A5071494860- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Gas Sensing Nanomaterials and Sensors
- Perovskite Materials and Applications
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- CO2 Reduction Techniques and Catalysts
- Chemical Looping and Thermochemical Processes
- TiO2 Photocatalysis and Solar Cells
- ZnO doping and properties
- Covalent Organic Framework Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Ga2O3 and related materials
- Quantum Dots Synthesis And Properties
- Advanced battery technologies research
- Carbon Dioxide Capture Technologies
- Advanced Nanomaterials in Catalysis
- MXene and MAX Phase Materials
- Industrial Gas Emission Control
- 2D Materials and Applications
- Carbon dioxide utilization in catalysis
- Electronic and Structural Properties of Oxides
- Ionic liquids properties and applications
- Adsorption and Cooling Systems
- Ammonia Synthesis and Nitrogen Reduction
State Key Laboratory of Crystal Materials
2016-2025
Shandong University
2016-2025
Jiangsu University
2023-2024
PLA Army Engineering University
2004-2023
Tsinghua University
2017-2022
Shanghai Institute for Science of Science
2008
North Carolina State University
2008
Oxygen vacancies in crystal have important impacts on the electronic properties of ZnO. With ZnO(2) as precursors, we introduce a high concentration oxygen into ZnO successfully. The obtained exhibits yellow color, and absorption edge shifts to longer wavelength. Raman XPS spectra reveal that decreased when samples are annealed at higher temperature air. It is consistent with theory calculation. increasing results narrowing bandgap increases visible light can be confirmed by enhancement...
Visible improvements: Owing to the plasmon resonance of silver nanoparticles deposited on surface AgBr, newly-prepared plasmonic photocatalyst Ag section signAgBr has a strong absorption in visible region (see picture) and shows high efficiency photodegradation organic pollutants under light.
A simple one-step calcination route was used to prepare Ti3+ self-doped TiO2/g-C3N4 heterojunctions by mixture of H2Ti3O7 and melamine. X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution (HRTEM), photoelectron spectroscopy (XPS), spin resonance (ESR) spectroscopy, UV–Vis diffuse reflectance (UV–vis DRS) technologies were characterize the structure, crystallinity, morphology, chemical state as-prepared samples. The absorption prepared shifted a longer wavelength...
A novel Ag/AgBr/BiOBr hybrid was prepared by a rational in situ ion exchange reaction between BiOBr hierarchical microspheres and AgNO3 ethylene glycol followed light reduction, which displayed superior visible driven photocatalytic activities sterilization of pathogenic organism degradation organic dye compared to N-doped P25.
A facile and efficient photoreduction method is employed to synthesize the composite of methylammonium lead iodide perovskite (MAPbI3 ) with reduced graphene oxide (rGO). This MAPbI3 /rGO shown be an outstanding visible-light photocatalyst for H2 evolution in aqueous HI solution saturated . Powder samples (100 mg) show a rate 93.9 µmol h-1 , which 67 times faster than that pristine under 120 mW cm-2 (λ ≥ 420 nm) illumination, highly stable showing no significant decrease catalytic activity...
Cu2O microcrystals with well-formed facets were synthesized by a simple hydrothermal method. The surface stabilities and photocatalytic properties of systematically investigated. {100} {110} gradually disappear transform into nanosheets during the photodegradation methyl orange (MO) dye. With increase irradiation time, completely {111} facets. finally formed exhibit stable activities. On basis both experimental analysis theoretical calculations, novel model charge separation among crystal...
Effective CO2 capture and activation is a prerequisite step for highly efficient reduction. In this study, we reported case of Cu2+ in porphyrin based MOF promoted enhanced photocatalytic conversion to methanol. Compared with the sample without Cu2+, methanol evolution rate was improved as high 7 times. situ FT-IR results suggested that chemical adsorption over played an important role improving efficiency.
Surface-hydrogenated anatase TiO2 (TiO2–H) nanowire-microspheres were prepared by converting protonated titanate nanotube to TiO2–H under a hydrogen atmosphere. We show that have Ti–H and O–H bonds on their surface exhibit improved visible-light absorption highly enhanced photocatalytic activity.
