Bright colloidal gallium-doped CuInS quantum dots for luminescent solar concentrators.

We have developed an efficient strategy to improve the brightness and stability of CuInS quantum dots Ga doping combined with the overgrowth of a ZnS shell. The incorporation of Ga into crystal lattices greatly suppresses the diffusion of Cu and reduces the formation of Cu-related defects, leading to a photoluminescence quantum yield as high as 92%. These nanocrystals can be integrated into luminescent solar concentrators and the devices exhibit a power conversion efficiency reaching 3.

Partially Amorphous Ru-Doped CoSe Nanoparticles with Optimized Intermediates Adsorption for Highly Efficient Sulfur Oxidation Reaction.

The application of thermodynamically more favorable sulfur oxidation reaction (SOR) to replace oxygen evolution reaction (OER) in electrocatalytic water electrolysis is an appealing strategy to achieve low-energy hydrogen production while removing toxic sulfur ions from wastewater. However, the study of SOR catalysts with both activity and stability still faces great challenges. Herein, this study prepares partially amorphous Ru-doped CoSe (pa-Ru-CoSe) nanoparticles for SOR.

Heterointerface MnO/RuO with rich oxygen vacancies for enhanced oxygen evolution in acidic media.

The design and synthesis of oxygen evolution reaction (OER) electrocatalysts that operate efficiently and stably under acidic conditions are important for the preparation of green hydrogen energy. The low intrinsic catalytic activity and poor acid resistance of commercial RuO limit its further development, and the construction of heterointerface structures is the most promising strategy to break through the intrinsic activity limitation of electrocatalysts. Herein, we synthesized spherical and oxygen vacancy-rich heterointerface MnO/RuO using morphology control, which promoted the kinetics of the oxygen evolution reaction with the interaction between oxygen vacancies and the oxide heterointerface.

Synergistic Effects of Dual-Doping with Ni and Ru in Monolayer VS Nanosheet: Unleashing Enhanced Performance for Acidic HER through Defects and Strain.

Amidst the escalating quest for clean energy, the hydrogen evolution reaction (HER) in acidic conditions has taken center stage, catalyzing the search for advanced electrocatalysts. The efficacy of these materials is predominantly dictated by the active site density on their surfaces. The propensity is leveraged for monolayer architectures to introduce defects, enhancing surface area, and increasing active sites.

Grafting Ultra-fine Nanoalloys with Amorphous Skin Enables Highly Active and Long-lived Acidic Hydrogen Production.

Large-scale deployment of proton exchange membranes water electrolysis (PEM-WE) requires a substantial reduction in usage of platinum group metals (PGMs) as indispensable electrocatalyst for cathodic hydrogen evolution reaction (HER). Ultra-fine PGMs nanocatalysts possess abundant catalytic sites at lower loading, but usually exhibit reduced stability in long-term operations under corrosive acidic environments. Here we report grafting the ultra-fine PtRu crystalline nanoalloys with PtRuSe "amorphous skin" (c-PtRu@a-PtRuSe) by in situ atomic layer selenation to simultaneously improve catalytic activity and stability.

Self-regulating bioinspired supramolecular photonic hydrogels based on chemical reaction networks for monitoring activities of enzymes and biofuels.

Inspired by the way many living organisms utilize chemical/biological reactions to regulate their skin and respond to stimuli in the external environment, we have developed a self-regulating hydrogel design by incorporating chemical reaction networks (CRNs) into biomimetic photonic crystal hydrogels. In this hydrogel system, we used host-guest supramolecular non-covalent bonds between beta-cyclodextrin (β-CD) and ferrocene (Fc) as partial crosslinkers and designed a CRN involving enzyme-fuel couples of horseradish peroxidase (HRP)/HO and glucose oxidase (GOD)/d-glucose, by which the responsive hydrogel was transformed into a glucose-driven self-regulating hydrogel. Due to the biomimetic structural color in the hydrogel, the progress of the chemical reaction was accompanied by a change in the color of the hydrogel.

Enriched Fe Doped on Amorphous Shell Enable Crystalline@Amorphous Core-Shell Nanorod Highly Efficient Electrochemical Water Oxidation.

The rational design of efficient and cost-effective electrocatalysts for oxygen evolution reaction (OER) with sluggish kinetics, is imperative to diverse clean energy technologies. The performance of electrocatalyst is usually governed by the number of active sites on the surface. Crystalline/amorphous heterostructure has exhibited unique properties and opens new paradigms toward designing electrocatalysts with abundant active sites for improved performance.

Ultra-Low Pt Doping and Pt-Ni Pair Sites in Amorphous/Crystalline Interfacial Electrocatalyst Enable Efficient Alkaline Hydrogen Evolution.

