Quenching-Induced Defect-Rich Platinum/Metal Oxide Catalysts Promote Catalytic Oxidation

Article Chemistry, Physical

Confinement and synergy effect of bimetallic Pt-Mn nanoparticles encapsulated in ZSM-5 zeolite with superior performance for acetone catalytic oxidation

Lizhe Yang et al.

Summary: A zeolite-confined PtMn bimetal catalyst was synthesized using a ligand-assisted hydrothermal method, exhibiting extraordinary catalytic activity and durability for VOCs removal, holding promising industrial prospect.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Chemistry, Multidisciplinary

Pd/Fe2O3 with Electronic Coupling Single-Site Pd-Fe Pair Sites for Low-Temperature Semihydrogenation of Alkynes

Ruijie Gao et al.

Summary: The study successfully constructed a highly active and stable single palladium-iron catalyst, achieving high activity and selectivity for alkyne hydrogenation and exhibiting excellent performance for purifying acetylene from ethylene streams.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Physical

Engineering Cobalt Oxide with Coexisting Cobalt Defects and Oxygen Vacancies for Enhanced Catalytic Oxidation of Toluene

Yifei Li et al.

Summary: Coexistence of cobalt defects and oxygen vacancies has a significant effect on the performance of catalysts, improving the catalytic activity for toluene oxidation. A Co3-xO4-y catalyst with both cobalt defects and oxygen vacancies was synthesized, achieving over 90% toluene conversion under light illumination for 10 minutes at a temperature of around 180 degrees Celsius. Cobalt defects promote the formation of oxygen vacancies, which accelerate the conversion of intermediates and promote the degradation of toluene.

ACS CATALYSIS (2022)

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Article Chemistry, Multidisciplinary

Ultralow-Loading Pt/Zn Hybrid Cluster in Zeolite HZSM-5 for Efficient Dehydroaromatization

Genwei Chen et al.

Summary: In this study, ultralow-loading (0.001-0.05 wt %) Pt-and Zn-functionalized HZSM-5 catalysts were prepared and found to exhibit high activity and stability for light alkane dehydroaromatization. The bimetallic Pt-x-Zn-y/HZSM-5 catalysts showed significantly lower deactivation rate constants compared to the monometallic Pt/HZSM-5 catalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Multidisciplinary Sciences

Heterogeneous lattice strain strengthening in severely distorted crystalline solids

Jia Li et al.

Summary: Multi-principal element alloys (MPEAs) exhibit outstanding mechanical properties due to the distinct atomic lattice distortion effect, and the research reveals the strengthening mechanisms caused by heterogeneous lattice strain-induced unusual dislocation behaviors, leading to strength-ductility synergy.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2022)

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Article Multidisciplinary Sciences

Catalytic ozone decomposition and adsorptive VOCs removal in bimetallic metal-organic frameworks

Chen Dong et al.

Summary: Warm-season O-3 pollution is increasing worldwide, posing a threat to human health and the environment. Researchers have developed a stable MOF that can capture airborne VOCs and decompose trace O-3. This study demonstrates the potential of bimetallic MOFs in catalytic O-3 decomposition and provides insights for developing advanced air purification materials.

NATURE COMMUNICATIONS (2022)

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Article Engineering, Environmental

Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO2-Based Catalysts

Jianghao Zhang et al.

Summary: This study investigates the effect of transitional metal dopants on the activity of a Pt/CeO2 catalyst for the oxidation of formaldehyde (HCHO). It is found that different transitional metal dopants can significantly modify the electronic structure of the catalyst and tune the bonding strength of HCHO/intermediates with the Pt-CeO2 interface. The catalyst with moderate bonding strength (i.e., Pt-Mn/CeO2) exhibits the highest reactivity, while the catalyst with the highest bonding strength (i.e., Pt-Cu/CeO2) shows dramatically decreased activity.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Nanoscience & Nanotechnology

A Hydrothermally Stable Single-Atom Catalyst of Pt Supported on High-Entropy Oxide/Al2O3: Structural Optimization and Enhanced Catalytic Activity

Shuaiqi Zhao et al.

