ACS Applied Materials & Interfaces
·
2020
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IF 8.758
Yilong Lin,Dongdong Chen,Shuanjin Wang,Dongmei Han,Min Xiao,Yuezhong Meng
The effective passivation of a sulfur electrode in Li–S pouch cells is addressed by increasing the discharging cutoff voltage from 1.6 to 2.0 V. This simple method can effectively suppress the generation of solid and insulated Li2S deposition while reserves the majority of capacity and improves the cyclic stability of Li–S pouch cells. Upon increasing the discharging cutoff voltage from 1.6 to 2.0 V, the Li–S pouch cell loses only 8% of the initial discharge capacity and remarkably promotes the capacity retention rate from 62.4 to 91.6% within 40 cycles at 0.05C. The analysis of electrochemistry and physics of a sulfur cathode demonstrates that the less Li2S deposition under the discharging cutoff voltage of 2.0 V can ensure fast reaction kinetics in Li–S pouch cells with high areal sulfur loadings and lean electrolyte. The mechanism of the passivation of a sulfur electrode is studied and discussed in detail. This brand new methodology may provide an effective approach to enhance the cyclic stability of a Li–S battery.
研究领域:
储能
·
电化学
·
材料科学
·
电池技术
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.3
Geng Zhang,Bolong Jiang,Decheng Lu,Xueqin Wang,Yuanyuan Wang,Hua Song
The sluggish kinetics of the oxygen reduction reaction (ORR) at the cathode severely limits the electricity generation and pollutant degradation of microbial fuel cells (MFCs). Herein, we report a facile one-pot pyrolysis strategy for fabricating a highly dispersed iron-embedded N/S co-doped hierarchical porous carbon catalyst (FeSNC) with accessible Fe−N 4 −S active sites using tetramethylammonium hydroxide (TMAH)-optimized Fe-ZIF-8-N-H precursors. TMAH enables rapid synthesis (16 min), 3.6-fold yield enhancement, mesopore engineering for efficient Fe 2+ capture and dense Fe−N 4 −S site formation, and hierarchical pore construction for accelerated mass/electron transport. The Fe source (NH 4 ) 2 Fe(SO 4 ) 2 ·6 H₂O synchronously introduces N and S to optimize pyridinic N and Fe−N x coordination. Theoretical calculations reveal that S-doping modulates the electronic structure of the central Fe, while mesopore-induced defects act as a secondary modulator, collectively establishing a dual-modulation mechanism to optimize the adsorption/desorption of ORR intermediates. The 6 %FeSNC-N-H catalyst outperforms commercial Pt/C in ORR across neutral/alkaline/acidic media and, as an MFC cathode, delivers a peak power density of 987.0 ± 5.3 mW cm⁻², 96.75 % COD removal, and high degradation efficiency for phenol (93.4 %) and methylene blue (95.6 %). This work underscores the critical synergy between of metal centers electronic microenvironment and nanostructural pore engineering for advanced electrocatalysts.
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ADVANCED MATERIALS
·
2026
·
IF 26.8
Jiaying Lin,Jiali Duan,Jiangna Guo,Hui Xu,Rongwei Shi,Linhui Zhao,Yangyang Liu,Na Meng,Jiateng Zhou,Xiao Zhang,Shihui Lin,Feng Yan,Bin Wang,Hailei Mao
Staphylococcus aureus membrane vesicles (MVs) cause host injury and excessive inflammation, yet their pathological roles and clearance strategies remain undefined. Guided by molecular dynamics simulations of MV-polymer interactions, we engineered imidazolium-based poly(ionic liquid) (PIL) electrospun nanofibers for targeted MV interception. Among multiple formulations, PIL-C4 demonstrated optimal performance, combining potent antibacterial activity, robust adsorption of methicillin-resistant S. aureus (MRSA) MVs and their virulence factors, minimal cytotoxicity, and inhibition of resistance transmission. In vivo, PIL-C4 attenuated MV-induced neutrophil extracellular trap (NET) formation (NETosis) and vascular leakage, thereby reducing purulent-exudative wound injury and preventing systemic organ damage, including fatal lung injury. Notably, DNase-mediated NET degradation alone failed to rescue MV pathology, underscoring the necessity of direct MV clearance. This study uncovers previously unrecognized NETosis-driven phenotypes of S. aureus MVs—local purulent-exudative wound injury and systemic lethal lung damage—and establishes a polymer-based clearance strategy with translational potential for infection control.
