Photocatalytic synthesis of copper colloids from Cu(II) by the ferrihydrite core of ferritin

被引:77
作者
Ensign, D
Young, M
Douglas, T [1 ]
机构
[1] Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA
[2] Montana State Univ, Dept Plant Sci, Bozeman, MT 59717 USA
[3] Montana State Univ, Ctr Bioinspired Nanomat, Bozeman, MT 59717 USA
关键词
D O I
10.1021/ic035415a
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The iron-storage protein ferritin encapsulates a nanoparticle of iron oxide. The size and properties of these nanoparticles can be adjusted by controlled oxidative hydrolysis reactions of Fe(II). This mineralized ferritin protein cage has previously been shown to act as an effective photocatalyst for reduction of Cr(VI). In the present work, we demonstrate that Fe(O)OH-mineralized ferritin catalyzes the photoreduction of Cu(II) to form a stable, air-sensitive, colloidal dispersion of Cu(O). In addition, the particle sizes of the Cu colloids can be controlled by varying the ratio of Cu(II) to ferritin. This illustrates an important principle, namely that the properties of one preformed material can be utilized for the specific synthesis of a second material, thus tailoring the desired physical properties of the final products. This procedure represents a multistep materials synthesis: the formation of a new nanomaterial from a catalytic precursor.
引用
收藏
页码:3441 / 3446
页数:6
相关论文
共 45 条
  • [1] Constrained synthesis of cobalt oxide nanomaterials in the 12-subunit protein cage from Listeria innocua
    Allen, M
    Willits, D
    Young, M
    Douglas, T
    [J]. INORGANIC CHEMISTRY, 2003, 42 (20) : 6300 - 6305
  • [2] Allen M, 2002, ADV MATER, V14, P1562, DOI 10.1002/1521-4095(20021104)14:21<1562::AID-ADMA1562>3.0.CO
  • [3] 2-D
  • [4] A novel non-heme iron-binding ferritin related to the DNA-binding proteins of the Dps family in Listeria innocua
    Bozzi, M
    Mignogna, G
    Stefanini, S
    Barra, D
    Longhi, C
    Valenti, P
    Chiancone, E
    [J]. JOURNAL OF BIOLOGICAL CHEMISTRY, 1997, 272 (06) : 3259 - 3265
  • [5] Synthesis of coinage-metal nanoparticles from mesityl precursors
    Bunge, SD
    Boyle, TJ
    Headley, TJ
    [J]. NANO LETTERS, 2003, 3 (07) : 901 - 905
  • [6] Mineralization in ferritin: An efficient means of iron storage
    Chasteen, ND
    Harrison, PM
    [J]. JOURNAL OF STRUCTURAL BIOLOGY, 1999, 126 (03) : 182 - 194
  • [7] Chusuei CC, 2001, TOP CATAL, V14, P71
  • [8] ULTRAVIOLET VISIBLE ABSORPTION-SPECTRA OF THE COLLOIDAL METALLIC ELEMENTS
    CREIGHTON, JA
    EADON, DG
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (24): : 3881 - 3891
  • [9] Host-guest encapsulation of materials by assembled virus protein cages
    Douglas, T
    Young, M
    [J]. NATURE, 1998, 393 (6681) : 152 - 155
  • [10] Calculated electrostatic gradients in recombinant human H-chain ferritin
    Douglas, T
    Ripoll, DR
    [J]. PROTEIN SCIENCE, 1998, 7 (05) : 1083 - 1091