Pt-modified hollow tube-like polyaniline-based NH sensor.

Polyaniline (PANI) has significant applications in room-temperature NH detection due to its unique and reversible doping-dedoping chemical state, stable electrical conductivity and easy and convenient synthesis process. However, pristine PANI still suffers from poor performance in terms of sensitivity, response speed and detection limit. To address issues of low sensitivity and high detection limit, a platinum (Pt)-modified hollow PANI (Pt-PANI) sensor was designed.

Slack resources and individual performance of clinicians: the mediating role of job satisfaction and empirical evidence from public hospitals in Beijing, China.

Background: Clinicians in Chinese public hospitals face a complex and severe clinical practice environment, and the individual performance of clinicians is key to improving the output of the healthcare industry. This study aims to explore the mechanism of slack resources in improving individual performance of clinicians and the role of job satisfaction in this process, while the study framework is based on the widely applied Job-Demands Resources theory.

Methods: Based on the study framework composed of slack resources, individual performance, and job satisfaction, hypotheses have been put forward, and questionnaires have been distributed to representative clinicians in tertiary public hospitals.

Integrating electronic structure regulation and dynamic active sites construction on NiCdS-Ni photocatalyst for efficient hydrogen evolution.

Regulating electronic structure and enriching active sites of photocatalysts are effective strategies to promote hydrogen evolution. Herein, a unique NiCdS-Ni photocatalyst, including the surface nickel (Ni) doping and atomic Ni anchoring sites, is successfully prepared by Ni ions exchange reaction (Ni+ CdS → NiCdS) and in-situ photo-induction of Ni(Ni+NiCdS→hνNiCdS-Ni), respectively. As to Ni doping, the Ni replaced cadmium (Cd) atoms introduce hybridized states around the Fermi level, modulating the electronic structure of adjacent S atoms and optimizing the photocatalytic activity of sulfur (S) atoms.

Cobalt-plasma treatment enables structural reconstruction of a CoO/BiVO composite for efficient photoelectrochemical water splitting.

Cobalt-plasma sparked by a pulsed laser was utilized for the first time to modify a BiVO photoanode, inducing surface structural reconstruction and CoO/BiVO composite construction. Combining charge redistribution and cobalt, the center of hole accumulation and catalytic activity, the photoanode with optimized charge transfer capacity exhibits a 3 times improvement in photoelectrochemical water oxidation performance.

The Effect of Slack Resources on Innovation Performance and the Environmental Adaptability of Public Hospitals: The Empirical Evidence From Beijing of China.

Background: The development level of public hospitals has a direct impact on people's health. The reform of the medical industry in China has been gradually underway in recent years, while hospitals face a complex and uncertain environment. This study aims to explore the mechanism of resources slack in buffering environmental uncertainty and promoting innovation in public hospitals.

Engineering surface segregation of perovskite oxide through wet exsolution for CO catalytic oxidation.

Cation segregation occurring near the surface or interfaces of solid catalysts plays an important role in catalytic reactions. Unfortunately, the native surface of perovskite oxides is dominated by passivated A-site segregation, which severely hampers the catalytic activity and durability of the system. To address this issue, herein, we present a wet exsolution method to reconstruct surface segregation in perovskite cobalt oxide.

Rapid large-scale synthesis of ultrathin NiFe-layered double hydroxide nanosheets with tunable structures as robust oxygen evolution electrocatalysts.

Transition metal layered double hydroxides (LDHs) with ultrathin two-dimensional (2D) structures, especially NiFe-based LDH nanosheets, have been extensively developed as advanced oxygen evolution reaction (OER) electrocatalysts for water splitting. Nevertheless, traditional synthetic approaches for these promising catalysts usually involve tedious pretreatment procedures and a subsequent time-consuming exfoliation process, and the obtained products possess a wide dispersion of thickness and limited production yield. Here, a sequence of ultrathin NiFe-LDH nanosheets with tunable components were prepared on a large scale a rapid room-temperature method under ambient conditions, and were further used as a desired material model for studying the influence of Ni/Fe ratio modulation on the OER performance.

Promotion of the water oxidation activity of iridium oxide by a nitrogen coordination strategy.

The water oxidation reaction is the pivotal half-reaction for photo-/electro-catalytic water splitting. Fabrication of high-efficiency and robust water oxidation is essential to realize wide-scale artificial photosynthesis. Here, we report an efficient strategy to improve the water oxidation activity of iridium oxide by a nitrogen-coordination method.

In situ sulfidation for controllable hetero-interface engineering of α-Ni(OH)-NiS hybrid structures realizing robust electrocatalytic methanol oxidation.

