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Y3Al5O12:Ce (YAG:Ce) phosphors are extensively used in the field of white light‐emitting diodes (LEDs) due to their efficient luminescent properties. To optimize the performance of YAG:Ce phosphors, a comprehensive understanding of their synthesis and structural evolution is essential. This paper presents a direct in situ transmission electron microscopy (TEM) /scanning TEM (STEM) investigation on...
The design and fabrication of NO‐evolving core‐shell nanoparticles (denoted as NC@Fe), comprised of BNN6‐laden COF@Fe3O4 nanoparticles, are reported. This innovation extends to the modification of 3D printed polyetheretherketone scaffolds with NC@Fe, establishing a pioneering approach to multi‐modal bone therapy tailored to address complications such as device‐associated infections and osteomyelitis...
Diabetic chronic wounds pose significant clinical challenges due to their characteristic features of impaired extracellular matrix (ECM) function, diminished angiogenesis, chronic inflammation, and increased susceptibility to infection. To tackle these challenges and provide a comprehensive therapeutic approach for diabetic wounds, the first coaxial electrospun nanocomposite membrane is developed...
The development of advanced and efficient synthetic methods is pivotal for the widespread application of 2D materials. In this study, a facile and scalable solvent‐free mechanochemical approach is approached, employing graphene quantum dots (GQDs) as exfoliation agents, for the synthesis and functionalization of nearly atom‐layered MoS2 nanosheets (ALMS). The resulting ALMS exhibits an ultrathin average...
Carbon Dot Electrocatalysts
In article number 2303156, Zhendong Lei, Zheng Liu, Liang Wang, and co‐workers establish an innovative and scalable solvent engineering strategy to fabricate oxygen‐doped carbon dots, resulting in an exceptional electrocatalysis H2O2 productivity yield of 111.18 mg h−1 cm−2 in a flow cell for a duration of 10 hours.
The development of cost‐effective and reliable metal‐free carbon‐based electrocatalysts has gained significant attention for electrochemical hydrogen peroxide (H2O2) generation through a two‐electron oxygen reduction reaction. In this study, a scalable solvent engineering strategy is employed to fabricate oxygen‐doped carbon dots (O‐CDs) that exhibit excellent performance as electrocatalysts. By adjusting...
Noncovalent modification of carbon materials with redox‐active organic molecules has been considered as an effective strategy to improve the electrochemical performance of supercapacitors. However, their low loading mass, slow electron transfer rate, and easy dissolution into the electrolyte greatly limit further practical applications. Herein, this work reports dual molecules (1,5‐dihydroxyanthraquinone...
An investigation is presented into the effect of the long‐range order on the optoelectronic properties of PbS quantum dot (QD) superlattices, which form mesocrystals, for potential use in photodetector applications. By self‐assembly of QD nanocrystals on an Si/SiOx substrate, a highly ordered and densely packed PbS QD superlattice with a microscale size is obtained. The results demonstrate that annealing...
Thermochromic smart windows with rational modulation in indoor temperature and brightness draw considerable interest in reducing building energy consumption, which remains a huge challenge to meet the comfortable responsive temperature and the wide transmittance modulation range from visible to near‐infrared (NIR) light for their practical application. Herein, a novel thermochromic Ni(II) organometallic...
Developing efficient and robust metal–nitrogen–carbon electrocatalysts for oxygen reduction reaction (ORR) is of great significance for the application of hydrogen–oxygen fuel cells and metal–air batteries. Herein, a coordination engineering strategy is developed to improve the ORR kinetics and stability of cobalt–nitrogen–carbon (Co–N–C) electrocatalysts by grafting the oxygen‐rich graphene quantum...
Developing low‐cost and efficient oxygen evolution electrocatalysts is key to decarbonization. A facile, surfactant‐free, and gram‐level biomass‐assisted fast heating and cooling synthesis method is reported for synthesizing a series of carbon‐encapsulated dense and uniform FeNi nanoalloys with a single‐phase face‐centered‐cubic solid‐solution crystalline structure and an average particle size of...
Exploring catalyst reconstruction under the electrochemical condition is critical to understanding the catalyst structure–activity relationship as well as to design effective electrocatalysts. Herein, a PbF2 nanocluster is synthesized and its self‐reconstruction under the CO2 reduction condition is investigated. F− leaching, CO2‐saturated environment, and application of a cathodic potential induce...
Layered metal chalcogenides, as a “rich” family of 2D materials, have attracted increasing research interest due to the abundant choices of materials with diverse structures and rich electronic characteristics. Although the common metal chalcogenide phases such as 2H and 1T have been intensively studied, many other unusual phases are rarely explored, and some of these show fascinating behaviors including...
For expanding the applications of 2D transition metal dichalcogenides (TMDCs), integrating functional devices with diverse conduction polarities in the same parent material is a very promising direction. Improving the contact issue at the metal‐semiconductor interface also holds fundamental significance. To achieve these concurrently, step‐like Cr2S3 vertical stacks with varied thicknesses are achieved...
Heterostructures for charge‐carrier manipulation have laid the foundation of modern optoelectronic devices, such as photovoltaics and photodetectors. High‐performance heterostructure devices usually impose stringent requirements on the material quality to sustain efficient carrier transport and charge transfer, thus leading to sophisticated fabrication processes. Here, a simple yet efficient strategy...
GaTe has recently attracted significant interest due to its direct bandgap and unique phase structure, which makes it a good candidate for optoelectronics. However, the controllable growth of large‐sized monolayer and few‐layer GaTe with tunable phase structures remains a great challenge. Here the controlled growth of large‐sized GaTe with high quality, chemical uniformity, and good reproducibility...
Organic–inorganic hybrid perovskites have been considered as promising gain materials for lasing. Despite previous reports of lasing from nanocrystals, thin films and single crystals, the stability of perovskite lasers has been a challenge for its practical applications. Herein, a scalable strategy to prepare ultrastable perovskite@polymer hybrid fibers by employing a facile emulsion electrospinning...
The relatively high recombination rate of charges remains the most critical limiting factor for solar‐driven water splitting for hydrogen generation. Herein, a tandem 0D/2D/2D NbS2 quantum dot/Nb2O5 nanosheet/g‐C3N4 flake (NSNOCN) system is designed. Owing to the unique spatial‐arrangement and elaborate morphology of 0D NbS2, 2D Nb2O5, and 2D g‐C3N4 in the newly designed NSNOCN, plenty of spatial...
Tin (Sn) is considered to be an ideal candidate for the anode of sodium ion batteries. However, the design of Sn‐based electrodes with maintained long‐term stability still remains challenging due to their huge volume expansion (≈420%) and easy pulverization during cycling. Herein, a facile and versatile strategy for the synthesis of nitrogen‐doped graphene quantum dot (GQD) edge‐anchored Sn nanodots...
Thanks to their unique optical and electric properties, 2D materials have attracted a lot of interest for optoelectronic applications. Here, the emerging 2D materials, organic–inorganic hybrid perovskites with van der Waals interlayer interaction (Ruddlesden–Popper perovskites), are synthesized and characterized. Photodetectors based on the few‐layer Ruddlesden–Popper perovskite show good photoresponsivity...
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