Efficient cleanup of emerging contaminants by green biosynthesized Z-scheme-type Bi2O3@CdS nanocomposite with improved photoactivity

Rani, Manviri; Meenu, .; Shanker, Uma

doi:10.1007/s41204-022-00283-9

Cited by 17 publications

(24 citation statements)

References 83 publications

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“…(00‐023‐1494). Cubic crystal structure with a = b = c = 9.9 A° and α = β = γ = 90° was obtained with Fm3m space group 36 . The nanocomposite of Cr 2 O 3 @ZnHCC showed crystalline behavior (sharp peaks).…”

Section: Resultsmentioning

confidence: 96%

“…The shape of Cr 2 O 3 @ZnHCC seemed uniform incorporation of prisms into the cubic crystals (Figure 2a–c). The base of the composite was ZnHCC (626.2 g mol −1 ) due to its higher molecular weight than Cr 2 O 3 (151.9 g mol −1 ) 29,36 …”

Section: Resultsmentioning

confidence: 99%

“…After the tenth cycle, the amount of catalyst runs out in the solution. No leaching of metals and catalyst loss was obtained during the analysis of reusability of metal oxide coupled Prussian blue nanostructure 36 . UV absorbance of Cr 2 O 3 @ZnHCC nanoparticle in de‐ionized water at time 0 and 24 h showed no change (Figure 5S).…”

Section: Reusability and Leaching Analysismentioning

confidence: 97%

“…No leaching of metals and catalyst loss was obtained during the of reusability of metal oxide coupled Prussian blue nanostructure. 36 UV absorbance of Cr 2 O 3 @ZnHCC nanoparticle in de-ionized water at time 0 and 24 h showed no change (Figure 5S). This fact was further supported by the P-XRD analysis of the photocatalyst (1st and 10th run) having no major change in a model (Figure 14b).…”

Section: Process For Degradation Of Atenolol Drugmentioning

confidence: 99%

“…The base of the composite was ZnHCC (626.2 g mol À1 ) due to its higher molecular weight than Cr 2 O 3 (151.9 g mol À1 ). 29,36 HR-TEM analysis revealed the information of internal morphology and size (profiling histogram graph) of synthesized nanomaterials.…”

Section: Preparation and Role Of Seed Extractmentioning

confidence: 99%

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Efficient photocatalytic degradation of emerging pollutants by green synthesized Prussian blue analogue nanocomposite

Yadav

Rani

Shanker

2022

Env Prog and Sustain Energy

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Worldwide consumption, toxicity, and bioaccumulation of paracetamol (PCM) and atenolol (ATL) has drawn attention of researchers over last decades. A small portion of these drugs is absorbed by human body and rest of them is excreted through urine and feces to the environment (water bodies and soil) which might result in negative impacts. Nanocomposite of chromium oxide coupled with zinc hexacyanocobaltates (Cr 2 O 3 @ZnHCC) was synthesized by a green-method using Sapindus mukorossi seed-extract for the removal of targeted drugs. Microscopic and spectroscopic analysis of Cr 2 O 3 @ZnHCC showed uniformly incorporated prisms into cubic structure having ~75 nm particle size. Well-characterized Cr 2 O 3 @ZnHCC and individuals (Cr 2 O 3 & ZnHCC) were utilized for the degradation of PCM and ATL under direct sunlight and dark conditions. Highest degradation of targeted drugs (91%-94%) resulted at 20 mg L À1 concentration of pollutant, 25 mg of catalyst dose, and pH ~7 under daylight exposure (5 h). First-order kinetics followed with a high adsorption capacity, X m (13.4-14.5 mg g À1 ) value was obtained to confirm the strong binding with the pollutants. Moreover, Cr 2 O 3 @ZnHCC substantially suppressed the half-life of targeted drugs (PCM: 0.6 h; ATL: 2.9 h) and converted them into safer-small metabolites as confirmed by liquid chromatography-mass-spectrometry analysis, and the reduction of carbon content was confirmed by total organic carbon analysis. The charge separation mechanism was assisted by UV reflectance and photoluminescence data. The synthesized green-nano photocatalyst displayed high reproducibility (up to 10th cycle), sensitivity, and stability during the degradation process which makes this a suitable candidate for industrial applications.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Reusability and Leaching Analysismentioning

confidence: 97%

Section: Process For Degradation Of Atenolol Drugmentioning

confidence: 99%

Section: Preparation and Role Of Seed Extractmentioning

confidence: 99%

See 3 more Smart Citations

Efficient photocatalytic degradation of emerging pollutants by green synthesized Prussian blue analogue nanocomposite

