Diatomite-supported birnessite–type MnO2 catalytic oxidation of formaldehyde: Preparation, performance and mechanism

Han, Zhengyan; Wang, Can; Zou, Xuehua; Dong, Shaojun; Zhao, Yi; Xie, Jingjing; Li, Haibo

doi:10.1016/j.apsusc.2019.144201

Cited by 68 publications

(18 citation statements)

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“…At the same time, two new weak peaks at 569 cm −1 and 641 cm −1 appear which correspond to δ-MnO 2 in PCS-MnO 2 -2. This is consistent with the XRD result [ 38 ].…”

Section: Resultssupporting

confidence: 93%

Controllable Carbonization of Plastic Waste into Three-Dimensional Porous Carbon Nanosheets by Combined Catalyst for High Performance Capacitor

Liu

et al. 2020

Nanomaterials

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Polyethylene terephthalate (PET) plastic has been extensively used in our social life, but its poor biodegradability has led to serious environmental pollution and aroused worldwide concern. Up to now, various strategies have been proposed to address the issue, yet such strategies remain seriously impeded by many obstacles. Herein, waste PET plastic was selectively carbonized into three-dimensional (3D) porous carbon nanosheets (PCS) with high yield of 36.4 wt%, to be further hybridized with MnO2 nanoflakes to form PCS-MnO2 composites. Due to the introduction of an appropriate amount of MnO2 nanoflakes, the resulting PCS-MnO2 composite exhibited a specific capacitance of 210.5 F g−1 as well as a high areal capacitance of 0.33 F m−2. Furthermore, the PCS-MnO2 composite also showed excellent cycle stability (90.1% capacitance retention over 5000 cycles under a current density of 10 A g−1). The present study paved an avenue for the highly efficient recycling of PET waste into high value-added products (PCSs) for electrochemical energy storage.

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“…At the same time, two new weak peaks at 569 cm −1 and 641 cm −1 appear which correspond to δ-MnO 2 in PCS-MnO 2 -2. This is consistent with the XRD result [ 38 ].…”

Section: Resultssupporting

confidence: 93%

Controllable Carbonization of Plastic Waste into Three-Dimensional Porous Carbon Nanosheets by Combined Catalyst for High Performance Capacitor

Liu

et al. 2020

Nanomaterials

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“…The third stage, at 400–500 °C, was assigned to the removal of the structural hydroxyl. 31 Weight loss at temperatures of 500–800 °C corresponded to the thermal decomposition of MnO 2 , which occurs when temperatures increase, as ascertained via eqn (6) (ref. 32 and 33 ) as follows: …”

Section: Resultsmentioning

confidence: 99%

Thermal activation significantly improves the organic pollutant removal rate of low-grade manganese ore in a peroxymonosulfate system

Chen

Yin²,

Dong

et al. 2022

RSC Adv.

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“…The large amount of Fe 3+ requires the generation of free electron in the crystal Three kinds of surface oxygen species were clearly observed from the O1s spectra in Figure 3c. The one peak located at ~530.1 eV was is assigned to the lattice oxygen species (O latt ), and the peaks located at around 531.6 eV and 532.5 eV are ascribed to the surface adsorbed oxygen (O ads ) and surface hydroxyl oxygen (O OH ) species [22,37], respectively. Literature demonstrates that the surface adsorbed oxygen species play an important role in the deep oxidation of VOCs [12,38].…”

Section: Xps Analysismentioning

confidence: 99%

“…Supports not only improve the distribution of active ingredients, but also contribute to the enhancement of the activity through the interaction with the active species. Recently, the application of natural clay minerals (e.g., palygorskite, diatomite, montmorillonite, and halloysite) for catalytic supports have attracted great attention due to their excellent thermal stability, chemical stability, and abundant mesopores structure [21][22][23]. Palygorskite (Pal) is a natural rod-like clay mineral with the chemical formula of Mg 5 Si 8 O 20 (OH) 2 (H 2 O) 4 •4H 2 O, and aluminum or iron has an obvious substitution of magnesium.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation of Toluene over Fe-Rich Palygorskite Supported Manganese Oxide: Characterization and Performance

Dong

Chen

et al. 2022

Catalysts

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A series of Fe–rich palygorskite supported manganese oxide (X%Mn–Pal) catalysts were prepared by co-precipitation method and used as catalysts for toluene oxidation. The components and structure of the as-prepared catalysts were characterized by XRD, Raman, TEM, XPS, and in situ DRIFTS. The results showed that the 15%Mn–Pal catalyst exhibited the highest catalytic activity (T90 = 227 °C) and excellent cycling stability for the oxidation of toluene compared with other catalysts. The characterization results indicated that remarkable activity of the 15%Mn–Pal catalyst for toluene oxidation should be ascribed to the abundant surface oxygen vacancies. In situ DRIFTS results elucidated that benzoate was the main intermediate, which can be further oxidized into H2O and CO2. The objectives of this study are to (i) investigate the synergistic effect between Fe and Mn for toluene oxidation, (ii) develop an efficient catalyst for toluene abatement with high activity and low–cost, and (iii) promote the application of natural Fe–rich palygorskite in the control of VOCs.

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Diatomite-supported birnessite–type MnO2 catalytic oxidation of formaldehyde: Preparation, performance and mechanism

Cited by 68 publications

References 50 publications

Controllable Carbonization of Plastic Waste into Three-Dimensional Porous Carbon Nanosheets by Combined Catalyst for High Performance Capacitor

Controllable Carbonization of Plastic Waste into Three-Dimensional Porous Carbon Nanosheets by Combined Catalyst for High Performance Capacitor

Thermal activation significantly improves the organic pollutant removal rate of low-grade manganese ore in a peroxymonosulfate system

Catalytic Oxidation of Toluene over Fe-Rich Palygorskite Supported Manganese Oxide: Characterization and Performance

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