A5076151179- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Electronic and Structural Properties of Oxides
- Iron oxide chemistry and applications
- MXene and MAX Phase Materials
- Electrocatalysts for Energy Conversion
- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Catalytic Processes in Materials Science
- TiO2 Photocatalysis and Solar Cells
- Membrane Separation Technologies
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- Advanced battery technologies research
- Advancements in Battery Materials
- Transition Metal Oxide Nanomaterials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- CO2 Reduction Techniques and Catalysts
- ZnO doping and properties
- Supercapacitor Materials and Fabrication
- Ammonia Synthesis and Nitrogen Reduction
- Wastewater Treatment and Nitrogen Removal
- Ga2O3 and related materials
- Fuel Cells and Related Materials
Beijing University of Civil Engineering and Architecture
2020-2024
Beijing University of Technology
2020-2024
Nanjing University of Science and Technology
2014-2024
Nanjing University
2015-2024
Collaborative Innovation Center of Advanced Microstructures
2015-2024
Hankou University
2019-2024
Tangshan College
2023
Nanjing Tech University
2022-2023
Nanyang Technological University
2016-2020
South China Normal University
2020
Harnessing solar energy for the production of clean hydrogen fuels by a photoelectrochemical (PEC) cell represents very attractive but challenging alternative. This review focuses on recent developments some promising photoelectrode materials, such as BiVO4, a-Fe2O3, TaON, and Ta3N5 production. Some strategies have been developed to improve PEC performances including: (i) doping enhancing visible light absorption in wide bandgap semiconductor or promoting charge transport narrow...
The electronic band structure of a semiconductor photocatalyst intrinsically controls its level conduction (CB) and valence (VB) and, thus, influences activity for different photocatalytic reactions. Here, we report simple bottom-up strategy to rationally tune the graphitic carbon nitride (g-C3N4). By incorporating electron-deficient pyromellitic dianhydride (PMDA) monomer into network g-C3N4, VB position can be largely decreased gives strong photooxidation capability. Consequently, modified...
We present a surface corrosion method to shift the photocurrent onset potential cathodically for water oxidation on Ti4+ doped Fe2O3 by about 100 mV. After treatment, hematite photoanodes showed similar lowest values obtained loading with electrocatalysts or depositing functional over-layers. Moreover, cathodic of was preserved well even after long operating time. The results indicated effectiveness this simple treatment. In order make clear reason shift, samples before and were investigated...
Abstract Despite the fact that Ta 3 N 5 absorbs a major fraction of visible spectrum, rapid decrease photocurrent encountered in water photoelectrolysis over time remains serious hurdle for practical application photoelectrodes. Here, by employing Co O 4 nanoparticle oxidation catalyst (WOC) as well an alkaline electrolyte, photostability electrode is significantly improved. /Ta photoanode exhibits best durability against photocorrosion to date, when compared with Co(OH) x and IrO 2...
The sustainable production of chemicals and fuels from abundant solar energy renewable carbon sources provides a promising route to reduce climate-changing CO2 emissions our dependence on fossil resources. Here, we demonstrate solar-powered formate readily available biomass wastes feedstocks via photoelectrochemistry. Non-precious NiOOH/α-Fe2O3 Bi/GaN/Si wafer were used as photoanode photocathode, respectively. Concurrent photoanodic oxidation photocathodic reduction towards with high...
Hydrogen peroxide (H2O2) molecules play important roles in many green chemical reactions. However, the high activation energy limits their application efficiency, and there is still huge controversy about path of H2O2 over presence *OOH intermediates. Here, we confirmed formation key species heterogeneous system, via situ shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), isotope labeling, theoretical calculation. In addition, found that compared with *H2O2, was more...
Light-driven primary amine oxidation to imines integrated with H2 production presents a promising means simultaneous of high-value-added fine chemicals and clean fuels. Yet, the effectiveness this strategy is generally limited by poor charge separation photocatalysts uncontrolled hydrogenation secondary amines. Herein, spatial decoupling proposed isolate redox chemistry at distinct sites photocatalysts, CoP core–ZnIn2S4 shell (CoP@ZnIn2S4) coaxial nanorods are assembled as proof-of-concept...
With a theoretical maximum photocurrent of ca. 12.5 mA cm −2 under AM 1.5 G 100 mW irradiation, the presently achieved plateau about 0.6 on bare LaTiO 2 N photoanodes indicates presence serious charge transport limitations. Only recently, 4 was precious IrO modified prepared by rather expensive and complex method, without discussing intrinsic mechanism improved photocurrents. In this study, establishing highly crystalline porous particles superior inter‐particle connectivity with reduced...
Durability is one prerequisite for material application. Photoelectrochemical decomposition of seawater a promising approach to produce clean hydrogen by using solar energy, but it always faces the problem serious Cl- corrosion. We find that main deactivation mechanism photoanode oxide surface reconstruction accompanied coordination during splitting, and stability can be effectively improved enhancing metal-oxygen interaction. Taking metastable β-Fe2O3 as an example, Sn added lattice enhance...
Nanoporous structures facilitate the exposure of active sites and allow a high ratio space charge region to bulk in water-splitting photoelectrodes. However, unfavorable surface defects may develop on nanoporous photoelectrodes, which deteriorate band bending (built-in electric field) trigger serious carrier recombination. To maximize advantages one common strategy is introduction ultrathin overlayers passivate undesirable traps, usually require advanced deposition technologies such as...
To explore structure–activity relationships with respect to light-harvesting behavior, a family of bis-cyclometalated iridium complexes [Ir(C∧N)2(Hbpdc)] 2–5 (where C∧N = 2-phenylbenzothiazole and its functionalized derivatives, H2bpdc =2,2′-bipyridine-4,4′-dicarboxylate) was synthesized using facile method. The photophysical electrochemical properties these were investigated compared those analogue 1 (C∧N (4-trifluoromethyl)-2-phenylbenzothiazole); they also theoretically density functional...
In the past few decades, some novel low‐cost nanostructured devices have been explored for converting solar energy into electrical or chemical energy, such as organic photovoltaic cells, photoelectrochemical and water splitting cells. Generally, higher light absorption and/or charge separation efficiency are considered main reasons improved performance in a device versus planar structure. However, quantitative analysis definite experimental evidence remain elusive. Here, using BiVO 4 an...
Oxygen vacancies have different impacts on the charge transfer efficiency of pristine and Ti-doped hematite through active surface species.
VS4 anode materials with controllable morphologies from hierarchical microflower, octopus-like structure, seagrass-like structure to urchin-like have been successfully synthesized by a facile solvothermal synthesis approach using different alcohols as solvents. Their structures and electrochemical properties various are systematically investigated, the structure-property relationship is established. Experimental results reveal that Li+ ion storage behavior in significantly depends on...
Abstract Nonstoichiometric defects, as manifested by slight deviation of elemental compositions from chemical formulas, are common yet highly important in solid materials. Oxynitrides with a relatively large O/N ratio variation theoretically predicted to change their electronic structures and charge transport behaviors these nonstoichiometric defects. However, little experimental effort is devoted understanding the impact such defects regarding varied ratios oxynitrides for solar water...
Overall solar water splitting without external bias was demonstrated in this study using a photoelectrochemical tandem device of BiVO<sub>4</sub>photoanode and Si nanoarray photocathode.
Herein, we demonstrate a facile method to prepare hollow-structured oxygen-vacancy-rich Fe<sub>2</sub>O<sub>3</sub>/MnO<sub>2</sub> nanorods.