2018
DOI: 10.1557/adv.2018.170
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Enhancing the photocatalytic degradation of selected chlorophenols using Ag/zno nanocomposites

Abstract: Chlorophenols are among the priority listed water contaminants due to their estrogenic, mutagenic or carcinogenic health effects. The Ag/ZnO nanocomposites (NCs) were synthesized, characterized and tested for photacatalytic degradation of chlorophenols in water. The synthesis was done using zinc nitrate hexahydrate (ZnNO3. 6H2O) precursor and sodium hydroxide (NaOH). Silver nitrate (AgNO3) was added to ZnO and reduced with sodium brohydride to produce the silver nanoparticles (NPs) within the ZnO structure. Th… Show more

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Cited by 12 publications
(6 citation statements)
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“…This value is slightly higher than the 3.33 eV bandgap reported by Kotlhao et al [59]. The inconsistency can be attributed to the UV activity of the nanocomposites synthesised in this study, while those obtained by Kadam et al [58] and Kotlhao et al [59] were active in the visible region.…”
Section: Optical Propertiescontrasting
confidence: 79%
See 1 more Smart Citation
“…This value is slightly higher than the 3.33 eV bandgap reported by Kotlhao et al [59]. The inconsistency can be attributed to the UV activity of the nanocomposites synthesised in this study, while those obtained by Kadam et al [58] and Kotlhao et al [59] were active in the visible region.…”
Section: Optical Propertiescontrasting
confidence: 79%
“…In the spectrum, the 20/80 ZnO-CSs nanocomposites exhibit absorption bands at approximately 301 nm and 287 nm, attributed to ZnO and CSs, respectively. The 1% Ag-ZnO-CSs display absorption bands at 298 nm and 286 nm, corresponding to the absorption peaks of Ag and ZnO-CSs, respectively [58][59][60]. The presence of Ag induces a blue-shift in the absorbance spectrum, with the maximum absorbance peak for Ag-ZnO-CSs at 298 nm instead of ~301 nm.…”
Section: Optical Propertiesmentioning
confidence: 99%
“…2.b) had strong absorption peaks at 3309 cm -1, indicating O-H stretching vibrations [36] and 1620 cm -1 denoting the C=O stretching vibration [37]. The band at 2347 cm -1 indicates alkanes [38] and the peaks at 738 cm -1 and 619 cm -1 infer Zn-O stretching [39][40][41]. Spectra of ZO (Fig.…”
Section: Fourier Transform Infrared (Ftir) Spectroscopic Analysismentioning
confidence: 96%
“…This is explained by the zinc oxide being photoexcited from the lower valence band to the higher conduction band. Additionally, the reaction between the noble metal and semiconductor is assumed to be responsible for the shifting of absorbance peaks to higher wavelengths [44,45]. Using data from UV-vis spectroscopy, the band gap energy (E g ) is computed (Figure 6b).…”
Section: Physicochemical Characterization Of the Nanostructure Materialsmentioning
confidence: 99%