INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Ran Sun,Lei Lei,Jiamin Ji,Yuan Chen,Weiliang Tian,Fan Yang,Qian Huang
In abdominal wall defect repair, surgical site infection (SSI) remains the primary cause of failure, while complications like visceral adhesions present significant challenges following patch implantation. We designed a Janus multifunctional hydrogel patch (JMP) with antibacterial, anti-inflammatory, and anti-adhesive properties. The patch comprises two distinct layers: a pro-healing layer and an anti-adhesion layer. The pro-healing layer was created by a simple mixture of polyvinyl alcohol (PVA), quaternized chitosan (QCS), and gallic acid (GA), crosslinked to form PVA/QCS/GA (PQG) hydrogels through GA's self-assembly effect and hydrogen bonding. Additionally, the PVA anti-adhesive layer was constructed using a drying-assisted salting method, providing a smooth and dense physical barrier to prevent visceral adhesion while offering essential mechanical support to the abdominal wall. The hydrogel patch demonstrates widely adjustable mechanical properties, exceptional biocompatibility, and potent antimicrobial properties, along with a sustained and stable release of antioxidants. In rat models of skin and abdominal wall defects, the JMP effectively promoted tissue healing by controlling infection, inhibiting inflammation, stimulating neovascularization, and successfully preventing the formation of visceral adhesions. These compelling results highlight the JMP's potential to improve the success rate of abdominal wall defect repair and reduce surgical complications.
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PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 12
·e7696
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IF 3.7
Xueze Wang,Huawei Zhou,Xianxi Zhang
Bi-based organic halides have attracted widespread attention as potential substitutes for lead-based organic halide perovskites and have been explored and applied in many optoelectronic devices. The rational design of organic Bi-based halides is a popular research topic. In this work, we used benzylammonium (BA) cations to synthesize BA 3 Bi 2 I 9 (BBI) perovskite material and FA 3 Bi 2 I 9 (FBI, FA [formamidinium]) as control. We observe that the benzene rings in BA cations overlap with each other due to the benzene rings Π-Π conjugation in the crystal structure of BBI, which exhibits large interplanar spacing due to large BA ions. BBI has preferential orientation along the (020) crystal plane. Due to conjugation, scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) mapping images indicate that the surface of the BBI thin film is smoother and more uniform than that of the FBI thin film. We fabricated the device by growing thin films of BBI and FBI on ITO interdigital electrodes. The photodetector based on BBI SC exhibits stability and regularity with turning on/off of the light at different intensities (10, 20, 30, and 40 W m −2 ) and wavelengths (386, 397, 405, and 433 nm). The ultraviolet–visible (UV–vis) absorption and reflection spectrum analysis shows that BBI has a slightly wider bandgap than FBI. This study can provide some ideas for the design Π-Π conjugation in organic metal halides.
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高影响因子
CERAMICS INTERNATIONAL
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2025
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IF 5.6
Chang Liu,Yuhao Kong,Jianhong Zhang,Chongguang Lyu,Huifang Ma
Dielectric capacitors with high power density, cost-effectiveness, and harsh environmental working abilities have gained considerable research attention. Dielectric materials are key components of dielectric capacitors and directly influence their operational performance. Among others, high-entropy perovskites are emerging as attractive candidates for energy storage materials owing to their exceptional performance driven by the high-entropy effect. Here, a high-entropy (1- x )(Bi 0.4 Na 0.2 K 0.2 Ba 0.2 )TiO 3 - x Bi(Zn 2/3 Ta 1/3 )O 3 system for energy storage devices was designed. A systematic study was conducted to investigate the ferroelectric and dielectric properties of BNKBT-BZT high-entropy ceramics (HECs). The resultant sample exhibits strong relaxor properties and exceptional energy storage properties, with a high recoverable energy storage density ( W rec ) of 4.11 J/cm³ and an energy storage efficiency ( η ) of 84 % under an electric field of 260 kV/cm. More interestingly, the BNKBT-15BZT HECs also display outstanding thermal and frequency stability. These findings suggest that the resultant BNKBT-15BZT HECs are highly promising for applications in dielectric energy storage within low-to-moderate electric field ranges.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
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IF 2.7
Wei Du,Min Li,Qiong Liu,Rong Chen
