Xuefei Weng

ORCID: 0000-0003-3671-258X
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About
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Research Areas
  • Catalytic Processes in Materials Science
  • Catalysis and Oxidation Reactions
  • Electrocatalysts for Energy Conversion
  • Catalysts for Methane Reforming
  • Conducting polymers and applications
  • Organic Electronics and Photovoltaics
  • Catalysis and Hydrodesulfurization Studies
  • Advanced battery technologies research
  • Advancements in Battery Materials
  • Advanced Chemical Physics Studies
  • High-pressure geophysics and materials
  • Extraction and Separation Processes
  • Physics of Superconductivity and Magnetism
  • Advanced Battery Materials and Technologies
  • MXene and MAX Phase Materials
  • Chemical Looping and Thermochemical Processes
  • Machine Learning in Materials Science
  • Graphene research and applications
  • Zeolite Catalysis and Synthesis
  • Electron and X-Ray Spectroscopy Techniques
  • Mesoporous Materials and Catalysis
  • Recycling and Waste Management Techniques
  • Organic Light-Emitting Diodes Research
  • Copper-based nanomaterials and applications
  • Carbon Dioxide Capture Technologies

Suzhou Institute of Nano-tech and Nano-bionics
2021-2024

Chinese Academy of Sciences
2021-2024

University of Science and Technology of China
2023

Xiamen University
2013-2022

Dalian University
2019-2022

Dalian University of Technology
2019-2022

Fritz Haber Institute of the Max Planck Society
2015-2019

Collaborative Innovation Center of Chemistry for Energy Materials
2014-2015

Green Chemistry
2014

University of Rochester
1994-1995

Improving Reactions at Interfaces Alloying precious metals such as platinum with more abundant transition metals, iron and nickel, can both improve their catalytic reactivity lower catalyst cost. Chen et al. (p. 495 ) explored using coatings of oxide–hydroxide layers on supported nanoparticles for CO oxidation. The presence this layer allowed the reaction to run rapidly room temperature by bringing together different sites two metals. addition nickel improved lifetime, an oxidative...

10.1126/science.1252553 article EN Science 2014-05-01

Significance Carbon deposits have been widely observed on metal surfaces in a variety of catalytic reactions, and the graphitic carbon species are often considered as inhibitors for surface reactions. We demonstrate here that CO adsorption oxidation can occur Pt covered by monolayer graphene, showing space between graphene overlayer act two-dimensional (2D) nanoreactor. Inside, happens with lower activation barrier due to confinement effect cover. This finding reminds us reconsider role...

10.1073/pnas.1416368111 article EN Proceedings of the National Academy of Sciences 2014-11-17

Lithium-sulfur (Li-S) batteries are considered as one of the most promising next-generation rechargeable owing to their high energy density and cost-effectiveness. However, sluggish kinetics sulfur reduction reaction process, which is so far insufficiently explored, still impedes its practical application. Metal-organic frameworks (MOFs) widely investigated a immobilizer, but interactions catalytic activity lithium polysulfides (LiPs) on metal nodes weak due presence organic ligands. Herein,...

10.1002/adma.202105541 article EN Advanced Materials 2021-10-08

Ceria (CeO2) has recently been found to be a promising catalyst in the selective hydrogenation of alkynes alkenes. This reaction occurs primarily on highly dispersed metal catalysts, but rarely oxide surfaces. The origin outstanding activity and selectivity observed CeO2 remains unclear. In this work, we show that one key aspect reaction-the interaction hydrogen with oxide-depends strongly presence O vacancies within CeO2. Through infrared reflection absorption spectroscopy well-ordered...

10.1021/jacs.7b10021 article EN Journal of the American Chemical Society 2017-11-13

In heterogeneous catalysis molecule–metal interaction is often modulated through structural modifications at the surface or under of metal catalyst. Here, we suggest an alternative way toward this modulation by placing a two-dimensional (2D) cover on surface. As illustration, CO adsorption Pt(111) has been studied 2D hexagonal boron nitride (h-BN) overlayer. Dynamic imaging data from electron microscopy and in situ spectroscopic results near ambient pressure conditions confirm that molecules...

