mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Boosting electrocatalytic selectivity in carbon dioxide reduction: The fundamental role of dispersing gold nanoparticles on silicon nanowires

Carbon dioxide electrochemical reduction (CO_2RR) has been recognized as an efficient way to mitigate CO_2 emissions and alleviate the pressure on global warming and associated environmental consequences. Gold (Au) is reported as stable and active electrocatalysts to convert CO_2 to CO at low overpotential due to its moderate adsorption strength of *COOH and *CO. The request for improved catalytic performance, however, is motivated by current unsatisfied catalytic selectivity because of the side hydrogen evolution reaction. In this context, the design of Au based binary catalysts that can boost CO selectivity is of great interest. In the present work, we report that Au nanoparticles can be feasibly dispersed and anchored on silicon nanowires to form Au-Si binary nanomaterials. The Au-Si may stably drive CO_2RR with a CO Faraday efficiency of 95.6% at-0.6 V vs. RHE in 0.5 mol/L KHCO_3 solution. Such selectivity outperforms Au particles by up to 61%. Controlled experiments illustrate that such catalytic enhancement can chiefly be ascribed to electronic effects of binary catalysts. Theoretical calculations reveal that spontaneously produced silicon oxide may not only inhibit hydrogen evolution reaction, but also stabilize the key intermediate *COOH in CO formation.
Improvement of cycle behavior of Si/Sn anode composite supported by stable Si-O-C skeleton

A Si/Sn/SiOC/graphite (SSSG)composite with high efficiency and long-term cycling stability was synthesized by a cost-effective and scalable method, including the processes of mechanical milling and pyrolysis. The composite was characterized by X-ray diffraction (XRD),scanning electron microscope (SEM)and energy dispersive X-ray spectrometry (EDX). The electrochemical properties were investigated until the 25th cycle. As a result, the SSSG composite anode exhibits excellent long-term cycling stability and capacity. Such SSSG composite anode shows excellent cycling stability with a specific capacity of 568.2 mAh·g~(-1) and *80 % capacity retention over 25 cycles at 0.3C rate. The reasons for good electrochemical characteristics are considered that the SiOC net with favorable chemical stability acts as a skeleton to support and segregate Si/Sn nanostructures, and the graphitic mixing in the composite is used as conductive material to enhance the electrical conductivity in this composite. The results suggest that the design of this new structure has the potential to provide a way for the other functional composite materials.
Phosphorus-doping and oxygen vacancy endowing anatase TiO_2 with excellent sodium storage performance

Titanium dioxide is considered to be promising anode for sodium-ion batteries due to stable structure during the charge/discharge process. However, its practical application is hindered by the slow electron/ion transport. Herein, phosphorus-doped anatase TiO_2 nanoparticles with oxygen vacancies are successfully synthesized and utilized as high-performance sodium-storage materials. The dual strategy of phosphorus-doping and oxygen vacancies can concurrently boost electronic conductivity and adjust ion diffusion kinetics. They signiflcantly contribute to the improved rate performance (167 mAh·g~(-1) at 20.0C)and stable cycling (95.9% after 2000 cycles at 20.0C). The proposed dual strategy can be potentially used to improve other oxide anodes for rechargeable batteries.
PPy decorated α-Fe_2O_3 nanosheets as flexible supercapacitor electrodes

In recent years, α-Fe_2O_3 electrode material is considered to be one of the most potential anode materials for asymmetric supercapacitors (ASCs). But the poor electrical conductivity restricts its wide applications. It is an effective solution to improve electrical conductivity by compositing conductive polymer materials. Herein, we prepare several α-Fe_2O_3@PPy electrode materials on nickel foam by a facile solvothermal method and a subsequent electrochemical deposition process. The as-obtained α-Fe_2O_3@PPy-70 product is utilized as negative material for supercapacitors, which delivers a speciflc capacity of 1050 mF·cm~(-2) at 1 mA·cm~(-2). In addition, the assembled asymmetric capacitor shows an energy density of 0.178 mWh·cm~(-3) at 7.09 mW·cm~(-3), and the capacity retention rate after cycling is 87.5%.
Additives to propylene carbonate-based electrolytes for lithium-ion capacitors

