Quantitative determination of raw and functionalized carbon nanotubes for the antibacterial studies


The UV–visible spectrophotometric method has been described the study of raw carbon nanotubes (R-MWCNTs) and functionalized multiwall carbon nanotubes (F-MWCNTs) for the control of bacterial growth by using validated analytical techniques. The absorption spectra of functionalized carbon nanotubes (F-MWCNTs) and raw carbon nanotubes (R-MWCNTs) show maximum absorbance at λ max 600 nm. The linear relationship was found between absorbance and concentration of R-MWCNTs and F-MWCNTs in the range of 0.25–2.0 μg mL−1. The linear regression equation was evaluated by statistical treatment of calibration data and gives the value of correlation coefficient for F-MWCNTs (0.9999) and R-MWCNTs (0.9993), which indicate excellent linearity. The Optical and regression characteristics of the proposed method were found apparent molar absorptivity, limits of detection (LOD), and limit of quantitation (LOQ) for R-MWCNTs and F-MWCNTs (5.75 × 102: 8.25 × 102 L mol−1 cm−1), (0.052: 0.018 μg mL−1), and (0.055: 0.158 μg mL−1), respectively. The validity of the proposed method was checked by precision, accuracy, linearity, limits of detection (LOD), and limit of quantitation (LOQ). The RSD (%) and quantitative recoveries (%) were obtained (0.026–0.0086) and (100.34 and 100.71) for R-MWCNTs: for F-MWCNTs by UV–visible spectrophotometric, respectively.

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This project was supported by King Saud University, Deanship of Scientific Research, College of Sciences Research Center.

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Correspondence to Rizwan Wahab.

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Wahab, R., Khan, F., Rashid, M. et al. Quantitative determination of raw and functionalized carbon nanotubes for the antibacterial studies. J Mater Sci 49, 4288–4296 (2014). https://doi.org/10.1007/s10853-014-8124-4

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  • Carbon Nanotubes
  • Poly Aniline
  • Multiwall Carbon Nanotubes
  • Gaussian Process Regression
  • Functionalized Carbon Nanotubes