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Total 3421 results found since Jan 2013.
Controllable Fabrication of Highly Uniform Sub ‐10 nm Nanoparticles from Spontaneous Confined Nanoemulsification
A spontaneous confined nanoemulsification strategy is developed to fabricate sub-10 nm uniform polymeric nanoparticles by template synthesis of sub-10 nm nanoemulsions. This strategy employs a self-confined reaction with highly accumulated surfactants in chemically active droplets to achieve enhanced molecular-level interfacial instability for self-burst nanoemulsification. This strategy allows controllable fabrication of uniform sub-10 nm polymeric nanoparticles in a continuous, scalable, and low-energy manner. AbstractSub-10 nm nanoparticles are known to exhibit extraordinary size-dependent properties for wide appl...
Source: Small - April 19, 2023 Category: Nanotechnology Authors: Chen Chen,
Quan ‐Wei Cai,
Cai‐Zhen Zhan,
Bi‐Cong Wang,
Ping‐Fan Li,
Rui Xie,
Xiao‐Jie Ju,
Zhuang Liu,
Wei Wang,
Liang‐Yin Chu Tags: Research Article Source Type: research
CsPbBr3 Perovskite Nanoparticles causes Colitis ‐Like Symptom via Promoting Intestinal Barrier Damage and Gut Microbiota Dysbiosis
By combining advanced synchrotron radiation with 16S rRNA gene sequencing technique, the biodistribution, biotransformation, gastrointestinal tract toxicity, and impact on the gut microbiota of CsPbBr3 perovskite nanoparticles (CPB PNPs) after oral administration is studied. It is found that CPB PNPs causes more serious colitis-like symptom than Pb(Ac)2 via promoting intestinal barrier damage and gut microbiota dysbiosis. AbstractLead-based perovskite nanoparticles (Pb-PNPs) with superior optoelectronic properties are promising alternatives for the next generation of photovoltaics materials. This raises a great concern abo...
Source: Small - April 18, 2023 Category: Nanotechnology Authors: Linqiang Mei,
Junsong Guo,
Rendong He,
Xuefeng Ding,
Wenyan Yin,
Zhanjun Gu Tags: Research Article Source Type: research
Enhanced Interfacial Charge Transfer/Separation By LSPR ‐Induced Defective Semiconductor Toward High Co2RR Performance
The novel Ag-20@Nb2O5-x heterojunction with local surface plasmon effect and oxygen vacancy is designed, which boosts photocatalytic CO2 reduction with highly selective conversion to CO. AbstractSolar-driven reduction of CO2 emissions into high-value-added carbonaceous compounds has been recognized as a sustainable energy conversion way. The high-efficiency charge separation and effective activation are the critical issues in the process. The local plasma effect of metal and the vacancy of semiconductors in the metal-semiconductor heterostructure can solve this issue extensively. Herein, an oxygen vacancy photocatalyst con...
Source: Small - April 17, 2023 Category: Nanotechnology Authors: Jingwen Jiang,
Xiaofeng Wang,
Hong Guo Tags: Research Article Source Type: research
Custom ‐Made Piezoelectric Solid Solution Material for Cancer Therapy
A PEGylated piezoelectric solid solution 0.7BiFeO3−0.3BaTiO3 nanoparticles (P-BF-BT NPs) is customized for cancer treatments, which can realize synchronous oxygen self-supply and diverse reactive oxygen species production. In vivo and in vitro experiments have demonstrated that the multimodal imaging-guided P-BF-BT NP-mediated synergistic sonodynamic therapy/chemodynamic therapy by the Piezo-Fenton process has excellent antitumor efficacy and biological safety. AbstractPiezoelectric material-mediated sonodynamic therapy (SDT) has received considerable research interest in cancer therapy. However, the simple applications ...
Source: Small - April 17, 2023 Category: Nanotechnology Authors: Shanrong Lv,
Zhili Qiu,
Dehong Yu,
Xiunan Wu,
Xiang Yan,
Yiping Ren,
Yuqi Huang,
Guan Jiang,
Fenglei Gao Tags: Research Article Source Type: research
Enhanced C O Functionality on Carbon Papers Ensures Lowering Nucleation Delay of ALD for Ru towards Unprecedented Alkaline HER Activity
The concept of lowering nucleation delay for Ru atomic layer deposition (ALD) process is achieved by improving the CO functionality on low surface energy substrate of carbon paper. This improved Ru species with negligible ALD nucleation delay on the available carbon paper surface, thus delivering unprecedented hydrogen evolution reaction in alkaline medium having onset potentials of 4.7 mV versus reversable hydrogen electrode (RHE), Tafel slopes of 20 mV dec−1, and turnover frequency of 1.92 H2 s−1 at 30 mV versus RHE. AbstractThe success in lowering the nucleation delay for Atomic Layer Deposition (ALD) of R...
