A facile hydrothermal synthesis route to N and S, co-doped graphene quantum dots (GQDs) was developed by using citric acid as the C source urea or thiourea S sources. Both doped GQDs showed high yield (78% 71%), excitation independent under of 340–400 nm single exponential decay UV excitation. broad absorption band in visible region appeared due doping with sulfur, which alters surface state GQDs. However, show different color emission 420–520 their region. The excellent photocatalytic...

Abstract Layered transition-metal dichalcogenides have emerged as exciting material systems with atomically thin geometries and unique electronic properties. Pressure is a powerful tool for continuously tuning their crystal structures away from the pristine states. Here, we systematically investigated pressurized behavior of MoSe 2 up to ∼60 GPa using multiple experimental techniques ab-initio calculations. evolves an anisotropic two-dimensional layered network three-dimensional structure...

Highly dispersed ZnO/g-C3N4 composites with different doping ratios of g-C3N4 were prepared by a hydrothermal method. The preparation method is simple and the energy consumption low. composite samples used to degradate methyl orange solution. They all showed excellent photocatalytic activity cycling stability. optimal loading content was investigated, mechanism enhanced studied in detail. This study provides promising material for removal organic pollutants.

Supramolecular micelles as drug-delivery vehicles are generally unable to enter the nucleus of nondividing cells. In work reported here, nuclear localization signal (NLS)-modified polymeric were studied with aim improving drug delivery.In this research, cholesterol-modified glycol chitosan (CHGC) was synthesized. NLS-conjugated CHGC (NCHGC) synthesized and characterized using proton magnetic resonance spectroscopy, dynamic light scattering, fluorescence spectroscopy. Doxorubicin (DOX), an...

Abstract Cu 1.8 S has been considered as a potential thermoelectric (TE) material for its stable electrical and thermal properties, environmental benignity, low cost. Herein, the TE properties of nanostructured 1− x Te (0 ⩽ 0.2) bulks fabricated by facile process combining mechanical alloying (MA) room-temperature high-pressure sintering (RT-HPS) technique were optimized via eliminating volatilization element suppressing grain growth. Experimentally, single phase was obtained at = 0, second...

Abstract Molecular self‐assembly has been widely used to develop nanocarriers for drug delivery. However, most of them have unsatisfactory loading capacity (DLC) and the dilemma between stimuli‐responsiveness stability, stagnating their translational process. Herein, we overcame these drawbacks using dynamic combinatorial chemistry. A carrier molecule was spontaneously quantitatively synthesized, aided by co‐self‐assembly with a template an anti‐cancer doxorubicin (DOX) from library that...

We performed synchrotron x-ray diffraction and infrared (IR) experiments combined with evolutionary structure predictions band calculations on ${\text{Ag}}_{2}\text{Se}$ to \ensuremath{\sim}20 GPa. present evidence for phase I (\ensuremath{\beta}-${\text{Ag}}_{2}\text{Se}$) as a potential three-dimensional topological insulator by its increase in optical gap the topologically nontrivial nature of structure. Higher pressures induce triple-layer stacking pattern significantly crystallographic...

Scintillators attract wide research interest for their distinct applications in radiation detection. Elpasolite halides are among the most promising scintillators due to high structural symmetry and good scintillation performance. Better understanding of underlying mechanism opens up new possibilities scintillator development. In this work, we employ a variety experimental techniques study two mixed-anion elpasolites Cs2NaRBr3I3 (R = La, Y). The emission intrinsic with light yield ranging...

The Sol–gel method is successfully used to prepare high specific surface area TiO2 (HSTiO2). Then, the photodeposition composite silver particles with HSTiO2. X-ray diffraction, scanning electron microscopy, transmission Brunauer–Emmett–Teller, and UV–vis spectroscopy are characterize Ag/HSTiO2 nanocomposites. It can be concluded that prepared has a large area, reaching 125.5 m2 g–1. Additionally, addition of broadens photoresponse range from UV region visible light region. In order evaluate...

Abstract Plastics are one of the most widely used polymeric materials. However, they often undegradable and non‐recyclable due to very stable covalent bonds macromolecules, causing environmental pollution health problems. Here, we report that liquid‐liquid phase separation (LLPS) could drive formation robust, stable, sustainable plastics using small molecules. The LLPS process sequester concentrate solutes, strengthen non‐covalent association between molecules produce a bulk material whose...

