Small
·
2025
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IF 12.1
Xuefen Song,Muhammad Ayyob,Panpan Su,Jian Cui,Wenxiu Li,Meng Zhang,Xuemin Zhang,Zhongwei Chen
The acidic electrolyte and highly oxidizing environment of proton exchange membrane water electrolysis (PEMWE) pose significant challenges to the stability of Ru-based anode catalysts and limit their practical applications. In this study, Co-doped RuO 2 nanocrystals are synthesized using a one-step annealing method of Co-exchanged Ru-bpydc derivatives. The catalyst demonstrated excellent oxygen evolution reaction (OER) performance, achieving a low overpotential of 205 mV at 10 mA cm −2 and superior stability, retaining activity for over 1000 h without degradation. Advanced characterization techniques revealed that cobalt doping increases oxygen vacancies and manipulates the reaction pathway by boosting the adsorbate evolution mechanism (AEM) and suppressing the participation of lattice oxygen in OER. Density functional theory (DFT) calculations further confirmed that the electron transfer between Ru and Co site via bridge O in the structure of Ru─O─Co optimized the adsorption energy of oxo-intermediates to promote AEM, thereby boosting stability. In addition, the Co─RuO x catalyst exhibited good performance as an anode in a PEMWE, demonstrating stable operation for over 100 h at a current density of 100 mA cm −2 . This work presents a viable approach to designing highly active and durable OER catalysts, making significant contributions to the advancement of PEMWE technology.
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Lin Ma,Hao Wu,Daheng Liu,Pengjie Zhang,Wei Sun,Xiaohui Liang,Jiewu Cui,Yu Zhang,Dianqing Yu,Fuchun Liu,En-Hou Han
It remains a challenge to develop electromagnetic wave absorbers with wide effective absorbing bandwidth (EAB). In this work, one-dimensional (1D) cobalt-based metal-organic framework (MOF)-derived composites were exploited on whose surfaces are decorated with nanoparticles. The EAB can reach up to 6.7 GHz with the corresponding matching thickness only 2.2 mm, which is far greater than those of most similar composites. The unique 1D rod microstructures possess a large length-to-diameter ratio and can provide a longer conductive path in a relatively small volume, which can reduce the length of electron transmission paths, and thus improve the overall conductivity. The composites contain a large number of cobalt/carbon heterogeneous interfaces, which can enhance the interface polarization phenomenon. Additionally, the impedance matching can be controlled in balance due to the double-component feature of the composites. The successful preparation of the cobalt-based MOF-derived composites with an ultra-wide EAB can significantly improve the upper limit of EAB of similar composites.
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高影响因子
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Song He,Junqing Zhu,Jiayi Tang,Jinfeng Ji,Yajun Huang,Ye Li
Metal-organic frameworks (MOFs) have become a focal point of interest owing to their ability to remove contaminants from wastewater. However, the typical powder form of MOFs is difficult to recover after use, which hinders their practical application. In this research, UiO-66-OH gel was synthesized at room temperature. On this basis, Co was doped into UiO-66-OH gel to obtain a series of Co@U-OH-X composites. The [email protected] exhibited an adsorption capacity for TC that was 5.1 times higher compared to the UiO-66-OH gel. Furthermore, the influence of pH, coexisting ions, humic acid, and original concentration of TC on the adsorption of [email protected] was examined. The composite materials demonstrated an exceptional capacity to adsorb TC (182.31 mg·g -1 ), which surpassed the performance of numerous previously documented adsorbents. The pseudo-second-order kinetic model and the Freundlich isotherm model efficiently accounted for the adsorptive interaction. Thermodynamic adsorption analyses indicated that the interaction occurred spontaneously and accompanied by heat absorption. After four cycles, there was only a 12.7% reduction in the removal rate of TC, which suggested that the composite materials were recyclable. [email protected] showed remarkable adsorption capacity even in settings with minimal TC concentration. The exceptional adsorptive performance, superior recyclability and aqueous stability established Co@U-OH-X composites as a viable adsorbent contender for eliminating TC.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Wei Yang,Qin Zou,Chenxin Wang,Yuankun Ren,Rui Zhang,Mingyue Lin,Xueqi Zhang,Yu Liu,Boyang Wang,Wei Li,Li Jiang,Xiyu Li
Traditional bone repair scaffolds often struggle to meet the demands of complex bone defect regeneration due to insufficient early osteogenic stimulation or osteogenesis. In this study, we proposed a synergistic strategy to combine PHA (PCL/HA) scaffolds with HA-internalized osteoblasts (OHA) and osteonectin (ON), where OHA provides fast calcium and phosphate ion release via lysosomal degradation, and ON facilitates calcium phosphate–collagen binding to jointly enhance the early bone regeneration. This “OHA + ON” dual-pathway synergy helps to overcome the limitations of poor early osteogenesis or insufficient Ca/P ion release. The results demonstrated that the PHA + ON+OHA combination was much superior to PHA or PHA + ON scaffolds in terms of the osteogenic gene expression, osteoblast proliferation and mineralization in vitro , and the osteogenic capability in subcutaneous model and femoral defect model in vivo . These findings suggest that the “OHA + ON” synergistic strategy realizes an early pro-osteogenesis, optimizes the osteogenic process, and elevates the new bone quality, offering a viable approach for future clinical repair of complex bone defects.
