NATURE MATERIALS
·
2024
·Vol. 23
·期 12
·1645-1653
·
IF 37.2
Wang Yaoyu,Yi Chenqi,Tian Wenxiang,Liu Feng,Cheng Gary J.
Nanoscale three-dimensional (3D) printing of metals and alloys has faced challenges in speed, miniaturization and deficiency in material properties. Traditional nanomanufacturing relies on lithographic methods with material constraints, limited resolution and slow layer-by-layer processing. This work introduces polymer-free techniques using two-photon decomposition and optical force trapping for free-space direct 3D printing of metals, metal oxides and multimetallic alloys with resolutions beyond optical limits. This method involves the two-photon decomposition of metal atoms from precursors, rapid assembly into nanoclusters via optical forces and ultrafast laser sintering, yielding dense, smooth nanostructures. Enhanced near-field optical forces from laser-induced localized surface plasmon resonance facilitate nanocluster aggregation. Our approach eliminates the need for organic materials, layer-by-layer printing and complex post-processing. Printed Mo nanowires show an excellent mechanical performance, closely resembling the behaviour of single crystals, while Mo–Co–W alloy nanowires outperform Mo nanowires. This innovation promises the customizable 3D nanoprinting of high-quality metals and metal oxides, impacting nanoelectronics, nanorobotics and advanced chip manufacturing.
研究领域:
材料科学
·
纳米技术
·
光子学
·
制造工程
·
光学工程
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xueru Wang,Jie Zhou,Hui Wang,Jian Zhang,Xiuwei Ma,Shanshan Qiu,Lin Chen
Reclaiming the spent graphite (SG) in the anodes of end-of-life lithium-ion batteries (LIBs) is of tremendous significance for addressing resource shortage and eco-friendliness. The impurities embedded into the graphite interlayer after multiple charge–discharge cycles hinder the free migration of lithium ions, resulting in inferior lithium storage capacity. Herein, a space-confined intercalation of deep eutectic solvent (DES) strategy is proposed, to dissolve the impurities by utilizing its great ability to form hydrogen bonds (O–H…Cl - , O–H…O and O–H…F) with PVDF binder, SEI film and the residual electrolytes within the SG, simultaneously enlarging the interlayer distance to upgrade the anode graphite. After the further pyrolysis, the as-obtained mildly expanded graphite (MEG-800) exhibited well-defined graphite microcrystalline layer structure and high graphitization degree. The moderately enlarged graphite layers provided more space for the insertion and extraction of lithium ions, endowing MEG-800 with exceptional performance in LIBs, such as extremely high charge capacity of 477.4 mAh/g at a current density of 0.1 A/g and superior reversibility and desirable cycle stability. After 100 cycles at 0.1 A/g, its capacity still retained 470.9 mAh/g with a Coulombic efficiency as high as 99.76 %. The structure-dependent lithium-ion diffusion features of MEG-800 were also examined by electrochemical kinetics analysis . This study opened up a prospective avenue for the green and efficient recycling of spent anode graphite in retired LIBs, offering a solution to the problem of shortage of battery materials and promoting sustainable development.
