Morphology-dependent activity of silver nanostructures towards the electro-oxidation of formaldehyde

被引:45
作者
Geng, Jiangli [1 ,2 ]
Bi, Yingpu [1 ,2 ]
Lu, Gongxuan [1 ]
机构
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Coll, Beijing 100039, Peoples R China
关键词
Silver nanorod; Morphology; Electro-oxidation; Formaldehyde; FORMIC-ACID; FUEL-CELLS; ALKALINE-SOLUTION; NANOPARTICLES; OXIDATION; METHANOL; CATALYSTS; SHAPE; REDUCTION; NANOWIRES;
D O I
10.1016/j.elecom.2009.04.014
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Morphological controlled silver nanoproducts have been prepared using the polyol process through varying the concentration of Na2S. The relationship between the shape of Ag nanocatalyst and the activity for electro-oxidation of formaldehyde has also been investigated. The Ag nanoproducts were found to be efficient electrocatalysts for anodic oxidation of formaldehyde in alkaline solutions. Activity and selectivity were strongly dependent on the morphology of the silver nanoproducts. It was found that silver nanorods were more active than nanowires, nanopolyhedra and nanospheres. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:1255 / 1258
页数:4
相关论文
共 21 条
[1]   Morphology-controlled preparation of silver nanocrystals and their application in catalysis [J].
Bi, Yingpu ;
Lu, Gongxuan .
CHEMISTRY LETTERS, 2008, 37 (05) :514-515
[2]   Application of time-resolved EQCM to the study of the mechanism of silver(I) oxide formation on a polycrystalline silver electrode in alkaline solution [J].
Chen, SL ;
Wu, BL ;
Cha, CS .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 416 (1-2) :53-59
[3]   Different morphologies of silver nanoparticles as catalysts for the selective oxidation of styrene in the gas phase [J].
Chimentao, RJ ;
Kirm, I ;
Medina, F ;
Rodríguez, X ;
Cesteros, Y ;
Salagre, P ;
Sueiras, JE .
CHEMICAL COMMUNICATIONS, 2004, (07) :846-847
[4]   Electrocrystallized Ag nanoparticle on functional multi-walled carbon nanotube surfaces for hydrazine oxidation [J].
Gao, Guoyu ;
Guo, Daojun ;
Wang, Ce ;
Li, Hulin .
ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (07) :1582-1586
[5]   Highly dispersed Ag nanoparticles on functional MWNT surfaces for methanol oxidation in alkaline solution [J].
Guo, DJ ;
Li, HL .
CARBON, 2005, 43 (06) :1259-1264
[6]   Performance characterization of Pd/C nanocatalyst for direct formic acid fuel cells [J].
Ha, S ;
Larsen, R ;
Masel, RI .
JOURNAL OF POWER SOURCES, 2005, 144 (01) :28-34
[7]   Nanoparticles can open a new world of heterogeneous catalysis [J].
Haruta, M .
JOURNAL OF NANOPARTICLE RESEARCH, 2003, 5 (1-2) :3-4
[8]  
JOVANOVIC V, 1986, J SERB CHEM SOC, V51, P611
[9]   The optical properties of metal nanoparticles: The influence of size, shape, and dielectric environment [J].
Kelly, KL ;
Coronado, E ;
Zhao, LL ;
Schatz, GC .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (03) :668-677
[10]   Electrocatalytic oxidation of formic acid and methanol on Pt deposits on Au(111) [J].
Kim, Jandee ;
Jung, Changhoon ;
Rhee, Choong K. ;
Lim, Tae-Hoon .
LANGMUIR, 2007, 23 (21) :10831-10836