Surface Plasmon response of Pd deposited ZnO/CuO nanostructures with enhanced photocatalytic efficacy towards the degradation of organic pollutants

Kumari, V. Sugantha; Yadav, Sushma; Mittal, Anuj; Kumari, Kavitha; Marı́, B.; Kumar, Naveen

doi:10.1016/j.inoche.2020.108241

Cited by 36 publications

(18 citation statements)

References 38 publications

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“…Furtheremore, metal ion doping or coupled with binary nanocomposites has shown a large dye degradation activity. Based on the above discussion some visible light-driven ZnO/Ag2MoO4/Ag nanocomposites [35], Pd deposited ZnO/CuO nanostructures [36], magnetic Ag/ZnO/Fe3O4 composite [37] and Fe doped ZnO/CdS nano composite [38] are some of the transition metal and noble metal deposited nanocomposite which show explempory performance in the photocatalytic applications.. On account of the above mentioned facts, polar solvent assisted co-precipitation method is used for the successful preparation of Mn doped CdS/ZnO nanocomposites So the enhancement of photocatalytic activity of Mn doped CdS/ZnO nanocomposites was obtained by facilitating the separation efficiency of photogenerated carriers. The nanostructures, morphologies, surface chemical composition, photocatalytic activity, and possible performance improvement mechanism of Mn doped CdS/ZnO nanocomposites have been researched in detail.…”

Section: Introductionmentioning

confidence: 80%

“…However, an unusual photocatalytic activity change was also observed upon the addition of IPA as a OH scavengers. From the scavenging study it is found that the O 2and OH are the main reactive species in the Mn doped CdS/ZnO nanocomposites [47]. The degradation efficiency of Mn doped CdS/ZnO nanocomposites was decreased slightly in the presence of AA when compared with zero scavengers, which indicates the photogenerated holes are not the main active species for degradation of RO 30. As shown in the Figure 11, ~95% degradation of MB was found in the absence of any scavenger, while 16% degradation was found with BQ, 65 % with IPA and 85% with AA respectively.…”

Section: Reaction Mechanismmentioning

confidence: 94%

“…Among the Mn doped CdS/ZnO nanocomposites, 0.8 mol % Mn doped CdS/ZnO nanocomposite shows better dye degradation efficiency. The main reason was 0.8 mol% of Mn content has sufficiently produced super oxide ion radical and hydroxyl radical in the way of effective photogenerated electron hole charge separation mechanism [47]. This enhanced photocatalytic efficiency achieved by within the 110 minutes.…”

Section: Photocatalytic Studiesmentioning

confidence: 98%

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Enhancement Photocatalytic Activity of Mn Doped Cds/Zno Nanocomposites for the Degradation of Methylene Blue Under Solar Light Irradiation

Sivaranjani

Sivakumar²,

Dharmaraja³

2022

Advances in Materials Science

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In this study, Mn doped CdS/ZnO nanocomposites synthesized by co-precipitation method and its photocatalytic activity was tested using methylene blue under solar light irradiation. The prepared hybrid nanocomposites are characterized by using different physicochemical techniques including XRD, FESEM, EDX, TEM, UV-vis DRS and PL analysis. From the XRD analysis, Mn doped ZnO/CdS nanocomposite diffraction peaks only reflect the binary crystalline structures of ZnO and CdS. However, there is no characteristic peak of Mn is found that may be because of low content of Mn doped on ZnO/CdS. But Mn (2.9 wt%) was detected in the Mn doped ZnO/CdS nanocomposite, which was measured by EDX analysis. The FESEM and TEM results exhibit the surface particle of Mn doped ZnO/CdS nanocomposite which have spherical nature and confirmed the formation of Mn doped ZnO/CdS nanocomposites. The photocatalytic degradation results have revealed that the Mn doped CdS/ZnO nanocomposites exhibit admirable activity toward the photocatalytic degradation of the MB. The reason for excellent photocatalytic activity of Mn doped CdS/ZnO nanocomposites indicates the absorbance band shifted to red region and reduction of recombination of photogenerated electron-hole, which is in good agreement with UV-visible DRS analysis and PL study results. The fitted kinetic plots showed a pseudo-first-order reaction model and the appropriate rate constants were found to be 0.0068 min−1, 0.00846 min−1, and 0.0188 min−1, for ZnO, 25 % CdS/ZnO, and 0.8 mol% Mn doped CdS/ZnO nanocomposites, respectively. The maximum photocatalytic activity was achieved by 0.8 mol% Mn doped CdS/ZnO nanocomposites with a 95% degradation efficiency of MB. Hydroxyl and superoxide radicals, having a vital role in the degradation of MB, confirmed scavenging experiments. In addition, the recycling tests displays that the Mn doped CdS/ZnO nanocomposites have shown good stability and long durability. The enhanced photodegradation activity of Mn doped CdS/ZnO nanocomposites indicates the potential of the nanocomposite for the treatment of organic pollutants from the textile wastewater.

