Sunlight-Induced Photochemical Degradation of Methylene Blue by Water-Soluble Carbon Nanorods

Abstract

Water-soluble graphitic hollow carbon nanorods (wsCNRs) are exploited for their light-driven photochemical activities under outdoor sunlight. wsCNRs were synthesized by a simple pyrolysis method from castor seed oil, without using any metal catalyst or template. wsCNRs exhibited the light-induced photochemical degradation of methylene blue used as a model pollutant by the generation of singlet oxygen species. Herein, we described a possible degradation mechanism of methylene blue under the irradiation of visible photons via the singlet oxygen-superoxide anion pathway.

Assessment of photocatalytic potentiality and determination of ecotoxicity (using plant model for better environmental applicability) of synthesized copper, copper oxide and copper-doped zinc oxide nanoparticles

“…Generation of reactive oxygen species during dye degradation by best performing Cu-doped ZnO-NPs is confirmed by nitroblue tetrazolium (NBT) test as per Bhati et al [ 56 ]. For the purpose, 200 μL NBT along with carbon tetra chloride (CCl 4 ) are added to the NPs suspensions.…”

Water Soluble Fluorescent Carbon Nanodots from Biosource for Cells Imaging

“…Aqueous solubility of synthesized CNDs was achieved by further oxidation with nitric acid as demonstrated in Figure 1 following earlier reports by Sonkar and coworkers [28]. Typically, 2 g of CNDs was refluxed in concentrated nitric acid (100 mL) for 10 h followed by centrifugation of the resulting solution for acid removal and then evaporation on a water bath until a slurry was formed and pH = 7 reached.…”

Surface-passivated, soluble and non-toxic graphene nano-sheets for the selective sensing of toxic Cr(vi) and Hg(ii) metal ions and as a blue fluorescent ink

“…2(a)shows the comparison of the FTIR spectra of BPA (black line), o-GNS (red line) and f-GNS (blue line). A comparable broad peak was observed at $3460 cm À1 in the f-GNS spectrum, corresponding to the merging of the -OH/-NH bonds29,30 present in BPA and o-GNS. The increased intensity of the C-H stretching band at $2860 cm À1 for f-GNS clearly indicated the bonding of the BPA molecules with o-GNS.…”