A5010471250- Carbon and Quantum Dots Applications
- Electrocatalysts for Energy Conversion
- Luminescence and Fluorescent Materials
- Nanocluster Synthesis and Applications
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Ammonia Synthesis and Nitrogen Reduction
- Perovskite Materials and Applications
- Graphene research and applications
- Synthesis and Properties of Aromatic Compounds
- Electrochemical Analysis and Applications
- Luminescence Properties of Advanced Materials
- Advanced Memory and Neural Computing
- Nanomaterials for catalytic reactions
- Hydrogen Storage and Materials
- Covalent Organic Framework Applications
- MXene and MAX Phase Materials
- CO2 Reduction Techniques and Catalysts
- Photonic Crystals and Applications
- Catalytic Processes in Materials Science
- Chalcogenide Semiconductor Thin Films
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Synthesis and characterization of novel inorganic/organometallic compounds
Zhengzhou University
2019-2025
Henan Polytechnic University
2019-2020
Abstract Ultrathin two‐dimensional catalysts are attracting attention in the field of electrocatalytic hydrogen evolution. This work describe a composite material design which CoP nanoparticles doped with Ru single‐atom sites supported on carbon dots (CDs) single‐layer nanosheets formed by splicing CDs (Ru 1 CoP/CDs). Small CD fragments bore abundant functional groups, analogous to pieces jigsaw puzzle, and could provide high density binding immobilize CoP. The single‐particle‐thick acted as...
Abstract Light‐emitting chiral carbonized polymer dots (Ch‐CPDs) are attracting great interest because of their extraordinary photonic properties, but modulating band‐gap emission, especially at long wavelength, and maintaining structure to achieve multicolor, high‐emission Ch‐CPDs remains challenging. Reported here for the first time is synthesis red‐ multicolor‐emitting using common precursors L ‐/ D ‐tryptophan o ‐phenylenediamine, a solvothermal approach one temperature. The quantum...
Abstract Designing a stable and efficient dual‐functional catalyst for the hydrogen evolution oxygen reactions (HER/OER) is of great significance to development production by water splitting. This work reports on novel halogen (X = F, Cl, Br)‐doped carbon dots modifying amorphous cobalt phosphide (X‐CDs/CoP), which can be tuned choice X‐CDs have urchin, Pinus bungeana , Albizia julibrissin type structures. The different characteristics various led formation mechanisms final As bifunctional...
Abstract Oxygen evolution reaction catalysts capable of working efficiently in acidic media are highly demanded for the commercialization proton exchange membrane water electrolysis. Herein, we report a Zn-doped RuO 2 nanowire array electrocatalyst with outstanding catalytic performance oxygen under conditions. Overpotentials as low 173, 304, and 373 mV achieved at 10, 500, 1000 mA cm −2 , respectively, robust stability reaching to h 10 . Experimental theoretical investigations establish...
Abstract Due to the complex core–shell structure and variety of surface functional groups, photoluminescence (PL) mechanism carbon dots (CDs) remain unclear. o-Phenylenediamine (oPD), as one most common precursors for preparing red emissive CDs, has been extensively studied. Interestingly, emission CDs based on oPD have similar PL characteristics. Herein, we prepared six different oPD-based found that they had almost same absorption spectra after purification. Structural spectral...
Carbon dots (CDs) find widespread attention due to their remarkable fluorescent and electronic properties. However, aggregation-caused quenching currently limits the application of CDs in colored displays. The construction with color-tunable solid-state fluorescence (SSF) is rarely reported, since preparation SSF technically challenging. Herein, through surface ligand modulation, an emission-color span almost 300 nm (from blue deep red) were obtained. In-depth structure-property studies...
Comprehensive Summary Solid‐state fluorescent multi‐color carbon dots (SFM‐CDs), prepared using the same precursor(s) without need for dispersion in a solid matrix, are highly demanded wide range of applications. Herein, we report microwave‐assisted strategy preparation SFM‐CDs with blue, yellow and red emissions within 5 min from precursors. The as‐prepared B‐CDs, Y‐CDs, R‐CDs possessed bright fluorescence at 425 nm, 550 640 photoluminescence quantum yields (PLQYs) 54.68%, 17.93%, 2.88%,...
