A5031815205- 2D Materials and Applications
- Advanced Photocatalysis Techniques
- Graphene research and applications
- MXene and MAX Phase Materials
- Recycling and Waste Management Techniques
- Catalytic Processes in Materials Science
- Perovskite Materials and Applications
- Extraction and Separation Processes
- Boron and Carbon Nanomaterials Research
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- TiO2 Photocatalysis and Solar Cells
- Gas Sensing Nanomaterials and Sensors
- Electrocatalysts for Energy Conversion
- Environmental remediation with nanomaterials
- Quantum Dots Synthesis And Properties
- Advanced oxidation water treatment
- Carbon Nanotubes in Composites
- Chalcogenide Semiconductor Thin Films
- Advanced biosensing and bioanalysis techniques
- Nanomaterials for catalytic reactions
- Electrospun Nanofibers in Biomedical Applications
- Luminescence and Fluorescent Materials
- High voltage insulation and dielectric phenomena
- Catalysis and Hydrodesulfurization Studies
Nanjing University
2010-2025
Southeast University
2003-2024
Shanghai Polytechnic University
2015-2024
East China University of Science and Technology
2024
Beijing Institute of Technology
2021-2024
Ministry of Education
2024
State Key Laboratory of Chemical Engineering
2024
Shanghai University of Engineering Science
2024
Yangzhou University
2018-2023
Qingdao University
2023
Based on ab initio density functional calculations, we propose $\ensuremath{\gamma}\text{\ensuremath{-}}\mathrm{P}$ and $\ensuremath{\delta}\text{\ensuremath{-}}\mathrm{P}$ as two additional stable structural phases of layered phosphorus besides the $\ensuremath{\alpha}\text{\ensuremath{-}}\mathrm{P}$ (black) $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{P}$ (blue) allotropes. Monolayers some these allotropes have a wide band gap, whereas others, including...
An outstanding challenge of theoretical electronic structure is the description van der Waals (vdW) interactions in molecules and solids. Renewed interest resolving this part motivated by technological promise layered systems including graphite, transition metal dichalcogenides, more recently, black phosphorus, which interlayer interaction widely believed to be dominated these types forces. We report a series quantum Monte Carlo (QMC) calculations for bulk phosphorus related few-layer...
We study the equilibrium geometry and electronic structure of thin films layered gray arsenic using ab initio density functional theory. In contrast to bulk As that is semimetallic, display a significant band gap depends sensitively on number layers, in-layer strain, layer stacking, interlayer spacing. find metallic character can be introduced by increasing layers beyond two or subjecting semiconducting monolayers bilayers moderate tensile strain. The strain-induced metal-semiconductor...
Cobalt (Co) and lithium (Li), rare valuable elements, are mainly used to prepare cobalt oxide (LiCoO2) for applications in lithium-ion batteries (LIBs). Developing an effective method recover Co Li from the waste LIBs is of great significance. In present study, were extracted pure LiCoO2 powders cathode materials after acid dissolution via a mechanochemical reduction process with iron powders. For powders, effects Fe mass ratio, rotation speed, time examined. These parameters influenced...
High photoinduced charge-carrier-separation efficiency plays a crucial factor in determining the photocatalytic activities of photocatalysts, and it remains challenging to steer charge separation an accurate manner. Herein, we address this important challenge by growing Co2P cocatalyst onto edges black phosphorus (BP) nanosheets craft Co–P bonds Co2P/BP photocatalyst. As demonstrated photocurrent measurement first-principle calculation, acting faciliate atomic-level charge-flow steering can...
Facilitated by TiO2 particles absorbing La3+ in hydrosol, La-doped was prepared a sol-hydrothermal method. Electron paramagnetic resonance and Brunauer−Emmett−Teller (BET) surface area analysis showed that the obtained anatase provided higher density of oxygen vacancies without change BET area. A theoretical calculation carried out to explain generation mechanism increased vacancies. The results (101) tends engender photoelectric conversion efficiency dye-sensitized solar cells fabricated...