研究领域:
材料科学
·
储能技术
·
电化学
·
回收技术
·
可持续发展
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DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2026
·
IF 3.6
Feifei Huang,Yuliang Yi,Yuanxiao Chen,Yiping Li,Shuaishuai Yu,Yingdan Song,Xulong Gao,Yehao Deng,Jingjing Zhao
Perovskite single crystals have demonstrated tremendous application potential in radiation detection. Large-area, high-aspect-ratio perovskite single crystals are desired for array-based detection and imaging. However, the growth of high-aspect-ratio perovskite single crystals currently relies predominantly on the space-confined method, which suffers from prolonged processing times and, more critically, a restriction on the lateral size of the resulting crystals imposed by the solute transport efficiency within the confined space. Here, we report a strategy for fabricating high-aspect-ratio single crystals in unconfined, free space. We demonstrate that the anisotropic regulation of solution temperature and seed crystal size enables the realization of anisotropic crystal growth in free space, without impeding the kinetics of solute transport. Finally, a large-area, high-aspect-ratio perovskite single crystal with dimensions of 40 × 33 × 3.8 mm3 has been grown, which exhibits a high X-ray detection sensitivity of 1.73 × 104 μC Gy–1 cm–2 and the lowest detectable dose rate of 34.1 nGy s–1. The on/off ratio per dose rate reaches 9.365 × 104 s Gy–1, which is the highest among MAPbBr3 single-crystal devices reported to date. This work provides a new strategy for the growth of large-sized, high-aspect-ratio perovskite single crystals.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Miao Fu,Liuquan Lin,Xin Wang,Xiaoming Yang
Achieving the long-lived and strong room-temperature phosphorescence (RTP) is challengeable but desirable, especially for the enhanced phosphorescence and metal-free nanomaterials. Herein, we initially synthesized the green-fluorescence carbon dots (pm-CDs), and further obtained the composite of pm-CDs@DCDA with a long RTP lifetime of 1.01 s through embedding pm-CDs in dicyandiamide (DCDA). And the bright and long-lived afterglow of pm-CDs@DCDA with 365 nm of UV light excitation was observed by the naked eyes for more than 17 s either emerging as the dry solid or in water. Importantly, the phosphorescence intensity and lifetime of pm-CDs@DCDA were remarkably promoted owing to the intermolecular hydrogen bonds and the rigid environment, hence facilitating the intersystem crossing (ISC) process and restricting the non-radiative transition of triplet excitons. Taking advantage of the superior solid-state luminescence of pm-CDs@DCDA, we further innovatively prepared the white light-emitting diodes (WLEDs) with the tunable color temperatures by regulating the mass of pm-CDs@DCDA coated on the chips. This proposed study originally employed DCDA as a matrix to separate and immobilize pm-CDs, which built up a new avenue to improve the RTP property and offered a promising application in WLEDs.
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高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Muqin Wang,Xu Zhou,Jiahe Chen,Huan Lin,Zhendong Li,Xiaoling Cao,Deyu Wang,Mingkui Wang,Zhe Peng
Using a lithium (Li) metal as an anode for next-generation high-energy-density batteries is plagued due to dendritic Li plating and a huge volumetric change accompanied by drastic side reactions. In this work, the cyclic performance of the Li metal is prolonged using an anode protective structure consisting of imbedded silver nanowires (AgNWs) in a stacked graphene (SG) host. The interwoven AgNWs work as a Li nucleation guiding mesh and enable compact Li plating, offsetting the dendritic Li plating on the SG. The SG with a rational void space tolerates the volumetric variation upon cycling, significantly suppressing the electrode pulverization upon cycling. The AgNWs@SG composite architecture realizes a compact and interlaminar Li plating against the corrosion of electrolytes, achieving an improved performance at a high current density (3 mA cm–2) and capacity (3 mAh cm–2). Meanwhile, improved performance of Li||LiFePO4 full cells with a practical negative/positive capacity ratio of 3 is also demonstrated.
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ANALYTICAL CHEMISTRY
·
2015
·
IF 5.636
Nannan Liu,Zekun Yang,Xiaoding Lou,Benmei Wei,Juntao Zhang,Pengcheng Gao,Ruizuo Hou,Fan Xia
Almost all of the important functions of DNA are realized by proteins which interact with specific DNA, which actually happens in a limited space. However, most of the studies about the protein–DNA binding are in an unconfined space. Here, we propose a new method, nanopore-based DNA-probe sequence-evolution (NDPSE), which includes up to 6 different DNA-probe systems successively designed in a nanoscale confined space which unveil the more realistic characteristics of protein–DNA binding phenomena. There are several features; for example, first, the edge-hindrance and core-hindrance contribute differently for the binding events, and second, there is an equilibrium between protein–DNA binding and DNA–DNA hybridization.
