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Total 3421 results found since Jan 2013.
Metal –Organic Framework–Derived Mesoporous B‐Doped CoO/Co@N‐Doped Carbon Hybrid 3D Heterostructured Interfaces with Modulated Cobalt Oxidation States for Alkaline Water Splitting
Freestanding metal –organic frameworks–derived B-doped CoO/Co@NC 3D mesoporous heterostructures on Ni foam with tunable cobalt oxidation states developed under argon/hydrogen annealing gas atmospheres enable optimal hydrogen and oxygen evolution reactions in alkaline media. AbstractHeteroatom-doped transition metal-oxides of high oxygen evolution reaction (OER) activities interfaced with metals of low hydrogen adsorption energy barrier for efficient hydrogen evolution reaction (HER) when uniformly embedded in a conductive nitrogen-doped carbon (NC) matrix, can mitigate the low-conductivity and high-agglomeration of met...
Source: Small - May 11, 2023 Category: Nanotechnology Authors: Dun Chan Cha,
Thangjam Ibomcha Singh,
Ashakiran Maibam,
Tae Hyeong Kim,
Dong Hwan Nam,
Ravichandar Babarao,
Seunghyun Lee Tags: Research Article Source Type: research
Butyrate Modification Promotes Intestinal Absorption and Hepatic Cancer Cells Targeting of Ferroptosis Inducer Loaded Nanoparticle for Enhanced Hepatocellular Carcinoma Therapy
Butyrate-modified nanoparticles for oral administration that can bind to MCT-1 and efficiently penetrate intestine to deliver medicines for liver cancers is constructed. Specifically, ferroptosis inducers sorafenib and salinomycin are separately encapsulated. This results revealed that sorafenib depletes GPX4 and GSH, consequently triggering ferroptosis; salinomycin enhances intracellular iron and lipid peroxidation, accelerating ferroptosis and resulting in the effective elimination of tumors. AbstractSorafenib is an oral-administered first-line drug for hepatocellular carcinoma (HCC) treatment. However, the therapeutic e...
Source: Small - May 11, 2023 Category: Nanotechnology Authors: Yinglan Yu,
Xinran Shen,
Xin Xiao,
Lian Li,
Yuan Huang Tags: Research Article Source Type: research
Ultrafast Photocatalytic Detoxification of Mustard Gas Simulants by a Mesoporous Metal –Organic Framework with Dangling Porphyrin Molecules
A mesoporous MOF functionalized with porphyrin molecules, named TCPP@MIL-101(Cr), is successfully fabricated, which exhibits superior photocatalytic performance compared to a homogeneous porphyrin catalyst in detoxification of mustard gas simulants. Its detoxification rate is the highest among the reported materials, and the catalytic efficiency can be further improved by loading gold nanoparticles onto the MOF composite (t1/2 = 45 s). AbstractDeveloping effective catalysts to degrade chemical warfare agents is of great significance. Herein, a mesoporous MIL-101(Cr) composite material dangled with porphyrin molecules...
Source: Small - May 10, 2023 Category: Nanotechnology Authors: Ming ‐Min Wu,
Juan Su,
Dong Luo,
Bing‐Chen Cai,
Ze‐Lin Zheng,
De‐Shan Bin,
Yan Yan Li,
Xiao‐Ping Zhou Tags: Research Article Source Type: research
ISCOMs/MPLA ‐Adjuvanted SDAD Protein Nanoparticles Induce Improved Mucosal Immune Responses and Cross‐Protection in Mice
In this study, novel protein nanoparticles are generated by conjugating the influenza M2e-NA fusion protein onto influenza nucleoprotein nanoparticle cores using a hetero-bifunctional crosslinker SDAD (NHS-SS-Diazirine). The resulting protein nanoparticles, when formulated with ISCOMs/monophosphoryl lipid A adjuvants, exhibit significantly improved immune responses in both systemic and local mucosal compartments. These outcomes position this formulation as a promising mucosal vaccine candidate. AbstractThe epidemics caused by the influenza virus are a serious threat to public health and the economy. Adding appropriate a...
Source: Small - May 10, 2023 Category: Nanotechnology Authors: Wandi Zhu,
Jaeyoung Park,
Thomas Pho,
Lai Wei,
Chunhong Dong,
Joo Kim,
Yao Ma,
Julie A. Champion,
Bao ‐Zhong Wang Tags: Research Article Source Type: research
Time ‐Resolved Electrochemical Impedance Spectroscopy of Stochastic Nanoparticle Collision: Short Time Fourier Transform versus Continuous Wavelet Transform
Short-time Fourier transform (STFT) and continuous wavelet transform (CWT) electrochemical impedance spectroscopy (EIS) obtained from chronoamperometric curves are employed to analyze stochastic nanoparticle (NP) collisions. Both methods provide time-resolved information on the electrode process of single nanoparticle. With better time and frequency resolution, CWT is shown to be more appropriate for time-resolved application. AbstractThis work demonstrates the utilization of short-time Fourier transform (STFT), and continuous wavelet transform (CWT) electrochemical impedance spectroscopy (EIS) for time-resolved analysis o...
