A5061408313- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Spectroscopy and Quantum Chemical Studies
- Micro and Nano Robotics
- 2D Materials and Applications
- Fuel Cells and Related Materials
- Copper-based nanomaterials and applications
- Chalcogenide Semiconductor Thin Films
- Advanced battery technologies research
- Advancements in Battery Materials
- Photochemistry and Electron Transfer Studies
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Fluid Dynamics and Mixing
- Machine Learning in Materials Science
- Microfluidic and Bio-sensing Technologies
- CO2 Reduction Techniques and Catalysts
- MXene and MAX Phase Materials
- Fluid Dynamics and Heat Transfer
- Electronic and Structural Properties of Oxides
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- Nanomaterials and Printing Technologies
Shanghai Jiao Tong University
2023-2025
Cornell University
2020-2024
Liaoning Technical University
2024
China State Shipbuilding (China)
2024
Pennsylvania State University
2015-2022
National Center for Nanoscience and Technology
2021
Park University
2017-2018
Pennsylvania Department of Education
2018
Nankai University
2012-2013
Exfoliated 2H molybdenum disulfide (MoS2) has unique properties and potential applications in a wide range of fields, but corresponding studies have been hampered by the lack effective routes to it bulk quantities. This study presents rapid efficient route obtain exfoliated MoS2, which combines fast sonication-assisted lithium intercalation infrared (IR) laser-induced phase reversion. We found that complete MoS2 with butyllithium could be effected within 1.5 h aid sonication. The 1T...
The controlled exfoliation of transition metal dichalcogenides (TMDs) into pristine single- or few-layer nanosheets remains a significant barrier to fundamental studies and device applications TMDs. Here we report novel strategy for exfoliating crystalline MoS2 suspensions with retention the semiconducting 2H phase. reaction substoichiometric amounts n-butyllithium results in intercalation edges crystals, which are then readily exfoliated 45 vol % ethanol–water solution. Surprisingly,...
The molecular details of an electrocatalytic interface play essential role in the production sustainable fuels and value-added chemicals. Many electrochemical reactions exhibit strong cation-dependent activities, but how cations affect reaction kinetics is still elusive. We report effect (K+, Li+, Ba2+) on interfacial water structure using second-harmonic generation (SHG) classical dynamics (MD) simulation. second- (χH2O(2)) third-order (χH2O(3)) optical susceptibilities Pt are smaller...
Rheotaxis is a common phenomenon in nature that refers to the directed movement of micro-organisms as result shear flow. The ability mimic natural rheotaxis using synthetic micro/nanomotors adds functionality enable their applications biomedicine and chemistry. Here, we present hybrid strategy can achieve both positive negative bimetallic micromotors by employing combination chemical fuel acoustic force. An acoustofluidic device developed for integration two propulsion mechanisms. Using...
Monolayer WS2 has interesting properties as a direct bandgap semiconductor, photocatalyst, and electrocatalyst, but it is still significant challenge to prepare this material in colloidal form by liquid-phase exfoliation (LPE). Here, we report the preparation of 1–2 layer semiconducting nanosheets yield 18–22 wt % modified LPE method that involves preintercalation with substoichometric quantities n-butyllithium. The exfoliated nanosheeets are n-type, have ∼1.78 eV, act cocatalyst CdS...
Visible light driven Cu2O–Au micromotors exhibit rapid on/off switching and speed control. Electrochemical measurements confirm that the light-induced movement of involves a self-electrophoresis mechanism modulated by photoconductivity Cu2O. This study extends utilization electromagnetic spectrum for micro/nanomotors into visible range.
Exfoliated nanosheets derived from Dion–Jacobson phase layer perovskites (TBAxH1–xA2B3O10, A = Sr, Ca, B Nb, Ta) were grown layer-by-layer on fluorine-doped tin oxide and gold electrode surfaces. Electrochemical impedance spectra (EIS) of the five-layer nanosheet films in contact with aqueous electrolyte solutions analyzed by Mott–Schottky method to obtain flat-band potentials (VFB) semiconductors as a function pH. Despite capacitive contributions electrode–solution interface, reliable...
