A5059413717- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Advanced oxidation water treatment
- Copper-based nanomaterials and applications
- Covalent Organic Framework Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Nanomaterials in Catalysis
- Electrochemical Analysis and Applications
- Environmental remediation with nanomaterials
- Perovskite Materials and Applications
- Nanomaterials for catalytic reactions
- Advanced biosensing and bioanalysis techniques
- Quantum Dots Synthesis And Properties
- Electronic and Structural Properties of Oxides
- Advanced battery technologies research
- Biosensors and Analytical Detection
- Ammonia Synthesis and Nitrogen Reduction
- TiO2 Photocatalysis and Solar Cells
- X-ray Diffraction in Crystallography
- Fuel Cells and Related Materials
- Electrospun Nanofibers in Biomedical Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Graphene research and applications
- Iron oxide chemistry and applications
Nankai University
2015-2024
State Key Laboratory of Pollution Control and Resource Reuse
2024
Tianjin University
2020
Xiamen Institute of Rare-earth Materials
2020
Zhaoqing University
2019
University of Notre Dame
2013-2014
Shandong University
2006
Abstract The activity of heterogeneous photocatalytic H 2 O activation in Fenton‐like processes is closely related to the local electron density reaction centre atoms. However, recombination electron‐hole pairs arising from random charge transfer greatly restricts oriented delivery active center. Here we show a defect engineered iron single atom photocatalyst (Fe 1 ‐N v /CN, Fe atoms dispersed on carbon nitride with abundant nitrogen vacancies) for under visible light irradiation. Based DFT...
Defects in nanomaterials often lead to properties that are absent their pristine counterparts. To date, most studies have focused on the effect of single defects, while ignoring synergy multiple defects. In this study, a model photocatalytic O2 activation was selected unravel role dual defects by decorating bismuth oxide with surface O vacancies and bulk substitution simultaneously. The introduction led spatial electronic synergistic process: i) induced local electric field BiO2-x , which...
TiO2–Bi2WO6 binanosheet (TBWO), synthesized by a facile two-step hydrothermal method, was used as an effective visible-light-driven photocatalyst for the inactivation of E. coli and characterized TEM, SEM, XRD, FTIR, XPS, BET. A series TBWOs with different doping ratios TiO2 loading from 10 to 55 wt % were synthesized. Among all TBWOs, 40% TBWO exhibited best bacteria disinfection efficiency, quantity viable could reach 10° (100 μg/mL) after being illuminated 4 h. Furthermore, confocal...
Ag-CoFe2O4-graphene oxide (Ag-CoFe2O4-GO) nanocomposite was synthesized by doping silver and CoFe2O4 nanoparticles on the surface of GO, which used to purify both bacteria Pb(II) contaminated water. The Ag-CoFe2O4-GO nanomaterial characterized transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman, photoelectron (XPS), Brunauer-Emmett-Teller (BET), cyclic voltammetry (CV), magnetic property tests. It can be found that exhibited...
A highly efficient Z-scheme photocatalytic system constructed with 1D CdS and 2D CoS2 exhibited high hydrogen-evolution activity of 5.54 mmol h-1 g-1 an apparent quantum efficiency 10.2 % at 420 nm. More importantly, its interfacial charge migration pathway was unraveled: The electrons are efficiently transferred from to through a transition atomic layer connected by Co-S5.8 coordination, thus resulting in more photogenerated carriers participating surface reactions. Furthermore, the...
Due to environmentally friendly operation and on-site productivity, electrocatalytic singlet oxygen (1O2) production via O2 gas is of immense interest in environment purification. However, the side-on configuration on catalysts surface will lead formation H2O, which seriously limits selectivity activity 1O2 production. Herein, we show a robust N-doped CuO (N-CuO) with Pauling-type (end-on) adsorption at N-Cu-O3 sites for selective generation under direct-current electric field. We propose...
In heterogeneous catalysis, uncovering the dynamic evolution of active sites in working conditions is crucial to realizing increased activity and enhanced stability catalyst Fenton-like activation. Herein, we capture changes unit cell Co/La-SrTiO3 during exemplary peroxymonosulfate activation process using X-ray absorption spectroscopy situ Raman spectroscopy, revealing substrate tuned its structural evolution, which reversible stretching vibration O-Sr-O Co/Ti-O bonds different...
Abstract Single‐atom CoN 4 active sites have demonstrated excellent efficiency in peroxymonosulfate activation. However, the identification of and detailed singlet oxygen generation mechanism activation remains ambiguous. We demonstrate a strategy to regulate reactive species by atomically dispersed cobalt anchored on nitrogen‐doped carbon. As indicated experiment DFT calculations, 2+2 was site predominant with proportion 98.89 %. Spontaneous dissociation adsorbed energetically unfavorable...
The unexpected phenomenon and mechanism of the alkali metal involved NH3 selective catalysis are reported. Incorporation K+ (4.22 wt %) in tunnels α-MnO2 greatly improved its activity at low temperature (50-200 °C, 100 % conversion NOx vs. 50.6 over pristine 150 °C). Experiment theory demonstrated atomic role incorporated . Results showed that could form a stable coordination with eight nearby O sp3 atoms. columbic interaction between trapped atoms can rearrange charge population Mn atoms,...
A heterogeneous catalyst in industry consists of nanoparticles with variable crystallite sizes, shapes, and compositions. Its catalytic performance (activity, selectivity, durability) derives from surface chemistry during catalysis. However, the particles catalysis, termed in-situ information, is a "black box" because challenges characterizing catalysts The lack such information about has limited understanding mechanisms development high selectivity activity. catalysis include measurement...
Significance As the dielectric confinement effects in ultrathin two-dimensional photocatalysts, excitonic originating from Coulomb interactions between photogenerated electrons and holes can be significantly promoted, which would endow systems with distinct photoexcitation scenarios. A significant challenge is achieving nontrivial regulation, especially for inorganic semiconductors, to efficiently use solar energy. This research presents a strategy of modifications both electronic surface...
Abstract The implementation of carbon neutrality to achieve the goal controlling global warming in Paris Climate Agreement is currently most important international climate issue. Efficient utilization solar energy through photocatalysts great significance adjustment structure. Single‐atom have excellent catalytic activity and selectivity a variety applications, including sustainable conversion, chemical synthesis, CO 2 reduction, environmental remediation, other areas, owing their unique...
As a promising environmental remediation technology, the electro-Fenton (EF) process is mainly limited by two rate-limiting steps, which are H 2 O generation and activation. The electrocatalytic three-electron oxygen reduction reaction (3e − ORR) can directly activate to hydroxyl radicals (•OH), expected break through steps of EF process. However, success has been achieved in design 3e ORR electrocatalysts. Herein, we propose Cu/CoSe /C with strong metal–support interactions enhance process,...
Efficient photocatalytic H2 production from wastewater instead of pure water is a dual solution to the environmental and energy crisis, but due rapid recombination photoinduced charge in photocatalyst inevitable electron depletion caused by organic pollutants, significant challenge dual-functional photocatalysis (simultaneous oxidative reductive reactions) single catalyst designing spatial separation path for photogenerated charges at atomic level. Here, we designed Pt-doped BaTiO3 with...