Source: Small - May 10, 2023 Category: Nanotechnology Authors: Long Duong Ha,
Ki Jun Kim,
Seong Jung Kwon,
Byoung ‐Yong Chang,
Seongpil Hwang Tags: Research Article Source Type: research
Design of Size ‐Controlled Sulfur Nanoparticle Cathodes for Lithium‐Sulfur Aviation Batteries
Dimethylformamide (DMF) is used to develop a remarkably homogeneous cathode, and pouch cells prepared with the cathode exhibit an energy density surpassing 300 Wh kg−1 and a discharge rate exceeding 0.3C. Two 2.5 g pouch cells, when packed, could provide the necessary power for a drone (12 g) to achieve sustained, high-altitude flight for over 3 min. AbstractLithium –sulfur (Li–S) battery has been considered as a strong contender for commercial aerospace battery, but the commercialization requires Ah-level pouch cells with both efficient discharge at high rates and ultra-high energy density. In this paper, the applic...
Source: Small - May 10, 2023 Category: Nanotechnology Authors: Jianpeng Liu,
Chang Cheng,
Tianle Wang,
Juncheng Zhu,
Zhong Li,
Guang Ao,
Wenliang Zhu,
Giuseppe Pezzotti,
Jiliang Zhu Tags: Research Article Source Type: research
Ultrasensitive Terahertz Biodetection Enabled by Quasi ‐BIC‐Based Metasensors
An advanced on-chip ultra-sensitive THz plasmonic metasensor driven by the magnetic dipole quasi-BIC resonance is reported based on split-ring resonator combining functionalized gold nanoparticles conjugated with the specific antibody, which is essential for specific differentiation of highly diluted ( ≈ pM) solutions.The result offers a novel non-destructive and rapid trace measured approach for next-generation biomedical quantitative detection systems. AbstractAdvanced sensing devices, highly sensitive, and reliable in detecting ultralow concentrations of circulating biomarkers, are extremely desirable and hold great p...
Source: Small - May 10, 2023 Category: Nanotechnology Authors: Ride Wang,
Lei Xu,
Lujun Huang,
Xiaobao Zhang,
Hao Ruan,
Xiao Yang,
Jing Lou,
Chao Chang,
Xiaohui Du Tags: Research Article Source Type: research
Ti3C2TX MXene Ink Direct Writing Flexible Sensors for Disposable Paper Toys
Ti3C2TX MXene sediment is chosen to formulate viscos inks without involving any additives and refilled in a commercial ball pen for the fabrication of disposable paper electronics. In view of the interweaving nanosheets, nanoflakes, and nanoparticles, they exhibit excellent mechanical sensing performance. As a proof-of-concept application, the paper sensor based on MXene ink implements several popular children's games. AbstractFlexible electronics have gained great attention in recent years owing to their promising applications in biomedicine, sustainable energy, human-machine interaction, and toys for children. Paper main...
Source: Small - May 10, 2023 Category: Nanotechnology Authors: Yangyang Pei,
Jianing An,
Ke Wang,
Zengyu Hui,
Xiaoli Zhang,
Hongqing Pan,
Jinyuan Zhou,
Gengzhi Sun Tags: Research Article Source Type: research
Hierarchical Synergistic Structure for High Resolution Strain Sensor with Wide Working Range
The hierarchical synergistic structure is designed and fabricated through the combination of Au micro cracks and carbon black (CB) nanoparticles. The HSS based strain sensor exhibit high sensitivity, high strain resolution even under large loading strain, broad detection range, outstanding stability, and fast response speed simultaneously, which is successfully applied to monitoring tiny signals of the carotid pulse during body movement. AbstractStrain sensors have been attracting tremendous attention for the promising application of wearable devices in recent years. However, the trade-off between high resolution, high sen...
Source: Small - May 9, 2023 Category: Nanotechnology Authors: Runhui Zhou,
Yufei Zhang,
Fan Xu,
Zhuoyu Song,
Jiaoya Huang,
Zemin Li,
Chen Gao,
Jiang He,
Wenchao Gao,
Caofeng Pan Tags: Research Article Source Type: research
η‐Carbides (Co, Mo, or W) Nanoparticles from Octacyanometalates Precursors‐Based Network
Bimetallic carbide nanoparticles MxM'yC can be obtained in two-step chemical pathway. This process consists by the synthesis of a precursor, a network of octacyanometallates, and its thermal degradation under a neutral atmosphere. This process results in the formation of carbide nanoparticles with a diameter of ≈ 5 nm, and the stoichiometries Co3M ’3C, Co6M ’6C, and Co2M ’4C for the CsCoM ’ systems. AbstractThis paper describes a simple, two-steps chemical pathway to obtain bimetallic carbide nanoparticles (NPs) of general formula MxM ″yC, also calledη-carbides. This process allows for a control of the c...