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高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.4
Chen Jianjun,Wu Haowen,Ru Lei,Bai Hailong,Han Mingjie,Feng Hua,Men Jiying
In this work, surface molecularly imprinted polymers Co-MOF/CNT@MIPs were prepared based on metal-organic framework (MOF) and muti-walled carbon nanotubes (MWCNTs) as matrix, and norfloxacin (NOR) as template molecular. The structural characteristics of molecular imprinted polymer Co-MOF/CNT@MIP were confirmed by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). The adsorption and selective recognition performances of Co-MOF/CNT@MIP for NOR were also investigated. The adsorption of Co-MOF/CNT@MIP for NOR reaches equilibrium at 300 min, and pseudo-second-order (PSO) model is more fit for adsorption kinetic. The adsorption capacity of Co-MOF/CNT@MIP for NOR reaches 78.6 mg/g with 1.5 mg/mL at 25℃ via the hydrogen bond interaction and “lock-key” imprinted cavities, and the D-R model is fit for adsorption isotherm. The adsorption amount decreases as increasing the temperature, which is an exothermic and spontaneous process. The imprinted polymer exhibits an excellent imprinted factor of 2.08 and high selective factor above 1.93, and it is satisfactory reusability for five cycles.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xianzhong Shi,Rutao Sun,Chunyuan Hou,Baochen Wang
Zero-dimensional (0D) perovskites have emerged as a promising class of luminescent materials due to their strong carrier confinement and efficient self-trapped exciton (STE) emission. However, achieving high emission efficiency and tailored photoluminescence (PL) through rational dopant engineering remains a challenge. In this work, we demonstrate the successful synthesis of phase-pure, 0D Ce 3+ /Sb 3+ co-doped K 3 InCl 6 microcrystals, which retain the intrinsic [InCl 6 ] 3- octahedral structure. We unveil the distinct yet synergistic roles of the co-dopants: Sb 3+ acts not only as an efficient STE emitter but also as a structural modulator, while Ce 3+ functions as an effective ultraviolet (UV) absorber and energy sensitizer. Crucially, we observe anti-correlated changes in the exciton binding energies upon co-doping: a decrease for Ce 3+ and a significant increase for Sb 3+ . This compelling evidence directly confirms the occurrence of efficient energy transfer from Ce 3+ to Sb 3+ , which is further supported by the concomitant suppression of Ce 3+ emission and a remarkable enhancement of the characteristic Sb 3+ green emission centered at 520 nm. By optimizing the dopant synergy effect, we achieve a substantial boost in the overall green luminescence. This work not only provides fundamental insights into the dopant interactions and energy transfer mechanisms within 0D perovskite systems but also establishes a practical and effective strategy for the development of novel and high-performance luminescent metal halide perovskite materials.
