CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jingxian Wang,Hua Ma,Bo Yuan,Shiwen Yang,Qingquan Tang,Yuping Chen,Yuxuan Zhu,Hua Wang,Luoxin Wang,Siwei Xiong
To address process and interface limitations in aramid honeycomb for aerospace and rail transportation, this work develops polyarylate (PAR) nanofibers with high aspect ratios using melt spinning coupled with wet dissociation, exploiting the liquid crystalline behavior of PAR to enhance molecular alignment and mechanical integrity. A scalable template thermal welding process was used to enable directional assembly and strengthen interfacial fusion in PAR nanofiber honeycomb (PAR NFHC), effectively mitigating stress concentration and delamination failures caused by fiber/resin interface mismatch in conventional aramid honeycombs. PAR NFHC demonstrates exceptional mechanical properties, with compressive strength, specific strength, and Young's modulus reaching 161 MPa, 290 kN·m·kg −1 , and 977 MPa, respectively-up to 40 times higher than commercial HC. Even after prolonged exposure to high temperatures (200 °C for 24 h) and ultraviolet radiation (24 h), PAR NFHC retains compressive strengths of 151.8 MPa and 146 MPa, respectively, with minimal degradation, whereas commercial HC experiences a substantial reduction to 1.8 MPa and 1.9 MPa. PAR NFHC exhibits excellent flexibility, enduring single-point bending at 45° and double-point bending at 30° without failure. The thermoplasticity of PAR NFHC enables closed-loop recycling, minimizing resource consumption while maintaining performance. This property positions PAR NFHC as a promising candidate for the sustainable development of high-performance honeycomb materials.
✓ 已验证
产品关联
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.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Wei Ma,Binghua Yao,Wen Zhang,Yinglong Chen
In this manuscript, hierarchical MoS 2 nanotubes (NTs) with different aspect ratio (length/diameter) were successfully synthesized via one-step solvothermal method for piezocatalytic applications. SEM indicated that the constructed MoS 2 NTs-13 had perfect uniformity while TEM demonstrated the hollow interior. Such hierarchical tubular structures consisting of cross-linked MoS 2 single-/few-layered nanosheets featured large specific surface area (85.83 m 2 g −1 ) and high porosity. The MoS 2 NTs-13 with high aspect ratio exhibited the optimum piezocatalytic performance, achieving 93.26% degradation efficiency for sulfamethazine (SMZ, 20 mg/L) within 10 min, leading to a high first-order rate constant of 0.2486 min −1 , which was 2.48 times higher than that of MoS 2 NTs-10. Piezoelectrochemical measurements suggested that MoS 2 NTs-13 displayed stronger piezoelectric current response and lower charge transfer resistance. The radical trapping experiments and electron spin resonance analysis confirmed that hydroxyl radicals ( OH) and superoxide radicals ( O 2 – ) were the main reactive oxygen species (ROS) for SMZ degradation. Furthermore, six degradation intermediates of SMZ were identified and two possible degradation pathways were proposed. This work provides design strategies for optimizing structural stability of ultrathin two-dimensional nanomaterials, and offers a highly efficient method for typical antibiotics removal.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Xiaohan Liu,Peng Wang,Dun Zhang
The super-hydrophobic surface with the self-propelled droplet jumping behavior has a promising application prospect in the field of atmospheric corrosion protection. Researchers have been devoted to realizing the self-propelled droplet jumping behavior by regulation of environmental and structure parameters. Unfortunately, these studies results are still lacking obviously. Herein, we facile fabricate the super-hydrophobic surface with high-aspect-ratio nanorod arrays by simple hydrothermal modification technique. The basic characteristics of the prepared surface are described by scanning electron microscopy, X-ray diffractometer, X-ray photoelectron spectroscopy and contact angle meter. In addition, the self-propelled droplet jumping behavior is observed and the behavior is analyzed by energy conservation and evaluated by droplet surface coverage. On this basis, the atmospheric corrosion protection performance of the surfaces is measured by electrochemical test. This work provides a new fabricate method and design strategy of super-hydrophobic surfaces with self-propelled droplet jumping behavior and excellent atmospheric corrosion protection performance.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULES
·
2020
·
IF 5.918
Rui Qi,Yulin Zhu,Liang Han,Meijing Wang,Feng He
Fabrication of two-dimensional (2D) nanomaterials by conjugated polymers attracts increasing interest on account of their potential applications in optoelectronic devices. Precise control over the shape and size of the 2D nanostructures, however, is still challenging. We have developed a series of 2D rectangular micelles by hierarchical self-assembly of poly(3-hexylthiophene) (P3HT)-b-poly(ethylene glycol) (PEG) in i-PrOH. The aspect ratios and the sizes of the 2D rectangular micelles are controlled by the ratios of P3HT and PEG blocks, and the sizes of these 2D micelles are strongly concentration-dependent. Large and complex assembled architectures can be obtained in highly concentrated solutions. It is found that the block copolymers first assemble into fibers and then reorganize into 2D rectangular micelles with π–π interactions playing a key role in the formation of the 2D micelles. This offers a new method to prepare 2D nanostructures with controllable shapes and sizes for organic electronic devices.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Changkun Ding,Jianhua Du,Yuemiao Cao,Chengfei Yue,Bowen Cheng
