Pd@PdS core shell nanocubes for photocatalytic degradation of methylparaben

Yoo, Suhwan; Mohan, Harshavardhan; Oh, Hyeon Seung; Kim, Gitae; Hahn, Jong Hoon; Shin, Taeho

doi:10.1016/j.matlet.2021.131444

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…75-2228). [23] The XRD pattern of the synthesized Nb 2 O 5 /PdS heterostructure shows a clear domination of peaks from Nb 2 O 5 , while negligible peaks of PdS (marked as "*") were observed, which could possibly be due to the low abundance. [26] As shown in Figure 2(c), the peak of O 1s at 529.82 eV corresponds to lattice oxygen atoms and surface-adsorbed oxygen species.…”

Section: Xrd Analysismentioning

confidence: 96%

“…Similarly, 10 mM K 2 PdCl 4 , 0.1 M ascorbic acid, 0.048 g of CTAB and 10 mM thiourea were subjected to ultrasonic dispersion for 30 min at 60 °C in 100 mL water, transferred to a Teflon lined stainless steel autoclave, and heated at 120 °C for 12 h to obtain PdS nanodisks. [23] Nb 2 O 5 and PdS thus obtained were subjected to hydrothermal dispersion (10 : 1 w/w) at 150 °C for 12 h, followed by freeze drying to obtain Nb 2 O 5 /PdS heterostructure photocatalysts (Scheme 1).…”

Section: Chemcatchemmentioning

confidence: 99%

“…[22] Yoo et al studied the efficiency of Pd@PdS towards methyl paraben degradation and reported that the addition of PdS as a co-catalyst increased the degradation efficiency from 80 % to 100 %, thereby substantiating the promising potential of PdS for photocatalysis. [23] In this study, we synthesized the heterostructure of selfassembled Nb 2 O 5 decorated with PdS nanodisks to induce synergistic properties and examined its photocatalytic watersplitting performance.…”

Section: Introductionmentioning

confidence: 99%

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PdS Coupled Nb₂O₅ Superstructure for Photocatalytic Overall Water Splitting

et al. 2023

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An efficient approach to resolve the current energy crisis is the photocatalytic production of hydrogen that is renewable and readily available from water and solar energy. In this study, we prepared nanocomposites by coupling PdS nanodisks on selfassembled Nb 2 O 5 superstructures and demonstrated them as an efficient water splitting photocatalyst for oxygen and hydrogen production. Various characterization techniques were employed to examine the physical and chemical properties and advantages of the Nb 2 O 5 /PdS nanocomposite over bare Nb 2 O 5 superstructure and PdS nanoparticles. The synthesized nanocomposite showed a hydrogen evolution rate of 665 μmol g À 1 min À 1 and oxygen evolution rate of 211 μmol g À 1 min À 1 , which is twice as high as that of Nb 2 O 5 superstructure and three times higher than that of PdS nanoparticles. The composite survived without any structural deterioration, even after six treatment cycles, thereby indicating its practical applicability.

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Section: Xrd Analysismentioning

confidence: 96%

Section: Chemcatchemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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PdS Coupled Nb₂O₅ Superstructure for Photocatalytic Overall Water Splitting

et al. 2023

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“…Biodegradation by traditional methods (Chang et al 2023), physical adsorption and chemical oxidation to remove MeP from wastewater, there are shortcomings such as long degradation time, incomplete degradation and easy to cause secondary pollution. For efficient removal of MeP from water, For the efficient removal of MeP from water, advanced oxidation technologies (AOPs) (Chen et al 2023;Dhaka et al 2017;Preethi et al 2024;Saravanan et al 2022) such as photocatalysis (Yoo et al 2022), Fenton's(Gamarra-Güere et al 2022Raj et al 2023), peroxymonosulfate (Li et al 2022), ozone/ultraviolet (UV) (Asgari et al 2019), and low-temperature plasma (Feng et al 2021) have been widely used in wastewater treatment in recent years. AOPs act to generate a large number of reactive hydroxyl radicals (•OH) in wastewater, which contribute to the degradation of organic pollutants with their high oxidizing properties.…”

Section: Introductionmentioning

confidence: 99%

Rapid degradation of methyl p-hydroxybenzoate by dielectric barrier discharge synergized with persulfate: Performance, mechanism, pathway and toxicity assessment

Duan,

Dong,

et al. 2024

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In this study, a dielectric barrier discharge reactor was designed for the rapid and efficient degradation of methylparaben (MeP), an organic pollutant in wastewater. The superiority of the degradation performance against MeP was jointly evaluated by degradation, voltage-current waveform plots, kinetic curves, energy efficiency and synergy factor. The single DBD discharge performance was investigated and it was determined that the coaxial electrode structure achieves an optimal energy consumption of 0.28 g/kWh at a dielectric tube thickness of 1 mm gas gap of 2 mm peak voltage of 21 kV.The degradation rate of MeP reached 70.1% after 15 min of treatment at discharge frequency of 7.8 kHz, aeration flow rate of 8 L/min, initial MeP concentration of 30 mg/L and pH=7. The DBD synergized persulfate (PS) system conforms to first-order kinetics, with a kinetic constant increase of 0.080 min-1 over single DBD. The highest synergy factor was 2.50 at a PS addition of 15 mM, and the highest energy efficiency was 0.99 g/kWh at an initial concentration of 90 mg/L of MeP. Common inorganic anions, CO2-3 promoted degradation, SO2- 4 inhibited degradation, Cl-and HPO2-4 had little effect. •OH, •O-2, and SO-4• all participate in the reaction, with •O-2 contributing the most. H2O2 and O3 were equally involved in degradation.The actual intermediates of the degradation process were identified by LC-MS and combined with DFT calculations to predict the MeP degradation pathway, and toxicity analysis by QSAR model.

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