A series of α-Ni(OH)-NiS hybrid structures are prepared as advanced electrocatalysts for the methanol oxidation reaction (MOR) via a feasible in situ sulfidation approach. The α-Ni(OH)-NiS hetero-interfaces endow the hybrid structures with reduced γ-NiOOH formation energy and methanol adsorption energy, and thus a significantly enhanced electrocatalytic activity for the MOR.

Carbon inserted defect-rich MoS nanosheets@CdSnanospheres for efficient photocatalytic hydrogen evolution under visible light irradiation.

Carbon -MoS@CdS (C-MoS@CdS) core-shell nanostructures with controlled surface sulfur (S) vacancies were prepared via a glucose assisted hydrothermal growth method. The glucose acted as a reducing agent of C-MoS to partially reduce Mo ions to Mo and served as a carbon source to insert the amorphous carbon into the layered MoS simultaneously. The presence of Mo result in the surface S-vacancies, which can provide more additional active sites and enhance the photocatalytic performance.

Design and synthesis of metal hydroxide three-dimensional inorganic cationic frameworks.

Three-dimensional (3D) cationic frameworks are rare but crucial host materials with vast industrial applications. However, the controlled synthesis of 3D inorganic cationic framework (ICF) materials still remains a challenge. Here, we develop a new strategy to construct 3D inorganic cationic frameworks by octahedral metal-hydroxide (M(OH)) unit induced reconstruction of layered rare-earth hydroxides.

Hydrothermal preparation of perovskite structures DyCrO and HoCrO.

Perovskite structured rare-earth chromites are one of the most promising families of functional materials in solid oxide fuel cells, multiferroic materials, and sensors. Here, we report a mild hydrothermal method to synthesize DyCrO and HoCrO monodispersed single crystals. The synthesis conditions, crystal structure, Raman spectra and temperature- and field-dependent magnetic properties were studied.

Low temperature hydrothermal synthesis, structure and magnetic properties of RECrO3 (RE = La, Pr, Nd, Sm).

Perovskite structured rare-earth chromites (RECrO3) are an interesting family of functional materials due to their wide application in numerous areas. Various methods have been used to synthesize this family of materials; however, such methods usually need a high temperature crystallization process above 800 °C, and only produce polycrystalline ceramics. Herein, a series of RECrO3 single crystal samples with uniform particle sizes were prepared via a mild hydrothermal method with temperatures as low as 240-260 °C, and the synthesis conditions were studied in detail.

Capacitive Behavior of Single Gallium Oxide Nanobelt.

In this research, monocrystalline gallium oxide (Ga₂O₃) nanobelts were synthesized through oxidation of metal gallium at high temperature. An electronic device, based on an individual Ga₂O₃ nanobelt on Pt interdigital electrodes (IDEs), was fabricated to investigate the electrical characteristics of the Ga2O3 nanobelt in a dry atmosphere at room temperature. The current-voltage (I-V) and I/V-t characteristics show the capacitive behavior of the Ga₂O₃ nanobelt, indicating the existence of capacitive elements in the Pt/Ga₂O₃/Pt structure.

Evaluation of factors associated with pain experienced during mammary ductoscopy.

Background: The aim of this study was to evaluate patient characteristics and findings after mammary ductoscopy in an effort to reduce the pain experienced during the procedure.

Patients And Methods: We evaluated outpatients in whom mammary ductoscopy was performed under local or intraductal anesthesia without preference, and their clinical characteristics and findings were recorded. Average and maximum pain scores were determined after the examination for statistical analysis.

Electrophysiological measurement at Erb's point during the early stage of Guillain-Barré syndrome.

This study aimed to find the electrophysiological significance of proximal nerve stimulation at Erb's point during the early stage of Guillain-Barré syndrome (GBS). Twenty-one healthy volunteers and 13 patients within the first week of GBS were studied. Latency and amplitude at wrist, elbow and Erb's point, and F waves were calculated after compound muscle action potentials (CMAP) were obtained at the median and ulnar nerve.

Novel cigarlike TiO2 nanofibers: fabrication, improved mechanical, and electrochemical performances.

By coupling the self-assembly of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) containing titanium precursors with the electrospinning technique, novel cigarlike nanofibers with an outer-shell and inner-continuous-pore structure and resultant fabrics were fabricated. Different from typical porous metal oxides, the prepared high-surface-area nonwoven fabrics show excellent mechanical properties. Not only are these fabrics self-supporting over a large area, but they can also be cut using scissors, which is important for large-scale applications.

One-pot redox syntheses of heteronanostructures of Ag nanoparticles on MoO3 nanofibers.

A new one-pot redox route has been developed for simultaneous syntheses of Ag nanoparticles on MoO(3) nanofibers. Four different synthetic reactions that have been integrated into the one-pot synthesis include the oxidation of [Na(H(2)O)(2)](0.25)MoO(3) bronze, the reduction of silver ions, and the in situ simultaneous growth of the self-organized Ag nanoparticles and the MoO(3) nanofibers.