CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Huaiyu Li,Jia Luo,Danyang Han,An Liu,Miao Zhou,Junlin Huang,Yucan Zhu,Zhaohui Hou,Hong Yin
Zinc sulfide (ZnS) anode has gripped much focus in face of the various candidates for sodium-ion batteries (SIBs) because of its high capacity, abundant resource as well as environmental friendliness. Nevertheless, the structural collapse of ZnS and the dissolution of polysulfides will irreversibly lead to inferior Na-storage properties. Herein, layer-by-layer hetero-carbon modifying ZnS nanocubes anode (ZnS@NDC) composite has been rationally designed and prepared using pre-carbonized ZIF-8 as a matrix framework, C 3 N 4 and polypyrrole as the coated carbon sources. The initial carbon layer derived from C 3 N 4 can change the surface properties of ZnS nanocubes improving the electronic affinities and provide sufficient buffer matrix successfully inhibiting the agglomeration of ZnS nanocubes. The second carbon layer derived from polypyrrole can improve the ionic diffusion and electronic conductivity owing to the high conductivity and strong charge storage capacity of polypyrrole, as well as further accommodate volume expansion of the ZnS nanocubes. Synergistic effects of layer-by-layer hetero-carbon modifying can also refrain from dissolution of polysulfides improving the structural stability and electrochemical kinetics. When denoted as the anode for SIBs, ZnS@NDC electrode displays admirable long-term life stability and rate capability with capacities of 518.6 mA h g −1 at 1.5 A g −1 after 1000 cycles and 192.4 mA h g −1 at 10 A g −1 , respectively. The idea of synthetic ZnS@NDC material supply experimental basis for the farther development of Na-storage devices and provide an innovative way for the synthesis of other metal compounds based on layer-by-layer construction.
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高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Shengliang Wang,Haixu Chen,Zhijun Xu,Xiaoliang Wang,Zhengyu Tao,Lei Wang,Xiaoman Liu,Xin Huang
Cell surface engineering is an effective strategy to improve the tolerance of living cells against harsh environments as well as endow cells with various properties and functionalities, which they do not possess inherently. However, the research emphasis on single-cell surface engineering with the emergence of collective functionality is still rare. In this study, we encapsulate a single living cell with TiO2 nanoparticles (Degussa P25, composed of anatase and rutile crystallites) and conductive polymer polypyrrole (PPy). The driving force generated from the nanoparticles TiO2 and PPy could be utilized to manipulate cells that are more than a hundred times their own body size. Different collective behaviors of unicellular organisms can be achieved under various conditions. Especially, the engineered cells could be endowed with a swarming negative phototaxis migration under UV light in the presence of ferrocene methanol (MFc). Given that the collective behaviors of organismic swarms can greatly improve the adaptability and survivability compared to individual ones, we thus anticipate that such a studied technique could open up opportunities for the manipulation of the collective behaviors of unicellular organisms and have great potential in cell therapy as well as biosensors.
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高影响因子
Environmental Science-Nano
·
2023
·Vol. 10
·期 5
·1284-1296
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IF 7.3
Yuxuan Lin,Weihua Qin,Yuwei Lu,Mingye Ren,Pan Gao,Feng Xiao,Shaoxia Yang
Improving the performance of single-atom catalysts (SACs) is still challenging in Fenton-like reactions for degrading refractory organic pollutants. Here, we designed P and N co-doped Fe SACs to regulate the electronic structure of Fe active sites and enhance the reaction kinetics of peroxymonosulfate (PMS) activation. The obtained heteroatom-doped Fe SACs for the first time exhibited an ultra-low activation energy (ca. 3.7 kJ mol−1) and excellent degradation efficiency for bisphenol A (BPA) in a wide pH range (4.3–9.2). The superior reaction kinetics of the Fe SACs were attributed to enriching the electron density of atomic Fe and then forming dual electron-rich/-deficient sites, which accelerated the electron transformation to generate reactive oxygen species (ROS). In this study the heteroatom-doped Fe SACs with rapid reaction kinetics are achieved, and provides an idea to design SACs with superior performance in heterogeneous Fenton-like reactions.
