JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Weihao Liu,Xu Jiang,Yan Yang,Lei Guo,Haoyang Wang,Lu Shao
Constructing high-performance mixed matrix membranes (MMMs) with highly permeable polymers of intrinsic microporosity (PIMs) and metal-organic frameworks (MOFs) faces critical challenge of poor interfacial compatibility between MOF fillers and the polymer matrix and difficulty in maintaining a defect-free interface at high filler loading (over 30 %). In this study, a Bi-HHTP loading as high as 50 wt% and uniform dispersion with excellent interfacial integrity is achieved in our high-performance MMMs through the elaborate design of multiple synergistic interfacial interactions, including hydrogen bonding between the phenolic hydroxyl groups of the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand in the Bi-HHTP filler and the cyano groups in the PIM-1 matrix and π-π stacking between their benzene ring structures. The optimized MMM exhibits a remarkable CO 2 permeability up to 4021 Barrer with an ideal CO 2 /N 2 selectivity of 42.1 which substantially outperforms the neat PIM-1 membrane and exceeds the 2019 upper bound. The enhanced separation performance of the MMMs stems mainly from the significant increase in CO 2 solubility selectivity with Bi-HHTP loading, which benefits from the inherent CO 2 affinity of Bi-HHTP and the effective suppression of N 2 dissolution by the rigidification of PIM-1 chain segments induced by strong interfacial interactions. Most importantly, the resulted high-loading MMMs exhibited remarkable structural stability, showing strong resistance to both physical aging and CO 2 -induced plasticization. This strategy overcomes the loading bottlenecks of state-of-the-art MMMs and contributes advanced membrane materials for efficient CO 2 capture.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Zilong Meng,Shuo Song,Xinyu Zhang,Kaidi Zhang,Kelong Li,Weifeng Kong,Qianwei Liang,Jianrong Chen
Antibiotic residues like tetracycline hydrochloride (TCH) in water threaten ecosystems and human health, yet traditional photocatalysts struggle with low visible-light utilization and rapid photogenerated carriers recombination. This study presents a Bi/CAU-17 heterojunction designed as a photo-antenna/reaction center system, where metallic Bi acts as the light-harvesting antenna via the surface plasmon resonance (SPR) effect, and the CAU-17 metal-organic framework serves as the reaction center. The Bi/CAU-17 composite is synthesized via an in-situ reduction method, where Bi is generated on the surface of CAU-17, The research aims to elucidate the mechanisms by which the SPR effect influences the separation of photogenerated electron-hole pairs and improves the degradation efficiency of TCH. Under visible light, the optimized Bi/CAU-17 achieves 99.6 % TCH degradation within 60 min, with the pseudo-first-order rate constant ( k ) constant 9.45 times higher than pristine CAU-17. Mechanistic studies reveal that the SPR-enhanced heterojunction promotes the production of ⋅O₂⁻ as the dominant reactive species. Ecotoxicity assays (fish, daphnid, green algae and rat) confirm mineralization into non-toxic end products. This study also evaluates the ecotoxicity of degradation processes, confirming safe mineralization of intermediates into non-toxic end products. Notably, the practical applicability of the Bi/CAU-17 catalyst in real water sources maintain high degradation efficiency under sunlight irradiation. By integrating the photo-antenna concept with MOF-based reaction centers, this work demonstrates a scalable strategy for developing efficient plasmonic photocatalysts, providing valuable insights into the design of efficient photocatalyst for environmental remediation, particularly in the efficient degradation of antibiotic pollutants.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Xue Xiao,Qiuhui Zhu,Jiapeng Hu,Yin Shen,Yu Huang,Yuanhao Wang,Chuanyi Wang
Photocatalysis is appealing in removing trace NO, but its efficacy is often deteriorated by H 2 O, which is ubiquitous in environment, and how to resolve this issue and elucidate the underlying mechanisms at the molecular-level are challenging. Herein, we report a full-spectrum Bi/Bi 4 Ti 3 O 12 catalyst modified with Bi-O vacancy associates via a steam-assisted chemical reduction process. The optimized structure demonstrates NO removal efficiency of 75.5 %, four times over its counterpart, Bi 4 Ti 3 O 12 (37.9 %). Based on positron annihilation spectra and theoretical studies, the enhanced activity is induced by Bi-O vacancy associates, which not only optimizes the photogenerated carrier dynamical behaviors but lowers the energy barriers for photocatalytic oxidation of NO. Importantly, the photothermal activity of the optimal sample exhibited a decline from 76.7 % (0 % RH) to 