Extremely efficient full solar spectrum light driven thermocatalytic activity for the oxidation of VOCs on OMS-2 nanorod catalyst

“…Volatile organic compounds (VOCs) are one of the major con-tributors to air pollution, and harmful to human health and the en-vironment due to the formation of photochemical smog, secondary aerosols and potential toxicity including carcinogenicity [1]. The most common VOCs are halogenated compounds, such as aldehydes, alco-hols, ketones and aromatic compounds, which can be divided into outdoor sources and indoor sources [2,3].…”

Section: Introductionmentioning

confidence: 99%

Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism

Jiang

Dummer

et al. 2018

Applied Catalysis B: Environmental

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Hierarchically micro-mesostructured Pt/K-Al-SiO2 catalysts with regular nanorod (Pt/KA-NRS) and spherical nanoflower-like (Pt/KA-SNFS) morphologies were prepared. The existence of Al atoms generates Brønsted acid sites and reduces silanol groups over the supports, promoting the dispersion of Pt nanoparticles and stability of catalysts. Potassium atoms balance the negative charge of supports and enhance O2 mobility. The Pt/KA-NRS catalysts exhibit unexceptionable low temperature activity, CO2 selectivity, and stability for MEK oxidation. Amongst, 0.27 wt.% Pt/KA-NRS completely converts MEK at just 170 °C (activation energy as low as 37.22 kJ• % mol −1), more than 100 °C lower than other typical Pt/Pd supported catalysts reported in the literature. Diacetyl and 2,3-butandiol are the main intermediates during MEK activation, which convert into H2O and CO2 through aldehydes and acids. The excellent catalytic activity of Pt/KA-NRS is ascribed to their regular morphology, high Pt 0 content and dispersion, excellent MEK adsorption capacity and superior O2/CO2 desorption capability under low temperature.

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“…[37,38] The cryptomelanetype octahedral molecular sieve (OMS-2) nanorod catalysts with different concentrationso fo xygen vacancies exhibit strong absorption across the full solar spectrum and have shown good resultsf or thermo-photocatalytic application. [39] By combining the photo-and thermocatalytic potentials of the composite materials (Mg-doped and Ce-doped OMS-2)aremarkable light driven thermocatalytic process was developed. In particular, Mg doping of the ordered structure leads to an enhancement of the lattice oxygen activity upon UV/Vis/IR irradiation.…”

Section: Air Treatmentmentioning

confidence: 99%

Thermo‐Photocatalysis: Environmental and Energy Applications

et al. 2019

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Catalysis is an integral part of a majority of chemical operations focused on the generation of value‐added chemicals or fuels. Similarly, the extensive use of fossil‐derived fuels and chemicals has led to deterioration of the environment. Catalysis currently plays a key role in mitigating such effects. Thermal catalysis and photocatalysis are two well‐known catalytic approaches that were applied in both energy and environmental fields. Thermo‐photocatalysis can be understood as a synergistic effect of the two catalytic processes with key importance in the use of solar energy as thermal and light source. This Review provides an update on relevant contributions about thermo‐photocatalytic systems for environmental and energy applications. The reported activity data are compared with the conventional photocatalytic approach and the base of the photothermal effect is analyzed. Some of the systems based on the positive aspects of thermo‐ and photocatalysis could be the answer to the energy and environmental crisis when taking into account the outstanding results with regard to chemical efficiency and energy saving.

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Extremely efficient full solar spectrum light driven thermocatalytic activity for the oxidation of VOCs on OMS-2 nanorod catalyst

Cited by 115 publications

References 44 publications

A new strategy for utilization of NIR from solar energy—Promotion effect generated from photothermal effect of Fe3O4@SiO2 for photocatalytic oxidation of NO

A new strategy for utilization of NIR from solar energy—Promotion effect generated from photothermal effect of Fe3O4@SiO2 for photocatalytic oxidation of NO

Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism

Thermo‐Photocatalysis: Environmental and Energy Applications

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