A5070520834- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Nanomaterials for catalytic reactions
- Catalysis and Hydrodesulfurization Studies
- Supercapacitor Materials and Fabrication
- Catalysis for Biomass Conversion
- Catalysts for Methane Reforming
- Advanced battery technologies research
- Mesoporous Materials and Catalysis
- Advanced Photocatalysis Techniques
- Layered Double Hydroxides Synthesis and Applications
- Zeolite Catalysis and Synthesis
- Surface Chemistry and Catalysis
- Ammonia Synthesis and Nitrogen Reduction
- TiO2 Photocatalysis and Solar Cells
- Asymmetric Hydrogenation and Catalysis
- Advanced Chemical Physics Studies
- Advancements in Battery Materials
- Gas Sensing Nanomaterials and Sensors
- Carbon dioxide utilization in catalysis
- Oxidative Organic Chemistry Reactions
- 2D Materials and Applications
- Semiconductor materials and devices
- Graphene research and applications
Center for Nanoscale Materials
2025
Argonne National Laboratory
2024-2025
University of Oklahoma
2019-2024
Brookhaven National Laboratory
2022-2024
University of Florida
2022
Washington State University
2017-2020
East China University of Science and Technology
2012-2017
Zhejiang Sci-Tech University
2011-2012
Single layered Ti3C2(OH)2 nanosheets have been successfully fabricated by etching its Ti3AlC2 precursor with KOH in the presence of a small amount water. The OH group replaced Al layer within structure during etching, and could be easily efficiently achieved through simple washing process. delaminated single-layered are clearly revealed atomic force microscopy to several micrometers lateral size. Interestingly, exfoliated restacked form new layer-structured material after drying. When...
Nature takes advantage of the pervasive presence water to control many enzymatic reactions by utilizing unique properties water, which in turn help regulating reaction rates, selectivity, and rates mass transfer. Some natural phenomena plays role solvent, reactant, or byproduct find parallels industrially relevant catalyzed synthetic heterogeneous catalysts. This review addresses different mechanistic features catalytic influenced water. They include modification reactant (or product)...
Due to their role in controlling global climate change, the selective conversion of C
The development of electrocatalysts with reduced iridium (Ir) loading for the oxygen evolution reaction (OER) is essential to produce low-cost green hydrogen from water electrolysis under acidic conditions. Herein, an atomically thin layer oxide (IrOx) has been uniformly dispersed onto cobalt (Co3O4) nanocrystals improve efficient use Ir OER. In situ characterization and theoretical calculations reveal that compared conventional IrOx cluster, shows stronger interaction Co3O4 consequently...
Abstract Compared with batteries, the advantages of capacitive energy storage include high power, fast charging kinetics, and long cycling stability. Owing to their layered structure tunable transition metal charge, double hydroxides (LDHs) have great potential be applied as pseudocapacitor materials. Here, a systematic experimental study is reported on impact Ni/Al ratio structure, morphology, ion transport interlayer phenomena, performance NiAl‐LDH supercapacitor electrode materials, in...
A series of mesoporous CeO<sub>2</sub> supported noble metal (Pt, Pd, Au and Ag) catalysts, fabricated through a facial pyrolysis <italic>in situ</italic> reduction protocol, were used for formaldehyde elimination under ambient conditions.
Precise tuning of the local environment surrounding active site is key to engineering catalytic materials. Here, we have explored a nanoconfined system that exhibits highly selective hydrogenation C=O bonds relative C=C bonds. Organic surfactants anchored on metal surfaces not only can modify performance according their steric properties but also regulate solvent distribution at liquid–solid interface, creating nanopockets adjustable hydrophobic/hydrophilic interactions. The cooperative...
A facile one-pot co-precipitation approach was applied to fabricate a meso-structured Pd–CeOx composite for low temperature CO oxidation. The as-prepared material had much higher specific area and highly dispersed noble metal species, thus showed excellent catalytic activity stability oxidation, especially under ambient conditions. Complete conversion could be achieved at as 25 °C 5.9 wt% Pd doped catalyst, when 3.0 vol% H2O introduced into the feed gas. reaction mechanism on such catalyst...
Porous Ni(OH)2 nanocubes were successfully fabricated by a simple self-sacrificial-template protocol using Ni-Co Prussian blue analogue (PBA) as precursor. When treated with NaOH, the simultaneous corrosion of PBA precursor and formation amorphous resulted in porous uniform size about 100 nm. Due to large specific surface area unique regular structure, as-prepared materials showed capacitance, relatively stable rate capability long cycle stability when used electrode for supercapacitors....
Nanoparticles with well-defined facets enable quantitative correlations between surface features and catalytic activity. Here, we explore the role of geometric acid–base properties in mechanism aldol condensation catalyzed by ceria nanoshapes. In crucial C–C coupling step, two carbonyl adsorbates are bound to adjacent cations. On CeO2(110) plane, all atoms lie on same layer, favoring interaction facilitating bimolecular coupling. Thus, initial unimolecular deprotonation is rate-limiting....
Abstract Scaling up superconducting quantum circuits based on transmon qubits necessitates substantial enhancements in qubit coherence time. Over recent years, tantalum (Ta) has emerged as a promising candidate for qubits, surpassing conventional counterparts terms of However, amorphous surface Ta oxide layer may introduce dielectric loss, ultimately placing limit the In this study, novel approach suppressing formation using an ultrathin magnesium (Mg) capping is presented. Synchrotron‐based...
In order to get a methane catalytic combustion micro-sensor, two different systems used in traditional sensors were fabricated into mesoporous structure and their activities investigated. comparison, the Rh2O3-Al2O3 system can form more uniform has much higher specific surface area. Even importantly, it relatively activity stability for reaction. After being coated on microelectro-mechanical (MEMS) micro-heater, type micro-sensor was fabricated. The meso-structured hybrid based MEMS sensor...
A series of mesoporous PdCeOx solid solution with high specific area was successfully fabricated through a facile coprecipitation and low-temperature calcination strategy. The resulting materials possessed excellent catalytic activities for CO oxidation. complete conversion could be achieved at as low 20 °C. doping palladium increased the concentration structural oxygen vacancy which is beneficial oxidation reaction process. mechanism over proved in situ DRIFTS analysis.
Abstract Understanding the atomistic structure of active site during catalytic reactions is paramount importance in both fundamental studies and practical applications, but such are challenging due to complexity heterogeneous systems. Here, we use Pt/CeO 2 as an example study dynamic nature sites water-gas-shift reaction (WGSR) by combining multiple situ characterization tools. We show that different concentrations interfacial Pt δ+ – O Ce 4+ moieties at interfaces responsible for rank...