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高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 15
·5208-5216
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IF 6.4
Mufang Li,Qing Shu,Xing Qing,Jianmei Wu,Qing Xiao,Kangyu Jia,Xungai Wang,Dong Wang
A bioinspired organic electrochemical transistor (OECT) with synaptic and sensing functions has shown great potential in wearable neuromorphic electronics and brain-like sensory systems. Despite the extraordinary progress in simulating neuromorphic functions, it is still difficult to design a synaptic OECT with a bionic structure, long-term durability, low energy consumption and biomarker monitoring capability. Here, a fibrous OECT (FOECT) constructed from functional boron nitride (FBN)-mediated polypyrrole (PPy) neurofibers and an ion-gel dielectric is proposed for the first time. Benefiting from the porous and consecutive PPy nanonetwork, the synaptic FOECT shows a large on–off current ratio (1.46 × 104) and high transconductance (24.6 mS). Key synaptic features, such as excitatory/inhibitory postsynaptic current (EPSC/IPSC), paired-pulse facilitation/depression (PPF/PPD), short-term plasticity (STP) and cyclic endurance (4000 cycles) were successfully emulated. A low power consumption of 0.85 pj per spike was attained due to the short energy dissipation pathway of the nanostructured PPy channel. In addition, a high surface area and big transconductance guaranteed the FOECT a linear detection region (coefficient R2 = 0.966) towards 10 pg mL−1–0.2 mg mL−1 of C-reactive protein (CRP) with good reproducibility. Hence, this work details a promising strategy for next-generation smart textiles with energy-efficient neuromorphic computing and high-performance synaptic devices.
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高影响因子
Small Methods
·
2023
·Vol. 7
·期 5
·2300116
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IF 12.4
Tiankuan Li,Zhongqian Hu,Feifei Song,Chenyao Wu,Qizeng Miao,Zhongmin Wang,Wei Feng,Jinhe Guo,Yu Chen
Photothermal immunotherapy, the combination of photothermal hyperthermia and immunotherapy, is a noninvasive and desirable therapeutic strategy to address the deficiency of traditional photothermal ablation for tumor treatment. However, insufficient T-cell activation following photothermal treatment is a bottleneck to achieve satisfactory therapeutic effectiveness. In this work, a multifunctional nanoplatform is rationally designed and engineered on the basis of polypyrrole-based magnetic nanomedicine modified by T-cell activators of anti-CD3 and anti-CD28 monoclonal antibodies, which have achieved robust near infrared laser-triggered photothermal ablation and long-lasting T-cell activation, realizing diagnostic imaging-guided immunosuppressive tumor microenvironment regulation following photothermal hyperthermia by reinvigorating tumor-infiltrating lymphocytes. By virtue of high-efficient immunogenic cell death and dendritic cell maturation combined with T-cell activation, this nanosystem markedly restrains primary and abscopal tumors as well as metastatic tumors with negligible side effects in vivo, exerting the specific function for suppressing tumor recurrence and metastasis by establishing a long-term memory immune response.
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PubMed
高影响因子
CELLULOSE
·
2023
·Vol. 30
·期 8
·5355-5371
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IF 5.7
Yu Zhicai,Zhu Zhenyu,Wang Yushu,Wang Jinfeng,Zhao Yuhang,Zhang Jiale,Qin Yi,Jiang Qing,He Hualing
Wearable triboelectric nanogenerators (TENGs) as self-powered sensors to monitor human motion have acquired enormous research interest owing to their low cost and highly efficient mechanical energy-harvesting property. However, development of cellulose fabric-based TENGs with excellent breathability, durability, and shape adaptivity to minimize user discomfort remains a challenge. Herein, a flexible and stretchable cotton fabric-based single-electrode-mode TENG was developed for mechanical energy harvesting and self-powered sensing to detect human motion behaviors. Breathable cotton/ammonia (95% cotton, 5% spandex) blended composite fabric was employed as flexible electrode in TENG via in situ polymerization of polypyrrole, followed by spattering of silver nanowires. Afterward, the polytetrafluoroethylene layer was coated on the surface as a tribo-negative material. The prepared TENG can maintain a stable output voltage of approximately 0.3 V under a force of 4 N at 2.5 Hz frequency. The resulting TENG also exhibited excellent air permeability of 1329.134 mm/s, moisture permeability of 399.7 g/m 2 ·24 h, and cycle stability (above 4000 cycles) and can act as a wearable and sustainable power source for powering electronic devices. Furthermore, the cotton fabric-based TENG can be attached to the finger, wrist, or elbow as a reusable self-powered strain sensor for motion detection due to its shape adaptivity and durability. This work provides a useful design strategy for fabrication of wearable TENGs for energy harvesting and human motion monitoring. Graphical abstract
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高影响因子
Polymers
·
2023
·Vol. 15
·期 8
·1866
·
IF 5
Huiru Yang,Aiping Wang,Xincong Feng,Hailing Dong,Tao Zhuang,Jing Sui,Shugao Zhao,Chong Sun
To meet the comprehensive demand for flexible microwave absorbing (MA) materials, a novel MA rubber containing homemade Polypyrrole nanotube (PPyNT) is produced based on the natural rubber (NR) and acrylonitrile-butadiene rubber (NBR) blends. To achieve the optimal MA performance in the X band, the PPyNT content and NR/NBR blend ratio are adjusted in detail. The 6 phr PPyNT filled NR/NBR (90/10) composite has the superior MA performance with the minimum reflection loss value of −56.67 dB and the corresponding effective bandwidth of 3.7 GHz at a thickness of 2.9 mm, which has the merits in virtue of achieving strong absorption and wide effective absorption band with low filler content and thickness compared to most reported microwave absorbing rubber materials over the same frequency. This work provides new insight into the development of flexible microwave-absorbing materials.