The electrocatalytic carbon dioxide reduction reaction (CO2RR) is considered as a promising approach for simultaneous CO2 treatment and production of value-added chemicals. Bismuth has been demonstrated as a fascinating electrocatalyst for selective conversion of CO2 to HCOOH. In this study, we comprehensively investigated the effects of size, morphology, and carbon supports on the CO2RR performance of Bi catalysts to enhance their electrocatalytic CO2RR activity and HCOOH selectivity. Specifically, Bi nanospheres with varying sizes were synthesized by adjusting the amount of polyvinylpyrrolidone (PVP), achieving similar selectivity for HCOOH but increasing current density with decreasing size. Bi nanoplates and Bi nanoflowers were also prepared through the reduction of BiOCl precursors, with Bi nanoflowers demonstrating a superior morphology compared to other Bi nanocrystals while achieving a HCOOH faradaic efficiency (FEHCOOH) of 95% at −1.6 V vs. SCE and excellent durability over 12 hours. The predominance of *HCOO intermediates in the in situ ATR-SEIRA spectra indicates that during the CO2RR, Bi nanoflowers primarily followed the pathway leading to HCOOH production. Furthermore, incorporation of Ketjenblack into the synthesis process resulted in carbon-supported Bi catalysts, which exhibited approximately 20% enhancement in FEHCOOH within a wide potential range from −1.3 V to −1.8 V vs. SCE due to an improved separation effect and electron transfer capacity provided by carbon materials.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
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IF 4.2
Fanhua Yu,Shaojie Hong,Bin Guo,Xiangqian Ren,Xingfu Zhou
Ozone water is widely used in disinfection area and wastewater treatment due to its strong oxidation. Recent studies have found that Ti/SnO 2 -Sb-Ni (NATO) anode has higher O 3 generation efficiency due to its higher oxygen evolution potential. In this paper, TiO 2 nanotubes (TiO 2 -NTs) were prepared by anodic oxidation method as the basic substrate material for the Ti/SnO 2 -Sb-Ni electrode, and SnO 2 -Sb-Bi was introduced as the intermediate layer to investigate the electro-synthesis of ozonated water. Studies show that the modification of the TiO 2 -NTs substrate provides a larger specific surface area for the reaction and accelerates the transfer of electrons from the oxide layer to the substrate. The introduction of the SnO 2 -Sb-Bi intermediate layer effectively delays the electrode deactivation and also enhances the electron transport. When the Ti/TiO 2 NTs/SnO 2 -Sb-Bi/NATO electrode was used and electrolyzed for 15 min, the ozone water concentration reached 13.15 mg L −1 , about twice as much as the unmodified electrode. The effects of current density and the coating numbers of active layers on the electrosynthesis of the ozonated water were also investigated. Finally, the application of ozonated water in the decolorization of organic dye wastewater was investigated based on its strong oxidation property, the degradation rate of 40 ppm methylene blue reached 94.5 % and the COD removal rate reached 72.9 % in 30 min. In addition, the cell voltage remained constant during decoloration, indicating the good stability of the electrode. This study also opens a door to the rapid electrochemically decoloration of wastewater and sterilization area by using electrochemically obtainable ozone water.
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高影响因子
COMPOSITE INTERFACES
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2025
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IF 2.4
Yan Sun,Maryam Mudasir,Ye Qian
The Ultra-High Molecular Weight Polyethylene (UHMWPE) fibers are significantly considered for Fiber-Reinforced Cementitious Composites (FRCC) development due to their excellent tensile strength and elastic modulus. However, due to the hydrophobic nature of the fibers, strong fiber-matrix interfacial bonding is still challenging. Mussel-inspired polydopamine coating has gained attention for its ability to preserve the fiber’s tensile strength while also serving as a platform for bi-layer applications. Polymerization through auto-oxidation of dopamine monomer proceeds very slowly, taking 12 to 24 h minimum for an efficient film formation. This study suggests an expeditious and feasible strategy to convert hydrophobic UHMWPE fibers into hydrophilic ones using catalytic polydopamine deposition mechanism. The reaction time was reduced by 75–88% while still achieving the desired surface properties. Following, a nanoclay coating procedure was developed for modified fibers. Water contact angle, SEM-EDX, XPS, and FTIR analysis were conducted, revealing enhanced wettability, varied surface morphology, and the presence of new functional groups in the modified fibers, respectively. The FRCC using coated fibers showed improved mechanical performance under tensile loads in terms of first-cracking strength, ultimate tensile strength, and strain capacity compared to uncoated fibers FRCC. Thus, quick strategies were explored for PDA and nanoclay coated surfaces considering strong fiber-matrix bridging in FRCC.
