3D ‐Continuous Nanoporous Covalent Framework Membrane Nanoreactors with Quantitatively Loaded Ultrafine Pd Nanocatalysts
Polymeric membranes featuring three-dimensionally continuous nanoporous structures of a covalent molecular network are quantitatively loaded with ultrafine Pd nanocatalysts, establishing a robust and versatile supported catalyst platform for applications in both batch reactions and continuous flow processes. AbstractThe confinement effect of catalytic nanoreactors containing metal catalysts within nanometer-sized volumes has attracted significant attention for their potential to enhance reaction rate and selectivity. Nevertheless, unregulated catalyst loading, aggregation, leaching, and limited reusability remain obstacles...
Source: Small - April 24, 2024 Category: Nanotechnology Authors: Dawoon Jeong,
Wangsuk Oh,
Ji ‐Woong Park Tags: Research Article Source Type: research
Spatially Confined π‐Complexation within Pore‐Space‐Partitioned Metal–Organic Frameworks for Enhanced Light Hydrocarbon Separation and Purification
The confined space constructed by introducingC3-symmetric [Cu(pyz)3] fragments into hexagonal channels of MIL-88 prototype frameworks coupled with π-complexation of Cu+ enable MOF adsorbents with top-level separation ability for C2H2/CH4 and C2H4/CH4 mixtures. AbstractUltramicroporous metal –organic frameworks (MOFs) are demonstrated to be advantageous for the separation and purification of light hydrocarbons such as C2H2, C2H4, and CH4. The introduction of transition metal sites with strong π-complexation affinity into MOFs is more effective than other adsorption sites for the selective adsorption of π-electron-rich ...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Ying ‐Ying Xue,
Jiao Lei,
Hong‐Juan Lv,
Pan Liang,
Lianqing Li,
Quan‐Guo Zhai Tags: Research Article Source Type: research
Ethylene Glycol ‐Choline Chloride Based Hydrated Deep Eutectic Electrolytes Enabled High‐Performance Zinc‐Ion Battery
Ethylene glycol-choline chloride (Eg-ChCl) based hydrated deep-eutectic electrolytes (HDEEs) are proposed for RZIBs. The formulated HDEEs, particularly 1-0.5-4-2 HDEE, exhibit the lowest viscosity, highest Zn2+ conductivity, and the highest Zn2+ transference number. Additionally, 1-0.5-4-2 HDEE provides a wide electrochemical stability window, enables dendrite-free zinc stripping/plating cycling, and enhanced zinc-ion storage performance. AbstractAqueous rechargeable zinc-ion batteries (ARZIBs) are considered as an emerging energy storage technology owing to their low cost, inherent safety, and reasonable energy density. H...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Rangaswamy Puttaswamy,
Hyocheol Lee,
Hyo ‐Won Bae,
Do youb Kim,
Dukjoon Kim Tags: Research Article Source Type: research
Aluminium, Nitrogen ‐Dual‐Doped Reduced Graphene Oxide Co‐Existing with Cobalt‐Encapsulated Graphitic Carbon Nanotube as an Activity Modulated Electrocatalyst for Oxygen Electrocatalyst for Oxygen Electrochemistry Applications
This manuscript reports the development of a new bifunctional catalyst that exhibits high activity and stability under practical operating conditions. The catalyst (Al, Co/N-rGCNT) is made up of aluminium, nitrogen-dual-doped reduced graphene oxide sheets co-existing with the in situ formed cobalt-encapsulated CNT units is synthesized by a scalable pyrolysis method in an inert Ar atmosphere. The developed electrocatalyst achieved enhanced the oxygen reduction reaction (ORR) and the oxygen evolution reaction OER activity as a result of the favorable synergistic modulations and the system can serve as a process-friendly air-...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Geeta Pandurang Kharabe,
Sidharth Barik,
Sudheesh Kumar Veeranmaril,
Aathira Nair,
Rajith Illathvalappil,
Athira Yoyakki,
Kavita Joshi,
Chathakudath Prabhakaran Vinod,
Sreekumar Kurungot Tags: Research Article Source Type: research
Simultaneous Interface Engineering and Phase Tuning of CeO2 ‐Decorated Catalysts for Boosted Oxygen Evolution Reaction
Simultaneous interfacial engineering and phase modulation of nitride and metal phases are achieved through the decoration of CeO2 for enhanced oxygen evolution reaction. AbstractHeterogeneous catalysts have attracted extensive attention among various emerging catalysts for their exceptional oxygen evolution reaction (OER) capabilities, outperforming their single-component counterparts. Nonetheless, the synthesis of heterogeneous materials with predictable, precise, and facile control remains a formidable challenge. Herein, a novel strategy involving the decoration of catalysts with CeO2 is introduced to concurrently engine...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Qingyi Liu,
