A5072068639- Advanced Photocatalysis Techniques
- Perovskite Materials and Applications
- Conducting polymers and applications
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- Carbon Nanotubes in Composites
- CO2 Reduction Techniques and Catalysts
- Supercapacitor Materials and Fabrication
- TiO2 Photocatalysis and Solar Cells
- Advanced Sensor and Energy Harvesting Materials
- Gas Sensing Nanomaterials and Sensors
- Advancements in Battery Materials
- Ionic liquids properties and applications
- Electrocatalysts for Energy Conversion
- Aluminum Alloys Composites Properties
- Chalcogenide Semiconductor Thin Films
- Graphene and Nanomaterials Applications
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Extraction and Separation Processes
- ZnO doping and properties
- Advanced Nanomaterials in Catalysis
- Copper-based nanomaterials and applications
- Advanced ceramic materials synthesis
- Iron oxide chemistry and applications
École Polytechnique Fédérale de Lausanne
2019-2025
Zhejiang University of Technology
2018-2024
Yanshan University
2018-2024
Qingdao University of Technology
2012-2023
Nanjing University of Posts and Telecommunications
2021-2023
Northeastern University
2021-2023
Shandong University of Technology
2023
North China Electric Power University
2019-2022
State Key Laboratory of Metastable Materials Science and Technology
2022
Shanghai University
2020
Developing efficient systems for the conversion of carbon dioxide to valuable chemicals using solar power is critical mitigating climate change and ascertaining world's future supply clean fuels. Here, we introduce a mesoscopic cathode consisting Cu nanowires decorated with Ag islands, by reduction Ag-covered Cu2O prepared via galvanic replacement reaction. This catalyst enables CO2 ethylene other C2+ products faradaic efficiency 76%. Operando Raman spectroscopy reveals intermediate...
Abstract Electrochemical reduction of carbon dioxide, if powered by renewable electricity, could serve as a sustainable technology for recycling and energy storage. Among all the products, ethanol is an attractive liquid fuel. However, maximum faradaic efficiency only ≈10 % on polycrystalline Cu. Here, CuZn bimetallic catalysts were synthesized in situ electrochemical ZnO‐shell/CuO‐core bi‐metal‐oxide. Dynamic evolution catalyst was revealed STEM‐EDS mapping, showing migration Zn atom...
Abstract Perovskite solar cells have reached a power conversion efficiency over 25%, and the engineering of interface between perovskite hole transport layer (HTL) has been crucial to achieve high performance. Here we design bifunctional molecule CBz-PAI with carbazole-triphenylamine phenylammonium iodide units passivate defects at perovskite/HTL interface. Owing favourable energy level alignment perovskite, acts as shuttle HTL. This minimizes difference quasi-Fermi splitting or ‘internal’ V...
Abstract The conversion of carbon dioxide to value-added products using renewable electricity would potentially help address current climate concerns. electrochemical reduction propylene, a critical feedstock, requires multiple C–C coupling steps with the transfer 18 electrons per propylene molecule, and hence is kinetically sluggish. Here we present electrosynthesis from on copper nanocrystals peak geometric density −5.5 mA cm −2 . metallic formed CuCl precursor preponderant Cu(100) Cu(111)...
The defects located at the interfaces and grain boundaries (GBs) of perovskite films are detrimental to photovoltaic performance stability solar cells. Manipulating crystallization process tailoring with molecular passivators main effective strategies mitigate loss instability. Herein, a new strategy is reported manipulate FAPbI3 -rich by incorporating small amount alkali-functionalized polymers into antisolvent solution. synergic effects alkali cations poly(acrylic acid) anion effectively...
By coupling Ti-doping and oxygen vacancies in hematite nanostructures, an efficient photoelectrode for solar water oxidation was prepared which showed a high photocurrent of 2.25 mA cm−2 at 1.23 V vs. RHE remarkable maximum value 4.56 1.6 relatively low activation temperature 550 °C. In addition, the partial pressure range suitable to produce Ti-doped could be expanded wide region compared that undoped hematite, critical production practical applications. The facile way by independently...
