Photocatalytic selective oxidation of benzene to phenol in water over layered double hydroxide: A thermodynamic and kinetic perspective

Li, Jiaxin; Xu, Yanqi; Ding, Zhongzhen; Mahadi, Abdul Hanif; Zhao, Yufei; Song, Yu‐Fei

doi:10.1016/j.cej.2020.124248

Cited by 91 publications

(44 citation statements)

References 56 publications

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“…This confirmed the photocatalytic activity effect of CeO 2 semiconductor oxide with tuneable NRs morphology for the oxidation of pinene to oxygenated compounds. The obtained photocatalytic activity of CeO 2 nanostructures for oxyfunctionalization of the pinene inert CÀ H bond is comparable to the other multicomponents catalysts such as Zn 2 Tilayered double hydroxide, [44] heterojunction CdWO 4 /Bi 2 WO 6 , [45] TiO 2 /Bi 2 MoO 6 , [46] CuO/Bi 2 MoO 6 , [47] and bimetallic AuÀ Pd/g-C 3 N 4 [48] reported previously in the activitation of aromatic hydrocarbons CÀ H for the selective introduction of oxygen molecule.…”

Section: Photocatalytic Oxidation Of α-Pinenementioning

confidence: 69%

Morphology Modulated Photocatalytic Activity of CeO₂ Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

2020

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Dedicated to the 60 th birthday of the late Professor Ben Zeelie The effective Ce 3 + /Ce 4 + redox and oxygen mobility of CeO 2 induced by tunable nanostructure morphology has attracted a great interest in photocatalytic organic synthesis. Herein, we report on the microwave-assisted synthesis of CeO 2 with nanoparticles (NPs), nanorods (NRs) and nanocubes (NCs) morphologies. The optical-electronic properties of the nanostructure CeO 2 catalysts varied relatively with the respective morphologies. Ce-NPs catalyst showed a significant blue shift while a red shift was observed for Ce-NCs and a slight blue shift for Ce-NRs. The Ce-NRs and Ce-NPs showed high charge recombination suppression, which was due to the formation of surface defects associated with dislocations, steps and oxygen vacancies (V o) as elucidated from the photolumiscence, X-ray photoelectron spectroscopy and electron paramagnetic resonance results. The surface oxygen defects populated with reactive superoxide oxygens of Ce-NRs and its high surface showed better photocatalytic activity for oxidation of alphapinene to pinene oxide, verbenol and verbenone as major products. A pinene conversion of 33.6 % to pinene oxide with the selectivity of 54.3 % was achieved with Ce-NRs. The effective photocatalytic activity of the Ce-NRs was attributed to its enhanced efficient charge recombination suppression and oxygen vacancies. Ce-NRs catalyst was recyclable without any significant loss of its initial photoactivity.

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Section: Photocatalytic Oxidation Of α-Pinenementioning

confidence: 69%

Morphology Modulated Photocatalytic Activity of CeO₂ Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

2020

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“…For example, a) a wet method has efficient purifying improvement for VOCs and PM, by combining with surfactant and oxidant [43]. b) The modified nano-structure catalyst was used in PCO device to improve photoreactivity [44][45]. c) The hydrophobic modified activated carbon [46] for complex cooking aerosol removal had obvious improvement.…”

Section: Suggestionmentioning

confidence: 99%

Performance of Cooking Aerosol Treatment in China Catering: a Review and Assessment

Zhao¹,

Chang²,

Zhang³

et al. 2021

Pol. J. Environ. Stud.

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Cooking aerosol generating from commercial kitchens was one of the most fine particulates contribution in China megacities air environment [1]. It was found that cooking process emitted high concentration of particulate matter (PM), mainly the inhalable particulate matter with aerodynamic diameter of 2.5 μm or less(PM 2.5 ) [2-3], which can be detrimental to human health, ranging from oxidative DNA damage to respiratory damage caused by exposure and inhalation [4], particularly. Growing evidence shows that the severe effects of PM are related to the size of the particulate. Thus, many countries are paying increasing attention to the emission of fine particulates [5].By the impact of dietary cultural influences, there were many delicate culinary skills in typical Chinese cuisines, such as stir-frying, deep-frying, quick-frying, crisp-frying, burning and roasting [6], especially in the commercial kitchens, which generate a mass of aerosol,

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“…[11][12] addition, such a rational design of photocatalytic LDHs-based materials resulted in the suitable bandgap, which allowed the possible excitation under visible light irradiation, provided a tunable redox potential for the further reduction reaction (CO 2 reduction, [13] N 2 fixation [14] etc.) or oxidation process (water oxidation, [15] oxidation of benzene [16] etc.). Very recently, Zhang and coworkers found that the selectivity of product could be well controlled by ZnM-LDH (M = Ti 4 + , Ga 3 + , Al 3 + , Fe 3 + , Co 3 + ) in CO 2 PR.…”

Section: Morphology and Compositionmentioning

confidence: 99%

“…Compared with the anatase TiO 2 , the lower energy of P2 peak in Zn 2 Ti-LDH indicated the existence of distorted TiO 6 ( Figure 4i). [16] The abundance of defects (e. g.:…”

Section: Electronic Structurementioning

confidence: 99%

“…[30] From the above examples, such electronic structure strategies are regarded as a promising method to enhance photocatalytic performance. [11,16,23] Figure 5. a) the schematic illustration and b) photocatalytic performance in CO 2 PR by LDH/MoS 2 , c) the schematic illustration of the synthesis process of g-C 3 N 4 /NiAl-LDHs, d) the proposed mechanism and photocatalytic performance of CO 2 PR by g-C 3 N 4 /NiAl-LDHs and e) the schematic illustration, morphology, proposed reaction mechanism and photocatalytic performance of CoZnAl-LDH/RGO/g-C 3 N 4 (LDH/RGO/CN).…”

Section: Electronic Structurementioning

confidence: 99%

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Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

Tan

Wang

Zhao

et al. 2020

Chemistry An Asian Journal

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Photoreduction of CO 2 into solar fuels is usually regarded as one of the promising solutions to overcome environmental pollution and the energy crisis. The main challenge in CO 2 photoreduction (CO 2 PR) is the low efficiency and poor selectivity. Layered double hydroxides (LDHs) are a class of 2D materials, consisting with M(OH) 6 octahedra in the host layers and intercalated anions. Owing to the tuneable composition, particle size, morphology, and virtue coordinatively unsaturated active sites, a series of efficient strategies (morphology control, heterostructure, defect control, etc.) in LDH-based photocatalysts have been efficiently developed to enhance the photocatalytic selectivity and activity for CO 2 PR. This review summarizes recent progress on the LDH-based photocatalysts for CO 2 PR. Al 3 + and transition metal elements, Fe 2 + , Co 2 + , Ni 2 + , Zn 2 + , Cr 3 + , Fe 3 + , etc.) in the laminate layers and A nÀ is the interlaminated anion (such as: NO 3 À , CO 3 2À and SO 4 2À , etc.) in the interlayer. [6b,c,7] It has been widely applied in photocatalyst in the past decades. [8] Ascribe to the tunable atomic structure, the bandgap of LDHs can be tuned from 2.0 eV to 5.4 eV by changing the composition of layer. [9] Moreover, the surface defects (such as: V M , metal vacancy and V OH , hydroxyl vacancy, etc.) as active sites in photocatalysis can be easily introduced by controlling the thickness and size of LDHs etc., thus promoting the efficiency of CO 2 PR. This review focuses on the recent development of the LDHs-based photocatalysts for CO 2 PR, and the corresponding progress of CO 2 PR has achieved great progress from the former CO 2 conversion rate of~1 μmol g À 1 h À 1 to recent 218130 μmol g À 1 h À 1 , and the desirable valuable-product also move from CO to CH 4 and methanol. The major strategies of promoting the CO 2 PR are discussed from different perspective from the morphology and composition, electronic structure, and defects structure for further understanding the relationship between the structure and activity.

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Photocatalytic selective oxidation of benzene to phenol in water over layered double hydroxide: A thermodynamic and kinetic perspective

Cited by 91 publications

References 56 publications

Morphology Modulated Photocatalytic Activity of CeO₂ Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

Morphology Modulated Photocatalytic Activity of CeO₂ Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

Performance of Cooking Aerosol Treatment in China Catering: a Review and Assessment

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂

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Photocatalytic selective oxidation of benzene to phenol in water over layered double hydroxide: A thermodynamic and kinetic perspective

Cited by 91 publications

References 56 publications

Morphology Modulated Photocatalytic Activity of CeO2 Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

Morphology Modulated Photocatalytic Activity of CeO2 Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

Performance of Cooking Aerosol Treatment in China Catering: a Review and Assessment

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO2

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Morphology Modulated Photocatalytic Activity of CeO₂ Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

Morphology Modulated Photocatalytic Activity of CeO₂ Nanostructures for Selective Oxidation of Biobased Alpha‐Pinene to Oxygenates

Recent Progress on Nanostructured Layered Double Hydroxides for Visible‐Light‐Induced Photoreduction of CO₂