Abstract
Well-dispersed Au/Bi nanoparticles with average size below 10 nm were prepared by using NaBH4 to reduce HAuCl4 with glucose as dispersant. The obtained Au/Bi NPs were well characterized by UV-Vis spectra, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and electrochemical measurements. The electrochemical study found that Bi adlayers on the surface of Au nanoparticles owns two kinds of surface structures, including a low coverage (2 × 2)-Bi adlayer and a close-packed (p × √3)-2 Bi adlayer due to the strong interaction between the two Bi layers and the below Au atoms, which is same with that bulk on Au surface.
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Miao, Y., Ouyang, L., Zhou, S., Xu, L., Yang, Z., **ao, M., and Ouyang, R., Biosens. Bioelectron., 2014, vol. 53, p. 428.
Du, Y., Luo, X.-L., Xu, J.-J., and Chen, H.-Y., Bioelectrochemistry, 2007, vol. 70, p. 342.
German, N., Ramanavicius, A., Voronovic, J., and Ramanaviciene, A., Colloids Surf. A, 2012, vol. 413, p. 224.
Li, Y., Song, Y.-Y., Yang, C., and **a, X.-H., Electrochem. Commun., 2007, vol. 9, p. 981.
Zheng, B., **e, S., Qian, L., Yuan, H., **ao, D., and Choi, M.M.F., Sens. Actuators B, 2011, vol. 152, p. 49.
Andreescu, S. and Luck, L.A., Anal. Biochem., 2008, vol. 375, p. 282.
Wu, J., Miao, Y., Liang, X., Yang, Z., Yang, Y., and Ouyang, R., Electroanalysis, 2014, vol. 26, p. 856.
Adamovski, M., Zając, A., Gründler, P., and Flechsig, G.-U., Electrochem. Commun., 2006, vol. 8, p. 932.
Hofmann, P., Prog. Surf. Sci., 2006, vol. 81, p. 191.
Sáez, A., Expósito, E., Solla-Gullón, J., Montiel, V., and Aldaz, A., Electrochim. Acta, 2012, vol. 63, p. 105.
Sandnes, E., Williams, M.E., Bertocci, U., Vaudin, M.D., and Stafford, G.R., Electrochim. Acta, 2007, vol. 52, p. 6221.
Wu, G.-B., Herrmann, F., and Hang, Z.-Z., J. Univ. Shanghai: Sci. Technol., 2014, vol. 36, p. 34.
Miao, Y., Yang, Z., Liu, X., Xu, L., Ouyang, L., Gu, Y., Chang, H., and Ouyang, R., Electrochim. Acta, 2013, vol. 111, p. 621.
Yang, Z., Miao, Y., Wang, T., **ao, M., Liang, X., Yang, Y., and Li, W., Surf. Rev. Lett., 2014, vol. 21, p. 1450042.
Bai, Y., Yang, W., Sun, Y., and Sun, C., Sens. Actuators, 2008, vol. 134, p. 471.
Solomun, T. and Kautek, W., Electrochim. Acta, 2001, vol. 47, p. 679.
Thiel, K.O., Hintze, M., Vollmer, A., and Donner, C., J. Electroanal. Chem., 2010, vol. 638, p. 143.
Wang, Z., Jiang, C., Huang, R., Peng, H., and Tang, X., J. Phys. Chem. C, 2014, vol. 118, p. 1155.
Wang, Y., Hong, B.H., and Kim, K.S., J. Phys. Chem. B, 2005, vol. 109, p. 7067.
Gutiérrez, M. and Henglein, A., J. Phys. Chem., 1996, vol. 100, p. 7656.
Balan, L., Schneider, R., Billaud, D., Fort, Y., and Ghanbaja, J., Nanotechnology, 2004, vol. 15, p. 940.
Bai, Y., Sens. Actuators, 2008, vol. 134, p. 471.
Tamura, K., Ocko, B., Wang, J., and Adzic, R., J. Phys. Chem. B, 2002, vol. 106, p. 3896.
Jones, S.E.W., Zheng, S.H., Jeffrey, C.A., Seretis, S., Morin, S., and Compton, R.G., J. Electroanal. Chem., 2008, vol. 616, p. 38.
Ouyang, L., Miao, Y., Xu, L., **ao, M., Liang, X., Li, W., and Yang, Y., Electrocatalysis, 2015, vol. 6, p. 211.