Article
Polymer Science
Xuehui Gong, Peipei Yang, Kristen Rohm, Yi Zhong, Boran Zhao, Ica Manas-Zloczower, Harihara Baskaran, Donald L. Feke
Summary: The technique of fabricating hollow fibers with porous walls using high internal phase emulsions (HIPEs) as templates offers an environmentally friendly alternative to conventional methods. This method allows for control over the hollow structures of polyHIPE fibers, producing porous fibers with a hollow core and potential applications in drug release studies and size-selective loading and separation of materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Yuanxia Zhang, Yan Bao, Wenbo Zhang, Ru Xiang
Summary: This study investigated the stabilization mechanism of Pickering emulsion using mesoporous hollow silica microspheres (MHSMs) as stabilizers. The results showed that smaller particle size and shell thickness of MHSMs can improve the stability of Pickering emulsion, and MHSMs with intermediate hydrophobicity and suitable oil/water ratio are favorable for stability. Increasing the concentration of MHSMs within a certain range can enhance the stability of Pickering emulsion, with the optimal concentration being 1.25 mg/mL. This research opens up possibilities for the fabrication of functional materials through Pickering emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Bo Li, Jun Xiong, Chuang Peng, Ming Li, Hao Liu, WeiMing Wang, Shuai Peng
Summary: In this study, hierarchical porous hydroxyl aluminum oxide hollow microspheres with controllable structure and morphology were prepared. The CO2 trapping performance of potassium carbonate-based adsorbents prepared using these microspheres as supports was evaluated. The results showed that the loading of potassium carbonate, the pore structure, and the surface basic site of the adsorbent significantly influenced its CO2 trapping performance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Wenlong Huo, Elena Tervoort, Silvan Gantenbein, Etienne Jeoffroy, Jinlong Yang, Andre R. Studart
Summary: This study reports a cost-effective and simple process to create strong, highly porous ceramics via direct ink writing of suspensions of hollow microspheres into cellular architectures with pores at three hierarchical levels. X-ray diffraction, rheological measurements, scanning electron microscopy, and mechanical tests are conducted to thoroughly study the processing steps and morphology of the printed hierarchical porous ceramics. The presence of pores at multiple length scales significantly increases the mechanical strength of the porous structure, providing a useful platform for the manufacturing of lightweight ceramics from inexpensive and widely available feedstock materials.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Environmental
Da Wang, Yanjian Wang, Ning Liu, Hao Xu, Xiaohui Jiang, Liangmin Yu
Summary: This study used a soap-free lotion polymerization method and a seed polymerization method to prepare three-layer composite microspheres with PMMA as the seed and DVB and AN as the coating monomers. After carbonization at a high temperature of 700 degrees Celsius, PMMA exhibited excellent electromagnetic wave absorption performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Fei Zhou, Renheng Wang, Sicong He, Xue Liu, Shaoqing Liu, Huize Shao, Xueping Liu, Zhe Xiao, Jianwen Liu
Summary: The authors designed and synthesized Mn selectively doped CoP hollow microspheres to trap LiPSs and enhance Li-S reaction kinetics in lithium-sulfur batteries. The selective doping of Mn improved the adsorption capacity for LiPSs and inhibited the shuttle effect, while also accelerating the reduction kinetics of sulfur redox conversion. The optimal electrode exhibited excellent cycling stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tao Wang, Liangliang Zhang, Jiaming Gu, Jingwei Liu, Zhilin Liu, Yu Xie, Hanyu Liu, Ling Zhang, Zhen-An Qiao
Summary: Synthetic polymer-derived hollow carbon spheres have practical value in many fields, and the synthesis of suitable polymer precursors is crucial. Exploring new polymer precursors and constructing refined hollow structures are important for synthetic methodology and novel carbon materials. In this study, Schiff base polymer (SBP) colloid spheres with refined hollow structures were synthesized using a tandem gradient growth and confined polymerization process.
