Facile synthesis of chitosan membranes for visible-light-driven photocatalytic degradation of tetracycline hydrochloride

Liang, Huimin; Lv, Caizhi; Chen, Hanjiao; Wu, Lan; Hou, Xiandeng

doi:10.1039/d0ra08358e

Cited by 18 publications

(8 citation statements)

References 37 publications

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“…Thus, the indirect band gaps energy of ZnO, Chitosan, ZnO/Chitosan and MWCNTs/ZnO/Chitosan were determined to be 2.75, 2.47, 0.97 and 0.8 eV, respectively. The calculated bandgap values of Chitosan and ZnO nanoparticles were comparable with previous studies 47 , 48 , respectively. The results obviously showed that after adding Chitosan to ZnO, the bandgap value reduces gradually and subsequently results to prepare condition for the photocatalytic removal of MB dye under the UV light irradiation.…”

Section: Resultssupporting

confidence: 89%

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Facile fabrication of ternary MWCNTs/ZnO/Chitosan nanocomposite for enhanced photocatalytic degradation of methylene blue and antibacterial activity

Malekkiani

Magham

Ravari

et al. 2022

Sci Rep

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Developing a cheap, stable and effective photocatalyst is necessary for remediation of persistent organic pollutants. To address this challenge, we proposed a unique interfacial engineering technique and proper bandgap matching strategy to synthesize MWCNTs/ZnO/Chitosan ternary nanocomposite for effective photocatalytic application. The features of the prepared samples were determined by FESEM, TEM, EDX, elemental mapping, AFM, FT-IR, XRD, UV–Vis spectroscopy and BET surface analysis. The obtained results showed successful fabrication of synthesized nanocomposites with enhanced surface area. Degradation effect of nanostructures on methylene blue (MB) and antibacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Bacillus subtilis (B. subtilis) pathogenic strains were investigated. The proposed photocatalytic mechanism illustrated the electron transfer facilitated by MWCNTs/ZnO/Chitosan structure which results in spatial separation of electron–hole pairs. Compared with ZnO and ZnO/Chitosan, the prepared MWCNTs/ZnO/Chitosan ternary nanocomposite showed high usage of UV illumination and superior separation of photogenerated electron–hole pairs. MWCNTs/ZnO/Chitosan illustrated 86.26% adsorption rate and outstanding increased photocatalytic activity on MB degradation efficiency of 98.76% after 20 min. Stability of photocatalyst reached from 98.76% initial decolorization to 85% at the fourth cycle. In addition, the ternary nanocomposite also exhibited remarkable bactericidal activity against gram-positive (S. aureus) and (B. subtilis) and gram-negative (E. coli) bacteria strains. Due to the obtained results, the prepared nanocomposite would be an efficient candidate photocatalyst with antibacterial properties.

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Section: Resultssupporting

confidence: 89%

“…The E VB and E CB of ZnO were measured to be 2.615 eV and − 0.135 eV, respectively. According to Liang et al, 47 , the LUMO energy level potential (E LUMO ) of the Chitosan was calculated to be − 0.35 eV. In addition, based on the bandgap of 2.47 eV for the Chitosan that was given before, the E HOMO of the Chitosan was determined 2.1 eV.…”

Section: Resultsmentioning

confidence: 99%

Facile fabrication of ternary MWCNTs/ZnO/Chitosan nanocomposite for enhanced photocatalytic degradation of methylene blue and antibacterial activity

Malekkiani

Magham

Ravari

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Thus, the indirect band gaps energy of ZnO, Chitosan, ZnO/Chitosan and MWCNTs/ZnO/Chitosan were determined to be 2.75, 2.47,0.97 and 0.8 eV, respectively. The calculated bandgap values of Chitosan and ZnO nanoparticles were comparable with previous studies 35,36 , respectively. The results obviously showed that after adding Chitosan to ZnO, the bandgap value reduces gradually and subsequently results to prepare condition for the photocatalytic removal of MB dye under the UV light irradiation.…”

