bluuebunny/crossref_metadata_2025_split huggingface dataset:
2D Bismuthene as a Functional Interlayer between BiVO4 and NiFeOOH for Enhanced Oxygen‐Evolution Photoanodes
Authors: Cui Junyi , Daboczi Matyas , Regue Miriam , Chin Yi‐Chun , Pagano Katia , Zhang Jifang , Isaacs Mark A. , Kerherve Gwilherm , Mornto Aris , West James , Gimenez Sixto , Kim Ji‐Seon , Eslava Salvador 
Published: September 2022

AbstractBiVO4 has attracted wide attention for oxygen‐evolution photoanodes in water‐splitting photoelectrochemical devices. However, its performance is hampered by electron‐hole recombination at surface states. Herein, partially oxidized two‐dimensional (2D) bismuthene is developed as an effective, stable, functional interlayer between BiVO4 and the archetypal NiFeOOH co‐catalyst. Comprehensive (photo)electrochemical and surface photovoltage characterizations show that NiFeOOH can effectively increase the lifetime of photogenerated holes by passivating hole trap states of BiVO4; however, it is limited in influencing electron trap states related to oxygen vacancies (VO). Loading bismuthene on BiVO4 photoanodes increases the density of VO that are beneficial for the oxygen evolution reaction via the formation of oxy/hydroxyl‐based water oxidation intermediates at the surface. Moreover, bismuthene increases interfacial band bending and fills the VO‐related electron traps, leading to more efficient charge extraction. With the synergistic interaction of bismuthene and NiFeOOH on BiVO4, this composite photoanode achieves a 5.8‐fold increase in photocurrent compared to bare BiVO4 reaching a stable 3.4 (±0.2) mA cm–2 at a low bias of +0.8 VRHE or 4.7(±0.2) mA cm–2 at +1.23 VRHE. The use of 2D bismuthene as functional interlayer provides a new strategy to enhance the performance of photoanodes.
A High Power Density Zn‐Nitrate Electrochemical Cell Based on Theoretically Screened Catalysts
Authors: Lin Wan , Zhou Enbo , Xie Jia‐Fang , Lin Jing , Wang Yaobing 
Published: September 2022

AbstractDesigning artificial nitrogen fixing devices with functions of light energy adsorption and driven nitrogen species upgrade and oxygen evolution is highly attractive. However, advanced catalytic materials for key NO3‐‐to‐NH4+ and OH‐‐to‐O2 reactions are rather rare. Herein, first principle calculations are performed to pre‐screen target catalysts and then the effective catalyst in the experiment is successfully prepared, with which, a high power density Zn‐nitrate electrochemical cell is demonstrated. The cathode catalyst can promote both reductive NO3‐‐to‐NH4+ and oxidative OH‐‐to‐O2 reactions in low‐overpotential pathways, contributing to the total battery reaction: NO3‐ + 3H2O → NH4+ + 2OH‐ + 2O2. The resulting electrochemical cell shows over 90% NO3‐‐to‐NH4+ selectivity, a high power density over 25 mW cm‐2, and stable 35 h cycling at 12.5 mA cm‐2. Moreover, this Zn‐nitrate electrochemical cell can work driven by the photovoltaic cell with the solar‐to‐NH3 efficiency up to 19.5%. This study demonstrates a theoretically screened catalyst realizing a photovoltaic driven high‐rate Zn‐nitrate electrochemical cell system, which mimics soybean system upgrading N species and producing oxygen.
Engineering Novel 3D Models to Recreate High‐Grade Osteosarcoma and its Immune and Extracellular Matrix Microenvironment
Authors: Pierrevelcin Marina , Flacher Vincent , Mueller Christopher G. , Vauchelles Romain , Guerin Eric , Lhermitte Benoît , Pencreach Erwan , Reisch Andreas , Muller Quentin , Doumard Layal , Boufenghour Wacym , Klymchenko Andrey S. , Foppolo Sophie , Nazon Charlotte , Weingertner Noelle , Martin Sophie , Briandet Claire , Laithier Véronique , Di Marco Antonio , Bund Laurent , Obrecht Adeline , Villa Pascal , Dontenwill Monique , Entz‐Werlé Natacha 
Published: September 2022