Collagen is a natural one-dimensional nanomaterial. Multi-walled carbon nanotubes (MWNTs) have been previously shown to interact with biomolecules and to have promising applications in reinforced biopolymers for tissue engineering and regenerative medicine. In this work, collagen/MWNT composite fibers are prepared using dry-jet wet-spinning technology. Three types of MWNTs with aspect ratios of 40, 150, and 4000 are used to investigate the effects of the MWNT aspect ratio on the properties of the composite fibers. There results show that there are strong molecular interactions between the MWNTs and collagen molecules. The mechanical properties and thermal stability of the composite fibers are significantly improved compared to those of the collagen fibers. The diameter and aspect ratio of the MWNTs are the main factors affecting the self-assembled structure of the collagen molecules, the alignment of the microfibrils, and the mechanical and thermal performance of the composite fibers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2018
·Vol. 44
·期 10
·5697-5709
·
IF 1.674
Liu Xin,Dang Li,Nai Xueying,Dong Yaping,Li Wu
Well-dispersed, high-aspect-ratio 4ZnO·B 2 O 3 ·H 2 O whiskers (4ZnO·B 2 O 3 ·H 2 O HARw ) were synthesized by a facile hydrothermal method with the aid of ZnSO 4 ·7H 2 O. The formation mechanism was investigated, and the results showed that Zn 2+ and SO
2− 4
ions played a crucial role in the control of 4ZnO·B 2 O 3 ·H 2 O HARw extended along [010] direction. X-ray diffraction (XRD) analysis, high-resolution transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), and thermogravimetry (TG)-differential scanning calorimetry (DSC) results confirmed that the powder was 4ZnO·B 2 O 3 ·H 2 O. Scanning electron microscopy (SEM) and TEM showed that the average aspect ratio of the product was about 100. Nanocomposites of surface-modified 4ZnO·B 2 O 3 ·H 2 O SM-HARw /PP were prepared and their mechanical properties measured. The results suggested that the mechanical properties of 4ZnO·B 2 O 3 ·H 2 O SM-HARw /PP composites were superior to composites made with low-aspect-ratio whiskers (4ZnO·B 2 O 3 ·H 2 O SM-LARw ), which displayed poorer mechanical properties even at low addition.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2017
·
IF 3.454
Fei Zuo,Fan Meng,Dong-Tao Lin,Jun-Jie Yu,Hong-Jian Wang,Shen Xu,Wei-Ming Guo,Carmen Cerecedo,Víctor Valcárcel,Hua-Tay Lin
A novel composite of 12 mol% CeO 2 -stablized tetragonal ZrO 2 reinforced with Al 2 O 3 whiskers (designated as Ce-TZP/A w ) has been prepared and studied in this work. The objective of this investigation was to systematically study the influence of whisker-aspect-ratio on the densification behaviors, microstructure evolution, and mechanical properties of Ce-TZP/A w composite. Results showed that the sintered density of composite increased and the grain growth tended to diminish with the decrease in whisker aspect radio. Both the fracture toughness and flexural strength reached maximum values of 475 ± 12 MPa and 11.4 ± 0.2 MPa m 1/2 , respectively at a whisker aspect ratio of about 12. It was also observed that the fracture toughness, flexural strength and tetragonal to monoclinic ZrO 2 transformation of the dual-phase composite exhibited similar variation trend as a function of the whisker-aspect-ratio, which suggested that the stress-induced phase transformation should be the main toughening and strengthening mechanism in the Ce-TZP/A w composite.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Ke Li,Qifei Xia,Lei Jin,Rongbin Xu,Yi Zhong,Daquan Yu
Leveler additives for Cu electrodeposition are critical for achieving bottom-up filling in micrometer scale and high aspect ratio (AR) through-silicon vias (TSVs). This study explores a highly effective imidazolium-based leveler electroplating formulation, which successfully achieves void-free filling of TSVs with a diameter of 3 μm and a depth of 45 μm (with an ultra-high AR of 15:1). Molecular dynamics simulations reveal that the leveler, 1,2-dimethyl-3-propylimidazolium iodide (DMPII), demonstrates a strong adsorption effect on the Cu surface. Electrochemical tests show that DMPII enhances the inhibitory effect of polyethylene glycol (PEG) while simultaneously amplifying the accelerating effect of bis-(sodium sulfopropyl)-disulfide (SPS). The complex interplay among these additives ultimately leads to a significant inhibitory effect on the electrochemical reduction of Cu ions at the TSV sidewalls, while promoting deposition at the bottom of the TSV. Furthermore, minimal impurities are detected in the electroplated Cu layer. These findings suggest that this DMPII-based electroplating formulation holds significant promise for the fabrication of ultra-high AR TSVs to enable future high-density 3D integration.
