ACS Omega
·
2022
·
IF 4.132
Xiaofei Li,Xin Ding,Yuhang Du,Chao Xiao,Kang Zheng,Xianglan Liu,Xingyou Tian,Xian Zhang
Liquid metals (LMs) are playing an increasingly important role in the fields of flexible devices, electronics, and thermal management due to their low melting point and excellent thermal and electrical conductivity, and the transformation of LMs in deionized water has recently received much attention. In this paper, we investigate the transformation process of EGaIn microspheres in deionized water and propose a two-step process of microspherical transformation, whereby the microspheres are first deformed into a spindle shape and then into lamellar nanorods. It is also shown that the growth of GaOOH crystals drives the transformation. Based on this result, EGaIn microspheres with controllable transformation could be prepared, such as spindle or lamellar rod shapes, extending the application area of LMs.
研究领域:
材料科学
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纳米技术
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2025
·
IF 4.3
Luyao Xing,Jiaqiang Ding,Jiaqi Gao,Dongliang Chen,Chengdong Xiong,Zuochun Xiong
The self-assembly of macromolecular segments promotes the fabrication of polymer microspheres with multiple morphologies. Inspired by the xanthium shells, A dual-driven self-assembly method have defined that enables the construction of multi-dimensional morphologies on the microsphere surface at emulsion-confined interfaces. The two driving forces are derived from the phase separation caused by the immiscibility of macromolecular segments and the different interactions between chain segments of different hydrophilicity and water molecules. The synergistic effects of these two forces, the xanthium shell structure is constructed on the microsphere surface, enabling the development of increasingly complex superstructure. This scalable approach provides extensive potential for the self-assembly technology of block copolymers with opposite properties.
研究领域:
材料科学
·
高分子化学
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small Structures
·
2025
·
IF 11.3
Tian Li,JiaTong Li,DanDan Zhi,Jinzhe Li,Wenting Deng,RunHua Zhang,Renchi Qin,Qing Qi,Chul B. Park,Li Ma,Fanbin Meng
In response to the increasing need for high-performance microwave absorption materials (MAMs), this study introduces a multiaxis electrospinning method for synthesizing graphene-based aerogel microspheres (GAMs) aimed at broadband microwave absorption (MA). The micro/nanostructures and shell configurations of GAMs are effectively regulated and controlled to establish a predictable structure-properties relationship via establishing equivalent electromagnetic (EM) models. The computational simulations results of the structure–property relationship are employed as guidance to evaluate the effects of structural features, like hollow structures and multilayered shells. The analysis reveals that enhancing the hollow cavity optimizes impedance matching and promotes MA performance. Utilizing these insights, the fabricated hollow GAMs (HGAMs) achieve an effective absorption bandwidth (EAB) of 8.1 GHz and an optimal reflection loss of −34.8 dB at 3.3 mm thickness. Further simulations involving various hierarchical structures of GAMs arranged into mono/bilayer arrays investigate the group coupling effects on MA performance through the synergistically absorptive, interferential, and resonant attenuation mechanisms. Actual MA performance examination using an arch method on HGAM bilayer arrays confirms the simulations, achieving an EAB of 15 GHz at a thickness of 7 mm. Consequently, this approach demonstrates a promising avenue for developing lightweight, nanostructured MAMs suitable for advanced applications.
研究领域:
材料科学
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电磁学
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY B
·
2024
·
IF 2.8
Chenxi Liang,Ye Jia,Hongyi Qi,Mingsen Chen,Yanbin Huang,Wantai Yang
Self-stabilized precipitation (2SP) polymerization enables the facile synthesis of uniform polymer spheres with sizes ranging from 100 nm to 3 μm, without the need for stabilizers or cross-linkers, even at high monomer concentrations of up to 30%. While previous studies have extensively explored the influence of reaction conditions on the size and uniformity of microsphere products, their impact on particle morphology has received less attention. In this work, we demonstrate that particle growth in 2SP polymerization primarily occurs via the adsorption of polymers from the solution onto the particle surface, leading to an increase in particle circularity and a smoother surface. The surface roughness of the particles is controlled by the aggregation of primary particles and the subsequent polymer adsorption process during the growth stage. Smooth microspheres are obtained under conditions of moderate monomer concentration, high initiator concentration, and elevated temperature. Our findings highlight the significance of the particle growth process in determining particle morphology in addition to the well-established role of polymer–solvent interactions during precipitation polymerization.
研究领域:
聚合物化学
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材料科学
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胶体科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yuseok Kim,Chae Hwa Kim,Tae Hee Kim,Suk Hee Park
This study presents a biomimetic 3D customizable artificial vascular graft with a highly porous and uniform microscale structure. The structural features were obtained by dip coating of a highly close-packed microsphere suspension on a 3D printed sacrificial template. Considering the structured arrangement of microspherical porogens in the coating layer, the microsphere-leached constructs showed higher uniformity and porosity than the conventionally particulate-leached structures, leading to ultrasoft mechanical compliance. Considering biomechanical compatibility, the resulting elastic moduli were at the sub-MPa level, comparable with those of native vascular tissues. In addition, the developed porous graft was reinforced selectively at the edge regions using a nonporous coating to secure its practical sutureability for clinical use. The sufficiently low cytotoxicity was clinically confirmed to alleviate the stiffness mismatch issues at the anastomotic interface between the native tissue and the artificial graft, thus overcoming the relevant clinical complications. Furthermore, the overall superior properties could be implemented on the 3D printed template for patient-specific medicare, thus implying the manufacturability of patient-specific vascular grafts.