AbstractOsteosarcoma (OS) is the most common primary bone cancer, where the overall 5‐year surviving rate is below 20% in resistant forms. Accelerating cures for those poor outcome patients remains a challenge. Nevertheless, several studies of agents targeting abnormal cancerous pathways have yielded disappointing results when translated into clinic because of the lack of accurate OS preclinical modeling. So, any effort to design preclinical drug testing may consider all inter‐, intra‐, and extra‐tumoral heterogeneities throughout models mimicking extracellular and immune microenvironment. Therefore, the bioengineering of patient‐derived models reproducing the OS heterogeneity, the interaction with tumor‐associated macrophages (TAMs), and the modulation of oxygen concentrations additionally to recreation of bone scaffold is proposed here. Eight 2D preclinical models mimicking several OS clinical situations and their TAMs in hypoxic conditions are developed first and, subsequently, the paired 3D models faithfully preserving histological and biological characteristics are generated. It is possible to shape reproducibly M2‐like macrophages cultured with all OS patient‐derived cell lines in both dimensions. The final 3D models pooling all heterogeneity features are providing accurate proliferation and migration data to understand the mechanisms involved in OS and immune cells/biomatrix interactions and sustained such that engineered 3D preclinical systems will improve personalized medicine.
Pseudocatalytic Hydrogels with Intrinsic Antibacterial and Photothermal Activities for Local Treatment of Subcutaneous Abscesses and Breast Tumors
Authors: Ma Yan , Sun Yanbin , Xu Lingling , Li Xueqiao , Gong Deyan , Miao Zhaohua , Qian Haisheng 
Published: September 2022

AbstractThe intimate relationship between bacteria and tumors has triggered a lot of activities in the development and design of bioactive materials to concurrently respond to antitumor and antibacterial demands. Herein, a pseudocatalytic hydrogel (AM‐I@Agar) with intrinsic antibacterial and photothermal activities, synthesized by incorporating prefabricated amylose‐iodine nanoparticles into low‐melting‐point agarose hydrogel, is explored as a bioactive agent for local treatment of subcutaneous abscesses and breast tumors. The AM‐I@Agar hydrogel depicts the ability of pseudocatalytic O2 generation from H2O2 to alleviate hypoxia. Meanwhile, the AM‐I@Agar hydrogel exhibits temperature self‐regulation features, beneficial for avoiding thermal injury during photothermal therapy owing to thermochromic properties. Upon local injection into a subcutaneous abscess, methicillin‐resistant Staphylococcus aureus is effectively eliminated by the AM‐I@Agar hydrogel, and complete skin recovery is achieved in 8 d, demonstrating much better antibacterial effects compared with penicillin, a small‐molecule antibiotic. AM‐I/5‐FU@Agar hydrogel, obtained after loading 5‐fluorouracil (5‐FU), significantly inhibits tumors in both normal 4T1 tumor‐bearing mice and MRSA‐infected 4T1 tumor‐bearing mice models via a synergistic photothermal‐chemo effect, and shows treatment efficiency superior to that achieved with photothermal therapy or 5‐FU alone. This work provides a concept for the design and development of bioactive agents for potential management of bacteria‐associated cancer.
Open‐Chip Droplet Splitting in Electrowetting
Authors: Sagar Nitish , Bansal Shubhi , Sen Prosenjit 
Published: September 2022

AbstractElectrowetting‐on‐dielectric (EWOD) has emerged as a powerful technique to perform on‐chip droplet operations like transportation, dispensing, splitting, and mixing in sandwiched droplets. In contrast, open‐chip droplet manipulation using electrowetting enables micro‐total‐analysis systems with multiple sensor integration and re‐routing capabilities. Droplet splitting has been the bottleneck in developing open‐chip platforms. Droplet splitting on an open‐chip platform using electrowetting‐on‐dielectric is presented. An energy‐based simulation model has been developed. It shows that splitting a sessile water droplet is impossible on an open‐chip configuration because of the low pad contact angle requirement. Low contact angles cannot be achieved due to contact angle saturation in electrowetting. It is experimentally shown that splitting is possible if the droplet is engulfed in an oil shell (i.e., in compound droplets). The planar electrode configurations and regime of electrowetting numbers for which splitting can be achieved are identified. It is observed that larger gaps and higher electrowetting numbers favor symmetrical splitting because the electrostatic force driving the actuation is significantly higher than the retarding interfacial forces. Conversely, asymmetrical splitting has been obtained when the actuation force is barely sufficient. Further the splitting of surfactant‐loaded single‐phase sessile droplets is demonstrated and a preferential surface charging phenomenon is explained.
Superhydrophobic Materials: Versatility and Translational Applications
Authors: Yong Haiyang , Li Zhili , Huang Xiaobei , Wang Kaixuan , Zhou Ya‐Nan , Li Qiuxia , Shi Jianjun , Liu Ming , Zhou Dezhong 
Published: September 2022