Xijiao Mu,
Fuyun Kang,
Shiyu Xie,
Chun ‐Hua Yan,
Yu Tang Tags: Research Article Source Type: research
A 3,3 ′‐Difluoro‐2,2′‐Bithiophene Based Donor Polymer Realizing High Efficiency ( > 17%) Single Junction Binary Organic Solar Cells
In this study, two novel donor –acceptor (D–A) copolymers are designed and synthesized,DTBT-2T andDTBT-2T2F with 2,2 ′-bithiophene or 3,3′-difluoro-2,2′-bithiophene as the donor unit and dithienobenzothiadiazole as the acceptor unit, and used them as donor materials in non-fullerene organic solar cells (OSCs). Due to enhanced planarity of polymer chains resulted by the intramolecular F···S noncovalent int eractions, the incorporation of 3,3′-difluoro-2,2′-bithiophene unit instead of 2,2′-bithiophene into the polymers can enhance their molecular packing, crystallinity and hole mobility. TheDTBT-2T:L8-BO b...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Zhiyi Su,
Wenlong Liu,
Yi Lin,
Zaifei Ma,
Andong Zhang,
Hao Lu,
Xinjun Xu,
Cuihong Li,
Yahui Liu,
Zhishan Bo Tags: Research Article Source Type: research
Room ‐Temperature Synthesis of Covalent Organic Frameworks using Gamma‐Irradiation in Open‐Air Conditions
The advancement of new forms of energy sources has been the focus of research to develop more green and high-throughput synthetic techniques. In this work, gamma irradiation is used as a promising approach under an open-air condition at room temperature within a short time for the synthesis of high crystalline COFs. AbstractCovalent organic frameworks (COFs), which have layered stacking structures, extended π-conjugation, and periodic frameworks have become a promising class of materials for a wide range of applications. However, their synthetic pathways frequently need high temperatures, enclosed systems under high press...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Ahmed M. Elewa,
Islam M. A. Mekhemer,
Ahmed F. M. EL ‐Mahdy,
Amr Sabbah,
Shih‐Yuan Chen,
Li‐Yu Ting,
Shimaa Abdelnaser,
Ho‐Hsiu Chou Tags: Research Article Source Type: research
Custom ‐Design of Multi‐Stimuli‐Responsive Degradable Silica Nanoparticles for Advanced Cancer‐Specific Chemotherapy
The fundamental design principles governing the use of degradable silica nanoparticles, particularly their responsiveness to endogenous/exogenous stimuli, are meticulously outlined in this review, which delves into the use of these nanoparticles for the integration of chemotherapy and diverse treatment modalities. Additionally, this review highlights potential challenges that may impede future research progress and the translation of these innovative approaches into clinical applications. AbstractChemotherapy is crucial in oncology for combating malignant tumors but often encounters obatacles such as severe adverse effects...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Junjie Zhang,
Jiani Zhou,
Longguang Tang,
Jiayi Ma,
Ying Wang,
Hui Yang,
Xiaoxiao Wang,
Wenpei Fan Tags: Review Source Type: research
Uncovering the Recent Progress of CNC ‐Derived Chirality Nanomaterials: Structure and Functions
Here, an overview of recent advances in CNC-based chirality nanomaterials is presented. Various film structure-controlling strategies are summarized, including assembly processing, physical routes, additive engineering, surface modification, geometric structure regulations, etc. Next, the structure-function correlation of nanomaterials is revealed. Finally, the applications of composites that derive from the unique layer-by-layer structure and optical activity are reviewed. AbstractCellulose nanocrystal (CNC), as a renewable resource, with excellent mechanical performance, low thermal expansion coefficient, and unique opti...
Source: Small - April 23, 2024 Category: Nanotechnology Authors: Shengzhe Jia,
Bingbing Yang,
Jing Du,
Yujiang Xie,
Liuyang Yu,
Yuan Zhang,
Tiantian Tao,
Weiwei Tang,
Junbo Gong Tags: Review Source Type: research
Neural Tracing Protein ‐Functionalized Nanoparticles Capable of Fast Retrograde Axonal Transport in Live Neurons
Chemically conjugating the neural tracing protein WGA-HRP to gold nanoparticle (AuNP) is effective in inducing fast retrograde axonal transport of the nanoparticle in live neurons cultured in microfluidics with microchannels separating the axon side from the cell body side. AbstractNeural tracing proteins like horseradish peroxidase-conjugated wheat germ agglutinin (WGA-HRP) can target the central nervous system (CNS) through anatomic retrograde transport without crossing the blood –brain barrier (BBB). Conjugating WGA-HRP to nanoparticles may enable the creation of BBB-bypassing nanomedicine. Microfluidics and two-photo...
