Insoluble matrix proteins from shell waste for synthesis of visible-light response photocatalyst to mineralize indoor gaseous formaldehyde

Wang, Wenjun; Yu, Hongdi; Li, Kai; Lin, Fawei; Huang, Cheng; Yan, Beibei; Cheng, Zhanjun; Li, Xiaoqing; Chen, Guanyi; Hou, Li’an

doi:10.1016/j.jhazmat.2021.125649

Cited by 12 publications

(6 citation statements)

References 46 publications

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“…7a), implying that ˙O 2 − was produced only under illumination. 24 However, no signal of DMPO-˙OH was detected in either illumination or darkness (Fig. 7b).…”

Section: Resultsmentioning

confidence: 92%

“…Following the complete volatilization of HCHO solution into gas, HCHO gas may escape during the insertion of the photocatalyst into the reactor, resulting in an inaccurate calculation of the removal efficiency. 24 To avoid similar instances, the “one-step method” was implemented. Typically, after dissolving 80 mg of photocatalyst in ethanol and dispersing it for 10 min by ultrasonication, the photocatalyst was uniformly coated on the glass plate and dried for 1 h under vacuum at 60 °C.…”

Section: Methodsmentioning

confidence: 99%

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Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature

Wang

et al. 2022

New J. Chem.

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“…7a), implying that ˙O 2 − was produced only under illumination. 24 However, no signal of DMPO-˙OH was detected in either illumination or darkness (Fig. 7b).…”

Section: Resultsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature

Wang

et al. 2022

New J. Chem.

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“…As depicted in Figure d–f, these profiles were fitted by a Gaussian function, and four types of desorption peaks were separated. The peaks at temperatures lower than 120 °C corresponded to the water existing between the internal particles of the catalyst (type I water), which did not interact with the catalyst . However, none of the three catalysts contained this type of water.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at temperatures lower than 120 °C corresponded to the water existing between the internal particles of the catalyst (type I water), which did not interact with the catalyst. 41 However, none of the three catalysts contained this type of water. The type II water located between 120 and 200 °C corresponded to the surface adsorption of water or hydroxides formed by hydrogen bonds.…”

Section: Acs Esandt Engineeringmentioning

confidence: 99%

“…The peaks between 200 and 350 °C and above 350 °C can be attributed to the HOH (surface hydroxyl groups) active center formed by water and surface-active oxygen (type III water), and the dehydration of structural hydroxide (type IV water), respectively. 41 Table 1 tabulates the calculated proportion of these water types from the integrated area. Clearly, 0.1 Co/ MnO 2 −H had the largest proportion of the type III water, ca.…”

Section: Acs Esandt Engineeringmentioning

confidence: 99%

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Catalytic Oxidation of Acetone over Single-Atom Cobalt-Doped MnO_x Catalysts with Good Water Resistance

Lin,

Cai,

Tang

et al. 2024

ACS EST Eng.

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Developing economical and efficient transition-metal oxide catalysts as substitutes of noble metal catalysts for elimination of ketone pollutants is of great concern. However, the reported catalysts still face the challenges of undesirable conversion and CO 2 selectivity at low temperatures, as well as deficient water resistance, which restrict industrial application. In recent years, single-atom catalysts have emerged as hot topics in the field of catalysis due to their exceptional properties, but the relatively high cost and complex preparation methods limit their large-scale application. Herein, α-MnO 2 doped with single-atom Co was synthesized through a simple hydrothermal method. The catalyst with optimal loading (0.1 Co/MnO 2 −H) delivered outstanding performance for the oxidation of acetone, achieving 90% conversion of 100 ppm of acetone at 135 °C with 100% CO 2 yield, far superior to those of Pt/TiO 2 -and MnO 2 -based catalysts. Stable single-atom cobalt on MnO 2 with strong Mn−O−Co interaction, excellent oxygen activation property, low-temperature reducibility, abundant and stable Lewis acid sites, and easier CO 2 desorption contributes to its outstanding acetone oxidation activity at low temperatures. Remarkably, the loading of monatomic Co greatly enhanced the water resistance of Mn-based catalysts. H 2 O-TPD and density functional theory calculations showed that 0.1 Co/MnO 2 −H facilitated water dissociation into hydroxyl groups, which could form a hydrogen-bonded complex with acetone, thus promoting acetone oxidation instead of poisoning. These findings identify a facile and promising approach for preparing stable and high-performance monatomic catalysts for acetone purification as well as other thermocatalytic oxidation reactions, especially with the coexistence of H 2 O impurity.

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Switching the reaction mechanisms and pollutant degradation routes through active center size-dependent Fenton-like catalysis

Wang

Xiong

Shi³

et al. 2023

Applied Catalysis B: Environmental

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Insoluble matrix proteins from shell waste for synthesis of visible-light response photocatalyst to mineralize indoor gaseous formaldehyde

Cited by 12 publications

References 46 publications

Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature

Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature

Catalytic Oxidation of Acetone over Single-Atom Cobalt-Doped MnO_x Catalysts with Good Water Resistance

Switching the reaction mechanisms and pollutant degradation routes through active center size-dependent Fenton-like catalysis

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Insoluble matrix proteins from shell waste for synthesis of visible-light response photocatalyst to mineralize indoor gaseous formaldehyde

Cited by 12 publications

References 46 publications

Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature

Novel functionalization of ZIF-67 for an efficient broad-spectrum photocatalyst: formaldehyde degradation at room temperature

Catalytic Oxidation of Acetone over Single-Atom Cobalt-Doped MnOx Catalysts with Good Water Resistance

Switching the reaction mechanisms and pollutant degradation routes through active center size-dependent Fenton-like catalysis

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Product

Resources

About

Catalytic Oxidation of Acetone over Single-Atom Cobalt-Doped MnO_x Catalysts with Good Water Resistance