AbstractInspired by the lotus leaf in nature, superhydrophobic materials have attracted considerable attention in both science and industry over the past three decades. Apart from the most characteristic yet widely used properties such as waterproofing, anti‐fouling, and self‐cleaning, superhydrophobic materials have also developed exciting new functions such as drag reduction, corrosion resistance, anti‐icing, anti‐bacteria, and anti‐reflection. In this review article, the theoretical models describing superhydrophobic surfaces are first briefly introduced. Then, the most common substrates and strategies for fabricating superhydrophobic surfaces are presented. After that, the application scenarios for superhydrophobic materials in various fields of daily life are systematically presented, from transportation, architecture/building protection, oil/water separation, and seawater desalination to biomedical device fabrication, biosensing, energy conversion and utilization, and textile manufacturing. In particular, the special functional properties are presented and the most representative applications of superhydrophobic materials in the last decade are highlighted. Finally, the potential challenges in translating superhydrophobic materials from the laboratory to practical applications are discussed.
Adhesion Energy Modulation Acts as an NGF Receptor Activator for Neuronal Differentiation in NGF‐Free Medium
Authors: Sénépart Océane , Legay Claire , Helary Christophe , Hamraoui Ahmed 
Published: September 2022

AbstractNeuronal repair is promoted after a nerve injury by chemical and physical stimuli from their environment. Among them, local adhesion energy gradients generated on surfaces trigger cone formation and neurite outgrowth without any nerve growth factor (NGF) addition. In this study, the molecular mechanisms leading to neuronal differentiation after stimulation via energy gradients are investigated. For this purpose, PC12 cells are cultured on n‐[3‐(trimethoxysilyl)propyl] ethylendiamine (EDA) and n‐hexyl trimethoxysilane (HTMS), two functionalized surfaces possessing local energy gradients but chemically different. These surfaces similarly trigger neurite and growth cone formation after 3 days in culture. Gene expression of PI3/Akt quantified through a microarray and the action of a specific inhibitor of the corresponding pathway reveal that PI3/Akt signaling pathway is induced and activated on these surfaces in the same way as NGF does after binding on its TrkA receptor. The biological downstream effectors of this signaling pathway are also upregulated, thereby promoting cell survival, growth cone formation, and neurite outgrowth. EDA and HTMS surfaces act as an ongoing stimulus of the TrkA receptor as the addition of 100 nM K252a, its specific inhibitor, leads to the inhibition of neurite growth. Taken together, these results suggest that functionalized surface with energy surface gradients could be useful to promote nerve repair after an injury.
A Critical Review on New and Efficient 2D Materials for Catalysis
Authors: Zhao Liping , Wang Bingquan , Wang Rui 
Published: September 2022

AbstractThe unique structure and properties of graphene make it have excellent performance in the field of catalysis. It can be modified in various ways to improve its catalytic ability. Notably, other 2D materials with similar properties to graphene (black phosphorus (BP), 2D transition metal dichalcogenides represented by molybdenum disulfide (MoS2) and tungsten disulfide (WS2), boron nitride (BN), and transition metal carbide and nitride (MXenes) and their hybrid materials also have a wide range of applications in the field of catalysis. In general, 2D materials can be used as catalysts, catalytic supports or electron donors. Therefore, they have been widely used in many catalytic reactions in recent years, such as photocatalysis, thermocatalysis, and electrocatalysis. In this paper, the research progress of the above 2D materials in the catalytic degradation of organic matter in water and carbon dioxide reduction reaction (CO2RR) is summarized. In addition, some excellent composite 2D catalysts in the fields of photocatalysis and electrocatalysis are summarized and compared. Finally, the opportunities and challenges of the above 2D materials in the field of catalysis are pointed out, and the development prospects of the 2D materials in the field of catalysis are addressed.
Interfacial Catalysis Enabled Acetone Sensors Based on Rationally Designed Mesoporous Metal Oxides with Erbium‐Doped WO3 Framework
Authors: Liu Yan , Li Yanyan , Gao Meiqi , Yuan Chenyi , Ren Yuan , Xie Wenhe , Yang Xuanyu , Liao Yaozu , Zou Yidong , Deng Yonghui 
Published: September 2022

