Insight into Au/ZnO catalyzed aerobic benzyl alcohol oxidation by modulation–excitation attenuated total reflection IR spectroscopy

Waheed, Ammara; Cao, Changhai; Zhang, Yifei; Zheng, Kai; Gao, Li

doi:10.1039/d2nj00176d

Cited by 7 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…−1 h −1 was obtained over Au/TiO 2 −C 3 N 4 catalysts in the absence of light irradiation, and TiO 2 −C 3 N 4 was inert under identical reaction conditions. These results suggested that benzyl alcohol can also be activated and converted over Au particles by hot electrons even at ambient temperature, 44,45 and hot electrons contribute approximately 20% to benzyl alcohol conversion. Finally, the Au/TiO 2 −C 3 N 4 ternary composites exhibited good durability in the photocatalytic oxidation of benzyl alcohol as the conversion rates were not significantly changed after the fifth run as delineated in Figure 5c.…”

Section: Investigation Of the Ba Photooxidationmentioning

confidence: 91%

Plasmonic Au Nanoparticle of a Au/TiO₂–C₃N₄ Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

Shi,

Zhang,

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Plasmonic Au nanoparticles (NPs) employing localized surface plasmon resonance excitation have exhibited superior visible light absorption for many organic transformations. In this work, we prepared a ternary composite catalyst comprising plasmonic Au NPs and a 2D/2D TiO 2 −C 3 N 4 heterojunction via a photoreduction method of chloroauric acid in the presence of TiO 2 −C 3 N 4 . The introduction of plasmonic nanogold particles embedded onto the TiO 2 surface of the TiO 2 −C 3 N 4 heterojunction can significantly improve the photocatalytic performance during photooxidation of benzyl alcohol to benzaldehyde under mild conditions (1 bar air, white LED irradiation at ambient temperature). The productivity over Au/TiO 2 −C 3 N 4 (0.25 mmol reacted BA g cat.−1 h −1

show abstract

Section: Investigation Of the Ba Photooxidationmentioning

confidence: 91%

Plasmonic Au Nanoparticle of a Au/TiO₂–C₃N₄ Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

Shi,

Zhang,

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…A reactive distillation column was used to assess the catalytic effectiveness. While the Zr 1−x Al x O y catalysts offered outstanding TTF efficiency for the synthesis of propylene carbonate (PC) and MeOH, the typical amphoteric compounds, including ZrO 2 , Al 2 O 3 and ZrO 2 + Al 2 O 3 , provided low conversion and selectivity for the formation of DMC [ 5 , 36 ]. The Zr 0.5 Al 0.5 O y catalyst had the highest PC conversion of 98.1% at 99.9% DMC selectivity among the catalysts.…”

Section: Developed Methods For Green Dmc Synthesismentioning

confidence: 99%

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

et al. 2022

Self Cite

View full text Add to dashboard Cite

Dimethyl carbonate is a generally used chemical substance which is environmentally sustainable in nature and used in a range of industrial applications as intermediate. Although various methods, including methanol phosgenation, transesterification and oxidative carbonylation of methanol, have been developed for large-scale industrial production of DMC, they are expensive, unsafe and use noxious raw materials. Green production of DMC from CO2 and methanol is the most appropriate and eco-friendly method. Numerous catalysts were studied and tested in this regard. The issues of low yield and difficulty in tests have not been resolved fundamentally, which is caused by the inherent problems of the synthetic pathway and limitations imposed by thermodynamics. Electron-assisted activation of CO2 and membrane reactors which can separate products in real-time giving a maximum yield of DMC are also being used in the quest to find more effective production method. In this review paper, we deeply addressed green production methods of DMC using Zr/Ce/Cu-based nanocomposites as catalysts. Moreover, the relationship between the structure and activity of catalysts, catalytic mechanisms, molecular activation and active sites identification of catalysts are also discussed.

show abstract

“…However, the detailed mechanism is still unable to reveal this. (5) Via the characterization of ATR-IR spectra to dig out the possible reaction intermediates [63], we have clearly mapped out the whole conversion pathway and worked out the controversy in this photocatalysis.…”

Section: Conclusion Challenges and Future Perspectivementioning

confidence: 99%

Recent Advances in Aerobic Photo-Oxidation over Small-Sized IB Metal Nanoparticles

2022

Self Cite

View full text Add to dashboard Cite

Aerobic photo-oxidation is a kind of green catalytic process that give valuable chemicals because of its mild reaction conditions and high product selectivity. Recently, small-sized IB metal nanoparticles (NPs; e.g., Cu, Ag, and Au, sized 1–3 nm) upon the surface of titanium oxide show excellent photocatalytic performance. The introduction of IB metal NPs can enhance the separation of photo-generated holes/electrons during photo-oxidations. In this account, we summarize the recent progress of small-sized IB metal NPs catalyzed by aerobic photo-oxidations, including the conversion of methanol, ethanol, sulfide, and benzylamine. More importantly, the structure–property correlations at the atomic level are detailed and discussed, e.g., the insights into the activation of oxygen and the identification of catalytic active sites. Future investigations are needed to carry out and reveal the catalytic mechanisms and conversion pathways.

show abstract

Insight into Au/ZnO catalyzed aerobic benzyl alcohol oxidation by modulation–excitation attenuated total reflection IR spectroscopy

Abstract: The chemisorbed or dissociated oxygen species is associated with the catalytic activity in alcohol oxidation catalyzed by Au/ZnO catalysts.

Cited by 7 publications

References 38 publications

Plasmonic Au Nanoparticle of a Au/TiO₂–C₃N₄ Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

Plasmonic Au Nanoparticle of a Au/TiO₂–C₃N₄ Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

Recent Advances in Aerobic Photo-Oxidation over Small-Sized IB Metal Nanoparticles

Contact Info

Product

Resources

About

Insight into Au/ZnO catalyzed aerobic benzyl alcohol oxidation by modulation–excitation attenuated total reflection IR spectroscopy

Abstract: The chemisorbed or dissociated oxygen species is associated with the catalytic activity in alcohol oxidation catalyzed by Au/ZnO catalysts.

Cited by 7 publications

References 38 publications

Plasmonic Au Nanoparticle of a Au/TiO2–C3N4 Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

Plasmonic Au Nanoparticle of a Au/TiO2–C3N4 Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

Recent Advances in Aerobic Photo-Oxidation over Small-Sized IB Metal Nanoparticles

Contact Info

Product

Resources

About

Plasmonic Au Nanoparticle of a Au/TiO₂–C₃N₄ Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light

Plasmonic Au Nanoparticle of a Au/TiO₂–C₃N₄ Heterojunction Boosts up Photooxidation of Benzyl Alcohol Using LED Light