Drastic increase in catalyst productivity of nanoclay-supported CVD-grown carbon nanotubes by organo-modification
Source abstract
Abstract
Abstract The organo-modification of montmorillonite (Mt) prior to catalyst insertion was proposed as a promising approach to increase carbon nanotube (CNT) yield on nanoclay (NC) supports in catalytic chemical deposition (CVD) reaction. The behavior of organo-modified montmorillonite (OMt) as the support in CVD reaction was compared with that of Mt. According to morphological images and Raman spectra, the carbon atoms form CNT in case of both Fe-loaded pristine Mt and OMt. Decreasing gas flow-rate and diminishing hydrogen fraction in growth atmosphere were found to favor improvement of CNT yield, whereas generally tended to deteriorate its quality. TGA results showed that the CNT content of OMt-supported hybrids were drastically increased compared to that of non-modified Mt. There was about two- to fifteen-fold increase in CNT yield depending on the CVD conditions. This observation was found correlated to the larger specific surface area (SSA) and d001-value of Fe-loaded OC. The evident advantages of OMt as catalyst support include efficient and scalable synthesis of high thermally stable NC/CNT hybrid at low cost.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Supercapacitor Materials and Fabrication · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. A new approach for one step synthesis of magnetic carbon nanotubes/diatomite earth composite by chemical vapor deposition method: application for removal of lead ions10.1016/j.cej.2014.05.021 ↗
2. Carbon nanotube growth on a swellable clay matrix10.1021/cm0482131 ↗
3. Chemically functionalized carbon nanotubes10.1002/smll.200400118 ↗
4. Carbon nanotubes–the route toward applications10.1126/science.1060928 ↗
5. Synthesis of nanocomposites based on nanotubes and silicates10.1016/j.apsusc.2011.10.089 ↗
6. BYK Clay Products
7. General equation for the determination of the crystallite size La of nanographite by Raman spectroscopy10.1063/1.2196057 ↗
8. Large scale CVD synthesis of single-walled carbon nanotubes10.1021/jp990957s ↗
9. Combinatorial optimization of heterogeneous catalysts used in the growth of carbon nanotubes10.1021/la001273a ↗
10. From layer compounds to catalytic materials10.1016/S0920-5861(98)00437-4 ↗
11. Carbon nanotubes synthesized by Ni-assisted atmospheric pressure thermal chemical vapor deposition10.1063/1.1448877 ↗
12. Synthesis and characterization of carbon nanotubes grown on montmorillonite clay catalysts10.1007/s10853-007-1808-2 ↗
13. Carbon nanotube growth mechanism switches from tip- to base-growth with decreasing catalyst particle size10.1016/j.carbon.2008.05.016 ↗
14. Catalytic synthesis of carbon nanotubes on clay minerals10.1016/S0008-6223(02)00165-3 ↗
15. Synthesis and characterization of carbon nanotubes on clay minerals and its application to a hydrogen peroxide biosensor10.1016/j.msec.2008.05.011 ↗
16. Simultaneous reinforcement and toughening of polyurethane composites with carbon nanotube/halloysite nanotube hybrids10.1016/j.compscitech.2013.11.025 ↗
17. The growth of carbon nanotubes on montmorillonite and zeolite (clinoptilolite)10.1016/j.apsusc.2008.02.005 ↗
18. Carbon nanotube: properties and applications
19. Polybutadiene rubber/organoclay nanocomposites: effect of organoclay with various modifier concentrations on the vulcanization behavior and mechanical properties10.1002/pen.20709 ↗
20. Thermodynamics of chromium (VI) anionic species sorption onto surfactant-modified montmorillonite clay10.1006/jcis.2000.7015 ↗
21. Synthesis of exfoliated CNT–metal–clay nanocomposite by chemical vapor deposition10.1016/j.seppur.2009.03.038 ↗
22. Clay assisted dispersion of carbon nanotubes in conductive epoxy nanocomposites10.1002/adfm.200600785 ↗
23. Novel nanocomposite of carbon nanotube–nanoclay by direct growth of nanotubes on nanoclay surface10.1007/s10853-005-2881-z ↗
24. Synthesis of clay–carbon nanotube hybrids: growth of carbon nanotubes in different types of iron modified montmorillonite10.1016/j.compscitech.2011.11.027 ↗