Electrochemical reduction of CO2 (CO2RR) coupled with renewable electrical energy is an attractive way upgrading to value-added chemicals and closing the carbon cycle. However, CO2RR electrocatalysts still suffer from high overpotential, complex reaction pathways often lead mixed products. Early research focuses on tuning binding intermediates electrocatalysts, recent efforts have revealed that design electrolysis reactors equally important for efficient selective CO2RR. In this review, we...
Detailed first-principles computations were performed on the geometric and electronic properties of interfaces between graphene ZnO polar surfaces. A notable van der Waals force exists at interface, charge transfer occurs as a result difference in their work functions. The Dirac point remains intact despite its adsorption ZnO, implying that interaction with does not affect superior conductivity graphene. Excited electrons within energy range 0–3 eV (versus Fermi energy) hybrid systems are...
We report the synthesis and properties of rod-shaped gold/iron oxide nanomotors that are powered by visible light in dilute hydrogen peroxide solutions. Electrochemical measurements confirmed light-driven operate a self-electrophoretic mechanism, modulated photovoltage photoconductivity oxide. Due to magnetism iron oxide, can be steered an external magnetic field without incorporating additional materials into nanomotors.
Flexible textile displays can be revolutionary for information transmission at any place and time. Typically, are fabricated by traditional rigid electronics that sacrifice mechanical flexibility of devices or flexible do not have an appropriate choice to arbitrarily control single pixels. This work reports on electroluminescent fabric woven ultrastretchable fibers (electroluminescent up 400% stretch, electrode 250% stretch), which exhibit the pixel-based controllable pattern display a...
We report the fabrication of tadpole-shaped Si–Au micromotors using glancing angle deposition.
In water-splitting dye-sensitized photoelectrochemical cells (WS-DSPECs), charge recombination competes with catalytic water oxidation to determine the overall efficiency of system. The kinetics these processes have been difficult understand because transient absorbance (TA) experiments typically show nearly complete on submillisecond time scale; in contrast, electrochemical measurements such as open circuit photovoltage decay suggest a scale that is 2–3 orders magnitude longer. Here we...
Significance Artificial photosynthetic systems use molecular light absorbers to convert sunlight into useful chemical fuels such as hydrogen, methanol, or ammonia. A key bottleneck in these is the oxidation of water produce O 2 . This anodic reaction occurs under strongly oxidizing conditions that result damage organic dyes, electron relays, and catalyst molecules. Here we show encapsulation components a solid-state dye-sensitized solar cell by 2-nm-thick coating TiO dramatically improves...
The interaction between molecular species and charged interfaces plays an indispensable role in a multitude of electrochemical devices. Yet, very little is understood about the nature this interaction, particular, interfacial electric field. Second-order nonlinear spectroscopy such as second-harmonic generation (SHG) can provide chemical information on these interactions; however, phase has received limited attention SHG studies. Here, we demonstrate that essential to measurement field at...
A magnetic, metallic inverse opal fabricated by infiltration into a silica nanosphere template assembled from spheres with diameters less than 100 nm is an archetypal example of "metalattice". In traditional quantum confined structures such as dots, wires, and thin films, the physical dynamics in free dimensions typically largely decoupled behavior confining directions. metalattice, extended degrees freedom cannot be separated. Modeling predicts that magnetic metalattices should exhibit...
Water-splitting dye-sensitized photoelectrochemical cells (WS-DSPECs) utilize molecular species for light-harvesting and water oxidation in order to store solar energy as hydrogen fuel. To engineer these devices better performance, research has centered around suppressing charge recombination at the semiconductor–sensitizer interface developing catalysts oxidation. Yet it remains quantitatively unknown how much DSPECs can benefit from improvements. We use a simplified photoanode process...