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In this study, the catalytic activities of Raw CNTs and Co/CNTs for CO removal were determined between 100 and 300°C. To confirm the characterization of Raw CNTs and Co/CNTs, the composition and morphology of two catalysts were analyzed by using XRD, SEM, TEM and Raman spectra. The results showed that the CO conversion was 98% by using Raw CNTs at 250°C and this conversion was similar to that of using...
Multi-wall carbon nanotubes (MWNTs) had been synthesized by catalytic chemical vapor deposition of acetylene over Fe loaded mesoporous silica. The as-grown MWNTs were purified by a two-step purification procedure involving acid washing and oxidation in diluted air, and characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermo...
Electrochemical detection is a promising technique for bio-analytes sensing because of rapid analysis, good selectivity, reusability, thermal stability, linearity and relatively low cost. There have been consistent efforts to improve the performance of the electrochemical biosensors which include functionalization of the working electrode surface by polymer or nanomaterials. In this work, a cholesterol...
Multi-wall carbon nanotubes (MWNTs) have been synthesized by catalytic chemical vapor deposition of acetylene over Fe loaded mesoporous silica. The raw product contains the aerogel support, catalyst particles, and a small amount of amorphous carbon (mostly as a coating on the catalyst nanoparticles) as impurities. Before these materials can be used in many applications, these impurities must be removed...
We have developed a fast and straightforward technique to fabricate suspended carbon nanotube field effect transistors (CNT FETs) using pristine as-grown carbon nanotubes (unexposed to photoresist or solvents). CNT thin films were first grown on a 500 nm thick thermally oxidised Si substrate by chemical vapor deposition (CVD) using ferritin encapsulated iron nanoparticles as the catalyst.The technique...
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