Summary: The study presents a single-atom Pt-HEO/Al2O3 catalyst achieved through a sol-gel-assisted mechanical milling strategy, where the strong interaction between HEO and Al2O3 effectively inhibits the growth of HEO microparticles, while another strong interaction between Pt and HEO stabilizes single-atom Pt on HEO. This catalyst shows superior stability against hydrothermal aging and long-term reaction stability for CO catalytic oxidation, exceeding 540 hours, opening up new possibilities for practical applications.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Physical

Simulated solar light driven photothermal catalytic purification of toluene over iron oxide supported single atom Pt catalyst

Zhiwei Wang et al.

Summary: Fe2O3 supported single atom Pt catalysts were synthesized via a novel impregnation-pyrolysis method, showing good light-thermal conversion efficiency and high toluene oxidation performance under simulated sunlight irradiation. The role of Vis-IR light in the photothermal catalytic oxidation of toluene was highlighted, and a possible reaction pathway was proposed based on experiments.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Environmental Sciences

Soot combustion over CeO2 catalyst: the influence of biodiesel impurities (Na, K, Ca, P) on surface chemical properties

Jishuang He et al.

Summary: This study found that Na- and K-doped catalysts have a promoting effect on soot combustion, while Ca- and P-doped catalysts have a negative impact. Doping biodiesel impurities led to a smaller surface area by blocking small pores. Surface chemical properties, including NO oxidation/storage capacity, play a significant role in promoting soot combustion.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021)

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Article Chemistry, Multidisciplinary

Operando Investigation of Toluene Oxidation over 1D Pt@CeO2 Derived from Pt Cluster-Containing MOF

Qingyue Wang et al.

Summary: A unique 1D nanostructure of Pt@CeO2-BDC was prepared for toluene oxidation, facilitating the stepwise oxidation of toluene to CO2 and H2O. The presence of Pt clusters on the catalyst surface promoted the adsorption of toluene and reaction activation.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Physical

Oxygen vacancy engineering in Fe doped akhtenskite-type MnO2 for low-temperature toluene oxidation

Yu Wang et al.

Summary: This study examined two types of oxygen vacancies (V-O) and their concentrations in MnO2 catalysts, finding that catalysts with higher concentrations of V-O (FM) exhibited superior reaction rates and stability compared to other types. Additionally, in situ DRIFTS spectra revealed that higher concentrations of V-O (FM) sites accelerated the transformation of intermediates, leading to the oxidation of toluene into CO2 and H2O.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Multidisciplinary Sciences

Electron donation of non-oxide supports boosts O2 activation on nano-platinum catalysts

Tao Gan et al.

Summary: The concept of increased electron donors induced by nitrogen vacancies is adopted to develop an efficient strategy for preparing highly active and stable catalysts for molecular O-2 activation. The synergistic catalyst shows great enhancement of catalytic performance and durability in toluene oxidation, demonstrating the innovative strategy of using electron-rich non-oxide substrates for developing active Pt-based oxidation catalysts.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Investigation into the roles of different oxygen species in toluene oxidation over manganese-supported platinum catalysts

Yuhang Sun et al.

Summary: The catalytic oxidation of toluene over Pt/Mn3O4 was investigated to elucidate the roles of different oxygen species. Pt/Mn3O4-R catalyst possessed more surface oxygen vacancies, better redox properties, and dispersion of platinum particles, leading to higher activity for toluene oxidation. Toluene oxidation over Pt/Mn3O4-R might follow the Mars-van Krevelen mechanism with a possible pathway of toluene→benzoate→carbonate→CO2.

MOLECULAR CATALYSIS (2021)

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Article Chemistry, Physical

Strong metal-support interactions on gold nanoparticle catalysts achieved through Le Chatelier's principle

Hai Wang et al.