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Zebing Xiao,Yutong Xiong,Yonghua Zhang,Xiaoyun Li,Yixiang Wang,Xiaoying Wang
Bamboo pulp fines (BPF) are defined as bamboo pulp waste. BPF, including fine fibers and abundant non-fibrous cells, are detrimental to the performance of paper and are usually regarded as waste and discarded. In this work, inspired by the loose structure of non-fibrous cell walls in bamboo, a mild method for converting BPF into CNFs was developed. By leveraging the loose structure of BPF, high-density surface carboxyl groups were introduced via low-toxic (relatively less hazardous than nitro-based oxidants) maleic anhydride (MAH) esterification reactions, significantly enhancing dispersibility and interfacial compatibility. Combined with gentle mechanical disintegration, successfully resulting in CNFs (M−CNFs) with a diameter of approximately 2.6 nm, an aspect ratio exceeding 1000, a carboxyl content of 1.45 mmol/g, and a yield of approximately 98%. Furthermore, M−CNF−based nanofilms exhibited exceptional mechanical properties, achieving 107 MPa tensile strength with unique stress-dispersion mechanisms. The resulting M−CNFs serve as sustainable building blocks for multidimensional advanced cellulose materials and emulsion stabilizers. This method-produced M−CNFs offer advantages including ultrahigh aspect ratios, colloidal stability, high yield, and significant application potential, establishing a high-value valorization route for bamboo pulp waste.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Tianqi Li,Xinyu Cheng,Yifan Feng,Enqing Zhu,Qing Zhang,Baihui,Lili Zhang,Zhiguo Wang
Flexible electronic sensing and energy storage technology impose heightened demands on the mechanical and stable properties of gel electrolyte materials. Lignocellulosic nanofiber (LCNF) present a promising avenue for improving the properties of electrolyte networks and mechanical strength. In this study, LCNF derived from hemp fibers was prepared using lactic acid/choline chloride deep eutectic solvent (DES) through a combination of cooking and colloid mill mechanical treatment to achieve nanocellulose with a high aspect ratio and uniform dimensions. The outcomes demonstrated that LCNF, a width of below 20 nm and a length of over 5 μm, can be effectively produced through the DES cooking pretreatment in conjunction with colloid mill mechanical treatment. Meanwhile, DES lignin possessed a purity of ~90 % and was obtained as a by-product. Subsequently, the as-prepared LCNF was integrated as a nanofiller into gel electrolyte. Ag-L NPs/LCNF/DES/PAA exhibited dense porous structures and showcased exceptional properties, including a high conductivity exceeding 10 mS/cm and remarkable adhesion strength surpassing 100 KPa. The presence of LCNF allowed Ag-L NPs/LCNF/DES/PAA to achieve strains above 1000 % and compression properties over 1000 KPa. The supercapacitor based on this assembly had a high specific capacitance of 271 F g −1 at 0.5 A g −1 ), along with an impressive capacity retention rate reaching ~100 % after 3000 cycles. This investigation offers valuable insights into the utilization of lignocellulosic multi-component approaches in the development of flexible electronic devices.
✓ 已验证
DOI
PubMed
高影响因子
Soft Matter
·
2018
·Vol. 14
·期 35
·7107-7112
·
IF 3.709
Ting Qu,Song Guan,Chen Zhang,Xiaoxiong Zheng,Yongbin Zhao,Aihua Chen
Block copolymer (BCP) films with perpendicularly aligned cylindrical domains of high aspect ratio have important applications in diverse fields. However, an aspect ratio of the cylinders as high as 200 has rarely been reported so far. Here we demonstrate an efficient route to the formation of normally aligned P4VP cylinders with high aspect ratio surrounded by a matrix of azobenzene-containing block (PMA(Az)) via hierarchical self-assembly. A crisscross structure, consisting of parallelly aligned liquid crystalline (LC) layers and normally aligned self-assembly domains, is expected to assist the formation of well-defined nanostructures. The LC layers in the cylindrical films self-assemble to form smectic phase after solvent annealing, as confirmed by WAXD and UV-vis spectra. We found that the aspect ratio of the vertical P4VP cylinders is up to 200 and the film thickness reaches 6 μm. P4VP is a functional polymer, making this P4VP-b-PMA(Az) film more suitable for advanced filters, multi-nanochannels, nanolithography, and high-density storage media, etc.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）