A5008626978- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- CO2 Reduction Techniques and Catalysts
- Copper-based nanomaterials and applications
- Luminescence and Fluorescent Materials
- Advanced battery technologies research
- Synthesis and Properties of Aromatic Compounds
- Liquid Crystal Research Advancements
- Ionic liquids properties and applications
- Perovskite Materials and Applications
- Photoreceptor and optogenetics research
- Physics of Superconductivity and Magnetism
- Supramolecular Self-Assembly in Materials
- Rare-earth and actinide compounds
- Luminescence Properties of Advanced Materials
- Photochromic and Fluorescence Chemistry
- Advanced Materials and Mechanics
- 2D Materials and Applications
- Nanocluster Synthesis and Applications
- Nanomaterials for catalytic reactions
- Molecular Sensors and Ion Detection
- Carbon dioxide utilization in catalysis
- Advanced Nanomaterials in Catalysis
University of Science and Technology of China
2014-2024
Hefei National Center for Physical Sciences at Nanoscale
2015-2024
University of Toronto
2017-2022
Hefei University of Technology
2022
Southern University of Science and Technology
2022
Technical University of Denmark
2022
National Synchrotron Radiation Laboratory
2012-2022
Chinese Academy of Sciences
2022
Collaborative Innovation Center of Chemistry for Energy Materials
2021-2022
Toronto Public Health
2017
In hydrogen production, the anodic oxygen evolution reaction (OER) limits energy conversion efficiency and also impacts stability in proton-exchange membrane water electrolyzers. Widely used Ir-based catalysts suffer from insufficient activity, while more active Ru-based tend to dissolve under OER conditions. This has been associated with participation of lattice (lattice oxidation mechanism (LOM)), which may lead collapse crystal structure accelerate leaching Ru species, leading low...
Charging into epoxides Ethylene oxide is a strained, reactive molecule produced on vast scale as plastics precursor. The current method of synthesis involves the direct reaction ethylene and oxygen at high temperature, but original protocol relied reduction chlorine to produce chlorohydrin intermediate. Leow et al. report room temperature that returns route uses electrochemistry generate it catalytically from chloride (see Perspective by Barton). This efficient process water in place can be...
Abstract Producing liquid fuels such as ethanol from CO 2 , H O, and renewable electricity offers a route to store sustainable energy. The search for efficient electrocatalysts the reduction reaction relies on tuning adsorption strength of carbonaceous intermediates. Here, we report complementary approach in which utilize hydroxide oxide doping catalyst surface tune adsorbed hydrogen Cu. Density functional theory studies indicate that this accelerates water dissociation changes energy We...
Efficient wide-bandgap perovskite solar cells (PSCs) enable high-efficiency tandem photovoltaics when combined with crystalline silicon and other low-bandgap absorbers. However, PSCs today exhibit performance far inferior to that of sub-1.6-eV bandgap due their tendency form a high density deep traps. Here, we show healing the traps in perovskites-in effect, increasing defect tolerance via cation engineering-enables further improvements PSCs. We achieve stabilized power conversion efficiency...
The electrochemical reduction of carbon monoxide is a promising approach for the renewable production carbon-based fuels and chemicals. Copper shows activity toward multi-carbon products from CO reduction, with reaction selectivity favoring two-carbon products; however, efficient conversion to higher such as n-propanol, liquid fuel, has yet be achieved. We hypothesize that copper adparticles, possessing high density under-coordinated atoms, could serve preferential sites n-propanol...
Nations, industries, and aspects of everyday life have undergone forgery counterfeiting ever since the emergence commercialization. Securing documents products with anticounterfeit additives shows promise for authentication, allowing one to combat ever-increasing global counterfeiting. One most-used effective encryption strategy is combine optical-security markers on required protection objects; however, state-of-the-art labels still suffer from imitation due their poor complexity easy...
Endowing three-dimensional (3D) displays with flexibility drives innovation in the next-generation wearable and smart electronic technology. Printing circularly polarized luminescence (CPL) materials on stretchable panels gives chance to build desired flexible stereoscopic displays: CPL provides unusual optical rotation characteristics achieve considerable contrast ratio wide viewing angle. However, lack of printable, intense suitable for processing hinders implementation 3D devices. Here,...