Summary: The study demonstrates CO2-induced redox reaction facilitates the migration of oxide support onto gold nanoparticles, forming strong metal-support interactions and resulting in sinter-resistant gold catalysts.

NATURE CATALYSIS (2021)

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Article Chemistry, Physical

Sulphur vacancy derived anaerobic hydroxyl radical generation at the pyrite-water interface: Pollutants removal and pyrite self-oxidation behavior

Cancan Ling et al.

Summary: In anaerobic water environments, FeS2 with sulfur vacancies stabilizes H2O adsorption to compensate for the energy barrier of H2O oxidation on pyrite surfaces. The presence of surface Fe3+ and nearby H2O molecules promotes the oxidation of adsorbed H2O, generating free hydroxyl radicals. These results shed light on the mechanism of anaerobic hydroxyl radical generation on pyrite surfaces and its environmental implications.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Multidisciplinary

Activating Metal Oxides Nanocatalysts for Electrocatalytic Water Oxidation by Quenching-Induced Near-Surface Metal Atom Functionality

Changchun Ye et al.

Summary: The study presents a strategy of using quenching to modulate the surface chemistry of metal oxide nanocatalysts, leading to reduced overpotential for oxygen evolution reaction and improved activity. It is found that this strategy is also effective for other metal oxides, providing new insights for activating metal oxide catalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Energy & Fuels

Pt/Fe2O3 with Pt-Fe pair sites as a catalyst for oxygen reduction with ultralow Pt loading

Ruijie Gao et al.

Summary: The study focuses on loading platinum onto α-Fe2O3 to create a highly active and stable catalyst with dispersed Pt-Fe pair sites, which exhibits excellent catalytic performance and cycling stability in alkaline conditions.

NATURE ENERGY (2021)

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Review Chemistry, Multidisciplinary

Single Atom Catalysts: A Review of Characterization Methods

Matthew Kottwitz et al.

Summary: Single atom catalysts have the potential to exhibit higher activity, stability, and selectivity compared to nanoparticle catalysts, but fundamental questions regarding their physicochemical properties remain unanswered. The main challenge in research is how to accurately characterize the single atom environments while considering complicating factors such as low weight loadings, strong metal-support interactions, and atomic and multiscale heterogeneity.

CHEMISTRYMETHODS (2021)

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Article Chemistry, Physical

Boosting the electrochemical performance of hematite nanorods via quenching-induced metal single atom functionalization

Ming Su et al.

Summary: A new synthetic strategy of quenching has been reported as an effective method for loading single atom sites onto nanostructured supports. The resulting electrodes exhibit outstanding performance, offering high capacitance and exceptional energy density, opening up new avenues for research in energy and catalysis.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Physical

Comparative study of α-, β-, γ- and δ-MnO2 on toluene oxidation: Oxygen vacancies and reaction intermediates

Wenhao Yang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Engineering, Environmental

Toluene oxidation over Co3+-rich spinel Co3O4: Evaluation of chemical and by-product species identified by in situ DRIFTS combined with PTR-TOF-MS

Jinping Zhong et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

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Article Chemistry, Physical

Highly efficient mesoporous MnO2 catalysts for the total toluene oxidation: Oxygen-Vacancy defect engineering and involved intermediates using in situ DRIFTS

Shengpeng Mo et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Chemistry, Physical

Oxygen vacancy mediated CuyCo3-yFe1Ox, mixed oxide as highly active and stable toluene oxidation catalyst by multiple phase interfaces formation and metal doping effect

Zhe Li et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Engineering, Environmental

Boosting Toluene Combustion by Engineering Co-O Strength in Cobalt Oxide Catalysts

Yongjie Shen et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

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Article Engineering, Environmental

Toluene oxidation process and proper mechanism over Co 3 O 4 nanotubes: Investigation through in -situ DRIFTS combined with PTR-TOF-MS and quasi in -situ XPS

Jinping Zhong et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Multidisciplinary Sciences

Reinforcing materials modelling by encoding the structures of defects in crystalline solids into distortion scores

Alexandra M. Goryaeva et al.