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Section: Introductionmentioning

confidence: 80%

Section: Reaction Mechanismmentioning

confidence: 94%

Section: Photocatalytic Studiesmentioning

confidence: 98%

See 1 more Smart Citation

Enhancement Photocatalytic Activity of Mn Doped Cds/Zno Nanocomposites for the Degradation of Methylene Blue Under Solar Light Irradiation

Sivaranjani

Sivakumar²,

Dharmaraja³

2022

Advances in Materials Science

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“…Proc. 2022, 6, 1 2 of 8 another feasible approach can be accomplished via the combination of ZnO with other inorganic porous materials, such as graphene oxide [7], single-walled carbon nanotubes [8], fullerenes [9], and Pd [10], which can successfully improve its photocatalytic activity. For this purpose, zeolite is considered a good candidate for the support of photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

ZnO-Incorporated ZSM-5 for Photocatalytic CO2 Reduction into Solar Fuels under UV–Visible Light

Satriyatama

Budi

Iman

et al. 2021

The 2nd International Electronic Conference on Catalysis Sciences—A Celebration of Catalysts 10th Anniversary

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“…The 0.2 mol % Mn doped CdS/ZnO nanocomposites were shown lowest activity is due to very little amount of Mn doped on CdS/ZnO binary nanocomposites. In addition, the Mn content increases beyond the optimum level of 0.8 mol% decrease the catalytic activity [37]. The excess transition metal gets agglomeration due to overlapping and forms a cluster.…”

mentioning

confidence: 99%

Enhancement photocatalytic activity of Mn doped CdS/ZnO nanocomposites for the degradation of methylene blue under solar light irradiation

Jegan

Sivaranjani²,

Sivakumar³

2022

Preprint

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Heterogeneous photocatalysis is an effective and gifted waste water treatment technology for the removal of textile effluents. Among the effective photocatalytic treatment, Hybrid semiconductor photocatalysts have been extensively applied and received greater attention in the last few decades. This effective statement has a predominate key for choosing hybrid nanocomposite photocatalysis. In this study, Mn doped CdS/ZnO nanocomposites synthesized by co-precipitation method and its photocatalytic activity tested using methylene blue under solar light irradiation. The as prepared hybrid nanocomposites is characterized by using different physicochemical techniques including X-ray diffraction, FESEM, EDX, TEM, UV-vis DRS and PL analysis. The photocatalytic degradation results have revealed that the Mn doped CdS/ZnO nanocomposites exhibits admirable activity toward the photocatalytic degradation of the MB. The fitted kinetic plots were showed a pseudo-first-order reaction model and the appropriate rate constants were found to be 0.0068 min− 1, 0.00846 min− 1, and 0.0188 min− 1, for ZnO, 25% CdS/ZnO, and 0.8 mol% Mn doped CdS/ZnO nanocomposites, respectively. The maximum photocatalytic activity was achieved by 0.8 mol% Mn doped CdS/ZnO nanocomposites with a 95% degradation efficiency of MB. Hydroxyl and superoxide radicals were having a vital role in the degradation of MB, confirmed by scavenging experiments. In addition, the recycling tests display that the Mn doped CdS/ZnO nanocomposites shows good stability and long durability. The enhanced photodegradation activity of Mn doped CdS/ZnO nanocomposites indicates the potential of the nanocomposite for the treatment of organic pollutants from the textile wastewater.

show abstract

Surface Plasmon response of Pd deposited ZnO/CuO nanostructures with enhanced photocatalytic efficacy towards the degradation of organic pollutants

Cited by 36 publications

References 38 publications

Enhancement Photocatalytic Activity of Mn Doped Cds/Zno Nanocomposites for the Degradation of Methylene Blue Under Solar Light Irradiation

Enhancement Photocatalytic Activity of Mn Doped Cds/Zno Nanocomposites for the Degradation of Methylene Blue Under Solar Light Irradiation

ZnO-Incorporated ZSM-5 for Photocatalytic CO2 Reduction into Solar Fuels under UV–Visible Light

Enhancement photocatalytic activity of Mn doped CdS/ZnO nanocomposites for the degradation of methylene blue under solar light irradiation

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