caa a22 4500 445303689 CHVBK 20180317142606.0 cr unu---uuuuu 170323e20100401xx s 000 0 eng 10.1007/s12274-010-1027-z doi (NATIONALLICENCE)springer-10.1007/s12274-010-1027-z Large scale photochemical synthesis of MTiO2 nanocomposites (M [Elektronische Daten] Ag, Pd, Au, Pt) and their optical properties, CO oxidation performance, and antibacterial effect [Shao Chen, Jian Li, Kun Qian, Wei Xu, Yang Lu, Wei Huang, Shu Yu] Well-dispersed M@TiO2 (M = Ag, Pd, Au, Pt) nanocomposite particles with a diameter of 200-400 nm can be synthesized on a large scale by a clean photochemical route which does not require any additives using spherical rutile nanoparticles as a support. The sizes of Pt, Au, and Pd nanoparticles formed on the surface of TiO2 particles are about 1 nm, 5 nm, and 5 nm, respectively, and the diameter of Ag nanoparticles is in the range 2-20 nm. Moreover, the noble metal nanoparticles have good dispersity on the particles of the TiO2 support, resulting in excellent catalytic activities. Complete conversion in catalytic CO oxidation is reached at temperatures as low as 333 and 363 K, respectively, for Pt@TiO2 and Pd@TiO2 catalysts. In addition, the antibacterial effects of the as-synthesized TiO2 nanoparticles, silver nanoparticles, and Au@TiO2 and Ag@TiO2 nanocomposites have been tested against Gram-negative Escherichia coli (E. coli) bacteria. The results demonstrate that the presence of the TiO2 matrix enhances the antibacterial effect of silver nanoparticles, and the growth of E. coli can be completely inhibited even if the concentration of Ag in Ag@TiO2 nanocomposite is very low (10 μg/mL). Tsinghua University Press and Springer-Verlag Berlin Heidelberg, 2010 Nanocomposite nationallicence noble metals nationallicence CO oxidation nationallicence antibacterial nationallicence Chen Shao Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut Li Jian School of Pharmacy, Anhui University of Traditional Chinese Medicine, 230026, Hefei, China aut Qian Kun Division of Chemical Physics, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut Xu Wei Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut Lu Yang Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut Huang Wei Division of Chemical Physics, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut Yu Shu Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut Nano Research Tsinghua Press 3/4(2010-04-01), 244-255 1998-0124 3:4<244 2010 3 12274 https://doi.org/10.1007/s12274-010-1027-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12274-010-1027-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Shao Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut NATIONALLICENCE 700 1- Li Jian School of Pharmacy, Anhui University of Traditional Chinese Medicine, 230026, Hefei, China aut NATIONALLICENCE 700 1- Qian Kun Division of Chemical Physics, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut NATIONALLICENCE 700 1- Xu Wei Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut NATIONALLICENCE 700 1- Lu Yang Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut NATIONALLICENCE 700 1- Huang Wei Division of Chemical Physics, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut NATIONALLICENCE 700 1- Yu Shu Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, 230026, Hefei, China aut NATIONALLICENCE 773 0- Nano Research Tsinghua Press 3/4(2010-04-01), 244-255 1998-0124 3:4<244 2010 3 12274 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer