Plasma induced liquid-phase synthesis of Ce/Mo metal oxides as photocatalysts

Tao, Xumei; Zheng, Kangkang; Huang, Liang

doi:10.1016/j.cplett.2021.138903

Cited by 6 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…− species. 55 More importantly, the O 2− desorption peaks (>250 °C) of MoO 3 /CeO 2 are also much higher than those of pure MoO 3 and CeO 2 , indicating that CeO 2 promotes the desorption of lattice oxygen on MoO 3 . According to previous work, CeO 2 with its powerful oxygenstorage capacity can migrate reactive oxygen species to adjacent MoO 3 and further regulate catalytic performance.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

“…Except for MoO 3 , both CeO 2 and MoO 3 /CeO 2 show peaks in the temperature range of 80–200, 250–400, and 450–550 °C, which are assigned to the release of chemisorbed oxygen species (O 2 – ) on the oxygen vacancies and decomposition of surface and bulk lattice oxygen (O 2– ), respectively. − Consistent with the XPS results, MoO 3 does not show any desorption peaks, and MoO 3 /CeO 2 exhibits a more abundant desorption amount of O 2 – species than CeO 2 . Since the introduction of MoO 3 creates more defect structures, the desorption peak associated with oxygen vacancies is strengthened and shifted to a lower temperature range (80 vs 110 °C), revealing the enhanced activation ability of O 2 and desorption ability of O 2 – species . More importantly, the O 2– desorption peaks (>250 °C) of MoO 3 /CeO 2 are also much higher than those of pure MoO 3 and CeO 2 , indicating that CeO 2 promotes the desorption of lattice oxygen on MoO 3 .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Controlled Synthesis of Dibenzenetriol and Diquinone from 1,2,4-Benzenetriol by Catalytic Aerobic Oxidation

Zhong

Cai

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

The preparation of diphenol and diquinone from biomass is significant for sustainable fine chemicals, which are currently developed from fossil-based or ligninderived phenols. Herein, a class of transition-metal oxides (CeO 2 , MoO 3 , and MoO 3 / CeO 2 ) with different O 2 activation abilities and basicity was prepared for the catalytic aerobic oxidation of 1,2,4-benzenetriol to dibenzenetriol and diquinone. CeO 2 with a moderate O 2 activation ability and basicity shows a 98% yield of dibenzenetriol upon the oxidative coupling reaction, whereas MoO 3 /CeO 2 with a strong O 2 activation ability and basicity results in a highly efficient synthesis of diquinone with a 79% yield via tandem oxidative coupling and further oxidation reactions. Meanwhile, these metal oxides exhibit stable recycling performance and reusability. This work can lead to the facile and efficient synthesis of dibenzenetriol and diquinone, which is unattainable with the previous ligninbased route.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Controlled Synthesis of Dibenzenetriol and Diquinone from 1,2,4-Benzenetriol by Catalytic Aerobic Oxidation

Zhong

Cai

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…For cerium materials, during the redox reaction between Ce 3+ and Ce 4+ , electron transfer occurred, increasing the number of oxygen vacancies, which improved the catalytic performance. Hence, cerium molybdenum oxides have attracted attention in the field of catalysis due to their excellent performance [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Ce2(MoO4)3 synthesized with oleylamine and oleic acid as additives for photocatalysis: effect of preparation method

Huang

Kong

Chang

et al. 2022

Photochem Photobiol Sci

Self Cite

View full text Add to dashboard Cite

Ce 2 (MoO 4 ) 3 was prepared using dielectric barrier discharge (DBD) plasma method, co-precipitation method and hydrothermal method, respectively, with water/ethanol (W/O) as solvent, oleylamine (OAm) and oleic acid (OAc) as additives. Preparation method showed significant influence on the morphological and structural properties, as well as photocatalytic performance. Ce 2 (MoO 4 ) 3 synthesized with DBD plasma (MO-P) was mainly flowerlike nanosheets, which were beneficial to promoting electron transfer and providing more space for catalytic activity. Also, MO-P samples exhibited more oxygen vacancies, which were conducive to the photocatalytic performance. What's more, MO-P showed lower PL intensity and narrow energygap, which implied a slow photoelectron-hole pair recombination rate and an increased electron transfer rate. The degradation rate of methyl orange (50 mg/L) could achieve 98% within 12 min with 0.5 g/L MO-P. Hydroxyl radicals (•OH) and superoxide radicals (•O 2 − ) played a major effect. Plasma synthesis method exhibited potential application prospect in photocatalysts preparation.

show abstract

Mo(S,O)/(Ce,Mo)(S,O) sulfo-oxide with heterovalent metal states for efficient visible-light-driven hydrogen evolution and pollutant reduction via in-situ generated protons

Abdeta

Kuo

et al. 2023

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Plasma induced liquid-phase synthesis of Ce/Mo metal oxides as photocatalysts

Cited by 6 publications

References 50 publications

Controlled Synthesis of Dibenzenetriol and Diquinone from 1,2,4-Benzenetriol by Catalytic Aerobic Oxidation

Controlled Synthesis of Dibenzenetriol and Diquinone from 1,2,4-Benzenetriol by Catalytic Aerobic Oxidation

Ce2(MoO4)3 synthesized with oleylamine and oleic acid as additives for photocatalysis: effect of preparation method

Mo(S,O)/(Ce,Mo)(S,O) sulfo-oxide with heterovalent metal states for efficient visible-light-driven hydrogen evolution and pollutant reduction via in-situ generated protons

Contact Info

Product

Resources

About