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高影响因子
Materials Today Energy
·
2025
·
IF 8.6
Binghong Wu,Xinru Wu,Dong-Hau Kuo,Xiao Tang,Xin Mao,Baoqian Yang,Zhengjie Su,Pengkun Zhang,Longyan Chen,Minhao Liu,Jinguo Lin,Xiaoyun Chen
To reveal the role of bi-vacancy defects and heterovalent states in oxysulfide catalysts for enhancing the photocatalytic hydrogen evolution reaction (PHER), we demonstrate a Br/W co-doped Zn(O,S) catalyst (labeled as Br/W-ZnOS) featuring abundant anionic oxygen vacancies (V O )/cationic zinc vacancies (V Zn ) bi-defects and heterovalent W 5+ /W 6+ states via a facile hydrolysis method. The co-doping of Br and W induces lattice distortions that enable neighboring atoms to leave the lattice, creating surfaces enriched with anionic V O and cationic V Zn defects. The synergistic effect between dual defects forms an efficient electron-hole separation system, enhancing the efficiency of electron-hole pair separation. Density functional theory calculation (DFT) demonstrates that the combination of Br/W co-doping and vacancies significantly reduces the water dissociation barrier and optimizes the surface ∗H generation rate of the photocatalyst. Thus, Br/W-ZnOS exhibits a PHER rate of 3415.7 μmol h −1 , which is 12.5 times higher than the undoped Zn(O,S) catalyst, and achieves an apparent quantum yield (AQY) of 15.41 % at 365 nm, while maintaining good stability with a PHER activity of 3288.1 μmol h −1 after five repeated cycles. This research provides a promising strategy for designing oxysulfide catalysts with synergistically engineered defects for efficient PHER.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2025
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IF 9.8
Xin Qu,Ce Wang,Yuanyu Zhao,Jinqiu Ye,Ping Hu,Rui Zhao,Yong Liu
Human activities, ranging from medical applications to space exploration, face significant threats from multiband electromagnetic radiation. This challenge is particularly pronounced in the complex radiation environments of space. There is an urgent need for high-efficiency, stable broadband electromagnetic shielding materials to safeguard human health and equipment safety. Herein, a Bi-modified W 18 O 49 /MWCNTs/PAN hybrid nanofiber membrane is successfully prepared by electrospinning and post-treatment. Relying on the synergistic effect of Bi, W 18 O 49 , MWCNTs, and porous structures, excellent broadband radiation protection capability is achieved: (i) Low near-infrared-visible-light (NIR-VIS) transmittance (0.62 %); (ii) Ultraviolet (UV) transmittance of only 0.012 % and UPF value as high as 2000; (iii) Mass attenuation coefficient up to 16.18 cm 2 g −1 and attenuation ratio of 85.74 % (thickness: 4 mm) at 33 keV X-ray energy. Furthermore, porous structure and high specific surface area give the membrane ultralight density (0.36 g cm −3 ), flexibility, and outstanding air permeability (8.5 kg m −2 d −1 ). Even after 2000 bends, it still maintains stable structure and performance. Meanwhile, low thermal conductivity (42.2 mW m −1 K −1 ) and superior temperature resistance (300 °C) enable it to adapt to complex and changing environments. These advantages make the membrane highly promising for radiation protection in medical, industrial, and aerospace applications.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Zelai Cheng,Yulan Jing,Xi Wang,Feng Qiao,Xiuling Yang,Ying Chen,Mingshan Qu,Hua Su
The escalating demand for miniaturized high-frequency circulators in radar and satellite systems necessitates ferrite materials that concurrently possess a high saturation magnetization (4π M s ), a narrow ferromagnetic resonance linewidth ( ΔH ), and a high dielectric constant ( ε r ). In this study, a defect-engineered Bi 1.4 Ca 0.3 Zr 0.3 Y 1.3 Fe 4.6−x In 0.1 O 12−δ garnet ferrite was synthesized, in which synergistic Zr⁴⁺/In³⁺ dual-site doping and controlled Fe-vacancies improved magnetic performance. At optimal Fe-deficiency (x = 0.1), the material achieved a high 4π M s of around 2001 G, enabling C-X band operation. Simultaneously, it attained narrow ferromagnetic resonance linewidth ( ΔH ≈ 112 Oe) through reduced magnetocrystalline anisotropy (| K 1 |) and an enhanced dielectric constant ( ε r ≈ 26.2) via the “rattling” effect that compensated for vacancy-induced polarization loss. A straight-circuit microstrip circulator based on this ferrite ( r 0 = 2.14 mm, r 1 = 7.76 mm) was operated in the bandwidth from 4.23 to 9.85 GHz. It exhibited insertion loss ( S 21 ) better than −0.5 dB and isolation/return loss ( S 11 / S 12 ) below −20 dB. A curved-microstrip redesign further reduced the substrate area to 28.7% of the original while maintaining operation from 4.34 to 9.36 GHz, demonstrating exceptional potential for compact C-X band circulators.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Yunpeng Cao,Xue Zhou,Faming Gao
