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Heterostructure of RuO2 -RuP2 /Ru Derived from HMT-based Coordination Polymers as Superior pH-Universal Electrocatalyst for Hydrogen Evolution Reaction.

Ying Zhao, Xiaoyin Zhang, Yuxiao Gao, Zhi Chen, Zhenjiang Li, Tianyi Ma, Zexing Wu, Lei Wang, Shouhua Feng,

Searching for Pt-like activity, stable and economic electrocatalysts that can function at various pH values for the hydrogen evolution reaction (HER) is under increasing interest for the scientific community as H<sub>2</sub> is a very promising energy carrier with great potential development value for renewable energy conversion. Herein, a unique self-supported ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105168]

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Recent Advances in ZIF-Derived Atomic Metal-N-C Electrocatalysts for Oxygen Reduction Reaction: Synthetic Strategies, Active Centers, and Stabilities.

Chen Gao, Shengdong Mu, Rui Yan, Fan Chen, Tian Ma, Sujiao Cao, Shuang Li, Lang Ma, Yinghan Wang, Chong Cheng,

Exploring highly active, stable electrocatalysts with earth-abundant metal centers for the oxygen reduction reaction (ORR) is essential for sustainable energy conversion. Due to the high cost and scarcity of platinum, it is a general trend to develop metal-N-C (M-N-C) electrocatalysts, especially those prepared from the zeolite imidazolate framework (ZIF) to ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105409]

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Boosting Electrocatalytic Activity of Single Atom Catalysts Supported on Nitrogen-Doped Carbon through N Coordination Environment Engineering.

Xiaoran Zhang, Xiaomin Xu, Sixian Yao, Chao Hao, Can Pan, Xue Xiang, Zhi Qun Tian, Pei Kang Shen, Zongping Shao, San Ping Jiang,

Nonprecious group metal (NPGM)-based single atom catalysts (SACs) hold a great potential in electrocatalysis and dopant engineering has been extensively exploited to boost their catalytic activity, while the coordination environment of dopant, which also significantly affects the electronic structure of SACs, and consequently their electrocatalytic performance, have been largely ignored. ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105329]

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Reversible Near-Infrared Fluorescence Photoswitching in Aqueous Media by Diarylethene: Toward High-Accuracy Live Optical Imaging.

Hye-Youn Jung, Boram Kim, Min Ho Jeon, Yoonkyung Kim,

Fluorescence imaging is an indispensable tool in modern biological research, allowing simple and inexpensive color-coded visualizations of real-time events in living cells and animals, as well as of fixed states of ex vivo specimens. The accuracy of fluorescence imaging in living systems is, however, impeded by autofluorescence, light scattering, and ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2103523]

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Fast Photostriction in Ferroelectrics.

Weng Heng Liew, Yunjie Chen, Marin Alexe, Kui Yao,

Light-induced nonthermal strain, known as the photostrictive effect, offers a potential way to excite mechanical strain and acoustic wave remotely. The anisotropic photostrictive effect induced by the combination of bulk photovoltaic effect (BPVE) and converse piezoelectric effect in ferroelectric materials is known as too small and slow for the applications ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106275]

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In-Situ Silica Xerogel Assisted Facile Synthesis of Fe-N-C Catalysts with Dense Fe-Nx Active Sites for Efficient Oxygen Reduction.

Maosong Liu, Lijuan Wang, Long Zhang, Yiran Zhao, Kangmin Chen, Yanxiao Li, Xiaohua Yang, Long Zhao, Shuhui Sun, Jianming Zhang,

In the past decade, atomically dispersed Fe active sites (coordinated with nitrogen) on carbon materials (FeNC) have emerged rapidly as promising single-atom catalysts (SACs) for the oxygen reduction reaction (ORR) to substitute precious group metal (PGM) catalysts, owing to their earth abundance and low cost. Nonetheless, the production of highly ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2104934]

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Screening and Understanding Lattice Silicon-Controlled Catalytically Active Site Motifs from a Library of Transition Metal-Silicon Intermetallics.