71.2 % (100 % RH), whereas its photoactivity (20°C) demonstrated a more pronounced decrease, dropping from 60.1 % (0 % RH) to 41.2 % (100 % RH). Therefore, humidity-resistant performance over the optimal sample is attributed to photothermal effect induced by in-situ precipitated Bi and multiple defects. Furthermore, the results of adsorption and desorption behavior of H 2 O and in situ DRIFTS suggest the photothermal-assisted desorption of surface-bound H 2 O can suppress the interactions of H 2 O and stable bidentate nitrate ( bi -NO 3 ⁻) by hydrogen bonds to generate monodentate nitrate ( m -NO 3 ⁻), thereby hindering the photodecomposition of m -NO 3 ⁻ to NO/NO 2 . This work elucidates the significance of photothermal effect in developing efficient photocatalyst for atmospheric NO purification in humid conditions.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Liwei Sun,Lipeng Wang,Meilin Yin,Shaokun Tang
Direct utilization of low-concentration CO 2 is of importance to mitigate the global warming and reduce energy consumption. Herein, a new bi-functional ionic liquid-grafted material was fabricated for CO 2 /N 2 selectivity and diluted CO 2 cycloaddition reaction. Following the preparation of 1-carboxymethyl-3-methoxy ethyl-imidazolium chloride ([CmMOEim]Cl) containing carboxyl and ether group, MIL-53(Al) was used for directly chemical grafting of the ionic liquid to obtain [CmMOEim]Cl@MIL-53(Al). CO 2 capture capacity of [CmMOEim]Cl@MIL-53(Al) reached up to 70 cm 3 CO 2 /g sorbent at 25 °C and 0.1 MPa, which was higher than that of two individual components. Cyclopropyl carbonate of 97 % yield was obtained at 110 °C, 3 MPa of initial 50 vol% CO 2 /N 2 pressure and 4 h with 2.4 wt% [CmMOEim]Cl@MIL-53(Al)-0.4 under solventless and co-catalyst-free condition. Various terminal cyclocarbonates were synthesized with above 90 % yield. In addition, the heterogeneous catalyst was separated from reaction system by simple centrifugation and the yield of cyclopropyl carbonate was higher than 90 % after 12 cycles owing to the chemical grafting of [CmMOEim]Cl on MIL-53(Al).
✓ 已验证
产品关联
DOI
高影响因子
SPECTROSCOPY LETTERS
·
2025
·
IF 1.6
Yuting Jiang,Deyan Tai,Zhiyuan Xiao,Jinshui Liu
A ratiometric luminescent probe for detecting Bi(III) in water using a functionalized Eu(III) coordination polymer was developed. The raw materials guanosine monophosphate (GMP), Eu(III), and 2,6-pyridine dicarboxylic acid (DPA) were used to synthesize the GMP-Eu-DPA polymer, which contained Eu(III) coordinated with GMP and DPA and gave red emission at a wavelength of 614 nm when excited at a wavelength of 282 nm. Adding Bi(III) decreased the intensity of luminescence of the GMP-Eu-DPA coordination polymer at 614 nm and caused a GMP–Bi complex that strongly luminesced at 373 nm under excitation at 282 nm to form. Under optimal conditions, the luminescence intensity ratio I373/I614 had a good linear relationship with the Bi(III) concentration in the range 1.0–230 μM, and the detection limit was low (0.6 μM). The dual emission reverse rate of change luminescent probe can eliminate environmental influences, making the proposed detection method highly selective. This method has been successfully used to detect Bi(III) in water samples.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Huihui Ding,Huanhuan Wu,Jun Ma,Xiang Li,Shuangshuang Huai,Chengming Zhang,Haibao Zhu,Ping Li,Jie Li,Xiufang Wang,Wenjie Xie
Artificial photosynthesis converting CO 2 into valuable compounds has garnered significant interest. However, the insufficient surface activity sites, weak adsorption capacity of CO 2 and poor electron-hole separation capability hinder CO 2 photoreduction used for practical implementation. Herein, Bi nanoparticles/Bi 24 O 31 Br 10 composite photocatalyst (Bi/BOB) was designed constructed through in-situ reduction of bismuth metal on the surface of ultra-thin Bi 24 O 31 Br 10 nanosheets. Bi/BOB exhibits an excellent ability to reduce CO 2 to CO. The CO 2 reduction rate of the optimized Bi/BOB composite catalyst is 43.07 μmol·g −1 ·h −1 , which is significantly superior to other reported bismuth-based photocatalysts. Experimental characterization and Theoretical simulation calculation reveal that the in-situ reduction of bismuth metal causes significant local lattice distortion and uneven charge distribution, thereby producing a strong interaction between Bi nanoparticles and BOB support. So, it enhances the adsorption and activation of carbon dioxide molecules and reduces the Gibbs free energy barrier during the catalytic reaction. Moreover, the strong interaction helps to enhance the separation of photogenerated charge carriers and stability of catalysts. This study offers research suggestions for the interaction between metal and support to enhance CO 2 reduction.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Bozhi Yang,Xin Min,Xinyu Zhu,Shaorou Ke,Shujie Yang,Ya Chen,Wei Wang,Ruiyu Mi,Yangai Liu,Zhaohui Huang,Xi Kai,Minghao Fang,R. Vasant Kumar