25. Carbon nanotubes rooted montmorillonite (CNT-MM) reinforced nanocomposite membrane for PEM fuel cells10.1016/j.mseb.2012.02.027 ↗
26. Fabrication of nanostructured clay–carbon nanotube hybrid nanofiller by chemical vapour deposition10.1016/j.apsusc.2012.01.006 ↗
27. Applications of TGA in quality control of SWCNTs10.1007/s00216-009-3319-2 ↗
28. Multi-walled carbon nanotubes production by ethane decomposition over silica-supported iron-catalysts10.1002/pssa.200723647 ↗
29. K10 montmorillonite based catalysts for the growth of multiwalled carbon nanotubes through catalytic chemical vapor deposition10.1021/ie9018275 ↗
30. The growth of multi-walled carbon nanotubes on natural clay minerals (kaolinite, montronite and sepiolite)10.1016/j.apsusc.2011.10.114 ↗
31. Polymer/clay and polymer/carbon nanotube hybrid organic–inorganic multilayered composites made by sequential layering of nanometer scale films10.1016/j.ccr.2009.09.004 ↗
32. Processing and characterization of polypropylene filled with multiwalled carbon nanotube and clay hybrid nanocomposites10.1080/1023666X.2014.902715 ↗
33. Carbon nanostructures-modified expanded vermiculites produced by chemical vapor deposition from ethanol10.1016/j.clay.2011.06.012 ↗
34. A scalable CVD synthesis of high-purity single-walled carbon nanotubes with porous MgO as support material10.1039/b109763f ↗
35. ‘Expanded organoclay’ assisted dispersion and simultaneous structural alterations of multiwall carbon nanotube (MWCNT) clusters in natural rubber10.1016/j.compscitech.2014.11.018 ↗
36. Sorption of aqueous organic contaminants onto dodecyl sulfate intercalated magnesium iron layered double hydroxide10.1016/j.clay.2013.01.001 ↗
37. Preparation of nanotubes-clay hybrid systems by iron-catalyzed isobutane decomposition10.1016/j.diamond.2009.10.001 ↗
38. Polylactide and carbon nanotubes/smectite-clay nanocomposites: preparation, characterization, sorptive and electrical properties10.1016/j.clay.2010.12.013 ↗
39. On the CVD growth of C nanotubes over Fe-loaded montmorillonite catalysts10.5772/50958 ↗
40. Production of controlled architectures of aligned carbon nanotubes by an injection chemical vapour deposition method10.1016/S0008-6223(02)00314-7 ↗
41. A study of low temperature sintered Mg–Mn nano-ferrites10.1142/S0217979209049528 ↗
42. Synthesis of high quality multi-walled carbon nanotubes from the decomposition of acetylene on iron-group metal catalysts supported on MgO10.1016/S0008-6223(02)00086-6 ↗
43. Characterization of montmorillonite surfaces after modification by organosilane10.1346/CCMN.2001.0490202 ↗
44. Photocatalytic CO2 reduction by CH4 over montmorillonite modified TiO2 nanocomposites in a continuous monolith photoreactor10.1016/j.materresbull.2014.11.042 ↗
45. Evaluation of first-row transition metal oxides supported on clay minerals for catalytic growth of carbon nanostructures10.1016/j.mseb.2008.06.029 ↗
46. Fabrication and mechanical properties of exfoliated clay–CNTs/epoxy nanocomposites10.1016/j.msea.2008.01.040 ↗
47. Thermal degradation chemistry of alkyl quaternary ammonium montmorillonite10.1021/cm010305s ↗
48. Catalytic chemical vapour deposition of carbon nanotubes using Fe-doped alumina catalysts10.1016/j.cattod.2009.06.019 ↗
49. Growth of carbon nanotubes on clay: unique nanostructured filler for high-performance polymer nanocomposites10.1002/adma.200501217 ↗
50. Energy-absorbing hybrid composites based on alternate carbon-nanotube and inorganic layers10.1002/adma.200900123 ↗
51. Dramatically enhanced mechanical performance of nylon-6 magnetic composites with nanostructured hybrid one-dimensional carbon nanotube-two-dimensional clay nanoplatelet heterostructures10.1021/jp112284k ↗
52. Fabrication and properties of clay-supported carbon nanotube/poly (vinyl alcohol) nanocomposites10.1002/pc.20698 ↗
53. Improvement of oil adsorption performance by a sponge-like natural vermiculite-carbon nanotube hybrid10.1016/j.clay.2011.04.003 ↗
54. Improved thermal conductivity of epoxy composites using a hybrid multi-walled carbon nanotube/micro-SiC filler10.1016/j.carbon.2009.11.040 ↗
55. Reinforcing epoxy polymer composites through covalent integration of functionalized nanotubes10.1002/adfm.200305162 ↗