Abstract As a new solution‐processable laser material, carbon dots (CDs) offer advantages of non‐toxicity, low‐cost, and high‐stability, which are conducive to the sustainable development miniaturized lasers. Full‐color CDs (FC‐CDs) with bright‐blue, green, yellow, red, deep‐red, near‐infrared (NIR) fluorescence prepared. Their photoluminescence emission ranges from 431 714 nm. The FC‐CDs show narrow full widths at half maximum in range 44–76 nm, concurrent high radiative transition rates (...
Abstract Carbon dots (CDs)—carbon nanoparticles smaller than 10 nm—have attracted widespread attention owing to their excellent optical properties. However, high‐performing CDs often suffer from severe aggregation‐induced quenching in the solid state, which limits commercial applicability. Therefore, CD materials with efficient solid‐state luminescence are sought. As research on structure and photoluminescence mechanisms of has intensified recent years, strategies construct fluorescent tune...
The discovery of acid-stable and highly active electrocatalysts for the oxygen evolution reaction (OER) is crucial in quest high-performance water-splitting technologies. Herein, a heterostructured RuO2–CeO2 electrocatalyst was constructed by using lattice-matching strategy. interfacial Ru–O–Ce bridge structure provided channel electron transfer between Ru Ce, creating lattice stress that distorts local RuO2. resulting catalyst exhibited attractive stability with negligible decay after 1000...
Abstract It is challenging to realize ultra‐pH‐responsive fluorescent carbon dots (CDs), especially reversibly adjustable multichromatic emission covering a broad wavelength range including deep‐red lasing. This study reports one‐step solvothermal treatment of pyrogallol obtain brilliant CDs with substantial bathochromic shift (from blue dark red emission) induced by pH changes. The show an excellent reversible response: simple acid instantaneously shifts their initial green 140 nm...
Carbon dots (CDs) are widely utilized in sensing, energy storage, and catalysis due to their excellent optical, electrical semiconducting properties. However, attempts optimize optoelectronic performance through high-order manipulation have met with little success date. In this study, efficient packing of individual CDs two-dimensions, the synthesis flexible ribbons is demonstrated technically. Electron microscopies molecular dynamics simulations, show assembly into results from tripartite...
High-power phosphor-converted white light-emitting diodes (hp-WLEDs) have been widely involved in modern society as outdoor lighting sources. In these devices, due to the Joule effect, high applied currents cause operation temperatures (>500 K). Under conditions, most phosphors lose their emission, an effect known thermal quenching (TQ). Here, we introduce a zero-dimensional (0D) metal halide, Rb3InCl6:xSb3+, suitable anti-TQ phosphor offering robust behavior up 500 K. We ascribe this of...
The Ru supported on Porphyra-CQDs exhibited better dispersibility and the highest activity compared with biomass Porphyra activated carbon owing to strong coordination interactions between CQDs.
The development of clean fuels for hydrogen utilization will benefit from low-cost and active catalysts to produce via hydrolytic dehydrogenation by electrochemical chemical means. Herein, we designed synthesized a high-efficiency stable catalyst with low-ruthenium content CoRu alloy nanoparticles supported on porous nitrogen-doped graphene layers (CoRux@N-C) pyrolysis small organic metal molecules. amount ruthenium in the that showed highest activity was only 5.07 wt %. CoRu0.25@N-C can...
Miniaturized solid-state lasers with a single longitudinal mode are vital for various photonic applications. Here we prepare red-emissive carbon dots (CDs) photoluminescence quantum yield (PLQY) of 65.5 % by combining graphitic nitrogen doping and surface modification. High-concentration alters the CDs' emission from blue to red, while electron-donating groups polymer coating on their surfaces improve PLQY photostability. The CDs exhibit excellent stimulated characteristics, low threshold...
Hydrogen is an ideal clean, nontoxic, and abundant energy carrier with incomparable potential development value. At present, the electrochemical hydrogen evolution reaction (HER) release of from storage materials [e.g., ammonia borane (AB)] are two most promising clean efficient production methods. The a catalyst suitable for both processes will reduce use resources achieve goals one product. Although many catalysts have been studied to promote these reactions, unified reactions rarely...