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PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Tao Xie,Guancheng Xu,Yong Yao,Peiyan Li,Wene Du,Hui Ding,Jiahui Jiang,Li Zhang
Metal-nitrogen doped carbon materials (M/NCs) exhibit considerable potential as electrocatalysts for oxygen reduction reaction (ORR) in novel energy conversion and storage devices. Herein, the Fe–N x doped porous carbon catalysts (FeN x PCs) with three-dimensional (3D) pore structure are synthesized by in situ pyrolyzation of polypyrrole-coated Fe 2 O 3 (Fe 2 O 3 @PPy). Fe 2 O 3 derived from the iron-formate framework (Fe-FF) is partially dissolved to generate Fe 3+ for driving polymerization and served as template to form the 3D structure during polymerization. FeN x PCs exhibit satisfactory long-term durability and superior ORR activity ( E 1/2 = 0.89 V) compared to commercial Pt/C. The Zn-air battery (ZAB) assembled with FeN x PCs reveals excellent battery performance, including a high open circuit voltage of 1.50 V, peak power density of 155.4 mW cm −2 , and cycling stability with 500 cycles. The excellent ORR activity of FeN x PCs could be ascribed to the porous structure , Fe–N x active sites, and high defect level of FeN x PCs. This strategy can modulate 3D porous structure via self-template synthesis, which provides a novel insight for development of high-performance air cathode catalyst.
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高影响因子
Nanoscale
·
2023
·Vol. 15
·期 18
·8424-8431
·
IF 6.7
Bingfang Zou,Shiyun Lou,Jie Duan,Shaomin Zhou,Yongqiang Wang
Magnetic-based microfluidic SERS biosensors hold great potential in various biological analyses due to their integrated advantages including easy manipulation, miniaturization and ultrasensitivity. However, it remains challenging to collect reliable SERS nanoprobe signals for quantitative analysis due to the irregular aggregation of magnetic carriers in a microfluidic chamber. Here, magnetic/plasmonic hybrid nanostirrers embedded with a Raman reporter are developed as capture carriers to improve the reliability of microfluidic SERS biosensors. Experimental results revealed that SERS signals from magnetic hybrid nanostirrers could serve as microenvironment beacons of their irregular aggregation, and a signal filtering method was proposed through exploring the relationship between the intensity range of beacons and the signal reproducibility of SERS nanoprobes using interleukin 6 as a model target analyte. Using the signal filtering method, reliable SERS nanoprobe signals with high reproducibility could be picked out from similar microenvironments according to their beacon intensity, and then the influence of irregular aggregation of magnetic carriers on the SERS nanoprobe could be eliminated. The filtered SERS nanoprobe signals also exhibited excellent repeatability from independent tests, which lay a solid foundation for a reliable working curve and subsequent accurate bioassay. This study provides a simple but promising route for reliable microfluidic SERS biosensors, which will further promote their practical application in biological analysis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jianan Wang,Xin Chen,Zhenyu Wang,Changzheng Lin,Shiyi Sun,Jianwei Liu,Yunpeng Liu,Qianyue Ma,Ling Wang,Kai Yang,Jiangtao Feng,Xi Wang,Qiong Cai,Wei Yan
Practical operation of lithium-sulfur (Li-S) batteries with high sulfur loading and efficient/stable sulfur conversion requires the suppression of the lithium polysulfides (LiPSs) shuttling and the facilitation of ion and electron transfer on the electrode material surface. Herein, a multifunctional current collector, composed of Ag@polypyrrole (PPy) coated electrospun carbon nanofibers (CNF) framework, was rationally designed to construct a highly efficient catalytic/absorptive/conductive network to improve the performance of Li-S batteries under practical operation condition. At the molecular scale, the Ag@PPy molecular not only effectively inhibits LiPSs shuttle effect, but also achieves the fast sulfur catalysis and depolarization during charge