A5102327740- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- 2D Materials and Applications
- MXene and MAX Phase Materials
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Graphene research and applications
- Thermal Expansion and Ionic Conductivity
- Electrochemical Analysis and Applications
- Perovskite Materials and Applications
- Crystallography and molecular interactions
- Thermal properties of materials
- Electrochemical sensors and biosensors
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- CO2 Reduction Techniques and Catalysts
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Flame retardant materials and properties
- Chemical Synthesis and Analysis
- Advanced Thermoelectric Materials and Devices
- Ferroelectric and Piezoelectric Materials
- Supramolecular Self-Assembly in Materials
- Electrocatalysts for Energy Conversion
- Supramolecular Chemistry and Complexes
Sungkyunkwan University
2020-2024
City University College of Science and Technology
2024
Xiamen University
2024
Renmin University of China
2024
Sinopec (China)
2024
East China Normal University
2024
Northwestern Polytechnical University
2023
Chinese Academy of Sciences
2023
Dalian Institute of Chemical Physics
2023
Xijing University
2023
Abstract Electroreduction of CO 2 to C 2+ products provides a promising strategy for reaching the goal carbon neutrality. However, achieving high selectivity at current density remains challenge. In this work, we designed and prepared multi‐sites catalyst, in which Pd was atomically dispersed Cu (Pd−Cu). It found that Pd−Cu catalyst had excellent performance producing from electroreduction. The Faradaic efficiency (FE) could be maintained approximately 80.8 %, even 0.8 A cm −2 least 20...
The modification with 4-iodophenylboronic acid (4-IPBA) is optimal due to the strongest coordination Ni vacancies and best energy level alignment perovskite.
Abstract Strong metal‐support interaction (SMSI) greatly improves the performances of various supported metal nanoparticle catalysts. Classical SMSI relies on oxide species with substoichiometric oxygen concentration, which prefers to retreat off in humid and oxidative atmospheres. A is reported oxygen‐saturated overlayers Au/TiO 2 catalyst achieved by steaming treatment, an opposite condition classical formation. Through a combination experimental theoretical methods, this study...
Abstract How Nature synthesizes enantiomerically pure substances from achiral or racemic resources remains a mystery. In this study, we aimed to emulate natural phenomenon by constructing chiral tetrahedral cages through self‐assembly, achieved condensing two compounds–a trisamine and trisaldehyde. The occurrence of intercomponent CH⋅⋅⋅π interactions among the phenyl building blocks within cage frameworks results in twisted conformations, imparting planar chirality tetrahedrons. instances...
A silicon-based anode is one of the most promising materials for high-current-density lithium-ion batteries (LIBs). However, volume expansion pure Si and complex synthesis SiOx make their practical application challenging. On other hand, SiO2, as another alternative to Si-based anodes, has attractive properties such high theoretical capacity, abundance elements, cost-effectiveness, mechanical strength. Nevertheless, due its intrinsic poor electrochemical activity lithiation, it challenging...
1D vdW Nb 2 Se 9 is a promising advanced anode material for LIBs due to superior electrochemical performance originating from its unique structural properties, which allow swift transport of Li ions and buffer the volume changes during Li-ion storage.
Abstract In this study, high‐purity and centimeter‐scale bulk Ta 2 Ni 3 Se 8 crystals are obtained by controlling the growth temperature stoichiometric ratio between tantalum, nickel, selenium. It is demonstrated that could be effectively exfoliated into a few chain‐scale nanowires through simple mechanical exfoliation liquid‐phase exfoliation. Also, calculation of electronic band structures confirms semiconducting material with small bandgap. A field‐effect transistor successfully...
Topological Dirac nodal-line semimetals host topologically nontrivial electronic structure with crossings around the Fermi level, which could affect photocarrier dynamics and lead to novel relaxation mechanisms. Herein, by using time- angle-resolved photoemission spectroscopy, we reveal previously-inaccessible linear dispersions of bulk conduction bands above level in a semimetal PtSn$_4$, as well momentum temporal evolution gapless nodal lines. A surprisingly ultrafast within few hundred...
Abstract The development of advanced anode materials for lithium‐ion batteries that can provide high specific capacity and stable cycle performance is paramount importance. This study presents a novel approach synthesizing molecular‐level homogeneous carbon integration to porous SiO 2 nanoparticles (SiO @C NPs) tailored enhance their electrochemical activities battery anode. By varying the ratio precursors sol–gel reaction (phenyltrimethoxysilane (PTMS) tetraethoxysilane (TEOS)), content...