Source: Small - April 17, 2023 Category: Nanotechnology Authors: Sitaramanjaneya M. Thalluri,
Jhonatan Rodriguez ‐Pereira,
Raul Zazpe,
Bilal Bawab,
Eva Kolíbalová,
Ludek Jelinek,
Jan M. Macak Tags: Research Article Source Type: research
Micellar Nanoreactors Enabled Site ‐Selective Decoration of Pt Nanoparticles Functionalized Mesoporous SiO2/WO3‐x Composites for Improved CO Sensing
Site-selective decoration of Pt nanoparticles with FeOx in the mesoporous SiO2/WO3-x materials is achieved by utilizing the confinement effect of micellar nanoreactors and the strong metal-support interaction between FeOx and metallic Pt. The ultra-thin FeOx layer partially decorated on Pt nanoparticles actives the oxidation of CO on the sensing layer and the mesoporous SiO2/WO3-x-FeOx/Pt composites show excellent CO sensing performance. AbstractSite-selective and partial decoration of supported metal nanoparticles (NPs) with transition metal oxides (e.g., FeOx) can remarkably improve its catalytic performance and maintain...
Source: Small - April 17, 2023 Category: Nanotechnology Authors: Junhao Ma,
Wenhe Xie,
Jichun Li,
Haitao Yang,
Limin Wu,
Yidong Zou,
Yonghui Deng Tags: Research Article Source Type: research
Ratiometric Nanothermometer Based on a Radical Excimer for In Vivo Sensing
Ratiometric nanothermometer based on a radical excimer for in vivo sensing with excellent temperature sensitivity, reversibility and high colloidal stability. AbstractRatiometric fluorescent nanothermometers with near-infrared emission play an important role in in vivo sensing since they can be used as intracellular thermal sensing probes with high spatial resolution and high sensitivity, to investigate cellular functions of interest in diagnosis and therapy, where current approaches are not effective. Herein, the temperature-dependent fluorescence of organic nanoparticles is designed, synthesized, and studied based on the...
Source: Small - April 15, 2023 Category: Nanotechnology Authors: Davide Blasi,
Nerea Gonzalez ‐Pato,
Xavier Rodriguez Rodriguez,
Iñigo Diez‐Zabala,
Sumithra Yasaswini Srinivasan,
Núria Camarero,
Oriol Esquivias,
Mònica Roldán,
Judith Guasch,
Anna Laromaine,
Pau Gorostiza,
Jaume Veciana,
Imma Ratera Tags: Research Article Source Type: research
Titanium Nitride Nanorods Array ‐Decorated Graphite Felt as Highly Efficient Negative Electrode for Iron–Chromium Redox Flow Battery
TiN nanorods array 3D graphite felt composite electrode is prepared as the negative electrode of iron-chromium redox flow battery. This composite electrode is made by the in situ growth method without the use of any binder. The stability and homogeneity of the electrode are improved and the electrocatalytic activity is significantly enhanced. AbstractIron-chromium redox flow batteries have attracted widespread attention because of their low cost. However, the performance of these batteries is still lower than that of vanadium redox flow batteries due to the poor electrochemical activity of Cr3+/Cr2+ redox couples on graphi...
Source: Small - April 15, 2023 Category: Nanotechnology Authors: Yiyang Liu,
Jiao Xu,
Shanfu Lu,
Yan Xiang Tags: Research Article Source Type: research
Digital Detection of Single Virus Particles by Multi ‐Spot, Label‐Free Imaging Biosensor on Anti‐Reflective Glass
Individual virion particles of SARS-CoV-2 variants are optically detected as they bind to specific antibodies and aptamers immobilized on a glass substrate with anti-reflective coating. Interferometric amplification enables combining single nanoparticle sensitivity with a wide field-of-view, which in turn allows parallel observation of multiple spots. This combination of features underpins the digital microarray biosensor presented here. AbstractRapid detection of whole virus particles in biological or environmental samples represents an unmet need for the containment of infectious diseases. Here, an optical device enablin...
Source: Small - April 15, 2023 Category: Nanotechnology Authors: Giovanni Nava,
Luca Casiraghi,
Thomas Carzaniga,
Giuliano Zanchetta,
Marcella Chiari,
Francesco Damin,
Valentina Bollati,
Lucia Signorini,
Serena Delbue,
Tommaso Bellini,
Marco Buscaglia Tags: Research Article Source Type: research
Scalable Fabrication of Superhydrophobic Coating with Rough Coral Reef ‐Like Structures for Efficient Self‐Cleaning and Oil‐Water Separation: An Experimental and Molecular Dynamics Simulation Study
The ultra-low-cost, extremely simple and scalable preparation of superhydrophobic coatings is achieved by precisely adjusting the percentage of coating varnish, which opened up a channel from laboratory preparation to industrial production. The understanding of the anti-wetting mechanism of prepared composite superhydrophobic coating surfaces is deepened from the perspective of energy and kinetic properties. AbstractSuperhydrophobic coating has a great application prospect in self-cleaning and oil-water separation but remains challenging for large-scale preparation of robust and weather-resistant superhydrophobic coatings ...
