Effect of Mo in Co-Mo/MgO catalysts on the synthesis yield and structure of carbon nanotubes
スポンサーリンク
概要
- 論文の詳細を見る
Carbon nanotubes (CNTs) were synthesized at 650-770°C using Co/MgO and Co-Mo/MgO as catalysts and ethylene as carbon source. The dependence of the carbon yield on Mo amount in catalyst, synthesis temperature and time were investigated, and the structures of CNTs were characterized using FESEM, TEM, and Raman spectroscopy. It was found that CNTs with "bamboo-like" structure were synthesized using Co-Mo/MgO catalysts, in contrast to typical multi-walled carbon nanotubes with hollow inner tube obtained from Co/MgO catalyst. Addition of 5-10% Mo in catalysts resulted in the highest carbon yield, e.g. 5500% for 60 min synthesis, which is about 20 times higher than that of Co/MgO. The addition of Mo also extended the lifespan of catalyst for the growth of CNTs. TEM observation showed that the growth of CNTs was in a root-growth mode. The structure of CNTs obtained from Co-Mo/MgO catalysts was explained based on the growth mechanism of CNTs.
- 日本セラミックス協会の論文
- 2009-05-01
著者
-
UCHIYAMA Yasuo
Department of Cell Biology and Neuroscience (A1), Osaka University Graduate School of Medicine
-
Zheng Guo-bin
Department Of Materials Science And Engineering Faculty Of Engineering Nagasaki University
-
Uchiyama Yasuo
Department Of Materials Science And Engineering Faculty Of Engineering Nagasaki University
-
BABA Masataka
Graduate School of Science and Technology, Nagasaki University
-
SANO Hideaki
Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University
-
Uchiyama Yasuo
Department Of Anatomy Jichi Medical School
-
Sano Hideaki
Department Of Materials Science And Engineering Faculty Of Engineering Nagasaki Uniersity
-
Sano Hideaki
Department Of Materials Science And Engineering Faculty Of Engineering Nagasaki University
-
Baba Masataka
Graduate School Of Science And Technology Nagasaki University
関連論文
- Specific depletion of GGA2 causes cathepsin D missorting in HeLa cells
- Participation of autophagy in the degeneration process of rat hepatocytes after transplantation following prolonged cold preservation
- IIA-30 Autophagy in cathepsin D-deficient mice expressing GFP-LC3(THE 46TH ANNUAL MEETING OF THE JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY)
- II-C-04 Expression of cathepsin C in normal and injured mouse brains(THE 45TH ANNUAL MEETING OF THE JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY)
- II-C-07 Early-phase redistribution of the cation-independent mannose 6-phosphate receptor by U18666A treatment in HeLa cells
- P-45-B Cathepsin D Deficiency Induces Autophagy in Neurons of Mouse Brain(THE JOINT MEETING OF THE 44TH ANNUAL MEETING OF THE JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY AND THE 35TH ANNUAL MEETING OF THE CLINICAL ELECTRON MICROSCOPY SOCIETY OF JAPA
- P-38-A Predominant expression of the short form of GGA3 in human cell lines and tissues(THE JOINT MEETING OF THE 44TH ANNUAL MEETING OF THE JAPAN SOCIETY OF HISTOCHEMISTRY AND CYTOCHEMISTRY AND THE 35TH ANNUAL MEETING OF THE CLINICAL ELECTRON MICROSCOPY S
- The Expression of Tripeptidyl Peptidase I in Various Tissues of Rats and Mice
- The Induction of Autophagic Vacuoles and the Unique Endocytic Compartments, C-Shaped Multivesicular Bodies, in GH4C1 Cells after Treatment with 17β-Estradiol, Insulin and EGF
- An Ultrastructural and Immunohistochemical Study of PC12 Cells During Apoptosis Induced by Serum Deprivation with Special Reference to Autophagy and Lysosomal Cathepsins
- Immunocytochemical Localization of Chromogranin A and Secretogranin II in Female Rat Gonadotropes
- Immunocytochemical Localization of Angiotensinogen in Rat Hepatocytes
- Immunocytochemical Localization of Lysosomal Cysteine Proteinases in Rat Endocrine Pancreas
- Purification, cDNA cloning, and secretory properties of FLRG protein from PC12 cells and the distribution of FLRG mRNA and protein in rat tissues
- Recovery of Learning and Memory by Gene Therapy Using Hepatocyte Growth Factor Gene After Focal Cerebral Ishcemia in Rats(Gene Therapy/Genetic Engineering (IHD), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- Effect of Mo in Co-Mo/MgO catalysts on the synthesis yield and structure of carbon nanotubes
- Characterization of New Fluorogenic Substrates for the Rapid and Sensitive Assay of Cathepsin E and Cathepsin D^1
- Fine Structural and Morphometric Studies on Gastric Parietal Cells of Peptic Ulcer Patients after Long-Term Treatment with Omeprazole
- Regulation of Reactive Oxygen Species by Nerve Growth Factor but not Bcl-2 as a Novel Mechanism of Protection of PC12 Cells from Superoxide Anion-Induced Death
- Free Radical-Independent Protection by Nerve Growth Factor and Bcl-2 of PC12 Cells from Hydrogen Peroxide-Triggered Apoptosis
- Molecular Weight-Dependent Effects of Hyaluronate on the Arthritic Synovium
- Graphitization behavior of the boron-containing carbon film derived from polyimide
- Preparation of β-sialon from Silica-gel
- Effect of Heat Treatment of Carbon Fibers on Mechanical Properties of Carbon Fiber/SiC Composites
- Human skeletal muscle calcium channel α1S is expressed in the basal ganglia: distinctive expression pattern among L-type Ca^ channels
- PI-14 Development of Circadian Clock Oscillator During the Mouse ES cell Differentiation in vitro
- Rloe of Cathepsin B as Prorenin Processing Enzyme in Human Kidney
- Apoptosis of Epithelial Cells : Cell Differentiation and Death
- The Role of Lysosomal Cathepsins in Active Cell Death
- Localization of Cathepsins D, K, and L in Degenerated Human Intervertebral Discs
- Cytochemical Localization of Hyaluronic Acid in Human Synovium with Special Reference to Its Possible Process of Degradation
- S3-3 Autophagic neuron death : roles of lysosomal proteinases in neuronal cell death
- W5-5 Lysosomal Cathepsins Regulate the Neural Cell Death
- Accumulation of Ceroid Lipofuscin-Containing Lysosomes in CNS Neurons in cathepsin D deficient mice
- Studies of Relationship between the Uptake of Biogenic Amines of Leucocytes and Change of their Adenylate Cyclase Activity
- Dissociation and dispersion of claudin-3 from the tight junction could be one of the most sensitive indicators of reflux esophagitis in a rat model of the disease
- Nitric oxide-mediated injury of interstitial cells of Cajal and intestinal dysmotility under endotoxemia of mice
- Regulation of Reactive Oxygen Species by Nerve Growth Factor but not Bcl-2 as a Novel Mechanism of Protection of PC12 Cells from Superoxide Anion-Induced Death