transfer due to the high conductivity of Ag nanoparticles. At the electrode scale, the three-dimensional (3D) robust fibrous nanostructure provides abundant physical space to realize high sulfur loading, maintains electrode integrity during large volume change of active sulfur and under mechanical abuse condition, as well as enables the high-flux Li + diffusion and electrolyte flow. Consequently, Li-S batteries with the CNF/Ag@PPy current collector delivered excellent cycling stability (capacity fading of 0.048% per cycle over 500cycles at 1.0C) and high energy density (234.2 Wh kg cell -1 under high sulfur loading of 9.77 mg cm −2 ). Flexible Li-S batteries are also fabricated indicating the feasibility of the CNF/Ag@PPy current collector in flexible devices.
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高影响因子
Microsystems & Nanoengineering
·
2023
·Vol. 9
·期 1
·1-10
·
IF 7.9
Cheng Yuemeng,Feng Shaoqing,Ning Qihong,Li Tangan,Xu Hao,Sun Qingwen,Cui Daxiang,Wang Kan
In this research, we design and implement a small, convenient, and noninvasive paper-based microfluidic sweat sensor that can simultaneously detect multiple key biomarkers in human sweat. The origami structure of the chip includes colorimetric and electrochemical sensing regions. Different colorimetric sensing regions are modified with specific chromogenic reagents to selectively identify glucose, lactate, uric acid, and magnesium ions in sweat, as well as the pH value. The regions of electrochemical sensing detect cortisol in sweat by molecular imprinting. The entire chip is composed of hydrophilically and hydrophobically treated filter paper, and 3D microfluidic channels are constructed by using folding paper. The thread-based channels formed after the hydrophilic and hydrophobic modifications are used to control the rate of sweat flow, which in turn can be used to control the sequence of reactions in the differently developing colored regions to ensure that signals of the best color can be captured simultaneously by the colorimetric sensing regions. Finally, the results of on-body experiments verify the reliability of the proposed sweat sensor and its potential for the noninvasive identification of a variety of sweat biomarkers.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Donglai Peng,Shaofan Duan,Xiaoquan Feng,Zongkai Liu,Jing Wang,Dongyang Li,Yatao Zhang
The membrane-based technology for propylene/propane (C 3 H 6 /C 3 H 8 ) separation is very promising due to its low-energy separation process with high effectiveness. Herein, we propose a new type of mixed-matrix membranes (MMMs) containing zero-dimension non-porous porphyrin-based complex (M-TMCPP, M = Zn 2+ , Cd 2+ , Ni 2+ ) with coordinatively unsaturated metal sites. Density functional theory calculation results show that M-TMCPP can form π complexation with C 3 H 6 and facilitate C 3 H 6 molecule through membranes. Different from porous nanofillers, M-TMCPP exhibits zero-dimension non-porous molecular structure and can be dissolved in solvent at molecular lever under low concentration. Benefiting from the favorable interaction between C 3 H 6 with metal sites and the uniform distribution of M-TMCPP particles and/or even independent M-TMCPP molecules in polymer, the porphyrin-based complexes are used as nanofillers in fluorinated polyimide (6FDA-DAM). The prepared MMMs exhibit an extraordinary C 3 H 6 /C 3 H 8 ideal selectivity of up to 45.6 with a high C 3 H 6 permeability of 70.3 Barrer, far surpassing the previously reported 6FDA-based polyimide MMMs and polymeric membranes. Membrane performances of three different M-TMCPP MMM were studied and the gas transportation mechanism was evaluated. This work provides a new conceptual approach of using non-porous zero-dimensional complexes with coordinatively unsaturated sites as fillers in mixed matrix membranes, which not only can accomplish olefin/alkane separation with ultrahigh performance, but also indicates its high potential for feasible usage.
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高影响因子
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