Cobalt-Doped Cryptomelane: Surface-Tailored Oxygen Defects and Efficiently Catalytic Ozonation of p-Nitrophenol

Tran-Thuy, Tuyet-Mai; Tran, Trong-Phu; Nguyen, Dung Van

doi:10.1007/s11244-022-01773-5

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…18 Semiconductor nanomaterials often have plenty of defects on their surface, which facilitate the adsorption and activation of ozone. [19][20][21] In fact, exposed crystal facets and surface defects are closely related in nanomaterials. For example, the catalyst's predominantly exposed crystal facets have high surface energy, and defects are easily formed on its surface, thus the effects of crystal facets and surface defects on ozone activation are coexisting or synergistic.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of exposed facets and surface defects of ZnO nanomaterials for photocatalytic ozonation of organic pollutants

Yang

Peng

Tao

et al. 2023

Environ. Sci.: Nano

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Section: Introductionmentioning

confidence: 99%

Synergistic effect of exposed facets and surface defects of ZnO nanomaterials for photocatalytic ozonation of organic pollutants

Yang

Peng

Tao

et al. 2023

Environ. Sci.: Nano

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Recent advances in advanced oxidation processes (AOPs) for the treatment of nitro- and alkyl-phenolic compounds

Arifin

Jusoh

Abdullah

et al. 2023

Environmental Research

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One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

Nguyen,

Tran,

Nguyen

et al. 2023

Mater. Res. Express

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The current research proposes an innovative strategy for the facile preparation of magnetic activated carbon (MAC) from rosemary distillation residues (RDR). As a magnetic precursor, FeCl3 was impregnated into RDR before KOH was added as an activating agent. One-pot pyrolysis was then conducted to produce zero-valent iron nanoparticles (14.4 wt%) embedded in the activated carbon matrix. Moreover, KOH activation yielded MAC with a large total pore volume of 0.27 cm3/g, a high specific surface area of 458 m2/g, and hierarchical porosity. With a large porous system and different polar functional groups, MAC was subsequently investigated for malachite green (MG) removal in aqueous media. At pH 6.0, MAC eliminated 93.2% MG (50 mg/L) within 120 min. The adsorption process was consistent with the pseudo-second-order kinetic model and the Langmuir isotherm, with a maximum adsorption capacity of 82.6 mg/g. Additionally, MAC demonstrated effective reusability after five consecutive cycles, when MG removal slightly decreased from 96.4±0.6 to 91.8±2.3%. Notably, MAC with a strong saturation magnetization of 18.4 emu/g could be conveniently recovered from treated media through magnetic fields. Overall, rosemary distillation residue-derived magnetic activated carbon can be a potential adsorbent for malachite green remediation thanks to its cost-effectiveness, eco-friendliness, and magnetic separability.

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Cobalt-Doped Cryptomelane: Surface-Tailored Oxygen Defects and Efficiently Catalytic Ozonation of p-Nitrophenol

Cited by 3 publications

References 33 publications

Synergistic effect of exposed facets and surface defects of ZnO nanomaterials for photocatalytic ozonation of organic pollutants

Synergistic effect of exposed facets and surface defects of ZnO nanomaterials for photocatalytic ozonation of organic pollutants

Recent advances in advanced oxidation processes (AOPs) for the treatment of nitro- and alkyl-phenolic compounds

One-pot fabrication of zero-valent iron-embedded activated carbon from rosemary distillation residues for malachite green removal

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