NATURE COMMUNICATIONS (2020)

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Article Nanoscience & Nanotechnology

Effect of Absorbed Sulfate Poisoning on the Performance of Catalytic Oxidation of VOCs over MnO2

Peng Wu et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Cu2+-Decorated Porous Co3O4 Nanosheets for Photothermocatalytic Oxidation of Toluene

Shuaiqi Zhao et al.

ACS APPLIED NANO MATERIALS (2020)

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Review Chemistry, Multidisciplinary

Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

Chi He et al.

CHEMICAL REVIEWS (2019)

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Article Chemistry, Physical

Fully Oxidized Ni-Fe Layered Double Hydroxide with 100% Exposed Active Sites for Catalyzing Oxygen Evolution Reaction

Chunguang Kuai et al.

ACS CATALYSIS (2019)

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Article Chemistry, Multidisciplinary

Strong Electronic Interaction of Amorphous Fe2O3 Nanosheets with Single-Atom Pt toward Enhanced Carbon Monoxide Oxidation

Wenlong Chen et al.

ADVANCED FUNCTIONAL MATERIALS (2019)

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Article Chemistry, Multidisciplinary

Highly Active and Stable Metal Single-Atom Catalysts Achieved by Strong Electronic Metal-Support Interactions

Junjie Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Multidisciplinary Sciences

Surpassing the single-atom catalytic activity limit through paired Pt-O-Pt ensemble built from isolated Pt1 atoms

Hui Wang et al.

NATURE COMMUNICATIONS (2019)

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Review Chemistry, Multidisciplinary

O-2 Activation by Metal Surfaces: Implications for Bonding and Reactivity on Heterogeneous Catalysts

Matthew M. Montemore et al.

CHEMICAL REVIEWS (2018)

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Article Chemistry, Multidisciplinary

Activating lattice oxygen redox reactions in metal oxides to catalyse oxygen evolution

Alexis Grimaud et al.

NATURE CHEMISTRY (2017)

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Article Engineering, Environmental

Facet-Dependent Cr(VI) Adsorption of Hematite Nanocrystals

Xiaopeng Huang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016)

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Article Chemistry, Physical

Role of different coordinated Cu and reactive oxygen species on the highly active Cu-Ce-Zr mixed oxides in NH3-SCO: a combined in situ EPR and O-2-TPD approach

Zhenping Qu et al.

CATALYSIS SCIENCE & TECHNOLOGY (2016)

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Article Chemistry, Multidisciplinary

Nb-Doped Hematite Nanorods for Efficient Solar Water Splitting: Electronic Structure Evolution versus Morphology Alteration

Yanming Fu et al.

CHEMNANOMAT (2016)

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Article Chemistry, Physical

Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution

Jiawei Xue et al.

CHEMCATCHEM (2016)

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Article Multidisciplinary Sciences

Identification of active sites in CO oxidation and water-gas shift over supported Pt catalysts

Kunlun Ding et al.

SCIENCE (2015)

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Article Chemistry, Physical

Au-Decorated Silicene: Design of a High-Activity Catalyst toward CO Oxidation

Chong Li et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2013)

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Article Chemistry, Multidisciplinary

Charge Separation Promoted Activation of Molecular Oxygen by Neutral Gold Clusters

Alex P. Woodham et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

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Article Multidisciplinary Sciences

Interface-Confined Ferrous Centers for Catalytic Oxidation

Qiang Fu et al.

SCIENCE (2010)

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Article Chemistry, Physical

Catalytic combustion of volatile organic compounds on gold/iron oxide catalysts

S Minicò et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2000)

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Quenching-Induced Defect-Rich Platinum/Metal Oxide Catalysts Promote Catalytic Oxidation

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