Morphogenesis of Highly Uniform CoCO3 Submicrometer Crystals and Their Conversion to Mesoporous Co3O4 for Gas-Sensing Applications

被引:201
作者
Li, Cheng Chao [1 ,2 ,3 ,4 ]
Yin, Xiao Ming [3 ,4 ]
Wang, Tai Hong [3 ,4 ]
Zeng, Hua Chun [1 ,2 ]
机构
[1] Natl Univ Singapore, Dept Chem & Biomol Engn, KAUST NUS GCR Program, Fac Engn, Singapore 119260, Singapore
[2] Natl Univ Singapore, Fac Engn, Minerals Met & Mat Technol Ctr, Singapore 119260, Singapore
[3] Hunan Univ, Key Lab Micronano Optoelect Devices, Minist Educ, Changsha 410082, Hunan, Peoples R China
[4] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
关键词
HYDROTHERMAL SYNTHESIS; ORIENTED ATTACHMENT; CONTROLLED GROWTH; PRECURSOR ROUTE; HOLLOW SPHERES; SNO2; NANOWIRES; SURFACE-AREA; OXIDE; NANOSTRUCTURES; CARBONATE;
D O I
10.1021/cm902126w
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Transition metal nitrates, carbonates, hydroxides, hydroxyoxides, and so forth are often used as solid precursors to synthesize their respective nanostructured metal-oxides after chemical/thermal conversion. However, synthesis of submicrometer uniform crystalline particles of this class of compound intermediates remains as a challenging but less studied area in nanomaterials research. In this work, we report a polyol process for controlled growth of cobalt carbonate (CoCO3). A preparative investigation on morphogenesis of C crystals has been carried out, and three types of highly uniform CoCO3 products (i.e., peanut-like, capsule-like, and rhombus crystals) in the submicrometer region have been synthesized at 200 degrees C under batch conditions. Uniform particles of tricobalt tetroxide (Co3O4) have also been obtained at 300 degrees C from the CoCO3 submicrorneter crystals after thermal transformation in laboratory air. The Co3O4 powder products possess mesoporosity and essentially preserve the pristine morphologies of their respective solid precursors. Due to high crystal uniformity and specific surface areas in the range of 140-149 m(2)/g, the mesoporous Co3O4 exhibits enhanced performances for ethanol and carbon monoxide sensing.
引用
收藏
页码:4984 / 4992
页数:9
相关论文
共 70 条
[1]   Synthesis, characterization, and li-electrochemical performance of highly porous Co3O4 powders [J].
Binotto, G. ;
Larcher, D. ;
Prakash, A. S. ;
Urbina, R. Herrera ;
Hegde, M. S. ;
Tarascon, J-M. .
CHEMISTRY OF MATERIALS, 2007, 19 (12) :3032-3040
[2]   ORIENTATIONAL ORDER IN RANDOM PACKINGS OF ELLIPSES [J].
BUCHALTER, BJ ;
BRADLEY, RM .
PHYSICAL REVIEW A, 1992, 46 (06) :3046-3056
[3]   Gas sensing properties of nanocrystalline NiO and Co3O4 in porous silica sol-gel films [J].
Cantalini, C ;
Post, M ;
Buso, D ;
Guglielmi, A ;
Martucci, A .
SENSORS AND ACTUATORS B-CHEMICAL, 2005, 108 (1-2) :184-192
[4]   Hierarchically structured cobalt oxide (Co3O4):: The morphology control and its potential in sensors [J].
Cao, An-Min ;
Hu, Jin-Song ;
Liang, Han-Pu ;
Song, Wei-Guo ;
Wan, Li-Jun ;
He, Xiu-Li ;
Gao, Xiao-Guang ;
Xia, Shan-Hong .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (32) :15858-15863
[5]   Catalytic behavior of Co3O4 in electroreduction of H2O2 [J].
Cao, Dianxue ;
Chao, Jundang ;
Sun, Limei ;
Wang, Guiling .
JOURNAL OF POWER SOURCES, 2008, 179 (01) :87-91
[6]   Controlled synthesis of self-assembled metal oxide hollow spheres via tuning redox potentials: Versatile nanostructured cobalt oxides [J].
Chen, Chun-Hu ;
Abbas, Shams F. ;
Morey, Aimee ;
Sithambaram, Shanthakumar ;
Xu, Lin-Ping ;
Garces, Hector F. ;
Hines, William A. ;
Suib, Steven L. .
ADVANCED MATERIALS, 2008, 20 (06) :1205-+
[7]   Generating isotropic superparamagnetic interconnectivity for the two-dimensional organization of nanostructured building blocks [J].
Chen, HM ;
Liu, RS ;
Li, HL ;
Zeng, HC .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (17) :2713-2717
[8]   Stable and highly sensitive gas sensors based on semiconducting oxide nanobelts [J].
Comini, E ;
Faglia, G ;
Sberveglieri, G ;
Pan, ZW ;
Wang, ZL .
APPLIED PHYSICS LETTERS, 2002, 81 (10) :1869-1871
[9]   Shape Control of Cobalt Carbonate Particles by a Hydrothermal Process in a Mixed Solvent: An Efficient Precursor to Nanoporous Cobalt Oxide Architectures and Their Sensing Property [J].
Cong, Huai-Ping ;
Yu, Shu-Hong .
CRYSTAL GROWTH & DESIGN, 2009, 9 (01) :210-217
[10]  
David Kingery W., 1976, INTRO CERAMICS, V17