Enhancing the dynamic electron transfer of Au species on wormhole-like TS-1 for boosting propene epoxidation performance with H2 and O2

Dong, Lin; Zheng, Xiuhui; Feng, Xiang; Sheng, Nan; Song, Zhaoning; Liu, Yibin; Chen, Xiaobo; Cai, Zhenping; Chen, De; Yang, Chaohe

doi:10.1016/j.gee.2020.10.021

Cited by 35 publications

(16 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is worth noting that nanomaterials with low crystallinity have been found to outperform their crystalline counterparts in electrocatalytic water splitting [24–27] . Firstly, they always possess small particle size and large surface area, which will expose more active sites for catalytic reaction [28] .…”

Section: Introductionmentioning

confidence: 99%

Constructing RuCoO_x/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Tuo

Liu

Chen

et al. 2021

Chemistry An Asian Journal

View full text Add to dashboard Cite

Electrocatalysts play a pivotal role in accelerating the sluggish electrochemical water splitting reaction. Herein, a Ru−Co oxides and carbon nitrides hybrid (RuCoOx/NC) electrocatalyst was constructed by employing ZIF‐9 to disperse Ru precursor and deliberately regulating the calcination temperature. The moderate calcination temperature results in the RuCoOx nanocomposites with small particle size and low crystallinity as well as the co‐existence of multi‐valence metal compounds, thus boosting the amount and species of active sites. Moreover, the strong interactions between Co and Ru species induce the electron transfer from Co to Ru, thus enhancing the adsorption of anion intermediates on the electron‐deficient Co species and the proton capturing capacity of electron‐sufficient Ru species. As a result, the optimized RuCoOx/NC‐350 catalyst behaved good electrocatalytic activities with 73 and 210 mV overpotential to achieve 10 mA cm−2 for HER and OER, respectively. Remarkably, it showed good durability by holding at 100 mA cm−2 for 100 h in HER and 50 mA cm−2 for 24 h in OER with small activity decline. This study may shed new light on the rational construction of highly efficient Ru‐based catalysts for electrochemical water splitting.

show abstract

Section: Introductionmentioning

confidence: 99%

Constructing RuCoO_x/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Tuo

Liu

Chen

et al. 2021

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“…3d, which are attributed to typical [Si(OSi) 4 ](Q4) species and the (SiO) 3 SiOH(Q3) species functionalized with hydroxyl groups, respectively. 45–49 The Q3 signal in the spectrum is usually considered to be due to the existence of lattice defects, mainly in the form of the surface silicon hydroxyl group and/or the nest of silanol groups. The reduction of surface hydroxyl groups indicates better hydrophobicity, which is conducive to the desorption of PO and suppresses the occurrence of side reactions, for example, the production of propylene glycol from the acid hydrolysis of PO.…”

Section: Resultsmentioning

confidence: 99%

Au supported defect free TS-1 for enhanced performance of gas phase propylene epoxidation with H₂ and O₂

Qiu

et al. 2022

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

“…For the CoO x –Co(111) model, two oxygen atoms were placed on the Co(111) surface to represent the CoO x structure. The Perdew–Burke–Ernzerhof (PBE) exchange–correlation functional was selected based on the generalized gradient approximation (GGA). , TS’s DFT-D2 was used to consider the inclusion of vdW interaction . A 3 × 3 × 1 k -point generated by the Monkhorst–Pack method was used to calculate the integration of the Brillouin zone, and spin-polarization was also considered for calculation.…”

Section: Methodsmentioning

confidence: 99%

Octadecanol Production from Methyl Stearate by Catalytic Transfer Hydrogenation over Synergistic Co/HAP Catalysts

et al. 2021

Self Cite

View full text Add to dashboard Cite

As a potential alternative for fossil feedstocks, renewable natural oils are highly desirable for producing fuels or high added-value chemicals. Herein, catalytic transfer hydrogenation of methyl stearate to octadecanol using methanol and water as hydrogen donors was investigated over Co/ hydroxyapatite (HAP) catalysts synthesized by distinct methods. Multicharacterizations revealed that the strong interaction between Co and the HAP support of the Co/HAP catalysts could enhance the electron transferability, resulting in the excellent methyl stearate conversion (94.8%) and octadecanol selectivity (67.7%) at 290 °C in 5 h. The characterizations and density functional theory (DFT) calculations confirmed that the combined Co 0 /Co δ+ active sites could synergistically boost the generation of H 2 and the hydrogenation of methyl stearate in the methanol/water system. In addition, the effects of various reaction conditions (e.g., the amount of methanol, reaction temperature, reaction time, and catalyst loading) were investigated in detail to understand the plausible reaction pathways. The results may have guiding significance on designing catalysts for efficient conversion of fatty acid methyl esters.

show abstract

Enhancing the dynamic electron transfer of Au species on wormhole-like TS-1 for boosting propene epoxidation performance with H2 and O2

Cited by 35 publications

References 68 publications

Constructing RuCoO_x/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Constructing RuCoO_x/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Au supported defect free TS-1 for enhanced performance of gas phase propylene epoxidation with H₂ and O₂

Octadecanol Production from Methyl Stearate by Catalytic Transfer Hydrogenation over Synergistic Co/HAP Catalysts

Contact Info

Product

Resources

About

Enhancing the dynamic electron transfer of Au species on wormhole-like TS-1 for boosting propene epoxidation performance with H2 and O2

Cited by 35 publications

References 68 publications

Constructing RuCoOx/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Constructing RuCoOx/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Au supported defect free TS-1 for enhanced performance of gas phase propylene epoxidation with H2 and O2

Octadecanol Production from Methyl Stearate by Catalytic Transfer Hydrogenation over Synergistic Co/HAP Catalysts

Contact Info

Product

Resources

About

Constructing RuCoO_x/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Constructing RuCoO_x/NC Nanosheets with Low Crystallinity within ZIF‐9 as Bifunctional Catalysts for Highly Efficient Overall Water Splitting

Au supported defect free TS-1 for enhanced performance of gas phase propylene epoxidation with H₂ and O₂