Section: Optical and Electronic Characteristics Of The Zno Zno/chitosan And Mwcnts/zno/chitosan Nanocompositessupporting

confidence: 90%

“…The UV-Visible spectra and energy bandgap (E g ) of synthesized samples are illustrated in Fig. 7a ZnO nanoparticles were comparable with previous studies 35,36 , respectively. The results obviously showed that after adding Chitosan to ZnO, the bandgap value reduces gradually and subsequently results to prepare condition for the photocatalytic removal of MB dye under the UV light irradiation.…”

Section: Optical and Electronic Characteristics Of The Zno Zno/chitosan And Mwcnts/zno/chitosan Nanocompositessupporting

confidence: 88%

“…The E VB and E CB of ZnO were measured to be 2.615 eV and − 0.135 eV, respectively. According to Liang et al, 35 , the LUMO energy level potential (E LUMO ) of the Chitosan was calculated to be -0.35 eV. In addition, based on the bandgap of 2.47 eV for the Chitosan that was given before, the E HOMO of the Chitosan was determined 2.1 eV.…”

Section: Photocatalytic Mechanismmentioning

confidence: 99%

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One Pot Synthesis of Ternary MWCNTs/ZnO/Chitosan Nanocomposite for Enhanced Photocatalytic Degradation of Organic Dyes and Antibacterial Activity

Malekkiani

Magham

Ravari

et al. 2021

Preprint

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Developing a cheap, stable and effective photocatalyst is necessary for remediation of persistent organic pollutants. To address this challenge, we proposed a unique interfacial engineering technique and proper bandgap matching strategy to synthesize MWCNTs/ZnO/Chitosan ternary nanocomposite for effective photocatalytic application. The features of the prepared samples were determined by FESEM, TEM, EDX, elemental mapping, AFM, FT-IR, XRD, UV-Vis spectroscopy and BET surface analysis. The obtained results showed successful fabrication of synthesized nanocomposites. Degradation effect of nanostructures on methylene blue (MB) and antibacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Bacillus subtilis (B. subtilis) pathogenic strains were investigated. The proposed photocatalytic mechanism illustrated the electron transfer facilitated by MWCNTs/ZnO/Chitosan structure which results in spatial separation of electron-hole pairs. Compared with ZnO and ZnO/Chitosan, the prepared MWCNTs/ZnO/Chitosan ternary nanocomposite showed high usage of UV illumination and superior separation of photogenerated electron-hole pairs. MWCNTs/ZnO/Chitosan illustrated outstanding increased photocatalytic activity on MB degradation efficiency of 98.76% after 20 mins. In addition, the ternary nanocomposite also exhibited remarkable bactericidal activity against gram-positive (S. aureus) and (B. subtilis) and gram-negative (E. coli) bacteria strains. Due to the obtained results, the prepared nanocomposite would be an efficient candidate photocatalyst with antibacterial properties.

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Synthesis and characterization of chitosan-supported Fe2O3 nanohybrids for rapid sonophotocatalytic degradation of 2,4,6-trichlorophenol

Zia

Riaz

Aazam³

2021

Environ Sci Pollut Res

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Facile synthesis of chitosan membranes for visible-light-driven photocatalytic degradation of tetracycline hydrochloride

Abstract: Chitosan membrane exhibited a good visible light photocatalytic activity over tetracycline hydrochloride degradation. The corresponding degradation mechanism was investigated as shown above.

Cited by 18 publications

References 37 publications

Facile fabrication of ternary MWCNTs/ZnO/Chitosan nanocomposite for enhanced photocatalytic degradation of methylene blue and antibacterial activity

Facile fabrication of ternary MWCNTs/ZnO/Chitosan nanocomposite for enhanced photocatalytic degradation of methylene blue and antibacterial activity

One Pot Synthesis of Ternary MWCNTs/ZnO/Chitosan Nanocomposite for Enhanced Photocatalytic Degradation of Organic Dyes and Antibacterial Activity

Synthesis and characterization of chitosan-supported Fe2O3 nanohybrids for rapid sonophotocatalytic degradation of 2,4,6-trichlorophenol

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