Article
Chemistry, Analytical
M. Shahbakhsh, H. Saravani, S. Narouie, Z. Hashemzaei
Summary: This study synthesized poly(hydroquinone-oxovanadium (IV)) porous hollow microspheres and used them as a modifier for voltammetric sensing of phenol, showing interesting electrocatalytic activity. The method displayed good linearity, low detection limit, and applicability for real sample analysis. Statistical comparison with standard HPLC method showed no significant difference between the two.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Physical
Duojie Gengzang, Wanjun Chen, Qiong Chen, Guoheng Zhang, Xiujia An, Cairang Limao
Summary: Pure and 4 wt% Ag-doped ZnSn(OH)6 samples were prepared and characterized by XRD, XPS, SEM, and TEM. The Ag-doped ZnSn(OH)6 exhibited a hollow microspheres with a porous structure. Moreover, the sensor based on Ag-doped ZnSn(OH)6 showed a higher sensing response (49.12) and faster response/recovery capability (16/10 s) to 100 ppm formaldehyde compared to pure ZnSn(OH)6 (24.78) at 200 degrees C. The enhanced performance was attributed to the hollow spherical structure, which provided a higher specific surface area and more active sites. Additionally, Ag doping facilitated gas molecules dissociation, promoting the reactions between the sensing material and gas molecules. Thus, Ag-doped ZnSn(OH)6 is a more suitable and promising candidate material for gas sensors in formaldehyde detection.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Jiangtao Liu, Shaohui Zhang, Baosheng Liu, Xuning Feng, Zhenbo Wang
Summary: A supercapacitor electrode material with good hollow structure and uniform surface morphology was successfully synthesized by using hollow carbon spheres prepared via high temperature sintering of dopamine hydrochloride and subsequent coating with MnO2. The prepared material exhibited good specific capacitance and cycle stability, making it potentially useful for high-performance supercapacitors.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Guozhen Zhu, Qihao Yang, Zhen Yang, Renchao Che
Summary: Porous hollow Co3O4 microspheres wrapped with graphene oxide were synthesized by a step solvothermal method and subsequent heat treatment. This design greatly increased the specific surface area and achieved sufficient contact between the microspheres and electrolyte, resulting in a high charge specific capacity of 888.59 mA h g-1. The porous and hollow structure provided stress relief during charging/discharging, leading to excellent cycling stability and a specific capacity of 465.75 mA h g-1 at the 1000th cycle. Furthermore, the tight package of graphene oxide greatly improved the conductivity of Co3O4 microspheres, enabling superior rate performance of 280.99 mA h g-1 at 10 C.
Article
Nanoscience & Nanotechnology
Licheng Zhou, Zhixiang Hu, Hua-Yao Li, Jingyao Liu, Yi Zeng, Jingsong Wang, Yifu Huang, Ling Miao, Guangzu Zhang, Yongan Huang, Jianjun Jiang, Shenglin Jiang, Huan Liu
Summary: The template-free method proposed in this study for constructing tin oxide (SnO2) porous hollow microspheres (PHMs) relies on the competition between solvent evaporation rate and phase separation dynamics of colloidal SnO2 quantum wires. The resulting SnO2 PHMs exhibit desirable structural stability and can be directly deposited onto device substrates for the fabrication of semiconductor gas sensors, simplifying the process and enhancing gas-sensing capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Lichun Xue, Yueqing Li, Wentao Lin, Feiming Chen, Guichan Chen, Dengjie Chen
Summary: Hollow porous V2O5 microspheres were obtained by a facile solvothermal method and exhibited good capacity, rate capability, and stability in lithium-ion batteries. The study also described the variation of charge-transfer and bulk resistances in different charge/discharge states and suggested the broad application of the prepared microspheres and electrode kinetics in developing efficient electrodes for LIBs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Stanko Kramer, Peter Krajnc
Summary: Hierarchically porous spherical particles were successfully prepared using high internal phase water-in-oil-in-water double emulsions through visible-light photopolymerization. The thiol-to-acrylate ratio was found to affect the microsphere diameter and degradation speed, with increased acrylate content leading to slower degradation. Functionalization with allylamine and adsorption capabilities of the microspheres were also demonstrated in the study.
Article
Polymer Science
Aurelie Ohana Benaddi, Orit Cohen, Krzysztof Matyjaszewski, Michael S. Silverstein
Summary: PolyHIPEs are porous polymers synthesized within high internal phase emulsions, with their properties being influenced by polymerization mechanism, initiator solubility, RAFT agent to initiator ratio, and crosslinking comonomer content. The use of surface-active RAFT agent can significantly enhance the structure of PolyHIPE. Substituting RAFT for FRP can lead to significant changes in thermal, mechanical, and uptake behaviors.