AbstractThe emerging combination of Internet of Things requires the development of intelligent gas sensor, and semiconductor gas sensors based on metal oxides have been widely applied in industrial production, environmental monitoring, and food safety. Although versatile nanomaterials have been exploited as gas sensitive materials, restricted gas sensing performance including sensitivity, selectivity and stability, is still the fatal problem of practical applications. Herein, inspired by heteratomic doping engineering, unique rare earth erbium (Er)‐doped mesoporous tungsten oxide (Er/mWO3) has been synthesized via one‐step collaborative coassembly strategy, and Er ion‐doped mWO3 exhibited peculiarly hexagonal mesostructure (P63/mmc), tunable specific surface area (58.1–78.3 m2 g–1), uniform mesoporous size and highly crystallized framework with heteroatomic pore wall doping. The introduction of Er can significantly adjust the micro/nano structure and band characteristics, and 1.5 wt% Er‐doped mWO3 displays superior acetone sensing performance, including high response values (107 for 50 ppm), rapid response–recovery dynamics (9/56 s), prominent acetone selectivity, low concentration detection (125 ppb), anti‐humidity property and excellent long‐term stability. Such an excellent sensing performance is mainly attributed to unique interfaces catalytic sites induced by heteroatom interstitial doping. This finding opens a door for the design of smart gas sensors for environmental monitoring and industrial safety.
Widening the Sensing Range of Piezoresistive Composites by Constructing Multilevel Porous Structure
Authors: Li Linhua , Li Yunxia , Liu Zhanqi , Chen Tao , Jiang Xiao , Zhang Zemin , Wang Fangcong , Han Weihua 
Published: September 2022

AbstractPiezoresistive composite is one of the promising candidates for wearable and flexible force sensors due to its simple and low‐cost preparation and conformability to various surfaces. However, it is challenging to achieve a wide sensing range and a high sensitivity simultaneously. Herein, it is proposed to use multilevel porous structure to address the conflict between sensing range and pressure sensitivity. The multilevel porous structure consists of alternately stacked polyacrylonitrile nanofibers and silver nanowires. The nanostructure presents a multilevel deformation when increasing the applied pressure. The sensor has a broad sensing range while maintaining its sensitivity. These results show that the pressure sensor has a superior sensitivity (defined by the resistance change ratio per unit pressure) of 0.437 kPa–1 and a wide stress range of 0–48.4 kPa. The unique multilevel porous structure makes the sensor stable, repeatable, and durable even after a test of 8000 cycles. Moreover, the sensor also shows small size and lightweight which can be used to detect the movement of various body motions, including facial muscle movements, vocalization, and joint motions. This work provides an effective strategy to achieve high sensitivity and a broad range of piezoresistive sensor through rationally building a multilevel porous structure.
Microfluidic Synthesis of Hydrogel Microparticles with Superparamagnetic Colloids Embedded at Prescribed Positions for Anticounterfeiting Applications
Authors: Zhang Mengmeng , Warth Thom , Boon Niels , Demirörs Ahmet Faik , Eral Hüseyin Burak 
Published: September 2022

AbstractA microfluidic platform for continuous synthesis of hydrogel microparticles with superparamagnetic colloids (SPCs) embedded at prescribed positions is described. The shape of the cross‐linked microparticle is independently controlled by stop–flow lithography, whereas the position of trapped SPCs are dictated by virtual magnetic moulds made of 2D nickel patches facilitating magnetic trapping. The spatial positions of trapped SPCs collectively function as a binary code matrix for product authentication. Analytical and finite element methods are combined to optimize the trapping efficiency of SPCs by systematically investigating magnetic field microgradients produced by nickel patches. It is envisioned that the proposed magnetic microparticles will contribute to the development of soft matter inspired product quality control, tracking and anti‐counterfeiting technologies.
Reverse Dual‐Ion Battery by Coupling Adsorption and Conversion Mechanism
Authors: Li Yong , Zhang Jian , Yuan Qingyan , Wu Yunjia , Han Jingbin 
Published: September 2022

AbstractAs one kind of promising energy storage device, dual‐ion batteries (DIBs) have attracted extensive attention because of their high voltage, environmental friendliness, and low cost. However, they generally suffer from low power density resulting from sluggish kinetic of electrolyte anion intercalation. In this work, a new strategy to break through the trade‐off of power density and energy density in DIBs is proposed. A vanadium‐doped anatase is synthesized by the hydrothermal method and used as the cathode of DIB (employing Li as the anode). During the charging/discharging process, the organic cations in the electrolyte are reversibly adsorbed–desorbed at the cathode; while a conversion reaction of Li/LiCl occurs at the anode. The effective integration of cation adsorption and conversion reaction mechanism results in a large power density of 1532 W kg−1 along with a high energy density of 214 Wh kg−1 at 1 A g−1. This design concept is universal and has been successfully transplanted to cation/Br− DIB. Therefore, this work provides a novel approach to optimize the energy/power density of DIBs, which is highly desired in constructing high‐performance energy storage devices.
Smooth Transparent Omniphobic Coatings with Remarkable Liquid Repellence
Authors: Mayoussi Fadoua , Chen Yunong , Mössner Daniela , Franco Corredor Santiago , Goralczyk Andreas , Mader Markus , Warmbold Andreas , Kotz‐Helmer Frederik , Helmer Dorothea , Rapp Bastian E. 
Published: September 2022