10.1021/acs.nanolett.5b01205 article EN Nano Letters 2015-04-21

Direct propylene epoxidation with molecular oxygen is a dream reaction 100% atom economy, but aerobic challenging because of the undesired over-oxidation and isomerization epoxide products. Herein, we report construction uniform cobalt ions confined in faujasite zeolite, namely, Co@Y, which exhibits unprecedented catalytic performance propylene. Propylene conversion 24.6% achieved at oxide selectivity 57% 773 K, giving state-of-the-art production rate 4.7 mmol/gcat/h. The Co@Y very stable,...

10.1021/jacs.2c00792 article EN Journal of the American Chemical Society 2022-02-22

Currently, the construction of an acid-like catalyst surface in a high-pH electrolyte is advocated as one most pioneering strategies for significantly improving catalytic activity alkaline hydrogen evolution reaction. However, proton transfer kinetics that determines proton-coupled electron reaction largely dependent on usage extensive noble-metal bulk phase. Herein, well-designed dynamic system constructed by metallic WO2 matrix and supported Ru single atoms (0.89 wt %) grown nickel foam...

10.1021/acscatal.4c01173 article EN ACS Catalysis 2024-05-13

Room temperature adsorption of carbon dioxide (CO<sub>2</sub>) on monocrystalline CaO(001) thin films grown a Mo(001) substrate was studied by infrared reflection–absorption spectroscopy (IRAS) and quantum chemical calculations.

10.1039/c6cp08504k article EN cc-by Physical Chemistry Chemical Physics 2017-01-01

Abstract We studied CO oxidation on FeO(1 1 1) films Pt(1 at submonolayer oxide coverages ultrahigh vacuum and near‐atmospheric pressure conditions. The bilayer islands are inert towards 2 formation. In contrast, the FeO 2− x trilayer structure shows substantial production that reaches a maximum ≈40 % coverage both results provide compelling evidence /Pt(1 interface is most active in oxidation. Although boundaries possesses weakly bound oxygen species, strong binding of to Pt favors reaction...

10.1002/cctc.201500394 article EN ChemCatChem 2015-08-11

Active surfaces for the catalytic oxidation of CH4 on Pd and Pt were identified using infrared reflection absorption spectroscopy (IRAS) with a wide spectrum range (4000–450 cm–1) that is capable measuring both surface species changes specific to surface. Both metallic found be significantly less active than PdO under near-stoichiometric conditions. However, become very oxygen-poor This work represents first evidence such high activity Pt-group metal surfaces. A comparison behaviors CO...

10.1021/cs500510x article EN ACS Catalysis 2014-06-27

Strong metal–support interaction (SMSI) has been found to significantly modify catalytic performance in the last 4 decades. The origins of promotion effects SMSI still reamin unclear. In this work, fully covered TiOx/Pt(111) model surfaces were prepared mimic proposed encapsulation model. activities for CO oxidation on such as a function TiOx coverage examined catalysis reaction cell. ordered thin films enhanced rate Pt(111). apparent activation energy was obtained be 51 kJ/mol TiOx/Pt(111),...

10.1021/acscatal.8b02883 article EN ACS Catalysis 2018-09-24

Abstract LiNi x Co y Mn 1- - O 2 (0 &lt; , 1, NCM) is the dominant positive material for state-of-the-art lithium-ion batteries. However, sensitivity of NCM materials to moisture makes their manufacturing, storage, transportation, electrode processing and recycling complicated. Although it recognized that protons play a critical role in structure stability performance, proton exchange with Li + has not been well understood. Here, we employ advanced characterizations computational studies...

10.1038/s41467-024-53731-2 article EN cc-by Nature Communications 2024-11-13

Herein, we have shown that the [Ca-O-P] sites exposed on hydroxyapatite are clearly responsible for C-C formation in ethanol direct-coupling, and their high density accelerates coupling rate boosts C6-12 alcohol production. Notably, nanowire-like exhibited 30.4% selectivity to n-butanol 63.9% C6-12OH at a conversion of 45.7% 325 °C, thereby close 30% yield C6-12OH, which is greatly higher than using state-of-the-art catalysts (6%).

10.1039/c9cc05454e article EN Chemical Communications 2019-01-01

Here, we report a great promotion in platinum utilization efficiency and catalytic performance for the dehydrogenation of propane using hexagonal boron nitride nanosheet-supported Pt/Cu cluster catalyst.

10.1039/c9cy02313e article EN Catalysis Science & Technology 2019-12-26
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