Article
Nanoscience & Nanotechnology
Feng Li, Zhicheng Li, Chenglu Tang, Lijun Zhang, Qiyang Tan, Chao Chen, MingXing Zhang, Kechao Zhou
Summary: Considerable research has been done on laser powder bed fusion (LPBF) to address the high crack susceptibility of aluminum alloys. This study presents a novel component with superior processability, refined microstructure, and high strength, achieved through composition adjustment. By adding 4.4 wt% Mg and 3.1 wt% Si, a relative density of 99.6% and crack elimination were achieved. The fabricated alloy exhibited granular Mg2Si and rod-shaped Si phases, and had an ultimate tensile strength of 460 MPa, yield strength of 385 MPa, and elongation of 3.2%. The study provides guidance for defects suppression and composition design in additively manufactured high-strength Al-Mg-Si alloys and other aluminum alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Ziwei Yang, Chao Chen, Dan Li, Yiyou Wu, Zhaowen Geng, Vladimir Konakov, Kechao Zhou
Summary: In this study, a high-strength and heat-resistant Al-Ce-Sc-Zr alloy was designed and fabricated by additive manufacturing. The as-built alloy exhibits excellent strength and ductility, with an ultimate tensile strength of 445 MPa, a yield strength of 344 MPa, and an elongation of 10%. Even at 300 degrees C, the alloy still maintains a superior tensile yield strength of 233 MPa, surpassing other high-temperature aluminum alloys reported previously. The outstanding performance is mainly attributed to the formation of fine, homogeneous, and coarsening-resistant Al11Ce3 intermetallic nanoparticles during the rapid solidification process, as well as the presence of coherent Al3(Sc, Zr) nano-precipitates and interfacial segregation at the interface of intermetallic nanoparticles during high temperature exposure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Shuyue Wu, Siyuan Lin, Zhiqiang Shi, De'en Guo, Han Huang, Xuefan Zhou, Dou Zhang, Kechao Zhou, Wenhao Zhang, Yue Hu, Conghua Zhou
Summary: Polyvinyl pyrrolidone (PVP) is doped into the growth process of halide perovskite, and it interacts with PbI2 and organic salt to inhibit their aggregation and crystallization. The doping of PVP leads to a decrease in crystallite size, surface fluctuation, and roughness, resulting in a compact and uniform perovskite film. The power conversion efficiency of perovskite solar cells is improved due to the confinement effect, which also enhances the thermal stability of the film and device.
Article
Chemistry, Physical
Qiong Liu, Faqi Zhan, Xiaogang Luo, Qiuyan Yi, Zhida Xiao, Di Zhai, Jingxiang Huang, Yan Zhang, Hang Luo, Dou Zhang, Chris R. Bowen
Summary: By combining experimental and modeling techniques, this paper reports on the unique potential of CaBi2Nb2O9 (CBN) platelets, which can couple both piezo- and photo- multi-field effects to overcome the challenges of traditional semiconductor photocatalysts and achieve high-efficiency hydrogen production and dye degradation.
Article
Nanoscience & Nanotechnology
Muhammad Habib, Xuefan Zhou, Lin Tang, Guoliang Xue, Attaur Rahman, Fazli Akram, Dou Zhang
Summary: A facile approach of donor doping strategy is adopted in this work to achieve a high Curie temperature (T-C) of 450 degrees C and outstanding piezoelectric coefficients (d(33)) of 422-436 pC N-1 using Yb3+, Y3+, Sm3+, and Nd3+ as dopants. The fabricated lead-free ceramics exhibit thermally-stable and outstanding piezoelectric strain performance with small strain hysteresis, making them highly desirable for sensor and actuator applications.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Haiyan Chen, Lei Liu, Zhongna Yan, Xi Yuan, Hang Luo, Dou Zhang
Summary: A novel supercapacitor, HAHx, is designed to improve the breakdown strength (Eb) by optimizing the Al2O3 film thickness. Low-temperature annealing enhances the polarization difference (P-m-P-r), resulting in large Eb and P-m-P-r values, as well as high efficiency and reliable endurance. This work provides a feasible pathway to improve the polarization difference and breakdown strength of HfO2-based films.
Article
Crystallography
Miao Jia, Qianqian Xu, Di Zhai, Mingyang Yan, Shumiao Jiang, Minxuan Tang, Dou Zhang, Wei Zhu, Yan Zhang
Summary: Pipeline leakage causes significant safety and economic concerns, highlighting the need for high-performance and durable sensors to improve monitoring accuracy and prevent financial losses. This study demonstrated the effectiveness of mica-based flexible PZT sensors in detecting airflow with high sensitivity and linearity. In the event of a pipeline leak, these sensors exhibited rapid response times and provided valuable information for locating the source of the leakage.
