Small
·
2023
·
IF 13.3
Huajiang Hu,Jiurong Li,Xiao Gong
Hour-level persistent room temperature phosphorescence (RTP) phenomena based on multi-confinement carbon dots (CDs) are reported. The CDs-based system reported here (named Si-CDs@B 2 O 3 ) can be efficiently synthesized by a simple pyrolysis method compared to the established persistent RTP systems. The binding modes of CDs, silica (SiO 2 ), and boron oxide (B 2 O 3 ) are deduced from a series of characterizations including XRD, FT-IR, and TEM characterization. Further studies show that the formation of covalent bonds between B 2 O 3 , SiO 2 , and CDs play a key role in activating the persistent RTP and preventing its quenching. This is a rare example of a persistent RTP system that exhibits hourly persistent RTP under environmental conditions. Finally, the applications of Si-CDs@B 2 O 3 are demonstrated for anti-counterfeiting, long-duration phosphorescence imaging, and fingerprinting. This synthetic strategy is expected to provide strong technical support for the preparation of persistent RTP CDs and pave the way for the synthesis of persistent RTP CDs in the future.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Zhige Zhang,Guican Bi,Shenglong Zhang,Tao Tan,Jun Xie
The use of biogas as renewable raw material to produce syngas（H 2 /CO ≈ 2）suitable for direct synthesis of methanol has attracted wide attention, but designing promising catalysts with high activity and stability remains a challenge. The catalytic systems used for this process usually have the characteristics of poor stability and easy carbon deposition. Here, Based on the Ce redox cycle and the strong metal-support interaction (SMSI), we designed and synthesized a series of Ni catalysts (denoted as Ni/CeMgO x /BN) with BN interfacial constraints. The abundant oxygen vacancy of reaction-induced Ce redox cycle endows Ni/CeMgO x /BN with excellent carbon resistance, because the ability to activate CO 2 /H 2 O is significantly enhanced. The CO 2 /H 2 O activation and carbon elimination mechanism were comprehensively characterized by in situ H 2 -TPR/CO 2 /H 2 O-TPSR, in situ CH 4 -TPSR/CO 2 /H 2 O-TPO, and FTIR, etc. Ascribed to the appropriate basicity of CeMgO x , homogeneous Ni dispersion, and strong interaction between Ni ultra-small nano particles (NPs) and CeMgO x /BN, Ni/CeMgO x /BN exhibit higher CO 2 /H 2 O adsorption/activation, higher CH 4 activation/dissociation, compared with another samples, which facilitate the formation of active oxygen species and intermediate coke removal, thus enhance the resistance to coke deposition and sintering. At 750 °C, Ni/CeMgO x /BN exhibit satisfying catalytic activity (CH 4 /CO 2 conversation 92 %/52 %) and superior stability (100 h) with negligible deactivation rates.
研究领域:
化学工程
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Miaomiao Zhu,Wenxuan Xu,Long Chen,Duo Wu,Zhi Wang,Xiaoxue Hu,Xingrong Luo,Ranhua Xiong,Chaobo Huang
Integrating self-healing capabilities into epidermal electrodes is crucial to improving their reliability and longevity. Self-healing nanofibrous materials are considered an ideal candidate for constructing ultrathin, long-lasting wearable epidermal electrodes due to their lightweight and high breathability. However, due to the strong interaction between fibers, self-healing nanofiber membranes cannot exist stably. Therefore, the development of self-healing and breathable nanofibrous epidermal electrodes still remains a major challenge. Here, a hierarchical confinement strategy that combines molecular and spatial confinement to overcome supramolecular hydrogen bonding between self-healing nanofibers is reported, and an ultrathin self-healing nanofibrous epidermal electrode with a neural net-like structure is developed. It can achieve real-time monitoring of electrophysiological signals through long-term conformal attachment to skin or plants and has no adverse effects on skin health or plant growth. Given the almost imperceptible nature of epidermal electrodes to users and plants, it lays the foundation for the development of biocompatible, self-healing, wearable, flexible electronics.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Shuo Meng,Shanshan Yang,Ting He,Jian Guo,Mingze Xu,Lu Chen,Kexuan Liao,Lianhai Zu,Chen Zhou,Chi Zhang,Jinhu Yang