Source: Small - May 8, 2023 Category: Nanotechnology Authors: Thomas Blin,
Armelle Girard,
Fr édéric Fossard,
Nathalie Guillou,
Laure Catala,
Annick Loiseau,
Vincent Huc Tags: Research Article Source Type: research
Near ‐Infrared Light‐Mediated Cyclodextrin Metal–Organic Frameworks for Synergistic Antibacterial and Anti‐Biofilm Therapies
A controllable antibacterial Ag@MOF@PDA is constructed by functionalizing cyclodextrin metal –organic frameworks with polydopamine (PDA) and ultrafine Ag NPs. The PDA coating enables its long-term bactericidal capability by gradual releasing of Ag+, and NIR-mediated hyperthermia can accelerate its release rate, which realizes a synergistic chemical-photothermal capacity to combat bacteria and biofilm infections, representing a potential antibiotic-free alternative in the “post-antibiotic era.” AbstractBacterial infections pose a significant threat to global public health; therefore, the development of novel therapeut...
Source: Small - May 8, 2023 Category: Nanotechnology Authors: Yaping He,
Xuanzong Wang,
Chi Zhang,
Junkui Sun,
Jianzhong Xu,
Daifeng Li Tags: Research Article Source Type: research
Precision Therapy of Recurrent Breast Cancer through Targeting Different Malignant Tumor Cells with a HER2/CD44‐Targeted Hydrogel Nanobot
Schematic illustration of the preparation of a HER2/CD44-targeted hydrogel nanobot (ALPR) by embedding the positively charged bio-responsive, liposome-encapsulated nanoparticles (LPR) formed by cationic liposome DOTAP/DOPE, survivin siRNA, andD-(KLAKLAK)2GGR16 (KLA-R16) into negatively charged Herceptin/hyaluronic acid cross-linked nanohydrogels (Herceptin-HA). AbstractHeterogeneity and drug resistance of tumor cells are the leading causes of incurability and poor survival for patients with recurrent breast cancer. In order to accurately deliver the biological anticancer drugs to different subtypes of malignant tumor cells...
Source: Small - May 8, 2023 Category: Nanotechnology Authors: Juan Chen,
Jinjin Li,
Xiaolu Sun,
Huixia Lu,
Kuai Liu,
Zhenbo Li,
Jianyue Guan,
Huiling Song,
Wei Wei,
Yanhong Ge,
Qiong Fan,
Wei Bao,
Buyong Ma,
Zixiu Du Tags: Research Article Source Type: research
Electronic Structure Engineered Heteroatom Doped All Transition Metal Sulfide Carbon Confined Heterostructure for Extrinsic Pseudocapacitor
The metal-organic framework (MOF)-derivedα-/γ–MnS@CoxSy@N, SC heterostructured electrode is synthesized employing co-precipitation, pyrolysis, sulfurization, and hydrothermal methods. A quasi-solid-state flexible extrinsic pseudocapacitor (QFEPs) device is fabricated usingα-/γ–MnS@CoxSy@N, SC positive and MWCNTs/Ti3C2TX negative electrodes. QEEPs show an excellent volumetric capacitance of 5.95 F cm−3 and an energy density of 64.8 Wh kg−1. AbstractUltra-high energy density battery-type materials are promising candidates for supercapacitors (SCs); however, slow ion kinetics and significant volume expansion...
Source: Small - May 8, 2023 Category: Nanotechnology Authors: Amar M. Patil,
Sunil Moon,
Sanjib Baran Roy,
Jisang Ha,
Nilesh R. Chodankar,
Deepak P Dubal,
Arti A. Jadhav,
Guoqing Guan,
Keonwook Kang,
Seong Chan Jun Tags: Research Article Source Type: research
The Application of Nanoparticle ‐Based Imaging and Phototherapy for Female Reproductive Organs Diseases
This article reviews common disorders of the female reproductive organs and provides an overview of the application of nanoparticle imaging and phototherapy in these disorders. This may be the first comprehensive review of imaging and phototherapy for female genital diseases that nanomedicine may cover from a physiological and anatomical perspective and discusses the difficulties it faces. AbstractVarious female reproductive disorders affect millions of women worldwide and bring many troubles to women's daily life. Let alone, gynecological cancer (such as ovarian cancer and cervical cancer) is a severe threat to most women...
Source: Small - May 8, 2023 Category: Nanotechnology Authors: Lihua Luo,
Huanli Zhou,
Sijie Wang,
Mei Pang,
Junlei Zhang,
Yilong Hu,
Jian You Tags: Review Source Type: research
Ultrathin Co ‐N‐C Layer Modified Pt–Co Intermetallic Nanoparticles Leading to a High‐Performance Electrocatalyst toward Oxygen Reduction and Methanol Oxidation
This study may provide a promising strategy to improve the electrocatalytic performance of Pt-based catalysts.
Source: Small - May 5, 2023 Category: Nanotechnology Authors: Jiaxiang Chen,
Jiangbo Dong,
Junlang Huo,
Chaozhong Li,
Li Du,
Zhiming Cui,
Shijun Liao Tags: Research Article Source Type: research