In this study, single-chain atomic crystals (SCACs), Mo3Se3–, which can be uniformly dispersed, with an atomically thin diameter of ∼0.6 nm were modified to disperse in organic solvent. Various surfactants chosen provide steric hindrance aqueous-dispersed Mo3Se3– by modifying the surface Mo3Se3–. The dispersions surface-modified SCACs nonpolar solvent (toluene, benzene, and chloroform) stable a uniform 2 nm, they have enhanced stability from oxidation (>10 days). With that polystyrene tail...
Type II clathrates are interesting due to their potential thermoelectric applications. Powdered X-ray diffraction (XRD) data and density functional calculations for NaxSi136 found a lattice contraction as x increases 0 < 8 an expansion > 8. This is explained by XRD that shows increases, the Si28 cages filled first Si20 then Motivated this work, here we report results of first-principles structural vibrational properties clathrate compounds AxSi136, AxGe136, AxSn136. We present variation...
Aqueous dispersion of van der Waals bonded one-dimensional materials Mo6S3I6 with hydrophobic surfaces has been studied. The surface charge the dispersed is controlled from negative to positive by type dispersant tail (anionic, SDS and NaDDBS; cationic, CTAB; nonionic, Poloxamer 407), through this, it possible deposit in nanosized electrophoretic deposition at a desired position. When flexible device was manufactured transferring Mo6S3I6, confirmed that electrical conductivity can be...
Abstract In this research, dispersion of a new type one-dimensional inorganic material Nb 2 Se 9 , composed van der Waals bonds, in aqueous solution for bio-application study were studied. To disperse which exhibits hydrophobic properties water, experiments carried out using block copolymer (poloxamer) as dispersant. It was confirmed that PPO, the portion Poloxamer, adsorbed onto surface and PEO, hydrophilic portion, induced steric hinderance to size 10 nm or less. confirm adaptability...
We synthesized ternary composition chalcogenide Ta2NiSe7, a quasi-one-dimensional (Q1D) material with excellent crystallinity. To utilize the electrical conductivity property of breakdown current density (JBD) according to thickness change through mechanical exfoliation was measured. It confirmed that as decreased, maximum voltage (VBD) increased, and at 18 nm thickness, 35 MA cm-2 JBD measured, which times higher than copper, is commonly used an interconnect material. By optimization...
Electrochemical dopamine (DA) detection has been extensively studied for the practical diagnosis of neurological disorders. A major challenge in this system is to synthesize selective and sensitive DA-sensing electrocatalysts extracellular fluids because critical interferents such as uric acid (UA) ascorbic (AA) exhibit oxidation potentials similar that DA. Herein, we report an extremely electrocatalyst DA sensing prepared by vanadium selenide (V2Se9). solution-based process first time was...
In this study, the one-dimensional (1D) material V2Se9 was successfully synthesized using a colloidal method with VO(acac)2 and Se powder as precursors in 1-octadecene solvent. The obtained colloidally (C-V2Se9) has an ultrathin nanobelt shape 4.5 times higher surface area compared bulk V2Se9, which is solid-state reaction previously reported. addition, all surfaces of C-V2Se9 are exposed to atoms, advantageous for storing Li through conversion into Li2Se phase. Herein, electrochemical...
We have mostly performed vibrational studies of Type-II silicon-germanium clathrate alloys, namely, Si136-xGex (0 < x ≤ 128), using periodic density functional theory (DFT). Our computed lattice constant for various stoichiometric amount, x, Ge agrees to some extent with the observed X-ray diffraction (XRD) data, along monotonically increasing dependence on x. According our bandgap energy calculation via Vienna ab initio simulation package (VASP), Si128Ge8 has a "nearly-direct" approximately...
Low-dimensional Nb2Se9 nanocrystals were synthesised through a simple one-pot colloidal synthesis with C18 organic solvents (octadecane, oleylalcohol, octadecanethiol, octadecene (ODE), and oleylamine (OLA)) of varied terminal functional groups. The solvent high reducing power facilitated the nucleation nanoparticle, lowering threshold concentration broadening spectrum. As solvent, agent, capping ODE functions as primary factor in high-quality nanorods. We further discuss unique adhesion...