Dumbbell Ag2CO3–ZnO heterojunctions were synthesized for the first time via a simple in situ precipitation method. The as-prepared heterojunction showed high photocatalytic activity decomposition of methyl orange aqueous solution under simulated solar irradiation. improvement compared to that pure ZnO can be attributed formation heterojunction. Furthermore, mechanism was investigated detail. free radical trapping experiments indicated superoxide (·O2–) an important active species process....

Results of high-pressure infrared (IR) and Raman spectroscopy measurements are presented for the mixed valence compound ${\mathrm{CsAuI}}_{3}$, where Au adopts ${\mathrm{Au}}^{\mathrm{I}}$ ${\mathrm{Au}}^{\mathrm{III}}$ valency. shows softening with pressure vibration modes in ${\mathrm{Au}}^{\mathrm{III}}$-${\mathrm{I}}_{4}$ square planar units tetragonal phase, indicating a similar pressure-induced lattice distortion as found closely related compounds ${\mathrm{CsAuCl}}_{3}$...

Digenite (Cu1.8S) as a potential p-type thermoelectric (TE) material has attracted extensive attention due to its environmental benign, abundant resources and low cost of component elements. In this study, the TE properties MnxCu1.8S bulk samples prepared by mechanical alloying (MA) combined with spark plasma sintering (SPS) were investigated. Doping Mn would initially substitute Cu tune band structure Cu1.8S an enlarged gap Eg. However, if content is beyond solubility limit x = 0.01 in will...

The rising demand for efficient radiation detectors in various applications has led to intense research on single crystal scintillators. scintillation performance strongly depends the as-grown quality. Mixed-anion elpasolite crystals with Ce-doping such as Cs2NaREBr3I3 (RE = La, Y) are among most promising candidates next generation However, there multiple challenges traditional synthesis using melt–freeze growth techniques due complicated composition, well impurities, and varying thermal...

Binary transition metal chalcogenides have attracted increasing attention for their unique structural and electronic properties. High pressure is a powerful tool tuning the lattice structure of away from pristine states. In this work, we systematically studied in situ optical behavior silver sulfide (Ag2S) under by synchrotron X-ray diffraction infrared spectroscopy measurements diamond anvil cell. Upon compression, Ag2S undergoes symmetrization accompanied series transitions while...

A hybrid heterojunction PMV-TiO 2 /Ag x constructed by S-scheme and Schottky junction were prepared, which exhibits photocatalytic activity for removal of halogenated phenols, tetracycline, K Cr O 7 , MO etc.

Abstract Molecular self‐assembly has been widely used to develop nanocarriers for drug delivery. However, most of them have unsatisfactory loading capacity (DLC) and the dilemma between stimuli‐responsiveness stability, stagnating their translational process. Herein, we overcame these drawbacks using dynamic combinatorial chemistry. A carrier molecule was spontaneously quantitatively synthesized, aided by co‐self‐assembly with a template an anti‐cancer doxorubicin (DOX) from library that...

Abstract Plastics are one of the most widely used polymeric materials. However, they often undegradable and non‐recyclable due to very stable covalent bonds macromolecules, causing environmental pollution health problems. Here, we report that liquid‐liquid phase separation (LLPS) could drive formation robust, stable, sustainable plastics using small molecules. The LLPS process sequester concentrate solutes, strengthen non‐covalent association between molecules produce a bulk material whose...

We report physical and structural properties of single-crystal Ca2Ru1-xFexO4 (0<x<0.20) as functions temperature, magnetic field pressure. Ca2RuO4 is a structurally-driven Mott insulator with metal-insulator (MI) transition at TMI = 357 K, which well separated from antiferromagnetic order TN 110 K. Fe substitution for Ru in causes pronounced magnetization reversal giant negative volume thermal expansion (NVTE). The result field-induced coupling between the Ru- Fe-magnetic sublattices that...

For the scene of finding things, people will go directly to area where purpose target object is most closely related, but current robots cannot understand use relevance commonly used objects in daily life. In order give an understanding this content, article designs object-finding strategy based on semantic information, which primarily divided into two parts: visual learning and learning. Visual mainly obtains more realistic corpus through recognition a large number actual pictures. Semantic...