Graphene/metal nanoparticle (NP) composites have attracted great interest for various applications as catalysts, electrodes, sensors, etc., due to their unique structures and extraordinary properties. A facile synthesis of graphene/metal NP with good control size morphology metal NPs is critical the practical applications. simple method synthesize under a controllable manner via self-catalysis reduction at room temperature has been developed in this paper. At first, desirable were decorated...
Ultrasmall black phosphorus quantum dots (BPQDs) serve as the near-infrared light absorber and charge transfer layer in photocathode of a bifacial n-type dye sensitized solar cell. Wideband absorption ≈20% enhancement light-to-electron efficiency are accomplished due to fast carrier complementary by BPQDs demonstrating that BP has large potential photovoltaics. As service our authors readers, this journal provides supporting information supplied authors. Such materials peer reviewed may be...
Carbon-coated hematite nanostructures for solar water splitting were prepared by a simple pyrolysis of ferrocene which showed remarkable photocurrent 2.1 mA cm−2 at 1.23 V vs. RHE, compared to value 0.5 without the carbon layer. The layer is few nm thick covering surface nanostructures. X-Ray photoelectron spectroscopy and X-ray absorption revealed that electronic structure was significantly modified with existence oxygen vacancy, responsible photocurrent. plays an important role appearance...
Platinum-based bimetallic nanocatalysts have attracted much attention due to their high-efficiency catalytic performance in energy-related applications such as fuel cell and hydrogen storage, for example, the hydrolytic dehydrogenation of ammonia borane (AB). In this work, a simple green method has been demonstrated successfully prepare Pt–M (M = Fe, Co, Ni) NPs with tunable composition (nominal Pt/M atomic ratios 4:1, 1:1, 1:4) aqueous solution under mild conditions. All small size 3–5 nm...
Contamination commonly observed on the graphene surface is detrimental to its excellent properties and strongly hinders application. It still a great challenge produce large-area clean film in low-cost manner. Herein, we demonstrate facile scalable chemical vapor deposition approach synthesize meter-sized samples of superclean with an average cleanness 99 %, relying weak oxidizing ability CO2 etch away intrinsic contamination, i.e., amorphous carbon. Remarkably, elimination carbon enables...
α-Formamidinium lead iodide (α-FAPbI3 ) is one of the most promising candidate materials for high-efficiency and thermally stable perovskite solar cells (PSCs) owing to its outstanding optoelectrical properties high thermal stability. However, achieving a form α-FAPbI3 where both composition phase are pure very challenging. Herein, we report on combined strategy precursor engineering grain anchoring successfully prepare methylammonium (MA)-free phase-pure films. The incorporation volatile...
Copper catalysts modified with tin have been demonstrated to be selective for the electroreduction of carbon dioxide monoxide. However, such require precise control loading amount. Here, we develop a copper/tin-oxide catalyst dominant oxide surface being formed via spontaneous exchange reaction between sputtered and copper oxide. Even though this is tin-rich, it achieves an excellent performance towards monoxide production in flow cell. This contrasts prepared atomic layer deposition since...
We report on the preparation of MAPbBr3 perovskite films high electronic quality by applying a methylamine (MA) vapor treatment and mitigating surface defects using amphiphilic molecular passivator, neopentylammonium chloride (NPACl). find that post-treatment with effectively smooths perovskite, eliminating unwanted corrugations producing phase-pure pinhole free films. The subsequent coating NPACl eliminates deleterious states act as electron–hole recombination centers while enhancing...
Metal halide perovskites (MHPs) have shown an incredible increase in efficiency, reaching as high 25.7%, which now competes with traditional photovoltaic technologies. Herein, we excluded CsX and RbX (X = I–, Br–, Cl–), the most commonly used cations to stabilize α-FAPbI3, from bulk of perovskite thin films applied them on surface passivation agents. Extensive device optimization led a power conversion efficiency (PCE) 24.1% fill factor (FF) 82.2% upon CsI. We investigated depth effect CsI...