Nowadays, lithium-ion capacitors (LICs)have become a type of important electrochemical energy storage devices due to their high power and long cycle life characteristics with fast response time. As one of the essential components of LICs, the electrolytes not only provide the anions and cations required during charge and discharge processes, but also supply the liquid environment for ions to migrate between anodes and cathodes in LIC cells. It is well accepted that propylene carbonate (PC)cannot be used as a single solvent for Li-ion electrolyte due to the failure to form stable SEI fllm on graphite surface. In this work, the compatibility of PC-based electrolyte with commercial soft carbon anode and activated carbon cathode has been validated by using the laminated pouch LIC cells. The effects of additives on the electrochemical properties of PC-based LICs have been systematically investigated. Ethylene sulflte (ES)was proved to be an effective additive to promote capacity retention at high C-rate, which is superior to vinylene carbonate and fluoroethylene carbonate. The addition of 5 wt% ES plays an important role in reducing internal resistance, as well as improving electrochemical stability and low-temperature performances. This study is expected to be beneflcial to explore robust electrolyte/additive combinations for LICs to reduce the internal resistance and to improve the lowtemperature performances.
Conducting network interface modulated rate performance in LiFePO_4/C cathode materials

Carbon can play a critical role in electrode,especially for LiFePO_4 cathode, not only serving as continuous conducting network for electron pathway, but also boosting Li~+ diffusion through providing sufficient electrons. Here, we report the modulation of electrode/electrolyte interface to yield excellent rate performance by creating cross-linked conducting carbon network in LiFePO_4/C cathode material. Such conducting networks inhibit agglomeration and growth of LiFePO_4/C primary particles and hence lead to a short Li~+ diffusion pathway. Furthermore, it also offers fast electron transmission rate and efficient electron for Li storage in the LiFePO_4 sheath. The LiFePO_4/C with carbon nanotubes (CNTs)delivers a discharge capacity of 150.9 mAh·g~(-1) at 0.1C (initial Coulombic efficiency of 96.4%)and an enhanced rate capability (97.2 mAh·g~(-1) at 20.0C). Importantly, it exhibits a high cycle stability with a capacity retention of 90.3% even after 800 cycles at 5.0C (0.85 A·g~(-1)). This proposed interface design can be applied to a variety of battery electrodes that face challenges in electrical contact and ion transport.
Fabrication of MOF-derived mixed metal oxides with carbon residues for pseudocapacitors with long cycle life

High electroactivity and good mechanical robustness of electrode materials are essential to deliver excellent electrochemical energy storage performance. Herein, metal-organic frameworks (MOF)derived mixed metal oxides (MMO, ZnO@NiO and Co_3O_4@NiO)are prepared by a two-step annealing process in air. Zinc-based MOF (ZIF-8)and cobalt-based MOF (ZIF-67)were employed, respectively,as hard templates for the chemical encapsulation of Ni(OH)_2 nanostructures by hydrothermal synthesis. The asprepared ZIF-8@Ni(OH)_2 and ZIF-67@Ni(OH)_2 were then converted to corresponding MMO through annealing in air. Meanwhile, MOF-derived carbon was preserved in the asfabricated MMO structure, thus improving the electronic conductivity as well as the mechanical stability of the materials. In virtue of these features, high specific capacitance of 1017 and 744 F·g~(-1) can be delivered at a current density of 1 A·g~(-1) for the Co_3O_4@NiO and ZnO@NiO samples, respectively. In addition, both of the samples have shown excellent cycling performance, which exhibited excellent capacitance retentions of 90.1% and 93.0% after 10,000 cycles for the Co_3O_4@NiO and ZnO@NiO samples,respectively, demonstrating their very promising use in next-generation pseudocapacitors.
Nb_2O_5 nanoparticles embedding in graphite hybrid as a highrate and long-cycle anode for lithium-ion batteries

Lithium-ion batteries (LIBs)have exhibited extraordinary prospects due to their high energy and power density. However, the future development of LIBs is largely impeded by poor rate performance and cycling stability of the graphite anode. Here, we demonstrate a practical niobium pentoxide and graphite (Nb_2O_5/G)hybrid anode for high-performance LIBs via the scalable high-energy ball milling method. The as-prepared Nb_2O_5/G anode shows fast charging capability due to outstanding electrochemical kinetics from the surface pseudocapacitive insertion reaction of Nb_2O_5. Therefore,compared with pure graphite, the optimized 10%-Nb_2O_5/G hybrid anode (WNb_2O_5: Wgraphite = 10:90)exhibited high rate capacity of 270.0 mAh·g~(-1) at the current density of 2.0C (1.0C = 372 mA·g~(-1))and high reversible capacity of 339.7 mAh·g~(-1) at 1.0C, together with better cyclic stability (340 cycles). This work provides an effective route toward LIBs with high rate and long cycle for a broad range of applications.
V_2CT_x MXene and its derivatives: synthesis and recent progress in electrochemical energy storage applications

