A5011987948- Advanced Photocatalysis Techniques
- Quantum Dots Synthesis And Properties
- Carbon and Quantum Dots Applications
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Graphene research and applications
- MXene and MAX Phase Materials
- Nanocluster Synthesis and Applications
- Ga2O3 and related materials
- Luminescence and Fluorescent Materials
- Advanced Condensed Matter Physics
Huaiyin Institute of Technology
2017-2024
University of Hong Kong
2019
City University of Hong Kong
2017
Nanjing Normal University
2017
Carbon nanomaterials with variable bandgaps exhibit wide spectral absorption, and photoluminescent nanodots have attracted much interest. In this work, carbon (CNDs) are grafted onto the surface of TiO2 nanotubes to enhance photocatalytic properties. The CNDs increase light trap shuttle photo-generated electrons, pollutant adsorptivity. addition, synergistic photothermal effect CNDs-based nanocomposite facilitates photocatalysis. nanocomposites improved performance efficient characteristics...
Luminescent carbon nanodots (CDs) are attracting great interests due to their unique properties in physics and chemistry. In this study we present the experimental evidences of significant roles self–absorption radiative energy transfer photoluminescence process N–doped CDs water. It is found that PL spectra, especially relative intensity between UV visible bands, which major spectral structures, show a distinctive dependence on concentrations CDs, can be well understood with well–known...
The photocatalytic reduction of CO2 into hydrocarbons is a promising solution for the energy crisis and greenhouse gas emissions. Thus, fabrication development new type photocatalyst great importance practical application reduction. Herein, we report facile synthesis Zn2SnO4 (ZTO) microspheres doped with Co3+ ions or Ni3+ ions. Co3+/Ni3+ substitute lattice Zn/Sn DFT calculations experimental results reveal that would induce doping levels in band gap, extend light response from UV to visible...
The Sb2WO6 photocatalyst is synthesized by introducing oxygen vacancies through acetylene annealing. number of can be adjusted varying the annealing duration. Oxygen vacancy defects in change surface chemical properties, enhance separation carriers, broaden absorption visible light, and activate catalytic sites, resulting overall enhancement photocatalytic properties. significance pertinent mechanisms oxidation are described. Our results reveal a promising method to improve properties...
To enhance the optical and catalytic properties of TiO2, carbon nanodots (CNDs) are incorporated to prepare hybrid CNDs/TiO2 materials with different precursor concentrations photocatalytic characteristics evaluated systematically. When excited optically, some high-energy photons reabsorbed by those in lower energy states, indicating that photon reabsorption CNDs plays a key role. The results enrich our understanding mechanisms provide insight into design CNDs-based composites.
In this work, we used a template-free method to synthesize zinc sulfide (ZnS) materials. The photocatalytic performances of the samples were evaluated, and physical natures ZnS nanocrystals determined by photoluminescence (PL). Interestingly, temperature-dependent PL variations very different in connection with synthesis condition. Combined series catalytic experiments, it suggested that intrinsic self-absorption photon recycling play key roles photocatalysis. This work gives new idea for...
Zinc oxide (ZnO) is an attractive material for gas sensors, and various ZnO-based sensors have been developed to detect pollution. In this work, a series of SiC/ZnO composites were fabricated by incorporating silicon carbide nanocrystals (SiC NCs) into ZnO microspheres grinding method. The composite exhibited significantly enhanced sensitivity response toward NO in comparison ZnO. test revealed that the was 251.1 100 ppm nitrogen monoxide (NO), detection limit as low ppb. Through spectral...
For the first time, Ti3C2/Ag2O/La(OH)3 nanocomposites were successfully synthesized. The La(OH)3 nanorods and Ag2O particles closely dispersed on Ti3C2 organ-like nanostructure’s surface. introduction of MXene not only extended visible-light response but also generated more charge carriers. addition nanoparticles facilitated separation transfer electrons. visible photocatalytic activity for was significantly enhanced MB (methylene blue) degradation. This superior owing to MXene. study...