AbstractLiquid repellent surfaces are of high interest in various fields like protective coatings and droplet manipulation due to their outstanding properties from self‐cleaning to anti‐fouling. Most reported surfaces rely on the fabrication of micro/‐nanostructured surfaces, the infusion of porous surfaces with immiscible lubricants, or the grafting of monolayers with low surface energy to achieve repellence of various liquids. However, these methods are limited in terms of their durability and long‐term stability. Here, the fabrication of smooth, transparent fluorinated poly (perfluoroalkyl methacrylate) coatings via UV‐initiated radical polymerization in a simple one‐step procedure is reported. The resulting surfaces show very low surface energies of down to 7 mN m−1, low contact angle hysteresis below 5°, very good repellence towards various liquids with different polarities as well as self‐cleaning and anti‐graffiti ability. The fabricated coatings can be applied to various substrates from glass slides to microfiber cloths. This demonstrates that they outperform common commercially available fluorinated coatings, such as, for example, Hyflon AD 40L S, in terms of liquid repellence and their performance in real‐world applications.
Regulation of Interfacial Polarization and Local Electric Field Strength Achieved Highly Energy Storage Performance in Polyetherimide Nanocomposites at Elevated Temperature via 2D Hybrid Structure
Authors: Ding Xiangping , Pan Zhongbin , Zhang Yong , Shi Songhan , Cheng Yu , Chen Hanxi , Li Zhicheng , Fan Xu , Liu Jinjun , Yu Jinhong , Zhai Jiwei 
Published: September 2022

AbstractDielectric materials with excellent high‐temperature energy storage performances are urgently demanded in advanced electronic market. However, the sharply reduced energy storage capabilities caused by conduction loss impede the applications of polymer‐based nanocomposites at harsh environments. In this work, the 2D hybrid structure fillers of boron nitride nanosheets‐titanium dioxide (BNNSs‐TiO2), where TiO2 nanoparticles tightly wrap around the 2D BNNSs, are fused with polyetherimide (PEI) forming polymer nanocomposite films. The finite element simulation and experiment results indicate that the hybrid structure 2D BNNSs‐TiO2 can effectively regulate local electric field strength and interfacial polarization, facilitating the enhancement in energy storage properties. Accordingly, the composite film delivers a superior discharged energy density (≈4 J cm−3) and charging/discharging efficiency (≈90%) at 150 °C, better than recently discussed high‐temperature pristine polymer and their composite films. This contribution offers a feasible idea to explore reliable dielectric capacitors at high temperature.
Graphene Oxide as a Biocompatible and Osteoinductive Agent to Promote Implant Osseointegration in a Rabbit Tibia Model
Authors: Kwak Jeong Min , Kim Jungho , Lee Chung‐Sung , Park Il‐Soo , Lee Min , Min Dal‐Hee , Yeo In‐Sung Luke 
Published: September 2022

AbstractGraphene, a nanomaterial made of sp2 hybridized carbon atoms, has recently been investigated as a novel surface treatment for promoting osseointegration. This study aims to evaluate the biological effects of graphene oxide (GO) on turned and sandblasted, large‐grit, and acid‐etched (SLA) titanium surfaces. In vitro, bone marrow stromal cells (BMSCs) and human gingival fibroblasts (HGFs) are seeded onto titanium discs, whose surfaces have been treated in four different ways (SLA and/or GO), to observe its effects on cellular responses such as adhesion, proliferation and differentiation. In vivo, a rabbit tibia model is used to observe the effects of the four surface treatments on osseointegration of screw‐shaped titanium implants. The bone‐to‐implant contact is analyzed using light microscopic histomorphometry. GO significantly promotes the viability, proliferation and osteoblast differentiation of BMSCs, and it enhances the attachment and proliferation of HGFs. SLA and GO treatment of implant surfaces results in significant improvement of osseointegration in vivo. Physicochemical modification of the titanium surface by SLA treatment and GO coating stimulates osteogenic activities of mesenchymal stem cells and improves biocompatibility to connective tissue cells, leading to enhancement of bone healing at the bone‐implant interface.