A5065559320- Advanced Photocatalysis Techniques
- Advanced oxidation water treatment
- Iron oxide chemistry and applications
- Copper-based nanomaterials and applications
- Ammonia Synthesis and Nitrogen Reduction
- Porphyrin and Phthalocyanine Chemistry
- Advanced Nanomaterials in Catalysis
- Arsenic contamination and mitigation
- Electrocatalysts for Energy Conversion
- Electrochemical Analysis and Applications
- Photochemistry and Electron Transfer Studies
- Perovskite Materials and Applications
- Environmental remediation with nanomaterials
- Catalytic Processes in Materials Science
- Molecular Sensors and Ion Detection
- Transition Metal Oxide Nanomaterials
- Radical Photochemical Reactions
- Quantum Dots Synthesis And Properties
- Nanomaterials for catalytic reactions
- Metal-Organic Frameworks: Synthesis and Applications
- Nanoparticles: synthesis and applications
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Sulfur-Based Synthesis Techniques
- Anesthesia and Neurotoxicity Research
University of Chinese Academy of Sciences
2019-2024
Beijing National Laboratory for Molecular Sciences
2021-2024
Chinese Academy of Sciences
2021-2024
Institute of Chemistry
2023-2024
The water oxidation half-reaction at anodes is always considered the rate-limiting step of overall splitting (OWS), but actual bias distribution between photoanodes and cathodes photoelectrochemical (PEC) OWS cells has not been investigated systematically. In this work, we find that, for PEC consisting (nickel-modified
Accelerating proton transfer has been demonstrated as key to boosting water oxidation on semiconductor photoanodes. Herein, we study proton-coupled electron (PCET) of five typical photoanodes [i.e., α-Fe2O3, BiVO4, TiO2, plasmonic Au/TiO2, and nickel-iron oxyhydroxide (Ni1-xFexOOH)-modified silicon (Si)] by combining the rate law analysis H2O molecules with H/D kinetic isotope effect (KIE) operando spectroscopic studies. An unexpected universal half-order kinetics is observed for H2O,...
Photo(electro)catalytic chlorine oxidation has emerged as a useful method for chemical transformation and environmental remediation. However, the reaction selectivity usually remains low due to high activity non-selectivity characteristics of free radicals. In this study, we report photoelectrochemical (PEC) strategy achieving controlled non-radical activation on hematite (α-Fe
Abstract The redox mediated photoelectrochemical (PEC) or electrochemical (EC) alkene oxidation process is a promising method to produce high value‐added epoxides. However, due the competitive reaction of water and overoxidation mediator, utilization electricity far below ideal value, where loss epoxidation's faradaic efficiency (FE) ≈50%. In this study, Br − /HOBr‐mediated developed achieve near‐quantitative selectivity ≈100% FE styrene oxide on α‐Fe 2 O 3 , in which low concentration as...
The sluggish H2 O oxidation kinetics on photoanodes severely obstructs the overall solar-to-energy efficiency of photoelectrochemical (PEC) cells. Herein, we find a 10 to 55-fold increase photocurrent by conducting ammonia reaction (AOR) hematite (α-Fe2 O3 ) under near-neutral pH (9-11) and moderate applied potentials (1.0-1.4 VRHE compared oxidation. By rate law analysis operando spectroscopic studies, confirm non-radical nucleophilic attack NH3 molecules high-valent surface Fe-O species...
High-efficient photoelectrocatalytic direct ammonia oxidation reaction (AOR) conducted on semiconductor photoanodes remains a substantial challenge. Herein, we develop strategy of simply introducing ppm levels Cu ions (0.5-10 mg/L) into NH
Plasmonic photocatalysts have been emerging as a promising candidate for solar energy conversion and environmental remediation. However, those metallic plasmonic inevitably suffer from surface reconstruction corrosion under harsh reaction conditions, leading to low activity poor chemical photostability. Herein, we observe simultaneous improvement of both photostability on Au/TiO2 nanostructure-based photoanodes induced by an in situ plasmon-mediated electrochemical activation (PMEA)...
Constructing heterostructures have been demonstrated as an ideal strategy for boosting charge separation on plasmonic photocatalysts, but the detailed interface transfer mechanism remains elusive. Herein, that authors fabricate Au and metal-organic frameworks (MOFs, NH2 -MIL-125 MIL-125 used in this work) explore by situ electron paramagnetic resonance (EPR) spectroscopy electrochemical measurements. The plasmon-excited hot electrons can across Au/MOF be captured coordinatively unsaturated...
Sulfhydryl compounds effectively promote Fenton degradation through the establishment of –HS/–S–S cycle with hydroxyl radicals.
Hydroxybenzoic acids could act as a cocatalyst, enhancing the Fenton oxidation.
Cysteine which acts as a cocatalyst enhanced the competitive Fenton transformation of salicylic acid.
Abstract High‐efficient photoelectrocatalytic direct ammonia oxidation reaction (AOR) conducted on semiconductor photoanodes remains a substantial challenge. Herein, we develop strategy of simply introducing ppm levels Cu ions (0.5–10 mg/L) into NH 3 solutions to significantly improve the AOR photocurrent bare BiVO 4 from 3.4 6.3 mA cm −2 at 1.23 V RHE , being close theoretical maximum (7.5 ). The surface charge‐separation efficiency has reached 90 % under low bias 0.8 . This exhibits high...
Zinc oxide nanoparticles (ZnO NPs) are harmful because of the release cytotoxic Zn2+ during dissolution. The dissolution process ZnO NPs is affected by natural organic matter (NOM) in water environment. In this study, we investigated role carbonyl functional groups NOM isolates NPs. Sodium borohydride (NaBH4) can selectively reduce carbonyls NOM. We treated seven types NOMs with NaBH4. experimental results show that NaBH4 has a significantly reduced ability to dissolve A series model...
A tale of two metal ions: Cu-bicarbonate–H<sub>2</sub>O<sub>2</sub> efficiently degrades Congo red dye while the corresponding Mn system does not.
Abstract The sluggish H 2 O oxidation kinetics on photoanodes severely obstructs the overall solar‐to‐energy efficiency of photoelectrochemical (PEC) cells. Herein, we find a 10 to 55‐fold increase photocurrent by conducting ammonia reaction (AOR) hematite (α‐Fe 3 ) under near‐neutral pH (9–11) and moderate applied potentials (1.0–1.4 V RHE compared oxidation. By rate law analysis operando spectroscopic studies, confirm non‐radical nucleophilic attack NH molecules high‐valent surface Fe−O...