Photodetectors with excellent detecting properties over a broad spectral range have advantages for the application in many optoelectronic devices. Introducing imperfections to atomic lattices semiconductors is significant way tuning bandgap and achieving broadband response, but imperfection may renovate their intrinsic far from desire. Here, by controlling deviation perfection of lattice, ultrabroadband multilayer MoS2 photodetectors are originally designed realized detection 2000 nm 445...
Three polymorphs of Bi2O3 were selectively synthesized via solution-based methods. The phase structures the as-prepared samples confirmed by X-ray powder diffraction (XRD) and photoelectron spectroscopy (XPS). UV-vis diffuse reflectance was employed to study optical properties polymorphs, band gaps estimated be 2.80, 2.48, 3.01 eV for α-Bi2O3, β-Bi2O3, δ-Bi2O3, respectively. photocatalytic performances oxides investigated decomposing methyl orange 4-chlorophenol under visible irradiation at...
An anion exchange strategy is explored to synthesize Bi2WO6 hollow microspheres based on the microscale Kirkendall effect. The as-prepared display high CO2 adsorption capacity and visible light photocatalytic conversion efficiency of into methanol without aid any co-catalyst.
Cu2O nanoparticles (NPs) enclosed with different crystal facets, namely, c-Cu2O NPs {100} o-Cu2O {111} and t-Cu2O both are prepared their electrocatalytic properties for the reduction of CO2 to C2H4 evaluated. It is shown that selectivity activity production depend strongly on facets exposed in NPs. The selectivities increases order, < t-Cu2O, (with FEC2H4 = 38%, 45%, 59%, respectively). This study suggests more likely responsible than metallic Cu produced surface work provides a new route...
Abstract Controlling amount of intrinsic S vacancies was achieved in ZnS spheres which were synthesized by a hydrothermal method using Zn and powders concentrated NaOH solution with NaBH 4 added as reducing agent. These efficiently extend absorption spectra to visible region. Their photocatalytic activities for H 2 production under light evaluated gas chromatograph the midgap states introduced examined density functional calculations. Our study reveals that concentration samples can be...
Crystal power! Libethenite, Cu2(OH)PO4 (see 4–5 μm×1.5 μm image), absorbs strongly in the near-infrared (NIR) region and is an effective photocatalyst for decomposition of 2,4-dichlorophenol aqueous solution under NIR irradiation. This activation due to a facile transfer photogenerated electrons from trigonal bipyramidal CuII sites adjacent octahedral sites.
Powder samples of mixed halide perovskite MAPbBr3–xIx (MA = methylammonium ion, CH3NH3+) were prepared by employing a facile light-assisted halide-exchange method in aqueous solution at room temperature. It is found that the distribution iodide ions particles tends to be largest on surface and becomes lower going into interior so they have correct bandgap funnel structure needed for transferring photogenerated charge carriers from surface. Consequently, MAPbBr3–xIx/Pt powder sample (250 mg)...
For traditional cycloaddition reaction between CO2 and epoxide, high temperature pressure are usually needed. In this work, we introduce Lewis acid Bi atom into the porphyrin ring of a metal–organic framework (MOF) structure (PCN-224) to facilitate ring-opening propylene oxide. addition, light is introduced reaction, which enables occur at ambient conditions (room 1 atm). Further investigations suggest that plays an essential role in improving efficiency, activates stable molecule lowers...
Abstract Selective CO 2 photoreduction to hydrocarbon fuels such as CH 4 is promising and sustainable for carbon‐neutral future. However, lack of proper binding strengths with reaction intermediates makes it still a challenge photocatalytic methanation both high activity selectivity. Here, low‐coordination single Au atoms (Au 1 ‐S ) on ultrathin ZnIn S nanosheets was synthesized by complex‐exchange route, enabling exceptional reduction performance. Under visible light irradiation, /ZnIn...
An organometal halide perovskite supported Pt single-atom photocatalyst is developed for efficient H 2 evolution with a superb STH of 4.50%.
Multicolor photoluminescence over the full visible color spectrum is critical in many modern science and techniques, such as full-color lighting, displays, biological chemical monitoring, multiband communication, etc., but ultimate white lasing especially on nanoscale still a challenge due to its exacting requirements balance of gain optical feedback at different wavelengths. Recently, 2D transition metal carbides (MXenes) have emerged, with some superior chemical, physical, environmental...