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高影响因子
DESALINATION
·
2026
·
IF 9.8
Rui Gao,Hui Shi,Zhiwei Qiu,Ruobin Dai,Xubiao Luo,Zhiwei Wang
With the rapid retirement of lithium-ion batteries (LIBs), efficiently and environmentally friendly recovering Co 2+ and Li + from LIBs acidic leachates is crucial for meeting the demand for strategic metals. Nanofiltration (NF) membranes, featuring the potential of selective separation of ions, has shown remarkable promise in LIBs acidic leachate recycling. In this work, PDA@PEI surface deposition was employed to endow commercial NF membranes with surface charge and pore size regulation. The modified membrane exhibited a Co 2+ /Li + separation factor (SF) of 70.8 in LIBs acidic leachates—far exceeding the intrinsic performance of conventional negatively charged NF membranes (SF = 11.5). DSPM-DE modeling demonstrated that membrane modification intensifies Donnan exclusion by enriching surface positive charge, while simultaneous pore-size reduction reinforces steric screening, synergistically enhancing Co 2+ /Li + selectivity. Notably, the modified membrane achieved permeate quality comparable to that of a conventional two-stage NF process under single-stage operation and reduced energy consumption by 13% at a low operating pressure of 10 bar. Collectively, these findings demonstrate the feasibility of efficient Co 2+ /Li + separation from spent LIBs leachates and highlight its potential to enhance both the resource-recovery efficiency and environmental sustainability of lithium-ion battery recycling.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Hong-Lan Liu,Lin-Lin Zhu,Si-Yuan Tong,Wei-Ming Guo,Hua-Tay Lin
The highly transparent Er 2 O 3 ceramics were prepared with ZrO 2 and La 2 O 3 sintering aids in vacuum. The experimental results demonstrate that the presence of ZrO 2 consistently suppresses grain boundary migration, while La 2 O 3 promotes it. And the ability of ZrO 2 to reduce grain boundary migration rate surpasses the effect of La 2 O 3 in promoting grain boundary migration. At 1600°C, the Er 2 O 3 transparent ceramics doped with 10 at.% La 2 O 3 and 1 at.% ZrO 2 achieved optimal transparency with in-line transmittance of 76.7% at 1100 nm. The Er 2 O 3 sample doped with 10 at.% La 2 O 3 and 3 at.% ZrO 2 , sintered at 1800°C, exhibited the highest transmittance, reaching 80.3% at 1100 nm, corresponding to 99.1% of the theoretical in-line transmittance of Er 2 O 3 single crystal. Up/down-conversion emissions in Er 2 O 3 ceramic doped with 10 at.% La 2 O 3 and 3 at.% ZrO 2 were observed across the visible, near-infrared, and mid-infrared regions, exhibiting promising potential for applications as fluorescent displays, up-conversion luminescent materials, and infrared lasers.
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高影响因子
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2014
·
IF 1.357
Liang Tian,Jing Yang,Feng Ji,Yuxi Liu,Fanglian Yao
Multifunctional core–shell nanoparticles are widely used for biomedical and catalytic applications. In this work, bilayers of chitosan (Cs) and phosphorylated polyvinyl alcohol (PPVA) were sequentially deposited on 3-Aminopropyltri-ethoxysilane-modified SiO2 nanoparticles via layer-by-layer electrostatic self-assembly. The good spherical shape and size distribution were observed by DLS and transmission electron microscope analysis. 7-Hydroxycoumarin (7-HC) and rhodamine B (RhB) as model drugs were loaded in the core and shell of the nanoparticles separately. Confocal laser scanning microscopy shows the core–shell structure of HC-SiO2(PPVA/Cs)n-RhB nanoparticles and the embedded location of 7-HC and RhB. The pH-sensitive release investigation of RhB indicates that the release profiles of RhB from HC-SiO2(PPVA/Cs)3PPVA-RhB core–shell nanoparticles are totally different at pH values of 2.0, 7.4, and 9.2. These results predict that the multifunctional nanoparticle SiO2(PPVA/Cs)n has a great potential for drug delivery.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
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IF 8.758
Xiaoyan Yuan,Ruiqin Wang,Wenrui Huang,Luo Kong,Shouwu Guo,Laifei Cheng
To enhance microwave loss abilities, constructing composites with one-dimensional (1D) structure is an excellent scheme. In this work, a high-efficiency microwave absorber of MnO nanograins decorated vanadium nitride/carbon nanofibers (MnO-VN/C NFs) was successfully prepared for the first time via co-electrospinning technology and subsequent nitriding treatment. Studying in detail the specific relationship between nitriding time and the morphology of the as-prepared NFs, the precipitations of MnO nanoparticles with tailored structures were attached on the surface of VN/C NFs to optimize their electromagnetic parameters. When the nitriding time was 2.0 h at 600 °C, the MnO-VN/C NFs displayed good microwave absorption performances: the minimum reflection loss (RL) value was −63.2 dB at 8.8 GHz, and the bandwidth of RL < −10 dB was up to 6.4 GHz from 11.6 to 18 GHz at the thickness of 2.8 mm. Meanwhile, the absorption bandwidth (RL< −10 dB) could cover the whole X and Ku band by adjusting the thickness, respectively. The outstanding performances could be attributed to the good impedance matching and various loss pathways including conductive loss and interfacial and dipole polarizations. In these regards, MnO-VN/C NFs are likely to be utilized as a high-efficiency microwave absorber. And the strategy in this work can provide great help to design other 1D structural microwave absorbers with a broader absorbing band.