With the continuous development of two-dimensional (2D)transition metal carbides and nitrides (collectively referred to as MXene). Nowadays, more than 70 MXene materials have been discovered, and the number is still increasing. Among them, the V_2CT_x MXene has attracted considerable attentions due to its outstanding physical and chemical properties. In this review, we mainly discussed the emerging V_2CT_x MXene and its derivative systems in various energy storage devices. Firstly, an introduction of the V-based MXene and its derivatives along with their synthetic methodologies is provided, then we summarize their applications in specific energy storage devices, such as metal (Li, Na, K, Mg, Zn and Al)ion batteries, lithium-sulfur batteries, supercapacitors and metal-ion capacitors. Finally, the main challenges and future perspectives existing in V-based MXene and its derivatives are reasonably put forward.
Laparoscopic vs. open lower mediastinal lymphadenectomy for Siewert type II/III adenocarcinoma of esophagogastric junction: An exploratory, observational, prospective, IDEAL stage 2b cohort study (CLASS-10 study)

Objective: This study aims to verify the feasibility and efficacy of laparoscopic lower mediastinal lymphadenectomy for Siewert type II/III adenocarcinoma of esophagogastric junction (AEG). Setting: An exploratory, observational, prospective, cohort study will be carried out under the Idea, Development, Exploration, Assessment and Long-term Follow-up (IDEAL) framework (stage 2b). Participants: The study will recruit 1,036 patients with cases of locally advanced AEG (Siewert type II/III, clinical stage cT2-4aN0-3M0), and 518 will be assigned to either the laparoscopy group or the open group. Interventions: Patients will receive lower mediastinal lymphadenectomy along with either total or proximal gastrectomy. Primary and secondary outcome measures: The primary endpoint is the number of lower mediastinal lymph nodes retrieved, and the secondary endpoints are the surgical safety and prognosis, including intraoperative and postoperative lower-mediastinal-lymphadenectomy-related morbidity and mortality, rate of rehospitalization, R0 resection rate, 3-year local recurrence rate, and 3-year overall survival. Conclusions: The study will provide data for the guidance and development of surgical treatment strategies for AEG.
Influence of Backbone and Axial Substituent of Catalyst on α-Imino-ketone Nickel Mediated Ethylene (Co)Polymerization

The α-imino-ketone nickel catalyst is an emerging versatile platform that is easy to prepare and allows for the production of branched high molecular weight functionalized polyethylenes. However, study on this catalyst system is rare thus far. In this contribution, by introducing different backbones, flexible and rigid axial substituents into the α-imino-ketone framework, a family of cationic nickel catalysts were synthesized and fully characterized. Without the addition of any activator, systematic studies on ethylene polymerization and copolymerization with polar monomers were performed to explore the influence of both backbone and axial substituent on catalytic activity, polymer molecular weight, branching density and incorporation. In particular, owing to the unique semi-opening feature of the α-imino-ketone framework, the preferred nickel catalyst exhibited high activity of 175 kg·mol~(-1)·h~(-1) to produce functionalized polyethylene with molecular weight of 13.4 kg·mol~(-1) and comonomer incorporation of 2.9 mol%.
Biodegradable Polymers, History Tells Polymer Science’s Fortune

Biodegradable polymer, according to the International Union of Pure and Applied Chemistry (IUPAC), is defined as “polymer susceptible to degradation by biological activity, with the degradation accompanied by a lowering of its molar mass”. More specifically, biodegradable polymer should ultimately degrade into CO_2 and water. The importance of biodegradable polymer is aroused due to the increasing concern on the rapidly growing volume of polymer waste after utilization, which is hard to recycle and exists “endless” in the earth since its birth. As microorganism is ubiquitous on earth, biodegradable polymer is usually chosen above other degradation modes for environmentally digestible polymers. Naturally, biodegradable polymers start from natural polymers like starch, cellulose, protein, etc., utilization of which dates back to the history of human civilization. Due to the length limits, this Editorial will focus on the development of synthetic biodegradable polymers pioneered in the early 1980s and mainly in China.
pH and lipase-responsive nanocarrier-mediated dual drug delivery system to treat periodontitis in diabetic rats