Source: Small - April 22, 2024 Category: Nanotechnology Authors: Wenqian Wang,
Md. Musfizur Hassan,
Natasha Kapoor ‐Kaushik,
Lital Livni,
Benjamin Musrie,
Jianbo Tang,
Zaheri Mahmud,
Saluo Lai,
Peter Richard Wich,
Vaishnavi Ananthanarayanan,
Gila Moalem‐Taylor,
Guangzhao Mao Tags: Research Article Source Type: research
Encasing Few ‐Layer MoS2 within 2D Ordered Cubic Graphitic Cages to Smooth Trapping‐Conversion of Lithium Polysulfides for Dendrite‐Free Lithium–Sulfur Batteries
This work prepares 2D-ordered cubic graphitic cages encased with few-layer, curved MoS2 (MoS2@MGF). Through the synergistic effects of chemical adsorption and physical confinement, MoS2@MGF exhibits abundant sulfur vacancies and excellent conductivity, enabling smooth trapping-conversion of lithium polysulfides and accelerated conversion kinetics, while facilitating uniform deposition of lithium ions. AbstractThe industrialization of lithium –sulfur (Li–S) batteries faces challenges due to the shuttling effect of lithium polysulfides (LiPSs) and the growth of lithium dendrites. To address these issues, a simple and sca...
Source: Small - April 22, 2024 Category: Nanotechnology Authors: Yifan Gao,
Yuwei Deng,
Shenxin Xia,
Xiangyun Xi,
Zhebin Zhang,
Yajun Wang,
Dong Yang,
Tongtao Li,
Angang Dong Tags: Research Article Source Type: research
Biomimetic Multifunctional Graphene ‐Based Coating for Thermal Management, Solar De‐Icing, and Fire Safety: Inspired from the Antireflection Nanostructure of Compound Eyes
Herein, inspired from the compound eyes to enhance the photo-thermal capability of graphene based on the Fresnel equation. An equilibrium temperature of ≈77 °C and rapid de-icing within ≈65 s are achieved. The synergetic flame retardant mechanism results in 58% and 28% decreases in heat release rate and total heat release. AbstractDue to the ubiquitous and inexhaustible solar source, photothermal materials have gained considerable attention for their potential in heating and de-icing. Nevertheless, traditional photothermal materials, exemplified by graphene, frequently encounter challenges emanating from their elevat...
Source: Small - April 22, 2024 Category: Nanotechnology Authors: Tianyang Cui,
Yapeng Zheng,
Mengdi Hu,
Bicheng Lin,
Jingwen Wang,
Wei Cai,
Bin Fei,
Jixin Zhu,
Yuan Hu Tags: Research Article Source Type: research
Heterostructures Assembled from Bi2O2CO3 and MXene for Boosted Potassium ‐Ion Storage by Arousing the Built‐in Electric Field
A heterostructure of polyaniline intercalated Bi2O2CO3/MXene (BOC-PA/MXene) hybrids is designed via simple self-assembly strategy. The ingenious design of heterointerface-rich architecture motivates significantly the interior self-built-in electric field (IEF) and high-density electron flow, thus accelerating the charge transfer and boosting ion diffusion. As a result, the hybrids realize a high reversible specific capacity, satisfying rate capability as well as long-term cycling stability. AbstractBismuth-based materials have been recognized as the appealing anodes for potassium-ion batteries (PIBs) due to their high theo...
Source: Small - April 22, 2024 Category: Nanotechnology Authors: Song Chen,
Heping Ma,
Yibo Du,
Miao Tian,
Zhitao Wang,
Shuang Fan,
Wenming Zhang,
Hui Ying Yang Tags: Research Article Source Type: research
In Situ Loading of Ni3ZnC0.7 Nanoparticles with Carbon Nanotubes to 3D Melamine Sponge Derived Hollow Carbon Skeleton toward Superior Microwave Absorption and Thermal Resistance
Carbon skeleton/carbon nanotubes/Ni3ZnC0.7 composites are successfully prepared by in situ growth of Ni3ZnC0.7 and CNTs on 3D melamine sponge carbon. The composite shows lightweight characteristics and can quickly recover to its original state after being pressed. The bandwidth (RL ≤ -10 dB) for the S60min composite reaches 9.3 GHz and a quite low thermal conductivity of 0.0 9075 W m−1·K can be achieved. AbstractThe simple and low-cost construction of a 3D network structure is an ideal way to prepare high-performance electromagnetic wave (EMW) absorption materials. Herein, a series of carbon skeleton/carbon nanot...
Source: Small - April 22, 2024 Category: Nanotechnology Authors: Ruilin Liu,
YuKun Wang,
Peng Wang,
Hideo Kimura,
Baolei Wang,
Chuanxin Hou,
Xueqin Sun,
Wei Du,
Xiubo Xie Tags: Research Article Source Type: research
Wafer Scale Gallium Nitride Integrated Electrode Toward Robust High Temperature Energy Storage
This study opens the pathway toward wafer-scale GaN single-crystal integrated electrodes with self-powered characteristics that are compatible with various (opto)-electronic devices. (Source: Small)
Source: Small - April 22, 2024 Category: Nanotechnology Authors: Songyang Lv,
Shouzhi Wang,
Jiaoxian Yu,
Ge Tian,
Guodong Wang,
Pengfei An,
Kepeng Song,
Bo Ma,
Yangyang Li,
Xiangang Xu,
Lei Zhang Tags: Research Article Source Type: research
