Supported Ru nanocatalyst over phosphotungstate intercalated Zn-Al layered double hydroxide derived mixed metal oxides for efficient hydrodeoxygenation of guaiacol

Wang, Zihang; Wang, An; Yang, Lan; Fan, Guoli; Li, Feng

doi:10.1016/j.mcat.2022.112503

Cited by 15 publications

(6 citation statements)

References 63 publications

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“…In comparison to neat CF-LDH, the higher oxygen defects were obtained for the derived specimen, i.e., CF-500, which suggests that the defects may have been introduced to the specimen during thermal treatment or the calcination process. These created or formed defects are well-known as electron trappers, which are reported to be beneficial in catalysis and contribute to speedier reaction kinetics. − Furthermore, the oxygen vacancy supports the creation of a chemical bond between PMS and surface-adsorbed oxygen and promotes the oxygen adsorption capacity of the material, which is beneficial for the photocatalytic degradation process …”

Section: Resultsmentioning

confidence: 99%

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

Mohanty,

Sahoo,

Das

et al. 2024

Inorg. Chem.

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The utilization of multivalence ionic metal species generated through a peroxymonosulfate (PMS)-assisted photocatalytic system is a promising platform for the selective degradation of water contaminants. However, achieving an effective electron transport and enhanced separation efficiency for these metal species is a daunting challenge. Thus, our current study addresses this challenge by using a Co−Fe-based layered-double-hydroxide template to synthesize a Co 3 O 4 /FeCo 2 O 4 p−n heterojunction composite via a simple monosynthetic route. The resultant composite is thoroughly validated through advanced characterization techniques that efficiently activate PMS for sulfadiazine (SDZ) degradation under visible light, achieving a remarkable degradation efficiency of up to 90%. This accomplishment is attributed to factors including intimate interfacial contact, excellent light harvesting, mesoporosity, and oxygen vacancies within the composite. The formation of a distinct p−n heterojunction following the S-scheme charge dynamic significantly enhances photogenerated carrier separation and reduces charge recombination. The research delves into comprehensive investigations including degradation studies, active species trapping experiments, parameter exploration, and in-depth liquid chromatography−mass spectrometry for analysis of the degradation byproducts and pathway. Induced oxygen vacancies, strategically placed active surface sites, and mesoporosity in the Co 3 O 4 /FeCo 2 O 4 composite synergistically boosted the sluggish PMS activation, leading to enhanced SDZ degradation. This study introduces a new perspective by demonstrating the potential of a single-material, mixed-metal oxide-based p−n heterojunction photocatalytic system following the S-scheme charge-transfer route for SDZ degradation. The findings contribute toward emphasizing the importance of tailored composite materials in tackling persistent contaminants.

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Section: Resultsmentioning

confidence: 99%

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

Mohanty,

Sahoo,

Das

et al. 2024

Inorg. Chem.

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“…Since Ru-PAF-30-SO 3 H/5 catalyst contains more sulfo groups that promote the cleavage of the C ar -O bond, the amount of phenolic adduct in the reaction products increases [48], and due to the ease of its hydrogenation, the yield of cyclohexanol also increases [47]. In addition, the amount of sulfo groups in the catalyst becomes sufficient to carry out deoxygenation reactions, so the resulting cyclohexanol is further converted to cyclohexane via deoxygenation and hydrogenation [49].…”

Section: Investigation Of the Influence Of The Number Of Acid Sitesmentioning

confidence: 99%

Hydrodeoxygenation of Lignin-Based Compounds over Ruthenium Catalysts Based on Sulfonated Porous Aromatic Frameworks

Bazhenova,

Kulikov,

Makeeva

et al. 2023

Polymers

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Bifunctional catalysts are a major type of heterogeneous catalytic systems that have been widely investigated for biomass upgrading. In this work, Ru-catalysts based on sulfonated porous aromatic frameworks (PAFs) were used in the hydrodeoxygenation (HDO) of lignin-derived compounds: guaiacol, veratrole, and catechol. The relationship between the activity of metal nanoparticles and the content of acid sites in synthesized catalysts was studied. Herein, their synergy was demonstrated in the Ru-PAF-30-SO3H/5-COD catalyst. The results revealed that this catalytic system promoted partial hydrogenation of lignin-based compounds to ketones without any further transformations. The design of the Ru-PAF-30-SO3H/5-COD catalytic system opens a promising route to the selective conversion of lignin model compounds to cyclohexanone.