Precise and controlled drug delivery to treat periodontitis in patients with diabetes remains a significant clinical challenge.Nanoparticle-based drug delivery systems offer a potential therapeutic strategy;however,the low loading efficiency,non-responsiveness,and single effect of conventional nanoparticles hinder their clinical application.In this study,we designed a novel self-assembled,dual responsive,and dual drug-loading nanocarrier system,which comprised two parts:the hydrophobic lipid core formed by 1,2-Distearoyl-sn-glycero-3- phosphoethanolamine-Poly (ethylene glycol) (DSPE-PEG) loaded with alpha-lipoic acid (ALA);and a hydrophilic shell comprising a poly (amidoamine) dendrimer (PAMAM) that electrostatically adsorbed minocycline hydrochloride (Mino).This unique design allows the controlled release of antioxidant/ALA under lipase stimulation from periodontal pathogens and antimicrobial/Mino under the low pH of the inflammatory microenvironment.In vivo and in vitro studies confirmed that this dual nanocarrier could inhibit the formation of subgingival microbial colonies while promoting osteogenic differentiation of cells under diabetic pathological conditions,and ameliorated periodontal bone resorption.This effective and versatile drug-delivery strategy has good potential applications to inhibit diabetes-associated periodontal bone loss.
The enhanced photocatalytic sterilization of MOF-Based nanohybrid for rapid and portable therapy of bacteria-infected open wounds

Open wounds are prone to infection and difficult to heal,which even threatens the life of patients because bacterial infections can induce other lethal complications without prompt treatment.The commonly used antibiotics treatment for bacterial infections has been reported to cause globally bacterial resistance and even the occurrence of superbacteria.The highly effective and antibiotic-independent therapeutic strategies are urgently needed for treating various kinds of bacteria-infected diseases.In this work,we synthesized an eco-friendly nanohybrid material (ZnDMZ) consisting of a kind of biodegradable metal organic framework (MOF,ZIF-8) combined with Zn-doped MoS_2 (Zn-MoS_2) nanosheets,which exhibited great ability to kill bacteria and promote the healing of bacteria-infected wounds under 660 nm light irradiation.The underlying mechanism is that besides the local hyperthermia,the nanohybrid material exhibits enhanced photocatalytic performance than single component in it,i.e.,it can also be excited by 660 nm light to produce more oxygen radical species (ROS) due to the following factors.On one hand,the Zn doping can reduce the work function and the band gap of MoS_2,which promotes the movement of photoexcited electrons to the surface of the material.On the other hand,the combination between Zn-MoS_2 and MOF induces the formation of a built-in electric field due to their work function difference,thus accelerating the separation of photoexcited electron-hole pairs.Because of the synergy of photocatalytic effect,photothermal effect and the released Zn ions,the synthesized ZnDMZ possessed a highly effective antibacterial efficacy of 99.9% against Staphylococcus aureus under 660 nm light irradiation for 20 min without cytotoxicity.In vivo tests showed that this nanohybrid material promoted the wound healing due to the released Zn ions.This nanohybrid will be promising for rapid and portable treatment of bacteria-infected open wounds in pathogenic bacteria contaminated environments.
Nanocomposite electrospun fibers of poly(ε-caprolactone)/bioactive glass with shape memory properties

Electrospun fibers of shape memory triethoxysilane-terminated poly(epsilon-caprolactone) (PCL-TES) loaded with bioactive glasses (BG) are here presented. Unloaded PCL-TES, as well as PCL/BG nanocomposite fibers, are also considered for comparison. It is proposed that hydrolysis and condensation reactions take place between triethoxysilane groups of the polymer and the silanol groups at the BG particle surface, thus generating additional crosslinking points with respect to those present in the PCL-TES system. The as-spun PCL-TES/BG fibers display excellent shape memory properties, in terms of shape fixity and shape recovery ratios, without the need of a thermal crosslinking treatment. BG particles confer in vitro bioactivity to PCL-based nanocomposite fibers and favor the precipitation of hydroxycarbonate apatite on the fiber surface. Preliminary cytocompatibility tests demonstrate that the addition of BG particles to PCL-based polymer does not inhibit ST-2 cell viability. This novel approach of using bioactive glasses not only for their biological properties, but also for the enhancement of shape memory properties of PCL-based polymers, widens the versatility and suitability of the obtained composite fibers for a huge portfolio of biomedical applications.
Immunomodulation and osseointegration activities of Na2TiO_3 nanorods-arrayed coatings doped with different Sr content