Hui Chen, Mingcheng Zhang, Kexin Zhang, Zhenyu Li, Xiao Liang, Xuan Ai, Xiaoxin Zou,

A joint theoretical and experimental study is reported to systematically explore over a library of transition metal-silicon intermetallics for understanding silicon-controlled active site motifs and discovering hydrogen-evolving electrocatalysts. On the one hand, every low-index surface termination of 115 transition metal (M)-silicon (Si) intermetallics is enumerated, followed by cataloging of stable ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2107371]

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A Multifunctional Silicon-Doped Polyether Network for Double Stable Interfaces in Quasi-Solid-State Lithium Metal Batteries.

Qi Zhang, Xiao Liu, Hao Li, Zhijie Guo, Tengfei Bian, Xuebing Zhu, Niannian Zhan, Yong Zhao,

Polymer-based quasi-solid-state electrolyte (QSE) is an effective means to solve the safety problem of lithium (Li) metal batteries, and stable solid-electrolyte-interface (SEI) layers between electrolyte and anode/cathode are highly required for their long-term stability. Herein, it is demonstrated that a silicon-doped polyether functions as a multifunctional unit, which can induce ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106395]

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Constructing High Efficiency CoZnx Mn2-x O4 Electrocatalyst by Regulating the Electronic Structure and Surface Reconstruction.

Depeng Zhao, Rui Zhang, Meizhen Dai, Hengqi Liu, Wei Jian, Fu-Quan Bai, Xiang Wu,

It is an effective strategy to develop novel electrocatalysts with controllable defects to enhance their electrocatalytic activity and stability. However, how to precisely design these catalysts on the atom scale remains very difficult. Herein, several vacancy-dependent CoZn<sub>x</sub> Mn<sub>2-x</sub> O<sub>4</sub> catalysts are prepared through tailoring the concentration of Zn ions. The ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2107268]

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Ionic Liquid-Assisted Fast Synthesis of Carbon Dots with Strong Fluorescence and Their Tunable Multicolor Emission.

Mengyan Cao, Xiujian Zhao, Xiao Gong,

Conventional synthesis of carbon dots (CDs) mostly involves a hydrothermal or solvent-thermal reaction which needs relatively high temperature and pressure. In this work, ionic liquid is used to assist in fast synthesizing CDs with an ultrahigh photoluminescent quantum yield (98.5%) by heating at a low temperature (≤100 °C) and at atmospheric ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106683]

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Direct Observation of Orbital Driven Strong Interlayer Coupling in Puckered Two-Dimensional PdSe2.

Jung Hyun Ryu, Jeong-Gyu Kim, Bongjae Kim, Kyoo Kim, Sooran Kim, Jae-Hoon Park, Byeong-Gyu Park, Younghak Kim, Kyung-Tae Ko, Kimoon Lee,

Interlayer coupling between individual unit layers is known to be critical in manipulating the layer-dependent properties of two-dimensional (2D) materials. While recent studies have revealed that several 2D materials with significant degrees of interlayer interaction (such as black phosphorus) show strongly layer-dependent properties, the origin based on the electronic structure ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106053]

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Ion Migration in Organic-Inorganic Hybrid Perovskite Solar Cells: Current Understanding and Perspectives.

Weike Zhu, Shurong Wang, Xin Zhang, Aili Wang, Cheng Wu, Feng Hao,

Organic-inorganic hybrid perovskite (OIHPs) solar cells are the most promising alternatives to traditional silicon solar cells, with a certified power conversion efficiency beyond 25%. However, the poor stability of OHIPs is one of the thorniest obstacles that hinder its commercial development. Among all the factors affecting stability, ion migration is ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105783]

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A Robust Approach to In Situ Exsolve Highly Dispersed and Stable Electrocatalysts.