Benzoquinone (BQ) is considered a promising cathode material for aqueous zinc-ion batteries due to its simplest molecular structure and highest theoretical specific capacity among quinones. However, intrinsic problems derived from BQ including severe dissolution, narrow crystal interplanar d-spacings accessible by desolved Zn2+ only, and poor conductivity cause inferior battery performance. Herein, a strategy based on a “nanopore-confined dual-site synergy mechanism” is proposed to stabilize the BQ cathode and boost Zn2+ desolvation/coordination reactions for stable and fast Zn storage, which is realized by the construction of CoS2 nanodot-embedded MOF-derived porous carbon (MPC) as an efficient host for BQ molecules. The MPC provides enough pore space to accommodate a substantial amount of BQ molecules with good electric conductivity, whereas CoS2 in pores offering abundant Co and S sites exerts strong chemical binding over BQ species and facilitates Zn2+ desolvation/coordination, respectively, synergistically suppressing the dissolution of cathodes and imparting the rapid reaction kinetics of batteries. Consequently, the developed BQ@CoS2-MPC cathode delivers a high reversible capacity of 458 mA h g–1 at 0.5 C, excellent rate capability, and pronounced cycling stability with a low decay of 0.003% per cycle for over 10,000 cycles at 20 C. The work proposes an effective strategy toward high-performance organic electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Tong Wen,Yunliang Zhao,Bowen Kuang,Yupeng Sun,Ying Li,Huatao Wang,Licai Chen,Renbo Gao,Lingjie Zhang,Tingting Zhang
The novel two-dimensional (2D) channel membranes have great potential for effective Li + /Mg 2+ separation due to the rapid ion transport and precise adjustment of their channels. However, the solution composition greatly affects the control of channel height, resulting in an unsatisfactory selectivity performance. Herein, the 2D montmorillonite membranes are used to understand the causes of channel instability and explore the effective solutions. It is found that the changes in solution component can enlarge the channel height by changing the cross-linking constraint of Fe 3+ between MMT nanosheets, thus leading to a weak sieving effect. To improve the channel constraint and its Li + /Mg 2+ separation, the end face and interfacial layer constraint of nanosheets are proposed. As an effective strategy to strengthen the constraint effect, glutathione can modify the end faces of nanosheets and enhance the mutual binding force between them through its oxidative transformation. Besides, the construction of an interfacial layer can also limit channel swelling by altering the membrane hydration and wetting. These strategies will also form a synergistic regulatory effect. Consequently, a superior membrane is obtained and presents an improved selectivity of 8.89 at 100:1 Mg 2+ /Li + ratio. These innovative approaches offer a valuable framework for creating high-performance 2D channel membranes, which can also support their wider application in the Li + /Mg 2+ separation.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 63
·期 2
·489-498
·
IF 3.2
Wenting Xu,Qianqian Gu,Fanghua Zhu,Qiang Chen,Yiyang Liu,Jie Li,Meifang Liu,Yong Yi
Polymer microspheres can be used as fuel containers for laser inertial confinement fusion (ICF) due to their low atomic number, low density, and high thermal stability. The thin-walled polymer microspheres are prone to cracking due to an increase in the diameter to thickness ratio (diameter/wall thickness). The effect of polystyrene (PS) and Poly (α-methyl styrene) (PAMS) materials commonly used in ICF experiments on the quality of thin-walled microspheres is investigated. PS hollow microspheres show better sphericity, smoother surface, and lower cracking rate than PAMS microspheres. Moreover, the heat treatment of solidified PS microspheres can improve the strength so that the cracking rate of the microspheres decreases. The relative mechanism of how the molecular structure affect the quality is also discussed. This study provides some guidance for the preparation of thin-walled polymer microspheres with high quality for ICF experiments.
