Structural and Electronic Modulations of Se-Vacancy-Rich MoSe Triggered by Cr Doping toward Robust Nitrogen Reduction Reaction.

The electrocatalytic nitrogen reduction reaction (NRR) is proposed as an alternative to the Haber-Bosch process, but the development of efficient NRR electrocatalysts remains a challenging task. MoSe has superior conductivity compared to MoS, making it promising in the NRR field. Unfortunately, the scarcity of active sites and competitive hydrogen evolution reaction (HER) hinder its broader applications.

Direct Seawater Electrolysis: From Catalyst Design to Device Applications.

Direct seawater electrolysis (DSE) for hydrogen production, using earth-abundant seawater as the feedstock and renewable electricity as the driving source, paves a new opportunity for flexible energy conversion/storage and smooths the volatility of renewable energy. Unfortunately, the complex environments of seawater impose significant challenges on the design of DSE catalysts, and the practical performance of many current DSE catalysts remains unsatisfactory on the device level. However, many studies predominantly concentrate on the development of electrocatalysts for DSE without giving due consideration to the specific devices.

Highly Efficient Electrocatalytic N Reduction to Ammonia over Metallic 1T Phase of MoS Enabled by Active Sites Separation Mechanism.

The 1T phase of MoS has been widely reported to be highly active toward the hydrogen evolution reaction (HER), which is expected to restrict the competitive nitrogen reduction reaction (NRR). However, in this work, a prototype of active sites separation over 1T-MoS is proposed by DFT calculations that the Mo-edge and S atoms on the basal plane exhibit different catalytic NRR and HER selectivity, and a new role-playing synergistic mechanism is also well enabled for the multistep NRR, which is further experimentally confirmed. More importantly, a self-sacrificial strategy using g-C N as templates is proposed to synthesize 1T-MoS with an ultrahigh 1T content (75.

High-Performance MoC Electrocatalyst for Hydrogen Evolution Reaction Enabled by Surface Sulfur Substitution.

Molybdenum carbides have been expected to be one of the promising catalysts for the hydrogen evolution reaction (HER) due to their similar d-band electronic structures to the Pt-group metals. However, the weaker hydrogen-adsorption ability of MoC severely hinders its applications. Guided by density functional theory calculations, we put forward a strategy to design the novel MoC-based electrocatalyst with surface reconstruction through sulfur doping.

Oncogenic circDHTKD1 promotes tumor growth and metastasis of oral squamous cell carcinoma in vitro and in vivo via upregulating miR-326-mediated GAB1.

Circular RNAs (circRNAs) have been extensively elucidated with regard to their significant implications in oral squamous cell carcinoma (OSCC). This study performed the functional investigation of circRNA dehydrogenase E1 and transketolase domain containing 1 (circDHTKD1) in OSCC. RNA expression levels of different molecules were measured via quantitative real-time polymerase chain reaction (qRT-PCR).

[Three-dimensional Reconstruction of Retinal Vessels Based on Binocular Vision].

In robot-assisted eye surgery, such as retinal vascular bypass surgery, precise positioning of operating points is required. In this study, a binocular vision-based 3D reconstruction method is proposed to locate the incision points on retinal vessels. Vessels in the image were extracted by CLAHE algorithm to remove the influence of background, then stereo matching was performed.

Boron triggers the phase transformation of Mo C (α-MoC /β-MoC) for enhanced hydrogen production.

As highly efficient non-precious metal-based catalysts for the hydrogen evolution reaction (HER), molybdenum carbides have attracted much attention over the phase and structure modification for the improvement of HER performances. In this work, a novel strategy is proposed to modulate phases of molybdenum carbides by boron doping, so that the HER performances can be well controlled. After B-doping, the HER activity of the as-prepared B30 catalyst is significantly enhanced with a much smaller Tafel slope of 78 mV dec than that of the blank one (134 mV dec), which originates from the increased amount of active sites, enhanced turnover frequency of each active site and reduced electron transfer resistance.

Amorphous phosphorus-doped MoS catalyst for efficient hydrogen evolution reaction.

Splitting water is an important method for producing clean and sustainable hydrogen to replace finite fossil fuels in future energy systems. MoS is reported as a promising catalyst without noble metallic elements to accelerate the rate of the electrocatalytic hydrogen evolution reaction. However, there is a real need and strong demand for further improvement of the MoS-based catalyst.

Biomass-derived nanostructured carbons and their composites as anode materials for lithium ion batteries.

Since ever-increasing energy demands stimulated intensive research activities on lithium-ion batteries (LIBs), biomass as an earth-abundant renewable energy source has played an intriguing and promising role in developing sustainable biomass-derived carbons and their composite materials for high-performance LIB anodes. Different from other materials (e.g.

MoS2 nanodot decorated In2S3 nanoplates: a novel heterojunction with enhanced photoelectrochemical performance.

MoS2 nanodot decorated In2S3 nanoplates were successfully synthesized via a modified one-pot method. The In2S3/MoS2 heterojunction nanocomposite exhibits superior optical and photoelectrochemical performance to the bare ones, owing to the synergistic effect.

Molybdenum phosphide: a new highly efficient catalyst for the electrochemical hydrogen evolution reaction.

Molybdenum phosphide was adopted as a new electrocatalyst for the hydrogen evolution reaction for the first time, exhibiting an excellent electrocatalytic activity with a small Tafel slope of 60 mV dec(-1), which is amongst the most active, acid-stable, earth abundant HER electrocatalysts reported to date.

Ultrasonic-assisted preparation of metastable hexagonal MoO3 nanorods and their transformation to microbelts.

Metastable hexagonal h-MoO(3) nanorods were synthesized by a simple sonochemical method, and then were transformed into thermodynamically stable a-MoO(3) microbelts by calcination. The obtained samples were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). It was found that the as-prepared h-MoO(3) nanorods were of 0.