Mengchu Wang, Bike Zhang, Jiaqi Ding, Fanxing Zhang, Rui Tu, Matthew T Bernards, Yi He, Pengfei Xie, Yao Shi,

Catalysts made of in situ exsolved metal nanoparticles often demonstrate promising activity and high stability in many applications. However, the traditional approach is limited by perovskites as prevailing precursor and requires high temperature typically above 900 K. Here, with the guidance of theoretical calculation, an unprecedented and substantially facile technique ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105741]

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Water-Processable and Multiscale-Designed Vanadium Oxide Cathodes with Predominant Zn2+ Intercalation Pseudocapacitance toward High Gravimetric/Areal/Volumetric Capacity.

Xiong Liu, Wentao Ni, Yuan Wang, Yongle Liang, Banghui Wu, Guobao Xu, Xiaolin Wei, Liwen Yang,

Layered vanadium oxides have great potential as cathode materials for recently surged aqueous zinc-ion batteries (AZIBs). However, achieving high energy/power densities simultaneously is challenging, and side reactions related to more frequently than disclosed Zn<sup>2+</sup> /proton co-insertion mechanism aggravate stability concerns. Herein, an engineered binder-free cathode configuration based on water-processable and ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105796]

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Smart Film Actuators for Biomedical Applications.

Zhuohao Zhang, Yu Wang, Qiao Wang, Luoran Shang,

Taking inspiration from the extremely flexible motion abilities in natural organisms, soft actuators have emerged in the past few decades. Particularly, smart film actuators (SFAs) demonstrate unique superiority in easy fabrication, tailorable geometric configurations, and programmable 3D deformations. Thus, they are promising in many biomedical applications, such as soft robotics, ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105116]

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A Shape-Programmable Hierarchical Fibrous Membrane Composite System to Promote Wound Healing in Diabetic Patients.

Weichang Li, Laibo Jiang, Shujie Wu, Shiwen Yang, Lin Ren, Bin Cheng, Juan Xia,

Chronic wound infection is one of the critical complications of diabetes and is difficult to cure. Although great efforts have been made, the development of special dressings that serve as therapeutic strategies to effectively promote wound healing in diabetic individuals remains a major challenge. In this study, a shape-programmable hierarchical ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2107544]

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A Solid-Phase Conversion Sulfur Cathode with Full Capacity Utilization and Superior Cycle Stability for Lithium-Sulfur Batteries.

Xiangjiang Wu, Qian Zhang, Guo Tang, Yuliang Cao, Hanxi Yang, Hui Li, Xinping Ai,

Solid phase conversion sulfur cathode is an effective strategy for eliminating soluble polysulfide intermediates (LiPSs) and improving cyclability of Li-S batteries. However, realizing such a sulfur cathode with high sulfur loading and high capacity utilization is very challenging due to the insulating nature of sulfur. In this work, a strategy ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106144]

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Enzyme-Loaded Hemin/G-Quadruplex-Modified ZIF-90 Metal-Organic Framework Nanoparticles: Bioreactor Nanozymes for the Cascaded Oxidation of N-hydroxy-l-arginine and Sensing Applications.

Chaochao Chen, Margarita Vázquez-González, Michael P O'Hagan, Yu Ouyang, Zhanhui Wang, Itamar Willner,

Biocatalytic cascades are challenging to operate in homogeneous solution, where diffusional mass transport hinders efficient communication between the reactive components. There is great interest in developing devices to perform such transformations in confined environments, which increase the efficiency of the cascaded process by generating high local concentrations of the reactive ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2104420]

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Nitrogen-Doped Carbon Polyhedrons Confined Fe-P Nanocrystals as High-Efficiency Bifunctional Catalysts for Aqueous Zn-CO2 Batteries.