Bismuth is a promising anode material for potassium-ion batteries due to its green, non-toxic and high theoretical capacity (384 mAh g −1 ). However, the sluggish reaction kinetics and excessive volume expansion during cycling limit its practical application. Herein, Bi-induced few-layered graphite frameworks are in situ encapsulated on the surface of Bi nanoparticles, based on the mechanism of graphitization by rearrangement of interstitial carbon atoms during the nucleation process of Bi, while these composite particles are embedded in Bi-doped porous carbon fibers composite. The graphite frameworks can stabilize the structure while serving as an efficient interfacial transfer layer, enabling rapid transport of both potassium ions and electrons. Bi atoms doped into the carbon fiber matrix effectively enhances the potassium ion transport kinetics in amorphous carbon by lowering the migration energy barrier of potassium ions in the carbon layer. The porous structure effectively alleviates the volume expansion of Bi nanoparticles during cycling, which synergistically results in superior high-rate performance and cycling stability. Finally, the capacity can reach 215 mAh g −1 at 10 A g −1 , and a capacity retention rate of 83.8% is achieved after 6000 cycles at 10 A g −1 with an ultra-low decay rate of 0.00278% per cycle.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2025
·Vol. 18
·期 9
·2149
·
IF 3.2
Qingmeng Wang,Xiuli Wang,Xiaomin Cheng,Qianju Cheng,Yi Yang
In the fields of nuclear engineering and solar thermal utilization, low melting point alloys with excellent thermal conductivity and heat transfer performance have attracted extensive research as a new generation of heat transfer fluids, leading to many fundamental and important application issues. This study investigates the high-temperature corrosion behavior of Sn-50Bi-2Zn (wt.%) heat transfer alloy against 304 stainless steel (304), 310S heat-resistant steel (310S), and 20 carbon steel (20C) at 600 °C. Theoretical analysis, based on Fick’s diffusion law, and experimental measurements reveal significant differences in corrosion severity. After 473 h, 20 carbon steel exhibited the lowest corrosion layer thickness (0.07 mm), while 310S suffered the most severe corrosion (1.50 mm), exceeding 304SS (0.83 mm) by 81%. Diffusion coefficients derived from Sn penetration depths further quantified these trends: D310S = 2.51 × 10−7mm2/s (6.8 × higher than 304: 3.7 × 10−8mm2/s) and D20C = 2.87 × 10−10mm2/s (128 × lower than 304SS). XRF analysis confirmed the dissolution of steel components into the molten alloy, with Fe, Cr, and Ni content increasing to 0.382 wt.%, 0.417 wt.%, and 0.694 wt.%, respectively, after 480 h. These results underscore the critical role of Ni content in accelerating Sn/Zn diffusion and pore formation, providing actionable insights for material selection in high-temperature heat transfer systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Bio
·
2025
·
IF 10.2
Shuang Bian,Yangang Zhu,Nanxin Zhao,Yanchen Wang,Zhimou Yang,Jingjing Li
Atherosclerosis (AS) is characterized by lipid overaccumulation and progressive chronic inflammation. Macrophages over-accumulate at plaque sites and promote fibrous cap instability and plaque rupture by participating in lipoprotein uptake and metabolism, inflammatory factor secretion, and the production of enzymes and toxic metabolites. The macrophages accumulating at plaque sites are mainly derived from circulating blood-derived monocytes. Therefore, we designed a peptide 2P with an alkaline phosphatase (ALP) induced self-assembly function and P-selectin targeting function to form a supramolecular bi-antibodies 2P@VLA-4 by coassembling with VLA-4, a CD106 affinity. The dephosphorylation site and efficiency were optimized. 2P@VLA-4 displayed enhanced protein stability and binding ability to inflamed vascular endothelial cells. Through the dual-targeted blocking effect on the adhesion binding site of monocytes, 2P@VLA-4 could significantly reduce the accumulation of monocytes/macrophages at the plaque site, thereby inhibiting the progression of AS. At the same time, modification of peptides with fluorescent molecules enabled specific imaging of plaques. This study focused on the ease of design and functionalization of peptides, to synthesize supramolecular bi-antibodies compound innovatively by enzyme instructed self-assembly (EISA), achieving the significant inhibition of the adhesion and aggregation of monocytes at plaque sites. Coupling with its specific imaging capability, it may provide new approaches for the integrated design of diagnosis and treatment of AS .