研究领域:
材料科学
·
核物理学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Liqing Ai,Weikang Lin,Limei Ai,Yannan Li,Mengyi Qiang,Xiaoya Wang,Min Shi,Zhengbao Yang,Xi Yao
The integration of soft, conformable components and rigid microelectronics or devices is a critical frontier in stretchable hybrid device development. However, engineering interconnects capable of tolerating high-stress concentrations and preventing debonding failures remain a key challenge. Here a stretchable conductive interconnect derived from the liquid metal conductor with supramolecular confinement is reported, capable of reliably connecting soft and rigid parts through a simple “Heat-Press-N-Go” method. Leveraging the dynamic bonding nature of supramolecular polymers, when confined within liquid metal compartments, not only effectively stabilizes the conductive path of the stretchable interconnect, but also offers high adhesion to diverse surfaces, reaching an exceptional electrical stretchability of up to 2800%. As proof of concept, this interconnect is used to assemble wearable devices including reconfigurable stretchable circuits, multifunctional sensors, and on-skin electromyography, exhibiting high signal integrity and mechanical durability. The “Heat-Press-N-Go” chip and circuit integration offers the boundless potential to enhance the adaptability, convenience, and versatility of on-skin and wearable electronics across various applications.
研究领域:
材料科学
·
柔性电子学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 23
·2309171
·
IF 14.3
Xuefeng Zhang,Xudong Liu,Qingqiang Liu,Yufa Feng,Si Qiu,Ting Wang,Huayu Xu,Hao Li,Liang Yin,Hui Kang,Zhimin Fan
Enabling materials to undergo reversible dynamic transformations akin to the behaviors of living organisms represents a critical challenge in the field of material assembly. The pursuit of such capabilities using conventional materials has largely been met with limited success. Herein, the discovery of reversible constrained dissociation and reconfiguration in MXene films, offering an effective solution to overcome this obstacle is reported. Specifically, MXene films permit rapid intercalation of water molecules between their distinctive layers, resulting in a significant expansion and exhibiting confined dissociation within constrained spaces. Meanwhile, the process of capillary compression driven by water evaporation reinstates the dissociated MXene film to its original compact state. Further, the adhesive properties emerging from the confined disassociation of MXene films can spontaneously induce fusion between separate films. Utilizing this attribute, complex structures of MXene films can be effortlessly foamed and interlayer porosity precisely controlled, using only water as the inducer. Additionally, a parallel phenomenon has been identified in graphene oxide films. This work not only provides fresh insights into the microscopic mechanisms of 2D materials such as MXene but also paves a transformative path for their macroscopic assembly applications in the future.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2022
·
IF 4.432
Xinxin Tan,Jie Du,Yiliu Liu,Jingwen Ba,Xiaoyu Yang,Xiwen Yang,Meifang Liu,Wenhua Luo
Deuterated polymers have been widely used in many researches, such as small-angle neutron scattering, NMR studies and inertial confinement fusion, but the types of deuterated polymers that can be used are still very limited. In this work, we introduce the concept of supramolecular polymers to develop new deuterated materials toward applications in inertial confinement fusion. To this end, cycloocene- d 14 with deuterium content of 97% is prepared and has been further used as monomers . Deuterated macromonomers with 2-ureido-pyrimidinone as end groups are prepared via either a multistep or a “one-pot” approach. The supramolecular deuterated polymers are formed by the hydrogen-bonding mediated supramolecular polymerization of the macromonomers. With the obtained supramolecular deuterated polymers, uniform polymer shells toward ICF experiments are prepared by the microfluidic technique and solvent evaporation method.