研究领域:
分子生物学
·
生物信息学
·
生物物理学
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高影响因子
RSC Advances
·
2015
·Vol. 5
·期 111
·91574-91580
·
IF 3.84
Xiaoliang Wang,Jawayria Mujtaba,Fang Fang,Mashkoor Ahmad,Hamidreza Arandiyan,Hongping Yang,Guoxing Sun,Hongyu Sun
Unique 1D aligned γ-Fe2O3 nanorods anchored on 2D reduced graphene oxide nanosheets were successfully synthesized by a facile seed-assisted solution reaction and subsequent thermal decomposition method. The structural and compositional analyses by employing X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) show that each γ-Fe2O3 nanorod possesses internal void spaces. The special structural nature of the γ-Fe2O3 nanorods together with the hierarchical nanoarchitectures is responsible for a large specific surface area of ∼193.6 m2 g−1. When evaluated as an anode material for LIBs, the as-prepared composite electrodes delivered superior capacity, better cycling stability and rate capability. The excellent lithium storage properties are attributed to the advantageous structural features.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Shuang Gao,Shaoqing Chen,Feng Shi,Wenwen Jiang,Jiafu Chen
Molybdenum disulfide (MoS 2 ), as a classical layered transition-metal dichalcogenide (TMD), shows great potential as an advanced Zn 2+ storage cathode of aqueous Zn-ion batteries (ZIBs) due to high theoretical capacity and two-dimensional Zn 2+ transport channels. However, the narrow interlayer distance and the poor electrical conduction of stable 2H-MoS 2 limit its applications. In this work, the 1T-MoS 2 sheets with good electrical conduction and large interlayer spacing of 9.5 Å (designated as MoS 2 -180) have been successfully prepared by a facile hydrothermal method . The interlaminar structural water induces stable existence of metastable 1T-MoS 2 and large space distance of 6.08 Å between layers (that is larger than the size (5.5 Å) of hydrated Zn 2+ ), and contributes to its excellent hydrophilicity , promoting transmission of hydrated Zn 2+ . The interlayer spacing-tailored MoS 2 -180 cathode exhibits high specific capacity (Cs) of 226.2 mAh g −1 at 0.10 A g −1 and impressive high-rate capability. The Cs at 5.00 A g −1 is extraordinarily up to 150.9 mAh g −1 and retains 66.7% of that at 0.10 A g −1 . This is far superior to the most reported MoS 2 , MoS 2 derivatives and MoS 2 /C composite cathodes. Moreover, the activated MoS 2 -180 cathode shows robust long-term cycling stability with Cs retention of 103.6% after 500 cycles at 1.00 A g −1 . The mechanism behind these phenomena brings new insights into the structural water-induced 1T-MoS 2 for high-performance aqueous ZIBs cathodes.
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高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 49
·2306003
·
IF 29.4
Jiaxin Yang,Ming Feng,Jingru Wang,Zejia Zhao,Rui Xu,Ziyu Chen,Kang Zhang,Adnan Khan,Yingdong Han,Feng Song,Wei Huang
High-capacity optical data storage and information encryption by using glass substrates are fascinating due to merits of expanding the functionality and applicability of the optoelectronic field. However, the development of glass substrate-based multi-dimensional information encryption methods has remained a challenge because of the high hardness, brittleness and melting temperature of glasses. Herein, inspired by the unique natural structure of plant leaves, multicolor micro-texture-based physical unclonable functions (PUFs) fluorescence glass labels (MTPLs) are exploited by using ultraviolet photocurable silica nanocomposites and soft replication method. It is the first time that simultaneous rare-earth ion (RE 3+ ) space-selective doping and bionic micro-texture replication onto transparent glass have been realized, in which the doping position and fluorescence color of RE 3+ and height information of unclonable micro-texture can be selectively equipped for multilevel information encryption. The prepared micro-scale MTPLs are endowed with tunable multilevel authentication models, including macro-scale multicolor fluorescent 2D patterns, micro-scale pattern, color 3D information and intelligence authentication. A high-performance anti-counterfeiting platform with interactive authentication is also established based on the high robustness and security of MTPLs. Such unclonable bionic MTPLs based on RE 3+ space-selective doping and micro-texture duplication provide an effective and potentially universal approach for multilevel encryption and intelligent authentication.