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高影响因子
International Journal of Environmental Research and Public Health
·
2022
·Vol. 19
·期 5
·
IF 4.614
Arcadia Del Rio,Narcisa Muresu,Giovanni Sotgiu,Laura Saderi,Illari Sechi,Andrea Cossu,Manuela Usai,Alessandra Palmieri,Bianca Maria Are,Giovanna Deiana
Background:Carbapenem-resistantKlebsiella pneumoniae(CR-Kp) is endemic globally, causing severe infections in hospitalized patients. Surveillance programs help monitor and promptly identify the emergence of new clones. We reported the rapid spread of a novel clone ofK. pneumoniaeco-harbouring class A and D carbapenemases in colonized patients, and the potential risk factors involved in the development of infections.Methods:Rectal swabs were used for microbiological analyses and detection of the most common carbapenemase encoding genes by real-time PCR (i.e., blaKPC, blaOXA-48, blaNDM, blaVIM, and blaIMP). All strains co-harbouring KPC and OXA-48 genes were evaluated. For each patient, the following variables were collected: age, sex, length and ward of stay, device use, and outcome. Clonality of CR-Kp was assessed by preliminary pulsed field gel electrophoresis (PFGE), followed by multi-locus sequence typing (MLST) analyses.Results:A total of 127 isolates ofK. pneumoniaeco-harbouring KPC and OXA-48 were collected between September 2019 and December 2020. The median age (IQR) of patients was 70 (61–77). More than 40% of patients were admitted to intensive care unit (ICU). Around 25% of patients developed an invasive infection, the majority of which were respiratory tract infections (17/31; 54.8%). ICU stay and invasive infection increased the risk of mortality (OR: 5.39, 95% CI: 2.42–12.00; OR 6.12, 95% CI: 2.55–14.69, respectively;p-value ≤ 0.001). The antibiotic susceptibility test showed a resistance profile for almost all antibiotics considered. Monoclonal origin was confirmed by PFGE and MLST showing a similar restriction pattern and belonging to ST-512.Conclusions:We report the spread and the marked antibiotic resistance profiles ofK. pneumoniaestrains co-producing KPC and OXA-48. Further study could clarify the roles of clinical and microbiological variables in the development of invasive infection and increasing risk of mortality, in colonized patients.
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高影响因子
Crystals
·
2023
·Vol. 13
·期 7
·
IF 2.7
Qingliang Xu,Wanqing Qian,Raz Muhammad,Xinhua Chen,Xueqing Yu,Kaixin Song
The optical temperature sensor utilizing the fluorescence intensity ratio (FIR) has garnered significant attention in the past few years due to its rapid response, robust anti-interference capability, remote control feature, and other advantages. In this study, the high-temperature solid-phase approach was used to fabricate a variety of double perovskite-structured La2MgSnO6: Bi3+, Sm3+(LMS: Bi3+, Sm3+) phosphors. The Rietveld refinement data of XRD and the Gaussian fitting of the emission peak of LMS: 0.02Bi3+phosphor indicated Bi3+occupies three lattice sites. The calculation and analysis of average lifetime and energy transfer efficiency substantiated the presence of energy transfer from Bi3+to Sm3+, with a transfer efficiency of up to 59.07%. The emission intensity of LMS: 0.02Bi3+, 0.05Sm3+at 403 K maintains 50.2% at the condition of room temperature. The FIR fitting and calculation demonstrated that LMS: 0.02Bi3+, 0.05Sm3+phosphor possessed good optical temperature sensitivity, with a maximum absolute sensitivity Sa-maxof 0.0055 K−1and a maximum relative sensitivity Sr-maxof 0.88% K−1, demonstrating its valuable potential applications for optical temperature sensors.
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高影响因子
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