Shuai Liu, Lei Wang, Hui Yang, Sanshuang Gao, Yifan Liu, Shusheng Zhang, Yu Chen, Xijun Liu, Jun Luo,

Emerging Fe bonded with heteroatom P in carbon matrix (FePC) holds great promise for electrochemical catalysis, but the design of highly active and cost-efficient FePC structure for the electrocatalytic CO<sub>2</sub> reduction reaction (CO<sub>2</sub> RR) and aqueous ZnCO<sub>2</sub> batteries (ZCBs) is still challenging. Herein, polyhedron-shaped bifunctional electrocatalysts, FeP nanocrystals anchored in ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2104965]

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Metal-Organic Frameworks for NOx Adsorption and Their Applications in Separation, Sensing, Catalysis, and Biology.

Jinliang Lin, Wingkei Ho, Xing Qin, Chi-Fai Leung, Vonika Ka-Man Au, Shun-Cheng Lee,

Nitrogen oxide (NO<sub>x</sub> ) is a family of poisonous and highly reactive gases formed when fuel is burned at high temperatures during anthropogenic behavior. It is a strong oxidizing agent that significantly contributes to the ozone and smog in the atmosphere. Thus, NO<sub>x</sub> removal is important for the ecological environment ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105484]

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DiZyme: Open-Access Expandable Resource for Quantitative Prediction of Nanozyme Catalytic Activity.

Julia Razlivina, Nikita Serov, Olga Shapovalova, Vladimir Vinogradov,

Enzymes suffer from high cost, complex purification, and low stability. Development of low-cost artificial enzymes of comparative or higher effectiveness is desired. Given its complexity, it is desired to presume their activities prior to experiments. While computational approaches demonstrate success in modeling nanozyme activities, they require assumptions about the system ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105673]

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Tunable Assembly of Organic-Inorganic Molecules into Hierarchical Superstructures as Ligase Mimics for Enhancing Tumor Photothermal Therapy.

Yongjian Ai, Hua Sun, Chenlong Wang, Wenchen Zheng, Qiang Han, Qionglin Liang,

The assembly of molecules into hierarchical superstructures is ubiquitous in the construction of novel geometrically complex hierarchical superstructures, attracting great attention. Herein, a metal-ligand cross-linking strategy is developed for the fabrication of ferric ion-dopamine coordination hierarchical superstructures. A range of superstructures with highly complex morphologies, such as flower-like, octopus-like, and ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105304]

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Construction of Laterally Asymmetric Heterojunctions with Sub-Micrometer Resolution by Hierarchical Self-Assembly of Polythiophene Nanofibers.

Hongxian Zheng, Wenbin Li, Yurong Chen, Baichuan Jiang, Yu Che, Cailing Ou, Jun Li, Xiao Han, Chuanhui Liu, Lei Zhang,

Polymeric semiconductors are crucial candidates for the construction of next-generation flexible and printable electronic devices. By virtue of the successful preparation of monodispersed colloidal solution in orthogonal solvent, poly(3-hexylthiophene) (P3HT) nanofibers are developed into versatile building blocks for nanoelectronics and their compatibilities are verified with photolithographic lift-off technology. Then, the ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2105306]

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Metal Centers and Organic Ligands Determine Electrochemistry of Metal-Organic Frameworks.

Caoling Li, Jian Shen, Kangbing Wu, Nianjun Yang,

The properties and applications of metal-organic frameworks (MOFs) can be tuned by their metal centers and organic ligands. To reveal experimentally and theoretically the influence of metal centers and ligands on electrochemical performance of MOFs, three MOFs with copper or zinc centers and organic ligands of 2-methylimidazole (2MI) or 1,3,5-benzenetricarboxylic ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106607]

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Micro-Nano Motors with Taxis Behavior: Principles, Designs, and Biomedical Applications.

Chao Gao, Ye Feng, Daniela A Wilson, Yingfeng Tu, Fei Peng,

As a novel mobile nanodevice, micro-nano motors (MNMs) can convert the energy of the surrounding environment into mechanical motion. With this unique ability, they promise revolutionary potential in bio-applications including precise drug delivery, bio-sensing, and noninvasive surgery. Yet for practically reaching the target and fulfilling these tasks in dynamically changing ... Read more >>

Small (Small (Weinheim an der Bergstrasse, Germany))
[2022, :e2106263]

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