Source: Small - April 14, 2023 Category: Nanotechnology Authors: Huidong Cai,
Chongxiong Duan,
Mingli Fu,
Jin Zhang,
Haomin Huang,
Yun Hu,
Jie Shi,
Daiqi Ye Tags: Research Article Source Type: research
Engineering the Surface Chemistry and Morphology of Polymeric Carbon Nitrides Towards Greener Heterogeneous Catalysts for Biodiesel Synthesis
Polymeric carbon nitride dots and nanosheets are prepared through a solid-phase reaction between urea and sodium citrate. These heterogeneous catalysts are used to catalyze the transesterification reaction of canola oil to a biofuel namely biodiesel achieving> 98% conversion over multiple catalytic cycles and using only a 5 wt% catalyst loading. AbstractBiodiesel remains one of the most promising alternatives to replace fossil fuel-derived petrodiesel. Nonetheless, conventional biodiesel synthesis relies on homogeneous alkali-based catalysts that involve long and tedious purification steps , increasing biodiesel product...
Source: Small - April 14, 2023 Category: Nanotechnology Authors: Tayline V. Medeiros,
Alexia Macina,
Hudson A. Bicalho,
Rafik Naccache Tags: Research Article Source Type: research
Diatom Frustules Decorated with Co Nanoparticles for the Advanced Anode of Li ‐Ion Batteries
This study provides a new method for the synthesis of metal/silica composites and an opportunity for the development of natural resources as advanced active materials for LIBs.
Source: Small - April 14, 2023 Category: Nanotechnology Authors: Yu ‐xin Chen,
Hong‐chang Liu,
Wei‐qi Xie,
Ze Shen,
Jin‐lan Xia,
Zhen‐yuan Nie,
Jian‐ping Xie Tags: Research Article Source Type: research
Nanotechnology Approaches for Prevention and Treatment of Chemotherapy ‐Induced Neurotoxicity, Neuropathy, and Cardiomyopathy in Breast and Ovarian Cancer Survivors
Advancements in nanomedicine have led to great potential for improving the fundamental flaws in chemotherapeutics for breast and ovarian cancer treatment. Many women who survive these impactful diseases have reduced quality of life due to off-target effects from chemotherapy. Nanomaterials have further been applied to advance potential treatments for these debilitating effects induced by chemotherapy including cardiomyopathy, neuropathy, and neurotoxicity. AbstractNanotechnology has emerged as a promising approach for the targeted delivery of therapeutic agents while improving their efficacy and safety. As a result, nanoma...
Source: Small - April 14, 2023 Category: Nanotechnology Authors: Sarah Nevins,
Callan D. McLoughlin,
Alfredo Oliveros,
Joshua B. Stein,
Mohammad Abdur Rashid,
Yannan Hou,
Mi ‐Hyeon Jang,
Ki‐Bum Lee Tags: Review Source Type: research
Inhaled Lipid Nanoparticles Alleviate Established Pulmonary Fibrosis
Inhalable liposomes encapsulating metformin and nintedanib, which exhibit significantly prolonged retention in the lung, are developed for bleomycin-induced pulmonary fibrosis with enhanced myofibroblast deactivation and apoptosis, inhibited TGF β1 section, and suppressed collagen formation. AbstractPulmonary fibrosis, a sequela of lung injury resulting from severe infection such as severe acute respiratory syndrome-like coronavirus (SARS-CoV-2) infection, is a kind of life-threatening lung disease with limited therapeutic options. Herein, inhalable liposomes encapsulating metformin, a first-line antidiabetic drug that ha...
Source: Small - April 14, 2023 Category: Nanotechnology Authors: Dongjun Li,
Ang Zhao,
Jiafei Zhu,
Chunjie Wang,
Jingjing Shen,
Zixuan Zheng,
Feng Pan,
Zhuang Liu,
Qian Chen,
Yang Yang Tags: Research Article Source Type: research
Low Forces Push the Maturation of Neural Precursors into Neurons
By loading neural stem cells (NSCs) with magnetic nanoparticles (MNPs), a precise force vector can be remotely generated through static magnetic fields (M). This force stimulates neural maturation, halving the time required for the maturation of neural precursors into neurons. This force can also guide the outgrowth of NSCs transplanted into the spinal cord tissue. AbstractMechanical stimulation modulates neural development and neuronal activity. In a previous study, magnetic “nano-pulling” is proposed as a tool to generate active forces. By loading neural cells with magnetic nanoparticles (MNPs), a precise force vecto...
Source: Small - April 14, 2023 Category: Nanotechnology Authors: Sara De Vincentiis,
Matteo Baggiani,
Francesca Merighi,
Valentina Cappello,
Jakub Lopane,
Mariachiara Di Caprio,
Mario Costa,
Marco Mainardi,
Marco Onorati,
Vittoria Raffa Tags: Research Article Source Type: research