The investigation of Bi-based metal-organic frameworks (Bi-MOFs) as anode materials has garnered significant attention because of their higher lithium storage capacity. Nevertheless, they are prone to structural collapse when undergoing the process of charging and discharging, resulting in irreversible capacity degradation. In this study, we develop novel Bi-MOF and reduced graphene oxide (RGO) composites named Bi-MOF@RGO-x, where “x” represents the amount of RGO incorporated during the synthesis process. As expected, when used as an anode for LIBs , the Bi-MOF@RGO-15 electrode exhibited an excellent capacity of 400 mAh·g −1 and ultra-long cycling stability of more than 3500 cycles at the current density of 10 A·g −1 (the specific capacity is the same as the second cycle). An interesting Bi-MOF@RGO reconfiguration phenomenon could be observed in that amorphous carbon layers and ultra-small bismuth dots could be obtained after repeated charging/discharging. Meanwhile, the amorphous carbon layers could uniformly wrap around the in-situ deposited bismuth dots to act as a buffer against volume fluctuations during bismuth lithiation and delithiation. The in-situ deposited bismuth dots had a shorter Li + transport path, facilitating faster Li + transport to obtain an excellent rate performance. This reconfiguration did not cause the degradation of battery performance, but on the contrary, was an important reason for obtaining high-performance MOF anodes. This study demonstrates that the reconfiguration of Bi-MOF is a favorable anodic conversion process, providing different insights into studying anodes for MOFs.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Lifeng Jiang,Shuyue Tan,Rongchun Chen,Jingwei Xian,Hongrui Li,Donghu Zhou,Huijun Kang,Zongning Chen,Enyu Guo,Tongmin Wang
Grain boundary (GB) engineering includes grain size and GB segregation. Grain size has been proven to affect the electrical properties of Mg3(Sb, Bi)2 at low temperatures. However, the formation mechanism of GB segregation and what kind of GB segregation is beneficial to the performance are still unclear. Here, the Ga/Bi cosegregation at GBs and Mg segregation within grains optimize the transport of electrons and phonons simultaneously. Ga/Bi cosegregation promotes the formation of Janus-like structures due to the diverse ordering tendencies of liquid Mg3Sb2 and Mg3Bi2 and the absence of a solid solution of Ga/Bi. The Janus-like structure significantly reduces the room-temperature lattice thermal conductivity by introducing diverse microdefects. Meanwhile, a coherent interface between the nano Mg segregation region and the matrix is formed, which reduces the thermal conductivity without affecting the carrier transport. Furthermore, the band structure calculations show that Ga doping introduces the resonance level, increasing the Seebeck coefficient. Finally, the lattice thermal conductivity reaches ∼0.4 W m–1 K–1, and a high average ZT of 1.21 between 323 and ∼773 K is achieved for Mg3.2Y0.02Ga0.03Sb1.5Bi0.5. This work provides guidance for improving the thermoelectric performance via designing cosegregation.
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高影响因子
Journal of Energy Storage
·
2024
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IF 8.9
Weijian Xue,Min Li,Yingqing Zhao,Yifan Deng,Ying Li
The direct reduction of solid Bi 2 O 3 to Bi used for a high-performance anode is studied for the first time. Cyclic voltammetry results indicate that the conversion of solid Bi 2 O 3 is a one-step process. Electrolysis measurements using a solid Bi 2 O 3 cathode were carried out at various experimental conditions. X-ray diffraction (XRD) measurements of the electrolytic samples reveal that the solid Bi 2 O 3 can be completed reduced to Bi. The electrolytic Bi obtained at 2.6 V for 6 h achieves a long and steady cycle, a higher specific capacity than 403.2 mAh g −1 , and a higher capacity retention than 95.5 % cycling for even 4000 cycles, as well as an excellent rate capability. The electrochemical deoxidation approach can provide a green and straightforward pathway for producing high-performance sodium-ion batteries anodes.
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高影响因子
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