研究领域:
材料科学
·
核物理学
✓ 已验证
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 6
·e7098
·
IF 3.9
Tao Chen,Xiangning Jiang,Ning Zhao,Mehar U. Nisa,Zhenhua Li
Fischer–Tropsch synthesis (FTS) is an essential technology to produce clean fuel, and catalyst will affect syngas conversion efficiency and product distribution. For traditional oxides-supported catalysts, the mutual constraint between active metal loading and dispersion at high metal loading is hard to overcome, which will hinder the synthesis of high-performance FTS catalysts. Herein, we report an efficient method for synthesizing iron-based catalysts with not only high loading but also high dispersion. By using metal–organic frameworks Fe-MIL-88B as the precursor, we synthesized a series of Fe@C@SiO 2 catalysts by tuning the amount of tetraethyl orthosilicate (TEOS) through a one-step method; TEOS was in situ introduced and followed by high-temperature carbonization. The prepared catalyst possesses a Fe@C core–shell structure with carbon layer encapsulation. Meanwhile, the SiO 2 in the catalyst can effectively confine iron particles and avoid the agglomeration of iron species during high-temperature carbonization. Among these catalysts, the Fe@C@SiO 2 -0.005 showed the greatest FTS performance because high iron dispersion was achieved at high iron loading. Further increase SiO 2 content enhanced the confinement effect of SiO 2 but generated inert Fe 2 SiO 4 species, which decreased the adsorption and activation of reactants and FTS activity.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Mechanical Behavior of Biomedical Materials
·
2025
·
IF 3.5
Bincan Deng,Sibai Chen,Fernando López Lasaosa,Xuan Xue,Chen Xuan,Hongli Mao,Yuwen Cui,Zhongwei Gu,Manuel Doblare
- Rheological properties are pivotal in determining the printability of biomaterials, directly impacting the success of 3D bioprinted constructs. Understanding the intricate relationship between biomaterial formulations, rheological behavior and printability can facilitate the advancement and rapid development of biomaterials. Herein, we critically measured the rheological properties of hyaluronic acid methacrylate (HAMA)/gelatin methacrylate (GelMA) hybrid hydrogels with varied formulations and generated a dataset to train a machine learning (ML) model. By utilizing four well-known algorithms, we developed the ML model for the viscosity and shear stress of HAMA/GelMA hydrogel mixtures. To improve model interpretability, we further created a multilayer perceptron framed model, known as HydroThermoMLP, by incorporating the Redlich-Kister polynomial as the thermodynamic representation of viscosity of mixtures. To accomplish the MLP learning on limited data, the shared loss function was formulated on the basis of the R-K presentation to guide the joint training process. The established HydroThermoMLP model, while maintaining the same accuracy as Random Forest, produces outputs that adhere to thermodynamic constraints and instill confidence in generalization applications with a simple algorithm informed by the R-K polynomial. It presents a robust predictive ML tool to forecast the viscosity of hybrid hydrogels and direct the design of biomaterials while appropriately abiding by thermodynamic constraints as essential guidelines.
研究领域:
生物材料学
·
医学工程
·
人工智能应用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 31
·期 2
·2001867
·
IF 16.836
Ruirui Zhao,Ying Yang,Ganxiong Liu,Renjie Zhu,Jingbo Huang,Zhiyuan Chen,Zhonghui Gao,Xiao Chen,Long Qie
With advantages such as high theoretical capacity, low cost, and nontoxicity, Zn metal has been widely investigated as an anode for aqueous batteries. However, the problems of dendrite formation and sustained corrosion originating from severe interfacial side reactions and uncontrolled Zn electrodeposition in aqueous electrolytes significantly slows down the practical application of Zn metal anodes. To address these issues, herein, an anti-corrosion elastic constraint (AEC) is introduced that is built with nanosized TiO 2 and polyvinylidene fluoride (PVDF) matrix to Zn anode, where the PVDF layer serves as an elastic H 2 O/O 2 -blocking layer and the decorated TiO 2 nanoparticles assist uniform Zn electrodeposition. With this corrosion-inhibition and electrodeposition-redirection coating, the electrodeposition consistency and thermodynamic stability of the Zn anode are significantly improved, enabling a long-term stable plating/stripping performance for 2000 h with an ultralow overpotential (<50 mV) and a high average Coulombic efficiency (>99.4%) for 1000 cycles without obvious dendrite formation. Even at a high current density of 8.85 mA cm −2 with limited Zn supply (DOD Zn = 60%), stable Zn deposition is achieved over 250 h. When coupled with a MnO 2 cathode, the AEC-Zn anode shows a remarkably enhanced full-cell cycling stability, indicative of high reliability of aqueous Zn batteries for practical application.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）