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wei Xiang,Lijun Jia,Tingqing Cai,Xuening Han,Mingchao Yang,Huaiwu Zhang
To meet high-power microwave system demands, low-temperature sintered Bi-Li-V substituted YIG ferrites were prepared. The experimental results reveal that Bi 3+ , Li + , and V 5+ occupy the c, a, and d sites of the garnet structure, respectively; the full-site distortion reduces the lattice activation energy, significantly reducing the transformation temperature from perovskite to garnet phase. Additionally, a dual structure with a high percentage of fine grains is observed in the substituted samples, which is an important reason for the large increase in spin-wave linewidth. Isothermal thermodynamic analysis indicates that a sintering mechanism dominated by liquid-phase sintering is conducive to the densification of YIG ferrites. Ferromagnetic resonance linewidth decomposition confirms that, due to the simultaneous increase in the saturation magnetization and the magneto-crystalline anisotropy constant, anisotropy-induced linewidth remains almost unchanged; the dense dual structure leads to a significant reduction in porosity-induced linewidth; ultimately, the ferromagnetic resonance linewidth is greatly reduced.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2019
·
IF 3.973
Meifei Lian,Binbin Sun,Zhiguang Qiao,Kai Zhao,Xiaojun Zhou,Qianqian Zhang,Duohong Zou,Chuanglong He,Xiuyin Zhang
Guided bone regeneration (GBR) membranes have the potential to prevent the invasion of epithelial and connective tissues as well as to maintain a stable space for facilitating the ingrowth of regenerative bone tissue. However, the bioactivity and regeneration potential of currently available membranes still need to be improved. In this study, a novel bi-layered membrane with both osteogenic and antibacterial functions was developed for GBR applications. The loose layer (LL) of the membrane was composed of conjugated electrospun poly (lactic-co-glycolic acid) (PLGA)/gelatin nanofibers incorporating dexamethasone-loaded mesoporous silica nanoparticles ( [email protected] ), while the dense layer (DL) of the membrane consisted of traditionally electrospun PLGA nanofibers loaded with the broad-spectrum antibiotic doxycycline hyclate (DCH). Morphological results showed that the LL ( [email protected] /PLGA/Gel) membrane exhibited a porous and loosely packed structure, which was beneficial for cell adhesion and infiltration, while the DL (DCH/PLGA) membrane remained dense enough to act as a barrier. In vitro drug release tests indicated that both DEX and DCH followed a favorable sustained release profile. The cell viability evaluation suggested that the electrospun membranes possessed good cytocompatibility. Furthermore, in vitro osteogenesis analyses demonstrated that the [email protected] /PLGA/Gel composite membrane possessed an enhanced osteoinductive capacity for rat bone marrow stem cells (BMSCs), which was verified by the increased alkaline phosphatase (ALP) activity, the enhanced calcium deposition, and the upregulated osteocalcin (OCN) expression. In vitro antimicrobial experiments revealed the effective antibacterial potency of the DCH/PLGA membrane. In conclusion, the prepared nanocarrier-incorporated bi-layered composite membrane with combined osteogenic and antibacterial properties may be a promising candidate for GBR application.
✓ 已验证
DOI
PubMed
高影响因子
Processes
·
2025
·Vol. 13
·期 11
·3535
·
IF 2.8
Rongrong Jia,Mingchuan Tang,Mengshan Hou,Haiheng Xing,Yuxing Cai,Jianhao Wu,Xiaozhuo Wang,Jinchao Chen,Lan Li,Chengchao Jin,Zhi Chen,Xiaojing Wang
The development of photocatalyst material is vital for the practical application of environmental purification, solar energy conversion, and chemical production. In this work, a spherical Bi(C6N7O3) photocatalyst is successfully prepared by replacing K+of rod-shaped K3[C6N7O3] with Bi3+ions through the ion exchange method, which demonstrates an improved homogeneous photodegradation efficiency over antibiotics in water compared to pristine K3[C6N7O3]. Under visible light irradiation, Bi(C6N7O3) degraded 81% of tetracycline hydrochloride within 60 min, and the rate constant was 1.8 and 79.1 times greater than K3[C6N7O3] and bulk g-C3N4, respectively. Scavenger experiments revealed that superoxide radicals and holes are the primary active species in the photocatalytic process. This study presents a promising route for designing high-performance visible-light photocatalysts by a simple ion-exchange approach for environmental applications.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）