Noble metal doping can achieve an increase in mass activity (MA) without sacrificing catalysis efficiency and stability, so that alkaline hydrogen evolution reaction (HER) performance of the catalyst can be optimized to the maximum degree. However, its excessively large ionic radius makes it difficult to achieve either interstitial doping or substitutional doping under mild conditions. Herein, a hierarchical nanostructured electrocatalyst with enriched amorphous/crystalline interfaces for high-efficiency alkaline HER is reported, which is composed of amorphous/crystalline (Co, Ni) (HPO ) (OH) homogeneous hierarchical structure with an ultra-low doped Pt (Pt-a/c-NiHPi).

Interfacial Engineering of Polycrystalline Pt P Nanocrystals and Amorphous Nickel Phosphate Nanorods for Electrocatalytic Alkaline Hydrogen Evolution.

Electrocatalytic hydrogen evolution reaction (HER) in alkaline media is important for hydrogen economy but suffers from sluggish reaction kinetics due to a large water dissociation energy barrier. Herein, Pt P nanocrystals anchoring on amorphous nickel phosphate nanorods as a high-performance interfacial electrocatalyst system (Pt P NCs/a-NiPi) for the alkaline HER are demonstrated. At the unique polycrystalline/amorphous interface with abundant defects, strong electronic interaction, and optimized intermediate adsorption strength, water dissociation is accelerated over abundant oxophilic Ni sites of amorphous NiPi, while hydride coupling is promoted on the adjacent electron-rich Pt sites of Pt P .

Multiple roles for LaFeO in enhancing the Photoelectrochemical performance of WO.

For photoelectrochemical (PEC) water splitting, constructing heterojunctions and loading co-catalysts are effective means to realizing sufficient light absorption, effective photogenerated carrier separation and fast charge transport. However, during implementation, the PEC performance of the catalyst is affected by both parasitic light absorption and reflection and the change in energy band structure due to the creation of new interfaces. Herein, in order to minimize the effect of recombination of photogenerated electron-hole pairs on the catalyst PEC performance due to the nascent interface arising from the co-catalyst compounding, WO and Ni/Co co-doped LaFeO (LFO) are constructed as heterojunctions, in which NiCo-LFO acts both as a part of the heterojunction to enhance photogenerated carrier separation and a co-catalyst to enhance the conductivity and modulate the surface state density at the catalyst-electrolyte interface.

The effects of metals and mixture exposure on lung function and the potential mediating effects of oxidative stress.

Exposure to metals is associated with lung function decline. However, limited data are available about effects of co-exposure of metals on lung function. Additionally, the mechanism of the association between metals and lung function remains unclear.

Manganese Cadmium Sulfide Nanoparticles Solid Solution on Cobalt Acid Nickel Nanoflakes: A Robust Photocatalyst for Hydrogen Evolution.

Photocatalytic water splitting for hydrogen evolution is one of the most promising methods to mitigate environmental and energy-related issues. In this study, manganese cadmium sulfide (Mn Cd S) solid solution is used to construct a p-n heterostructure with NiCo O through a hydrothermal method. The Mn Cd S/NiCo O composites are used for photocatalytic hydrogen evolution reaction, and the optimal hydrogen rate with 40 mg of Mn Cd S/NiCo O 40 mg (MCS/NCO 40) is 61159 μmol g  h , which is about 16.

Amorphous Fe(OH) Passivating CeO Nanorods: A Noble-Metal-Free Photocatalyst for Water Oxidation.

Noble-metal-free composites with good photocatalytic property are of great interest. Here, CeO nanorods composites loaded with amorphous Fe(OH) cocatalyst were designed and prepared via a secondary water bath at 100 °C. The as-synthesized CeO /amorphous Fe(OH) composites exhibited superior light photocatalytic activities compared to pure CeO , especially the sample with a loading time of 60 min.

Fe doped amorphous single layered vanadyl phosphate nanosheets as highly efficient electrocatalyst for water oxidation.

The search for earth-abundant water oxidation electrocatalysts with low-cost and high-performance is essential to the energy conversion field. Well defined, rational designed two-dimensional materials have attracted enormous interest in light of much more specific surface areas and unique electronic properties. Herein, we report a facile two-phase solvothermal approach for the synthesis of Fe doped amorphous single-layered (~0.

Two-dimensional (2D) MnInSe nanosheets with porous structure: a novel photocatalyst for water splitting without sacrificial agents.

