Enhanced catalytic performance for toluene purification over Co3O4/MnO2 catalyst through the construction of different Co3O4-MnO2 interface

Liu, Wei; Xiang, Wenjie; Guan, Nana; Cui, Ruoyang; Cheng, Hao; Chen, Xi; Song, Zhongxian; Zhang, Yinmin

doi:10.1016/j.seppur.2021.119590

Cited by 43 publications

(7 citation statements)

References 73 publications

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“…It is worth mentioning that the release peak of CO 2 under wet condition was lower than that of dry condition, which could be ascribed to the competitive adsorption between toluene and water molecules. Generally, water and toluene will compete for adsorption on the active sites of the catalyst, which is also the reason why water is widely regarded as a typical poison component in catalytic VOC oxidation. ,, However, over this novel 9 wt % MnO x –CeO 2 nanocomposite catalyst, this competitive adsorption effect could be significantly minimized with the retaining capability of toluene adsorption under wet conditions, further keeping good activity in the deep oxidation of toluene.…”

Section: Resultsmentioning

confidence: 99%

Low-Temperature Oxidation of Toluene over MnO_x–CeO₂ Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Cao

Zhang

et al. 2022

Inorg. Chem.

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Synergistic interaction derived by a heterointerface structure on the surface of metal oxide catalysts has a crucial role in improving the catalytic activity. In this work, MnO x nanoparticles were dispersed on the surface of CeO2 nanorods to generate a MnO x –CeO2 heterointerface structure, and its effect on toluene adsorption and catalytic oxidation performance was investigated. The results show that MnO x is well dispersed on CeO2 nanorods, and the interaction of Mn–Ce significantly reduces the strength of the Ce–O bond and increases the conversion of Ce4+ to Ce3+, which further promotes the activation of oxygen. Compared to MnO x on SiO2 without synergistic interaction, the enhancement of toluene adsorption on this novel MnO x –CeO2 hetero-interface structure can also make a great contribution to the improvement of the catalytic reaction process. Among them, the synergistic effect of CeO2–MnO x could reduce the temperature of 90% toluene conversion to 210 °C (this value is 83 °C lower than that over pure CeO2 nanorods). In addition, the fresh MnO x –CeO2 catalyst not only shows excellent stability and moisture resistance but also retains highly low-temperature activity even after thermal aging at 750 °C for 100 h.

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Section: Resultsmentioning

confidence: 99%

Low-Temperature Oxidation of Toluene over MnO_x–CeO₂ Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Cao

Zhang

et al. 2022

Inorg. Chem.

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“…However, few examples have been reported in the study of bimetallic NiMnO as an e-NRR electrocatalyst. 28 In this study, we report that NiMnO x -3@CC threedimensional flower-like structures prepared by a simple hydrothermal method can act as highly active nonprecious metal e-NRR catalysts under ambient conditions. In 0.1 M Na 2 SO 4 , NiMnO x -3@CC exhibited an NH3 yield of 16 μg h −1 mg −1 NH 3 and FE of 19% (−0.1 V vs RHE), which are largely outperforming the monometallic oxide catalysts.…”

Section: Introductionmentioning

confidence: 90%

“…The introduction of Mn can effectively improve the catalytic performance of nickel-based catalysts. However, few examples have been reported in the study of bimetallic NiMnO as an e -NRR electrocatalyst …”

Section: Introductionmentioning

confidence: 99%

Flower-Like Ni–Mn Bimetallic Oxide-Based Nanosheets for Enhanced Electrocatalytic Nitrogen Reduction to Ammonia

Huang,

Xing,

Xiong

et al. 2023

Energy Fuels

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“…The peaks at 1560 and 1540 cm −1 can be ascribed to COOH* species. The peaks at 1455 and 1340 cm −1 relate to the O-H bending and C-O stretching vibration of COOH* groups, respectively [29,30]. It is observed that the peak of COOH* species becomes stronger with increasing light-irradiation time, indicating that the COOH* is one of the key intermediate species for CO 2 -to-CH 3 OH conversion [31].…”

Section: In-situ Driftsmentioning

confidence: 97%

Photothermal Catalytic Reduction of CO2 by Cobalt Silicate Heterojunction Constructed from Clay Minerals

Qin

Ge²,

Kong³

et al. 2022

Catalysts

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The coupled utilization of solar and thermal energy is considered an efficient way to improve the efficiency of CO2 reduction. Herein, palygorskite (Pal) clay is as a silicon source, while Co2+ is introduced to prepare two-dimensional Co2SiO4 nanosheets, and the excess of Co2+ leads to the growth of Co3O4 on the surface of Co2SiO4 to obtain an S-scheme Co2SiO4/Co3O4−x heterojunction, which facilitates the charge transfer and maintains higher redox potentials. Benefiting from black color and a narrow band gap, the cobalt oxide on the surface can increase the light absorption and produce a local photothermal effect. Under proper thermal activation conditions, the photoelectrons captured by the abundant oxygen vacancies can obtain a secondary leap to the semiconductor conduction band (CB), suppressing the recombination of electron-hole pairs, thus favoring the electron transfer on Co2SiO4/Co3O4−x. The composites not only have abundant oxygen vacancies, but also have a large specific surface area for the adsorption and activation of CO2. The yields of CH3OH on Co2SiO4/Co3O4−5% reach as high as 48.9 μmol·g−1·h−1 under simulated sunlight irradiation. In situ DRIFTS is used to explore the photocatalytic reduction CO2 mechanism. It is found that the thermal effect facilitates the generation of the key intermediate COOH* species. This work provides a new strategy for photothermal catalytic CO2 reduction by taking advantage of natural clay and solar energy.

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Enhanced catalytic performance for toluene purification over Co3O4/MnO2 catalyst through the construction of different Co3O4-MnO2 interface

Cited by 43 publications

References 73 publications

Low-Temperature Oxidation of Toluene over MnO_x–CeO₂ Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Low-Temperature Oxidation of Toluene over MnO_x–CeO₂ Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Flower-Like Ni–Mn Bimetallic Oxide-Based Nanosheets for Enhanced Electrocatalytic Nitrogen Reduction to Ammonia

Photothermal Catalytic Reduction of CO2 by Cobalt Silicate Heterojunction Constructed from Clay Minerals

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Enhanced catalytic performance for toluene purification over Co3O4/MnO2 catalyst through the construction of different Co3O4-MnO2 interface

Cited by 43 publications

References 73 publications

Low-Temperature Oxidation of Toluene over MnOx–CeO2 Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Low-Temperature Oxidation of Toluene over MnOx–CeO2 Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Flower-Like Ni–Mn Bimetallic Oxide-Based Nanosheets for Enhanced Electrocatalytic Nitrogen Reduction to Ammonia

Photothermal Catalytic Reduction of CO2 by Cobalt Silicate Heterojunction Constructed from Clay Minerals

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Product

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Low-Temperature Oxidation of Toluene over MnO_x–CeO₂ Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation

Low-Temperature Oxidation of Toluene over MnO_x–CeO₂ Nanorod Composites with High Sinter Resistance: Dual Effect of Synergistic Interaction on Hydrocarbon Adsorption and Oxygen Activation