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“…1 In addition to reducing the use of fossil fuels, converting CO 2 into highvalue-added products (e.g., CO, CH 4 , CH 3 OH, CH 3 CH 2 OH) can not only effectively reduce greenhouse gases but also bring about great economic benefits. 2 Nowadays, there have been various ways to realize CO 2 conversion, mainly including thermal catalysis, 3,4 photocatalysis, 5,6 electrocatalysis, 7,8 and plasma catalysis. 9,10 Among them, C�O bond activation is one of the greatest technical challenges, 11 because a high thermodynamic barrier of 805 kJ/mol (C�O bond energy) has to be overcome for CO 2 dissociation reaction (CO 2 → CO + 1/2O 2 , ΔH 298K = 280 kJ/mol).…”

Section: Introductionmentioning

confidence: 99%

Enhancing CO₂ Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

Xia,

Wu,

et al. 2023

Energy Fuels

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As one of the most consensus goals around the world, reduction of carbon emissions has attracted huge attention from academic and industry communities for developing renewable energy sources and carbon capture techniques. Nonthermal equilibrium plasma catalysis has been proven to be a very promising way for CO 2 conversion into high-value-added products; however, the synergistic catalytic mechanism between the plasma and various catalysts remains a challenge. In this work, we designed a reactor of atmospheric pressure glow discharge (APGD) plasma jet coupled with V 2 O 5 /TiO 2 nanocomposite catalysts and studied the influence of V 2 O 5 mass fraction, catalyst pretreatment, and reaction plasma parameters on the CO 2 dissociation performance. Results showed that the designed reactor could introduce high-density plasma to the downstream area and maintain lower gas temperature, allowing the collaboration between APGD and the V 2 O 5 /TiO 2 catalyst. The XRD analysis indicated that the solid solution phase TiVO 4 could be formed in catalysts by V 2 O 5 doping and reach a maximal content at a mass fraction of 30%, which determined the most excellent redox ability of the catalyst. The pretreatment of the as-prepared catalyst by Ar dielectric barrier discharge (DBD) plasma increased the oxygen vacancy density of the catalyst, thereby raising the conversion rate by 18.43%. Moreover, the transition regime between laminar and turbulent states was found to be the optimal configuration for CO 2 dissociation. The reaction pathway was proposed for CO 2 dissociation synergistically catalyzed by an APGD plasma jet and V 2 O 5 / TiO 2 . Ultimately, the maximum conversion of 14.88% and energy efficiency of 40.45% were simultaneously achieved, which were superior to the results of most atmospheric pressure plasmas. This work opens an avenue to develop plasma technology for sustainable CO 2 utilization.

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Supported Ru nanocatalyst over phosphotungstate intercalated Zn-Al layered double hydroxide derived mixed metal oxides for efficient hydrodeoxygenation of guaiacol

Cited by 15 publications

References 63 publications

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

Hydrodeoxygenation of Lignin-Based Compounds over Ruthenium Catalysts Based on Sulfonated Porous Aromatic Frameworks

Enhancing CO₂ Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

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Supported Ru nanocatalyst over phosphotungstate intercalated Zn-Al layered double hydroxide derived mixed metal oxides for efficient hydrodeoxygenation of guaiacol

Cited by 15 publications

References 63 publications

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

Hydrodeoxygenation of Lignin-Based Compounds over Ruthenium Catalysts Based on Sulfonated Porous Aromatic Frameworks

Enhancing CO2 Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts

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Enhancing CO₂ Conversion via Atmospheric Pressure Glow Discharge Plasma Jet Coupled with Catalysts