Novel 2D porous MnInSe nanosheet photocatalysts have been synthesized for the first time via a simple hydrothermal method, which exhibit promising activity for photocatalytic water splitting without any sacrificial agent due to their large specific surface area, 2D layered morphology, porous structure and suitable energy gap.

Vertical 1T/2H-WS nanoflakes grown on 2D-CN: Multiple charge transfer channels designed for enhanced photocatalytic activity.

Two-dimensional (2D) sulfides have attracted much attention as a promising photocatalyst for the hydrogen evolution reaction. In this work, a highly active and stable vertical 1T/2H-WS nanoflakes grown on 2D-CN with multiple charge transfer channels through a simple and efficient colloidal strategy is reported. This three-dimensional (3D) composite presents the usual semiconducting 2H phase WS as well as the unusual distorted octahedral 1T phase WS, which vertically connect 2D-CN constructing an interesting 3D structure with more active sites.

Synthesis and characterization of Mn-doped CsPb(Cl/Br) perovskite nanocrystals with controllable dual-color emission.

Metal-halide perovskite nanocrystals (NCs) are considered to be promising types of optoelectronic and photonic materials. The emission colors of the cesium lead halide perovskite (CsPbX, X = Cl, Br, I) NCs depend on the joint influence of the emission peaks of the host and its dopant ions. Herein, we report a phosphine-free strategy to synthesize Mn-doped CsPb(Cl/Br) NCs to tune their optical properties in a wide color gamut.

Vertical Growth of 2D Amorphous FePO Nanosheet on Ni Foam: Outer and Inner Structural Design for Superior Water Splitting.

Rational design of highly efficient bifunctional electrocatalysts based on 3D transition-metal-based materials for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is of great importance for sustainable energy conversion processes. Herein, a novel strategy involving outer and inner structural engineering is developed for superior water splitting via in situ vertical growth of 2D amorphous FePO nanosheets on Ni foam (Am FePO /NF). Careful experiments and density functional theory calculations show that the inner and outer structural engineering contributing to the synergistic effects of 2D morphology, amorphous structure, conductive substrate, and Ni-Fe mixed phosphate lead to superior electrocatalytic activity toward OER and HER.

Controllable synthesis and luminescent properties of rare earth doped Gd(MoO) nanoplates.

For the first time, we have successfully synthesized rare-earth doped Gd(MoO): RE (RE=Eu, Tb) nanoplates by solvothermal method. The morphology of Gd(MoO) can be manipulated by changing the reaction times and reaction temperatures. The composition and surface morphology have been investigated by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM), respectively.

Rapid synthesis of CuInTe ultrathin nanoplates with enhanced photoelectrochemical properties.

Ultrathin (2.1 ± 0.1 nm) single-crystal CuInTe two-dimensional (2D) nanoplates were synthesized via a rapid colloidal synthesis method.

Colloidal synthesis of VSe2 single-layer nanosheets as novel electrocatalysts for the hydrogen evolution reaction.

We present a one-pot colloidal route to synthesize VSe2, a new type of metallic single-layer nanosheet. The ∼0.4 nm thick VSe2 single-layer nanosheets possess extraordinary electrocatalytic hydrogen evolution reaction (HER) performance with a low onset overpotential of 108 mV, a small Tafel slope of 88 mV per decade, and an exceptional overpotential of 206 mV at a current density of 10 mA cm(-2).

Synthesis and characterization of Mn doped ZnS d-dots with controllable dual-color emissions.

High-quality Mn doped ZnS d-dots were successfully synthesized via an alternative route based on the solvothermal method using oleic acid as stabilizing agent. X-ray diffraction (XRD), transmission electron microscopy (TEM) as well as photoluminescence (PL) spectra were employed to characterize the obtained samples. The as-obtained d-dots are highly crystalline and uniform sized, and they can be well dispersed in hexane to form stable and clear colloidal solution.

Facile synthesis of highly luminescent UV-blue emitting ZnSe/ZnS core/shell quantum dots by a two-step method.

New water-soluble and highly luminescent ZnSe/ZnS core/shell quantum dots with tunable emission ranging between 390 and 460 nm were synthesized via a two-step method.

[Synthesis and photoluminescent properties of core/shell structure ZnS : Mn/SiO2 nanocrystals].

Mn-doped ZnS nanopatricles synthesized by solvothermal method were successfully coated with SiO2 shells of various thicknesses by hydrolysis reaction of tetraethyl orthosilicate (TEOS). The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy images (TEM), X-ray photoelectron spectroscopy (XPS) and the room temperature photoluminescence (PL) spectra. When the ZnS : Mn nanoparticles were coated with SiO2 shells, an obvious increase in particle size and a clear shell of SiO2 can be observed.