研究领域:
生物材料学
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组织工程学
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再生医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Wen Zheng,Tao Hu,Yaobing Fang,Li Li,Wenhui Yuan
Metal organic frameworks (MOFs) have received great interest for Li-ion batteries (LIBs) owing to their variable structure and morphology. Herein, a microspheric manganese and cobalt trimesic dual-metal organic framework (MnCo-T) with diameters between 1 and 2 μm has been synthesized. The microspheric MnCo-T retains a high capacity of 819 mAh g −1 at 200 mA g −1 after 200cycles and exhibits good rate performance (148 mAh g −1 at 4000 mA g −1 ). Notably, it can maintain a considerable lithium storage capacity (337 mAh g −1 after 600 galvanostatic charging/discharging cycles at 1000 mA g −1 ), indicating that the design of dual-metal organic frameworks is an effective strategy for enhancing Li storage performance.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Jiangli Sun,Jinhang Yang,Jiaxiang Liang,Lingli Tu,Yuejing Bin,Yanping Hou
It is crucial to design efficient photocatalysts for elimination of combined pollutants in wastewater. Herein, the S-scheme Zn 3 In 2 S 6 -BGQDs/AgBr (ZBA) heterojunction was synthesized through co-modification of Zn 3 In 2 S 6 with B-doped graphene quantum dots (BGQDs) and AgBr nanoparticles using solvothermal method for synchronous removals of nitrofurazone (NFZ) and Cr (VI). Characterization results revealed that ZBA showed superior photocatalytic activity than the counterparts. In NFZ-Cr (VI) coexistence environment, removal efficiencies towards NFZ and Cr (VI) were 95.23% and 99.39% using the ZBA photocatalyst within 2 h of visible light irradiation. Results demonstrated that ∙OH, h + and ∙O 2 − played major role for NFZ removal, while mainly e - and ∙O 2 − contributed to Cr (VI) reduction. The S-scheme heterojunction mechanism of ZBA was confirmed by energy band structure analysis, ESR and calculated work function. Possible pathways and mechanisms of NFZ degradation were proposed according the identified intermediates. Besides, the ecotoxicity of intermediates was analyzed. This study advances the development of photocatalytic treatment of combined-polluted wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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光催化
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产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2022
·Vol. 103
·期 3
·865-875
·
IF 2.606
Jia Jiannan,He Mengting,Wang Yunpeng,Zhang Wei,Wan Jun,Zhang Yuting,Xu Qiang,Chen Shiguo,Qiao Xvsheng,Fan Xianping
A propylene oxide (PO)-driven fast sol-gel route followed with a post high temperature calcination were utilized to synthesize Ca x Sr 1- x Al 2 O 4 : Eu 2+ cationic solid solution phosphors with micro-spherical morphologies and improved internal quantum efficiencies. The polyethylene oxide (PEO) was also employed to induce the phase separation of Ca x Sr 1- x Al 2 O 4 : Eu 2+ precursors to get monodispersed spherical morphologies in the sol-gel system. Benefit from uniform copolymerization of each chemical components and pyrolysis of organic matter, Ca, Sr, Al and O were homogenously distributed in the produced Ca x Sr 1- x Al 2 O 4 : Eu 2+ cage like microspheres. It helps to efficiently trap incident light and to improve the PL efficiencies. By changing the ratio of Ca/Sr, infinite solid solution polycrystalline phosphors, Ca x Sr 1- x Al 2 O 4 : Eu 2+ microspheres with x = 0~1, can be obtained and their PL emission can be gradually tuned from green to white to blue. Micro-spherical SrAl 2 O 4 : Eu 2+ , Ca x Sr 1- x Al 2 O 4 : Eu 2+ and CaAl 2 O 4 : Eu 2+ phosphors exhibited internal quantum efficiencies as high as 71.1, 35.3~45.9 and 75.3%, respectively.
Graphical abstract
研究领域:
材料科学
·
化学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jiapin Liu,Yun Huang,Zhixing Zhao,Wenhao Ren,Zhuangzhi Li,Chao Zou,Ling Zhao,Zhaomin Tang,Xing Li,Mingshan Wang,Yuanhua Lin,Haijun Cao
The sodium super ion conductor (NASICON) structure materials are essential for sodium-ion batteries (SIBs) due to their robust crystal structure, excellent ionic conductivity, and flexibility to regulate element and valence. However, the poor electronic conductivity and inferior energy density caused by the nature of these materials have always been obstacles to commercialization. Herein, using yeast as a template to derive NASICON structure Na3MnTi(PO4)3 (NMTP) materials (noted as Yeast@NMTP/C) is presented. The Yeast@NMTP/C material retains the microsphere morphology of the yeast template and not only controls the particle size (around 2 μm) to shorten the Na+ diffusion pathways but also improves the electronic conductivity to optimize the electrochemical kinetics. The Yeast@NMTP/C cathode delivers reversible multielectron redox reactions including Ti4+/3+, Mn3+/2+, and Mn4+/3+ and exhibits a high capacity of 108.5 mAh g–1 with a 79.2% capacity retention after 1000 cycles at a 2C rate. The sodium storage mechanism of Yeast@NMTP/C reveals that the addition of Ti4+/3+ redox plays a key role in improving the Na+ diffusion kinetics, and both solid-solution and two-phase reactions take place during the desodiation and sodiation process. Additionally, the high-rate and long-span cycle performance of Yeast@NMTP/C at 10C is ascribed to contribute to pseudocapacitance.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）