To endow Ti-based orthopedic implants immunomodulatory capability and thus enhanced osseointegration, different amounts of Sr are doped in Na_2TiO_3 nanorods in the arrays with identical nanotopographic parameters (rod diameter, length and inter-rod spacing) by substitution of Na+ using hydrothermal treatment. The obtained arrays are denoted as STSr2, STSr4, and STSr7, where the arabic numbers indicate the incorporating amounts of Sr in Na_2TiO_3. The modulation effects of the Sr-doped nanorods arrays on macrophage polarization and osteogenetic functions of osteoblasts are investigated, together with the array without Sr (ST). Moreover, osseointegration of these arrays are also assayed in rat femoral condyles. Sr-doped nanorods arrays accelerate M1 (proinflammatory phenotype)-to-M2 (anti-inflammatory phenotype) transformation of the adhered macrophages, enhancing secretion of pro-osteogenetic cytokines and growth factors (TGF-β1 and BMP2), moreover, the Sr doped arrays directly enhance osteogenetic functions of osteoblasts. The enhancement of paracrine of M2 macrophages and osteogenetic function of osteoblasts is promoted with the increase of Sr incorporating amounts. Consequently, Sr doped arrays show significantly enhanced osseointegration in vivo compared to ST, and STSr7 exhibits the best performance. Our work sheds a new light on the design of surface chemical components and structures for orthopedic implants to enhance their osseointegration.
Neonatal Fc receptor-targeted lignin-encapsulated porous silicon nanoparticles for enhanced cellular interactions and insulin permeation across the intestinal epithelium

Oral insulin delivery could change the life of millions of diabetic patients as an effective, safe, easy-to-use, and affordable alternative to insulin injections, known by an inherently thwarted patient compliance. Here, we designed a multistage nanoparticle (NP) system capable of circumventing the biological barriers that lead to poor drug absorption and bioavailability after oral administration. The nanosystem consists of an insulin-loaded porous silicon NP encapsulated into a pH-responsive lignin matrix, and surface-functionalized with the Fc fragment of immunoglobulin G, which acts as a targeting ligand for the neonatal Fc receptor (FcRn). The developed NPs presented small size (211 ± 1 nm) and narrow size distribution. The NPs remained intact in stomach and intestinal pH conditions, releasing the drug exclusively at pH 7.4, which mimics blood circulation. This formulation showed to be highly cytocompatible, and surface plasmon resonance studies demonstrated that FcRn-targeted NPs present higher capacity to interact and being internalized by the Caco-2 cells, which express FcRn, as demonstrated by Western blot. Ultimately, in vitro permeability studies showed that Fc-functionalized NPs induced an increase in the amount of insulin that permeated across a Caco-2/HT29-MTX co-culture model, showing apparent permeability coefficients (P_(app)) of 2.37 ×10~(-6) cm/s, over the 1.66 ×10~(-6) cm/s observed for their non-functionalized counterparts. Overall, these results demonstrate the potential of these NPs for oral delivery of anti-diabetic drugs.
Joining of Co coated ferritic stainless steel to ceramic solid oxide cells by a novel Ag-SiO_2 braze

A novel Ag-SiO_2 braze for Solid Oxide Cells was successfully developed and applied to join Co coated AISI 441 ferritic stainless steel to YSZ-NiO half cells. The braze showed an improved wettability on the coated steel and the YSZ compared to pure Ag. A defect-free steel/YSZ joint was obtained using an Ag-1SiO_2 braze jointed at 10 0 0 °C for 30 min in air. The microstructure of the joints was characterized by scanning electron microscopy and transmission electron microscopy with energy-dispersive X-ray spectroscopy. Furthermore, a Co-Si-O_2 phase diagram was calculated and used to explain the experimental results and formulate a reaction mechanism. It was found, that during the air brazing process, Co_3 O_4 and (Co, Fe)_3 O_4 are formed by the oxidation of the prefabricated Co coating. The growth of Cr_2 O_3 was effectively impeded by the formed Co-based spinels. In a second step, Co_3 O_4 reacts with the SiO_2 present in braze. The Co_2 SiO_4 formed by the reaction ensures a firm bonding between the steel and Ag-SiO_2 braze.