Abstract Colorful circularly polarized luminescence materials are desired for 3D displays, information security and asymmetric synthesis, in which single-emitted ideal owing to self-absorption avoidance, evenly entire-visible-spectrum-covered photon emission facile device fabrication. However, restricted by the synthesis of chiral broad-luminescent emitters, realization application high-performing full-color is its infancy. Here, we disclose a system (spiral generator), composed...
Nickel (Ni)-based nanomaterials have been intensively explored as promising noble-metal-free hydrogen evolution reaction (HER) electrocatalysts. Here, we report that uniform sea urchin-like NiSe nanofiber assemblies can be prepared on a large scale by ternary mixed solvent strategy. The new exhibits very high HER activity in 0.5 M H2SO4, comparable to the best performance of well-studied MoS2 catalysts. Tafel slope ∼64 mV per decade was observed for catalyst, suggesting Volmer–Heyrovsky...
Abstract The full harvest of solar energy by semiconductors requires a material that simultaneously absorbs across the whole spectrum and collects photogenerated electrons holes separately. stepwise integration three semiconducting sulfides, namely ZnS, CdS, Cu 2− x S, into single nanocrystal, led to unique ternary multi‐node sheath ZnS–CdS–Cu S heteronanorod for full‐spectrum absorption. Localized surface plasmon resonance (LSPR) in nonstoichiometric copper sulfide nanostructures enables...
Abstract It has been a long‐standing demand to design hetero‐nanostructures for charge‐flow steering in semiconductor systems. Multi‐component nanocrystals exhibit multifunctional properties or synergistic performance, and are thus attractive materials energy conversion, medical therapy, photoelectric catalysis applications. Herein we report the synthesis of binary ternary multi‐node sheath hetero‐nanorods sequential chemical transformation procedure. As verified by first‐principles...
Abstract Multi-carbon alcohols such as ethanol are valued fuels in view of their high energy density and ready transport. Unfortunately, the selectivity toward CO 2 /CO electroreduction is diminished by ethylene production, especially when operating at current densities (>100 mA cm −2 ). Here we report a metal doping approach to tune adsorption hydrogen copper surface thereby promote alcohol production. Using functional theory calculations, screen suite transition dopants find that...
Application of pseudohalogens in colloidal quantum dot (CQD) solar-cell active layers increases the performance by reducing trap densities and implementing thick CQD films. Pseudohalogens are polyatomic analogs halogens, whose chemistry allows them to substitute halogen atoms strong chemical interactions with surfaces. The pseudohalide thiocyanate anion is used achieve a hybrid surface passivation. A fourfold reduced state density than control observed using suite field-effect transistor...
Abstract Although solar-driven water splitting on semiconductor photocatalysts is an attractive route for hydrogen generation, there a lack of excellent with high visible light activity. Due to their tunable bandgaps suitable superior visible-light absorption, copper-based quaternary sulfides have been the important candidates. Here, we first assessed preferred facet wurtzite Cu-Zn-In-S photocatalytic evolution reaction using relevant Gibbs free energies determined by principle calculation....
We explore the selective electrocatalytic hydrogenation of lignin monomers to methoxylated chemicals, particular interest, when powered by renewable electricity. Prior studies, while advancing field rapidly, have so far lacked needed selectivity: hydrogenating lignin-derived cyclohexanes, desired methoxy group (−OCH3) has also been reduced. The ternary PtRhAu electrocatalysts developed herein selectively hydrogenate cyclohexanes—molecules with uses in pharmaceutics. Using X-ray absorption...
Electrochemical generation of hydrogen peroxide (H2 O2 ) by two-electron oxygen reduction offers a green method to mitigate the current dependence on energy-intensive anthraquinone process, promising its on-site applications. Unfortunately, in alkaline environments, H2 is not stable and undergoes rapid decomposition. Making acidic electrolytes can prevent decomposition, but choices active, stable, selective electrocatalysts are significantly limited. Here, efficient toward acid composite...