A5101530981- Advanced Photocatalysis Techniques
- Covalent Organic Framework Applications
- Advanced oxidation water treatment
- Metal-Organic Frameworks: Synthesis and Applications
- Catalytic Processes in Materials Science
- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Electrocatalysts for Energy Conversion
- Advanced Nanomaterials in Catalysis
- Copper-based nanomaterials and applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Thermoelectric Materials and Devices
- Polymer Nanocomposites and Properties
- Conducting polymers and applications
- Thermal properties of materials
- Environmental remediation with nanomaterials
- Silicone and Siloxane Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Solid-state spectroscopy and crystallography
- Water Treatment and Disinfection
- CO2 Reduction Techniques and Catalysts
- Extraction and Separation Processes
- High-pressure geophysics and materials
- Microstructure and Mechanical Properties of Steels
- Ionic liquids properties and applications
Technische Universität Berlin
2020-2024
Zhejiang University-University of Edinburgh Institute
2021-2023
Shandong University
2023
Zhejiang University
2022
Institute of Geology and Geophysics
2022
China University of Mining and Technology
2021-2022
Chinese Research Academy of Environmental Sciences
2021-2022
Chinese Academy of Sciences
2019-2020
Hefei Institutes of Physical Science
2020
Institute of Solid State Physics
2020
Abstract The fabrication of macroscopic objects from covalent organic frameworks (COFs) is challenging but great significance to fully exploit their chemical functionality and porosity. Herein, COF/reduced graphene oxide (rGO) aerogels synthesized by a hydrothermal approach are presented. COFs grow in situ along the surface 2D sheets, which stacked 3D fashion, forming an ultralight aerogel with hierarchical porous structure after freeze-drying, can be compressed expanded several times...
Abstract Covalent organic frameworks (COFs) have emerged as an important class of semiconductors and photocatalysts for the hydrogen evolution reaction (HER)from water. To optimize their photocatalytic activity, typically moieties constituting are considered most suitable combinations them searched for. However, effect covalent linkage between these on performance has rarely been studied. Herein, we demonstrate that donor‐acceptor (D‐A) type imine‐linked COFs can produce with a rate high...
Solar-driven water generation is a sustainable treatment technology, helping to relieve global scarcity issues. However, this technology faces great challenges due the high energy consumption of evaporation yielding low rates. Here, covalent organic framework (COF)/graphene dual-region hydrogel, containing hydrophilic and hydrophobic regions in one material, developed through facile situ growth strategy. The COF covering parts graphene regions. Through accurate control both wetting regions,...
When new covalent organic frameworks (COFs) are designed, the main efforts typically focused on selecting specific building blocks with certain geometries and properties to control structure function of final COFs. The nature linkage (imine, boroxine, vinyl, etc.) between these naturally also defines their properties. However, besides type, orientation, i.e., constitutional isomerism linkages, has rarely been considered so far as an essential aspect. In this work, three pairs...
Photocatalytic ozonation of wastewater pollutants by sunlight is a highly attractive technology close to real application. Understanding this process on the atomic scale and under realistic working conditions challenging but vital for rational design catalysts photocatalytic decontamination systems. Here we study two active C3N4 photocatalysts (bulk nanosheet-structured C3N4) simultaneous visible-light irradiation O3 bubbling in water situ EPR spectroscopy coupled with an online...
Reactive oxygen species (ROS) are key oxidants for the degradation of organic pollutants in sunlight-driven photocatalytic water treatment, but their interaction with photocatalyst is easily ignored and, hence, comparatively poorly understood. Here we show that graphitic carbon nitride (C3N4, a famous visible-light-responsive photocatalyst) chemically stable toward ozone and superoxide radical; contrast, hydroxyl radical (•OH) can tear heptazine unit directly from C3N4 to form cyameluric...
The chemical nature of the organic cations governs optoelectronic properties two-dimensional organic-inorganic perovskites. But its mechanism is not fully understood. Here, we apply femtosecond broadband sum frequency generation vibrational spectroscopy to investigate molecular conformation spacer in perovskite films and establish a correlation among cations, charge carrier mobility, emission. Our study indicates that both mobility emission show strong dependence on conformational order...
Electrochemical CO2 reduction is a potential approach to convert into valuable chemicals using electricity as feedstock. Abundant and affordable catalyst materials are needed upscale this process in sustainable manner. Nickel-nitrogen-doped carbon (Ni-N-C) an efficient for CO, the single-site Ni-Nx motif believed be active site. However, critical metrics its catalytic activity, such site density intrinsic turnover frequency, so far lack systematic discussion. In work, we prepared set of...
Covalent triazine frameworks (CTFs) are a class of porous organic polymers that continuously attract growing interest because their outstanding chemical and physical properties. However, the control extended framework structures at molecular scale for precise adjustment properties has hardly been achieved so far. Here, we present series bipyridine-based CTFs synthesized through polycondensation, in which sequence specific building blocks is well controlled. The reported synthetic strategy...
Due to its highly developed pore structure and large specific surface area, activated carbon is often used as a catalyst or carrier in catalytic ozonation. Although the of plays significant role treatment wastewater mass transfer ozone molecules, effect complicated unclear. Because different application scenarios require catalysts with structures, appropriate characteristics should be developed. In this review, we systematically summarized current adjustment methods for carbon, including raw...
A novel solid polymer electrolyte based on chemically stable vinylene-linked covalent organic framework was developed, demonstrating enhanced Li + conductivity and improved battery performance.
Tailoring the band structure of a photocatalyst without causing significant changes in further properties and deriving unambiguous relationship between number charge carriers (CB-e– VB-h+) their reactivity photocatalytic reaction are very challenging, but highly important for rational catalyst design. In this work, semiquantitative relationships among structure, reactive carriers, yield hydroxyl (•OH) superoxide (•O2–) radicals, degradation rate oxalic acid as model pollutant have been...
Abstract Covalent organic frameworks (COFs) have emerged as an important class of semiconductors and photocatalysts for the hydrogen evolution reaction (HER)from water. To optimize their photocatalytic activity, typically moieties constituting are considered most suitable combinations them searched for. However, effect covalent linkage between these on performance has rarely been studied. Herein, we demonstrate that donor‐acceptor (D‐A) type imine‐linked COFs can produce with a rate high...
Sewage sludge as waste of the wastewater treatment process contains toxic substances, and its conversion into biochar-based catalysts is a promising strategy that merges merits reutilization environmental cleanup. This study aims to systematically recapitulate published articles on development in different advanced oxidation processes wastewater, including sulfate-based system, Fenton-like systems, photocatalysis, ozonation systems. Due abundant functional groups, metal phases unique...
Poly(3,4-ethylenedioxythiophene) (PEDOT) films were produced by chemical oxidative polymerization (in-situ PEDOT) and coating aqueous dispersion (slurry PEDOT). Sheet resistance measured before after heat treatment showed that slurry PEDOT film remained stable in air while in-situ degraded resulting a significant increase resistance. Excellent stability of was credited to its PEDOT-rich core, Poly(styrenesulfonic acid) (PSS)-rich shell structure, high molecular weight (Mw) PSS dopant the...
Abstract The ability to molecularly engineer materials is a powerful tool toward increasingly performing heterogeneous catalysts. Porous organic polymers stand out as photocatalysts due their high chemical stability, outstanding optoelectronic properties and easy tunable syntheses. In photocatalysis, the insertion of photosensitizing π‐extended molecules into well‐defined donor‐acceptor junctions supposed increase catalytic activity, but yet remain experimentally underdeveloped. This study...