Article
Chemistry, Physical
Siyuan Lin, Shuyue Wu, De'en Guo, Han Huang, Xuefan Zhou, Dou Zhang, Kechao Zhou, Wenhao Zhang, Yue Hu, Yongli Gao, Conghua Zhou
Summary: Blending polyacrylic acid with organic salt can regulate the crystallization process and slow down the reaction rate between organic salt and PbI2, improving the crystallization of perovskite. The addition of polyacrylic acid increases the crystallite size and grain size of perovskite. By reducing trap density and charge recombination, the charge carrier lifetime in perovskite film and devices is prolonged, leading to an increase in power conversion efficiency of the device.
Article
Materials Science, Multidisciplinary
Mingyang Yan, Huimin Li, Shengwen Liu, Zhida Xiao, Xi Yuan, Di Zhai, Kechao Zhou, Chris R. Bowen, Yan Zhang, Dou Zhang
Summary: This study investigates the effect of BCZT NW content on the dielectric, ferroelectric, and piezoelectric properties of flexible PVDF-TrFE composite films. It was found that the composite film with 15 wt % BCZT NWs exhibited the highest energy harvesting figure of merit of 5.3 x 10(-12) m(2)/N. A patterned piezoelectric nanogenerator was fabricated using interdigitalelectrodes combined with the composite, which could produce an open-circuit output voltage of 17 V and a maximum output power density of 5.6 mu W/cm(2). This research provides opportunities for optimizing and fabricating piezoelectric materials for energy-harvesting and sensing applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Hong Yang, Lian-zhong Zhao, Yan Zhang, Hang Luo, Ri-chu Wang, Dou Zhang, Xiao-feng Wang
Summary: In this study, direct ink writing (DIW) was used to prepare polyvinylidene fluoride (PVDF) film. The rheological properties of inks were studied, and the influence of process parameters on material properties was investigated using various testing methods. The results showed that the PVDF film prepared with specific printing parameters had a significantly improved β-phase content compared to film prepared by solution casting. The high β-phase content enhanced the electrical properties and piezoelectric performance of the PVDF film, making it suitable for small deformation monitoring.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Chemistry, Physical
Siyuan Lin, Zhenxing Fang, Jiao Ma, De'en Guo, Xiaohan Yu, Haipeng Xie, Mei Fang, Dou Zhang, Kechao Zhou, Yongli Gao, Conghua Zhou
Summary: In this article, an in-situ healing strategy is proposed to strengthen the perovskite/carbon interface by doping octylammonium iodide into the carbon paste. This strategy accelerates charge extraction and reduces recombination, leading to an upgraded power conversion efficiency of perovskite solar cells.
Article
Materials Science, Multidisciplinary
Yuan Liu, Hang Luo, Hao Xiong, Xuefan Zhou, Xun Jiang, Xiaona Li, Bo Peng, Yuting Wan, Xi Yuan, Dou Zhang
Summary: In order to improve the high-temperature energy storage performance of polyetherimide (PEI) nanocomposites, 0.55Bi(0.5)Na(0.5)TiO(3)-0.45(Bi0.2Sr0.7)TiO(3) (BNT-BST) nanofibers with optimized diameter were synthesized and utilized to reduce the dielectric loss of Bi0.5Na0.5TiO3. The introduction of nanofibers significantly reduced leakage current and charge migration, leading to enhanced energy storage properties. The 3% BNT-BST/PEI nanocomposite achieved an excellent discharge energy density of 10.37 J/cm(3) at 560 kV/mm, which is 65.4% higher than that of PEI.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xiaogang Luo, Zhongna Yan, Hang Luo, Xuefan Zhou, Boyuan Li, Man Zhang, Dou Zhang
Summary: This study reports significantly improved piezoelectric properties and DC resistivity of CaBi2Nb2O9 ceramics through Na+ and Sm3+ co-doping. An optimum composition of Ca-0.95(Na, Sm)(0.025)Bi2Nb2O9 is obtained, which possesses a high Curie point, a high piezoelectric coefficient, and a low DC electrical resistivity at high temperatures. Furthermore, the piezoelectric coefficient maintains about 90% of the initial value after annealing at 900 degrees C for 2 h.