Yadav

Rani

Shanker

2022

Env Prog and Sustain Energy

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Hydrothermal Recrystallization as a Strategy to Reveal the Structural Diversity in Hexacyanometallates: Nickel and Copper Hexacyanoosmates(II)

et al. 2020

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The results discussed herein reinforce the relevance of the hydrothermal recrystallization in transition metal hexacyanometallates as a suitable strategy to access the structural diversity of this family of coordination polymers. Copper(2+) and nickel(2+) hexacyanoosmates(II) were prepared by the precipitation method using hexacyanoosmic(II) acid as the complex anion source, obtaining powders of insufficient crystalline quality for the structural study. These powders were then recrystallized under hydrothermal conditions. For Ni, three new phases where formed, monoclinic and tetragonal, and a hexagonal modification when the monoclinic one is dehydrated under soft heating. For copper, one new tetragonal phase was [a] Prof. 1763found, in addition to the previously reported cubic one, typical of Prussian blue analogues. The crystal structure for these four nickel and cooper hexacyanoosmates(II) were solved and refined ab initio from powder XRD data. The refined crystal structures are properly supported by a detailed spectroscopic study from IR and UV/Vis data, Ligand Field Analysis, and thermal, magnetic and hydrogen adsorption measurements. In the anhydrous phase for nickel, neighboring Ni atoms were found coordinated by bifurcated N end, an atypical coordination mode for the CNligand. The results herein discussed contribute to shed light on the vast information unrevealed on the coordination chemistry of transition metal hexacyanometallates. catalysis, [6] gas storage and separation, [7] batteries, [8] and environmental remediation, [9] etc. However, it is not possible to divorce both topics since functionality directly depends on the material's electronic and crystalline structure.The most studied polymeric hexacyanometallates are those where the internal metal center (M, linked to the C end of the CNgroup) belongs to the first transition series. This obeys to the greater availability of the building blocks, to historical reasons, but also to the fact that they are obtained with good crystallinity by the very easy precipitation method. The hexacyanide anions containing metals with relatively diffuse d orbitals -corresponding to the second and third transition series -have proved to improve the robustness of the polymeric frameworks. [10] However, when these compounds are prepared by the traditional precipitation method, they frequently exhibit relatively low crystallinity. [11] This is a critical issue for the structures containing a great number of vacancies of the hexacyanide building block around the outer metal (T, linked to the N end of the CNgroup), which requires recrystallization procedures after precipitation of the crude compound. [10] In this work, we explore the potentialities of solvothermal recrystallization, beyond improving the crystallinity of materials, with the aim of generating structural diversity.In general, structural diversity for each combination of inner and outer metals, is not frequently observed in polymeric hexacyanometallates. A unique behavior in this sense appears for Co 2+ a...

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Green synthesis of silver‐doped metal hexacyanoferrates nanostructures for efficient cleanup of endocrine‐disrupting pesticides

Rani,

Choudhary,

Shanker

2023

Env Prog and Sustain Energy

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Herein, inexpensive and eco‐friendly approach for the green synthesis of silver‐doped metal hexacyanoferrates (Ag@MHCFs) nanocomposite using green tea extract has been reported. Silver‐doped MHCF nanocatalysts were used to photo‐degradation endocrine disruptor pesticides, namely endosulfan (ES) and atrazine (AT), from water under direct Sunlight. Spectroscopic and electron microscopic techniques confirmed the successful synthesis of nanomaterials. Ag@FeHCF observed maximum degradation efficiency due to their high surface area (89.3 m2g−1), significant zeta potential (−43.4 mV), lower band gap (1.5 eV), and low photoluminescence intensity as compared to other Ag doped MHCFs. Best degradation results showed with concentration amount (5 mg L−1), dose (20 mg of ES; 15 mg of AT), at neutral pH under sunlight irradiation. Degradation up to 98% for ES and 96% for AT was reported. The degradation ensued by Langmuir adsorption and first‐order kinetics. GC–MS analysis showed the degradation of pesticides into CO2, H2O, and harmless minor metabolites under Sunlight. Ag@FeHCF have indicated high reusability (n = 10), ensuring their charge separation, stability, and sustainability. Ag@MHCF nanoparticles may show as substitute catalysts for industrial use with a fervent scope.

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Efficient cleanup of emerging contaminants by green biosynthesized Z-scheme-type Bi2O3@CdS nanocomposite with improved photoactivity

Cited by 17 publications

References 83 publications

Efficient photocatalytic degradation of emerging pollutants by green synthesized Prussian blue analogue nanocomposite

Efficient photocatalytic degradation of emerging pollutants by green synthesized Prussian blue analogue nanocomposite

Hydrothermal Recrystallization as a Strategy to Reveal the Structural Diversity in Hexacyanometallates: Nickel and Copper Hexacyanoosmates(II)

Green synthesis of silver‐doped metal hexacyanoferrates nanostructures for efficient cleanup of endocrine‐disrupting pesticides

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