, V. B.; Vaughan, O. P. H.; Abdulkin, P.; Berenguer-Murcia, A.; Tikhov, M. S.; Johnson, B. F. G.; Lambert, R. M. Selective oxidation with dioxygen by gold nanoparticle catalysts derived from 55-atom clusters. Nature 2008, 454, 981-983.

Crossref Google Scholar
12

Haruta, M.; Kobayashi, T.; Sano, H.; Yamada, N. Novel gold catalysts for the oxidation of carbon monoxide at a temperature far below 0 ℃. Chem. Lett. 1987, 16, 405-408.

Crossref Google Scholar
13

Haruta, M.; Yamada, N.; Kobayashi, T.; Iijima, S. Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide. J. Catal. 1989, 115, 301-309.

Crossref Google Scholar
14

Haruta, M. Size- and support-dependency in the catalysis of gold. Catal. Today 1997, 36, 153-166.

Crossref Google Scholar
15

Ma, Z.; Overbury, S. H.; Dai, S. Au/MxOy/TiO2 catalysts for CO oxidation: Promotional effect of main-group, transition, and rare-earth metal oxide additives. J. Mol. Catal. A-Chem. 2007, 273, 186-197.

Crossref Google Scholar
16

Comotti, M.; Li, W. C.; Spliethoff, B.; Schuth, F. Support effect in high activity gold catalysts for CO oxidation. J. Am. Chem. Soc. 2006, 128, 917-924.

Crossref Google Scholar
17

Iizuka, Y.; Tode, T.; Takao, T.; Yatsu, K.; Takeuchi, T.; Tsubota, S.; Haruta, M. A kinetic and adsorption study of CO oxidation over unsupported fine gold powder and over gold supported on titanium dioxide. J. Catal. 1999, 187, 50-58.

Crossref Google Scholar
18

Schwartz, V.; Mullins, D. R.; Yan, W. F.; Chen, B.; Dai, S.; Overbury, S. H. XAS study of Au supported on TiO2: Influence of oxidation state and particle size on catalytic activity. J. Phys. Chem. B 2004, 108, 15782-15790.

Crossref Google Scholar
19

Beck, A.; Horvath, A.; Stefler, G.; Scurrell, M. S.; Guczi, L. Role of preparation techniques in the activity of Au/TiO2 nanostructures stabilised on SiO2: CO and preferential CO oxidation. Top. Catal. 2009, 52, 912-919.

Crossref Google Scholar
20

Soares, J. M. C.; Bowker, M. Low temperature CO oxidation on supported and unsupported gold compounds. Appl. Catal. A-Gen. 2005, 291, 136-144.

Crossref Google Scholar
21

Grunwaldt, J. D.; Kiener, C.; Wogerbauer, C.; Baiker, A. Preparation of supported gold catalysts for low-temperature CO oxidation via "size-controlled" gold colloids. J. Catal. 1999, 181, 223-232.

Crossref Google Scholar
22

Chou, J.; McFarland, E. W. Direct propylene epoxidation on chemically reduced Au nanoparticles supported on titania. Chem. Commun. 2004, 1648-1649.

Crossref Google Scholar
23

Zheng, N.; Stucky, G. D. A general synthetic strategy for oxide-supported metal nanoparticle catalysts. J. Am. Chem. Soc. 2006, 128, 14278-14280.

Crossref Google Scholar
24

Yin, H. F.; Wang, C.; Zhu, H. G.; Overbury, S. H.; Sun, S. H.; Dai, S. Colloidal deposition synthesis of supported gold nanocatalysts based on Au-Fe3O4 dumbbell nanoparticles. Chem. Commun. 2008, 4357-4359.

Crossref Google Scholar
25

Peng, S.; Lee, Y.; Wang, C.; Yin, H.; Dai, S.; Sun, S. A facile synthesis of monodisperse Au nanoparticles and their catalysis of CO oxidation. Nano Res. 2008, 1, 229-234.

Crossref Google Scholar
26

Zheng, N.; Fan, J.; Stucky, G. D. One-step one-phase synthesis of monodisperse noble-metallic nanoparticles and their colloidal crystals. J. Am. Chem. Soc. 2006, 128, 6550-6551.

Crossref Google Scholar
27

Shi, W.; Zeng, H.; Sahoo, Y.; Ohulchanskyy, T. Y.; Ding, Y.; Wang, Z. L.; Swihart, M.; Prasad, P. N. A general approach to binary and ternary hybrid nanocrystals. Nano Lett. 2006, 6, 875-881.

Crossref Google Scholar
28

Yu, H.; Chen, M.; Rice, P. M.; Wang, S. X.; White, R. L.; Sun, S. Dumbbell-like bifunctional Au-Fe3O4 nanoparticles. Nano Lett. 2005, 5, 379-382.

Crossref Google Scholar
29

Chen, M. S.; Goodman, D. W. Catalytically active gold: From nanoparticles to ultrathin films. Acc. Chem. Res. 2006, 39, 739-746.

Crossref Google Scholar
Nano Research
Volume 2 Issue 12,
December 2009
Pages 975-983
DOI: 10.1007/s12274-009-9102-z
Cite this article:
Wu B, Zhang H, Chen C, et al. Interfacial Activation of Catalytically Inert Au (6.7 nm)-Fe3O4 Dumbbell Nanoparticles for CO Oxidation. Nano Research, 2009, 2(12): 975-983. https://doi.org/10.1007/s12274-009-9102-z
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