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高影响因子
MOLECULES
·
2020
·Vol. 25
·期 20
·4789
·
IF 3.267
Xiang-rong Cheng,Wei Zhao,Wen-le Dong,Guo-wei Le
The edible and medicinal part ofInula nervosaWall. (Xiaoheiyao) is confined to its root without sufficient phytochemical and biological investigation. In this study, the secondary metabolites of root, stem, leaf, and flower ofI. nervosaWall. were visualized using Global Natural Products Social Molecular Networking (GNPS), MolNetEnhancer, XCMS(xcmsonline.scripps.edu) analysis, and `ili mapping based on high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) data to reveal their chemical differences. Among the 11 kinds of chemical repertoires annotated by MolNetEnhancer and 16 hits against the GNPS library, 10-isobutyryloxy-8,9-epoxythymol isobutyrate (1) was revealed as the most dominant and responsible marker between the roots and the other parts. Moreover, a battery of unique MS features as well as differential markers were discovered from different parts of the plant. The chemical differences contribute to the bioactivity differences, which presented in the 2,2-diphenyl-1-picryl-hydrazyl (DPPH)assay and H2O2-insulted HepG2 cells and were in significant correlations with the contents of1. real-time reverse transcription polymerase chain reaction (RT-PCR)results demonstrated thatI. nervosaWall. extracts upregulated the mRNA expression of nuclear factor E2-related factor 2(Nrf2), heme oxygenase 1(HO-1), NAD(P)H quinone dehydrogenase 1 (NQO1), manganese superoxide dismutase (MnSOD), and glutamate-cysteine ligase catalytic subunit (GCLC) actors involved in antioxidative response in H2O2-challenged HepG2 cells. These findings support the roots ofI. nervosaWall. as active parts ofXiaoheiyao, and also indicate the potential antioxidant activities of other parts.Keywords:Xiaoheiyao;GNPS molecular networking;MolNetEnhancer;XCMS online;Nrf2
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MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 11
·1-8
·
IF 5.479
Hu Xiaopeng,Xi Jiajia,Xia Yuanyuan,Zhao Faqiong,Zeng Baizhao
A space-confined synthesis method is employed for the preparation of a single-layer MoS 2 –boron doped ordered mesoporous carbon nanocomposite. A phenol-formaldehyde resin is used as carbon source to create a confined space for the formation of single-layer MoS 2 . The addition of pluronic F127, as a soft template, suppresses the stacking of MoS 2 layers and makes the composite porous. The nanocomposite is characterized by scanning electron and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and energy dispersive X-ray spectroscopy. The single-layer MoS 2 sheets have a lateral size of about 5 nm and are uniformly embedded in the composite. They possess numerous active edge sites and display a strong synergistic effect with other components. The composite is modified on a glassy carbon electrode, followed by the electrochemical imprinting of theophylline, and the resulting electrode exhibits good electrochemical response to theophylline. The linear response range is 0.01–250 μM by differential pulse voltammetry, and the lower detection limit is 5 nM. It has been successfully applied to the determination of theophylline in spiked tea drink samples.
Single-layer MoS 2 –boron doped ordered mesoporous carbon nanocomposite has large surface area and high catalysis, when coupling with molecularly imprinted polymer the resulting electrode shows highly sensitive and selective response to theophylline.
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ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Xiaoyu Xie,Xiaojun He,Xiaolong Shao,Shian Dong,Nan Xiao,Jieshan Qiu
It is a challenge to synthesize low-cost carbon materials with abundant pores by a simple route for supercapacitors. Herein, layered microporous carbons (LMPCs) with the specific surface area up to 1865 m 2 g −1 are fabricated from coal tar and melamine via a directing, space-confinement and self-sacrificed template strategy coupled with in-situ KOH activation. The button-type supercapacitor fabricated from LMPCs exhibits a high specific capacitance of 274 F g −1 at 0.05 A g −1 , a good rate performance of 191 F g −1 at 20 A g −1 and a superior cycle stability with 98.8% capacitance retention after 10000 cycles. This work presents a facile strategy for mass production of LMPCs from liquid polycyclic hydrocarbon molecules for supercapacitors.
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高影响因子
危险品化学品经营许可证（带存储）