We propose previously unknown allotropes of phosphorus carbide (PC) in the stable shape an atomically thin layer. Different geometries, which result from competition between sp2 bonding found graphitic C and sp3 black P, may be mapped onto 2D tiling patterns that simplify categorizing structures. Depending on category, we identify 2D-PC structures can metallic, semi-metallic with anisotropic Dirac cone, or direct-gap semiconductors their gap tunable by in-layer strain.
In analogy to III-V compounds, which have significantly broadened the scope of group IV semiconductors, we propose IV-VI compounds as isoelectronic counterparts layered V semiconductors. Using {\em ab initio} density functional theory, study yet unrealized structural phases silicon mono-sulfide (SiS). We find black-phosphorus-like $\alpha$-SiS be almost equally stable blue-phosphorus-like $\beta$-SiS. Both and $\beta$-SiS monolayers display a significant, indirect band gap that depends...
We present a scheme to categorize the structure of different layered phosphorene allotropes by mapping their nonplanar atomic onto two-color 2D triangular tiling pattern. In buckled monolayer, we assign atoms in "top" positions dark tiles and "bottom" light tiles. Optimum sp3 bonding is maintained throughout when each tile surrounded same number N like-colored tiles, with 0 ≤ 2. Our ab initio density functional calculations indicate that both relative stability electronic properties depend...
We present a paradigm in constructing very stable, faceted nanotube and fullerene structures by laterally joining nanoribbons or patches of different planar phosphorene phases. Our ab initio density functional calculations indicate that these phases may form nonplanar joints. Unlike fullerenes nanotubes obtained deforming single-phase monolayer at substantial energy penalty, we find to be nearly as stable the monolayers. The resulting rich variety polymorphs allows us tune electronic...
<italic>In situ</italic> crystallization and growth of TiO<sub>2</sub> nanospheres between MXene layers, which exhibited an intense adsorption capacity improved visible light photocatalysis.
The design of humidity actuators with high response sensitivity (especially actuation time) while maintaining favorable mechanical properties is important for advanced intelligent manufacturing, like soft robotics and smart devices, but still remains a challenge. Here, we fabricate robust conductive composite film-based actuator synergetic benefits from one-dimensional cellulose nanofibers (CNFs) carbon nanotubes (CNTs) as well two-dimensional graphene oxide (GO) via an efficient...
Here, a label-free perovskite-based photoelectrochemical (PEC) aptasensor was rationally designed for the displacement assay of dibutyl phthalate (DBP), well-known endocrine disruptor, with aid cetyltrimethylammonium bromide (CTAB). In this method, CTAB significantly enhanced PEC response and humidity resistance CH3NH3PbI3 perovskite by forming protecting layer passivating X- A-sites vacancies CH3NH3PbI3. addition, facilitated immobilization an aptamer through van der Waals hydrophobicity...
The weak interfacial binding affinities of the inorganic perovskite core with ligands and high density surface defect states induce facile detachment from nanocrystals (NCs), resulting in their poor colloidal stability fluorescence aqueous. In this work, a powerful ligand engineering strategy was proposed for eliminating defects aggregation NCs. Using an amphiphilic polymer octylamine-modified polyacrylic acid (OPA) as capping ligand, as-synthesized CsPbBr3 NCs retain photoluminescence...
Two-dimensional (2D) semiconductors for photocatalysis are more advantageous than the other photocatalytic materials since 2D generally have large specific surface area and abundant active sites. Phosphorus silicon (SiP), with an indirect bandgap in bulk a direct monolayer, has recently emerged as attractive material because of its anisotropic layered structure, tunable bandgap, high charge carrier mobility. However, utilization SiP photocatalyst been scarcely studied experimentally. Herein,...
The MXene-based nanocomposites comprised by multi-layered Ti3C2-MXene (ML-Ti3C2) nanosheets and transition metal oxide (TMO) nanomaterials, i.e. zinc (ZnO), bismuth molybdate (Bi2MoO6) tin dioxide (SnO2), were prepared in this work. After loading ML-Ti3C2 MXene, the contact angle of oleophobic ZnO, Bi2MoO6, SnO2 for oil drop decreases to 98°, 62°, 75°, respectively. improvement lipophilicity composites is conducive adsorption water-soluble organic pollutants. Coupling MXene enhances capacity...