ADVANCED POWDER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuan Liu, Hang Luo, Fan Wang, Zhida Xiao, Chenchen Yang, Xiaona Li, Bo Peng, Yuting Wan, Jian Yin, Dou Zhang
Summary: Dielectric capacitors have great potential in pulse power devices due to their high power density. However, achieving both high discharge energy density and energy efficiency has been a challenge. In this study, a new all-organic multilayer composite with gradient transition layers was designed, resulting in a discharge energy density of 12.70 J cm(-3) and an energy efficiency of 74.6% at 510 kV mm(-1), which were significantly higher than those of other materials. The composite also exhibited excellent cycling stability and a fast charge-discharge rate.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Biomaterials
Mohammadreza Kasravi, Alireza Yaghoobi, Tahereh Tayebi, Mahsa Hojabri, Abdolkarim Talebi Taheri, Fatemeh Shirzad, Bahram Jambar Nooshin, Radman Mazloomnejad, Armin Ahmadi, Fatemeh A. Tehrani, Ghasem Yazdanpanah, Mohammad Hadi Farjoo, Hassan Niknejad
Summary: As a promising approach in translational medicine, the decellularization of discarded livers to produce bioscaffolds that support recellularization has potential in overcoming the limitations of conventional liver transplantation. In this study, the researchers investigated the use of matrix metalloproteinase (MMP) inhibition to preserve the extracellular matrix (ECM) during liver decellularization. The results demonstrated that the application of an MMP inhibitor significantly improved the preservation of ECM components and mechanical properties of the bioscaffolds, which supported cell viability and function in vitro. The study also confirmed that the MMP inhibition led to the inhibition of MMP2 and MMP9, providing a novel method to enhance ECM preservation during liver decellularization.
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Mohammadsadegh Nadimifar, Weiguang Jin, Clara Coll-Satue, Gizem Bor, Paul Joseph Kempen, Ali Akbar Moosavi-Movahedi, Leticia Hosta-Rigau
Summary: This study presents a metal-phenolic self-assembly approach that can prepare nanoparticles fully made of hemoglobin. The nanoparticles exhibit good oxygen binding and releasing capabilities.
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Jyoti Kumari, Roel Hammink, Jochem Baaij, Frank A. D. T. G. Wagener, Paul H. J. Kouwer
Summary: Fibrosis is the formation of fibrous connective tissue in response to injury, leading to organ dysfunction. A novel hybrid hydrogel combining synthetic polyisocyanide with hyaluronic acid has been developed, showing strong antifibrotic properties.
BIOMATERIALS ADVANCES
(2024)
Letter
Materials Science, Biomaterials
Melissa Machado Rodrigues, Cristian Padilha Fontoura, Charlene Silvestrin Celi Garcia, Sandro Tomaz Martins, Joao Antonio Pegas Henriques, Carlos Alejandro Figueroa, Mariana Roesch Ely, Cesar Aguzzoli
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Jessica Polak, David Sachs, Nino Scherrer, Adrian Suess, Huan Liu, Mitchell Levesque, Sabine Werner, Edoardo Mazza, Gaetana Restivo, Mirko Meboldt, Costanza Giampietro
Summary: Human skin equivalents (HSEs) play a crucial role in tissue engineering. This study introduces a 3D-printed culture insert to apply a static radial constraint on HSEs and examines its effects on tissue characteristics. The results show that the diameter of the culture insert significantly influences tissue contraction, fibroblast and matrix organization, keratinocyte differentiation, epidermal stratification, and basement membrane formation. This study provides important insights for the design of skin tissue engineering.
BIOMATERIALS ADVANCES
(2024)
Review
Materials Science, Biomaterials
Shiliang Chen, Tianming Du, Hanbing Zhang, Jing Qi, Yanping Zhang, Yongliang Mu, Aike Qiao
Summary: This paper reviewed the primary methods for improving the overall properties of biodegradable zinc stents. It discussed the mechanical properties, degradation behavior, and biocompatibility of various improvement strategies. Alloying was found to be the most common, simple, and effective method for improving mechanical properties. Deformation processing and surface modification further improved the mechanical properties and biological activity of zinc alloys. Meanwhile, structural design could endow stents with special properties. Manufacturing zinc alloys with excellent properties and exploring their interaction mechanism with the human body are areas for future research.
BIOMATERIALS ADVANCES
(2024)
