Atomic‐Scale Insights into the Low‐Temperature Oxidation of Methanol over a Single‐Atom Pt1‐Co3O4 Catalyst

Jiang, Zeyu; Xiao, Feng; Deng, Jian; He, Chi; Douthwaite, Mark; Yu, Yanke; Liu, Jian; Zhang, Hao; Zhang, Zhao

doi:10.1002/adfm.201902041

Cited by 128 publications

(62 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In light of growing concerns associated with the emission of volatile or-ganic compounds (VOCs) [6][7][8][9], several recent publications have de-monstrated the potential of using SACs for the low-temperature de-struction of VOCs [10,11]. We too, recently demonstrated that a Pt1-Co3O4 SAC was exceptionally active for the destruction of oxygenated VOCs [12]. Despite the progress made, a great challenge remains; to develop thermally and chemically stable SACs, which required to be used in large scale traditional thermal reactions, such as catalytic combustion of hydrocarbons, water-gas shift and methane mineraliza-tion [13,14].…”

Section: Introductionmentioning

confidence: 99%

Stabilizing platinum atoms on CeO2 oxygen vacancies by metal-support interaction induced interface distortion: Mechanism and application

Jiang

Jing

Xiao

et al. 2020

Applied Catalysis B: Environmental

Self Cite

137

View full text Add to dashboard Cite

Exploring thermally robust single atom catalysts (SACs) is of great significance. Here, we develop a universal strategy for stabilizing Pt atoms on the mono-oxygen vacancies of CeO2 with diverse exposed facets. The sta-bilization mechanism was proposed that the formed Pt-O-Ce interface will be taken into distortion spontaneously to keep thermodynamics stable through strong metal-support interactions. The highest degree of Pt-O-Ce dis-tortion is achieved over Pt1-CeO2{100} material, which exhibits exceptional efficiency and thermal stability for oxygenated hydrocarbon removal. The enhanced adsorption capacity of O2 and methanol confirmed in the distortion interface is seen as another crucial reason for improving the stability of SACs. Methanol oxidation on Pt1-CeO2{100} obeys the L-H mechanism under relatively low temperature and then goes through to the MVK mechanism with temperature increasing. We believe that these results would bring new opportunities in the fabrication of SACs and applications of them in thermal reactions.

show abstract

Section: Introductionmentioning

confidence: 99%

Stabilizing platinum atoms on CeO2 oxygen vacancies by metal-support interaction induced interface distortion: Mechanism and application

Jiang

Jing

Xiao

et al. 2020

Applied Catalysis B: Environmental

Self Cite

137

View full text Add to dashboard Cite

show abstract

“…Apart from the Fe oxides, the cation vacancies on other oxides have also been exploited for anchoring the single metal atoms, including the reducible oxides (e.g., CeO 2 , TiO 2 ) and the nonreducible oxides (e.g., Al 2 O 3 , NiO, ZnO, and MgO). [92][93][94] Combining theory and experiment, Neyman and co-workers demonstrated that the most stable sites for the surface Pt 2+ ions are the square O 4 nanopockets on the {100} facets, on which each Pt atom is coordinated by four O atoms. [86] More importantly, the isolated Pt 2+ species in the square-planar structure are thermally stable without reduction, sintering and bulk diffusion at elevated temperature.…”

Section: Surface Defects Engineeringmentioning

confidence: 99%

Structural Regulation and Support Coupling Effect of Single‐Atom Catalysts for Heterogeneous Catalysis

Liu

Ding

et al. 2020

Advanced Energy Materials

202

141

View full text Add to dashboard Cite

Single atom catalysts (SACs) that integrate the merits of homogeneous and heterogeneous catalysts have been attracting considerable attention in recent years. The individual metal atoms of SACs can be stabilized on supports through various unsaturated chemical sites or space confinement for achieving the maximized atom utilization efficiency. Aside from the development of strategies for preparing high loading and high purity SACs, another key challenge in this field is precisely manipulating the geometric and electronic structure of catalytically active single metal sites, thus rendering the catalysts exceptionally reactive, selective, and stabile compared to their bulk counterparts. This review summarizes recent advancements in SACs for heterogeneous catalysis from the perspective of local structural regulation and the synergistic coupling effect between metal species and supports. Special emphasis is placed on the elucidation of the catalytic structure‐performance relationship in terms of coordination environment, valence state and metal‐support interactions by advanced characterization and theoretical studies. Select in situ or operando characterization techniques for tracking the SACs’ structure evolution under realistic conditions are highlighted. Finally, the challenges and opportunities are discussed to offer insight into the rational design of more intriguing SACs with high activity and distinct chemoselectivity.

show abstract

“…Jiang et al [123] prepared a 0.02 wt. % Pt 1 /Co 3 O 4 SAC that consisted of isolated single Pt atoms anchored to Co 3 O 4 (111) planes by occupying positions on the Co 2 + .…”

Section: Sacs For Oxidation Of Oxygenated Hcsmentioning

confidence: 99%

Single‐atom Automobile Exhaust Catalysts

Zhang

Fan

et al. 2020

ChemNanoMat

View full text Add to dashboard Cite

Single-atom catalysts (SACs) with isolated metal centers are attracting great research interest because of their maximized metal utilization rates and unique structures. In the last decade, significant efforts have been made to design highly efficient and cost-effective SACs with applications in automobile exhaust aftertreatment. SACs have not only demonstrated their high potential for improving the catalytic performance of current automobile exhaust catalysts but also provided an ideal platform for understanding the origins of catalyst reactivity. In this review, we summarize the general strategies for promoting the reactivity of metal SACs while maintaining their thermal stability during exhaust-abatement-related reactions. Highlights are provided on wellperformed SACs for CO oxidation, unburnt hydrocarbon (HC) oxidation, and the selective catalytic reduction of NO x. The reaction mechanism and structure-performance relationship of SAC during these reactions are also discussed. Finally, perspectives are given on the trending research fields for designing more efficient single-atom automobile exhaust catalysts in the future.

show abstract

Atomic‐Scale Insights into the Low‐Temperature Oxidation of Methanol over a Single‐Atom Pt₁‐Co₃O₄ Catalyst

Cited by 128 publications

References 49 publications

Stabilizing platinum atoms on CeO2 oxygen vacancies by metal-support interaction induced interface distortion: Mechanism and application

Stabilizing platinum atoms on CeO2 oxygen vacancies by metal-support interaction induced interface distortion: Mechanism and application

Structural Regulation and Support Coupling Effect of Single‐Atom Catalysts for Heterogeneous Catalysis

Single‐atom Automobile Exhaust Catalysts

Contact Info

Product

Resources

About