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CHINESE JOURNAL OF CATALYSIS
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2026
·
IF 17.7
Rundong Chen,Yuhang Zhang,Bingquan Xia,Xianlong Zhou,Yanzhao Zhang,Shantang Liu
Photocatalysis is deemed a green approach to sustainable energy conversion with great promise for addressing future energy challenges. However, traditional photocatalytic systems are often inhibited by rapid recombination of photogenerated electron-hole pairs and low light-harvesting efficiency. To overcome these challenges, an S-scheme heterojunction integrating Zn x Cd 1– x S y (ZCS) nanocrystals with FePS 3 (FPS) nanosheets was designed to facilitate both photocatalytic hydrogen evolution and the conversion of benzyl alcohol to benzaldehyde (BAD). The obtained ZCS/FPS-15 (ZCSF-15) heterostructure exhibits remarkable visible-light-harvesting enhancement and charge separation efficiency, delivering a hydrogen evolution rate of 73.06 mmol g −1 h −1 and a BAD production rate of 46.68 mmol g −1 h −1 , corresponding to 22.34- and 53.65-fold performance enhancements, respectively, compared with that of bare ZCS. To reveal the charge transfer dynamics and clarify the reaction mechanisms, in-situ diffuse-reflectance Fourier-transform infrared spectroscopy was used to identify key oxidation intermediates, coupled with interfacial charge transfer dynamics probed using in-situ X-ray photoelectron spectroscopy and atomic force microscopy-Kelvin probe force microscopy. This work establishes a dual-function heterojunction model, offering valuable insights into how to design S-scheme heterojunctions for simultaneous green fuel generation and selective organic synthesis.
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GREEN CHEMISTRY
·
2026
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IF 9.2
Yujie Yuan,Ziyu Yang,Hao Wang,Tong Wu,Xiaoyi Zhang,Lin Chen,Zhaohuan Wei,Rui Wang,C. Venkata Reddy,Jaesool Shim,Hui Tang
Electrocatalytic seawater splitting holds immense promise as a green hydrogen production technology; however, the anodic oxygen evolution reaction (OER) confronts formidable challenges arising from the high concentration of chloride ions (Cl -) and other impurities in seawater. Herein, we develop a facile two-step immersion corrosion strategy to successfully construct a Ni 3 S 2 @FeOOH heterojunction electrocatalyst on nickel foam (NF) tailored for industrial alkaline seawater oxidation. Integrating density functional theory (DFT) calculations and experimental characterizations, we demonstrate that Ni 3 S 2 @FeOOH selectively enriches OH -while repelling Cl -during OER in alkaline seawater electrolytes. Notably, in situ leaching of SO 4 2-from the electrode triggers efficient self-reconstruction, facilitating the generation of high-valence metal active sites. The asfabricated catalyst exhibits remarkable OER performance with a low overpotential of 390.5 mV at an ultrahigh current density of 1000 mA cm -2 in alkaline seawater. Moreover, it maintains exceptional electrochemical stability for over 1000 hours at the industrial current density of 1000 mA cm -2 . This work provides a scalable strategy for constructing self-reconstructing electrocatalysts that promote highvalence metal site formation and efficient Cl -repulsion in alkaline seawater oxidation.
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ACS Catalysis
·
2026
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IF 13.6
Zhibo Su,Guoqiang Peng,Min Li,Guowei Zhou,Jiandong Pang,Falu Hu
Photocatalytic CO2 conversion into high-value-added products represents a promising approach to mitigating global energy demands and environmental problems. S-scheme heterojunctions hold significant potential for photocatalytic CO2 reduction owing to their efficient spatial charge separation and preserved strong redox capabilities, with the internal electric field (IEF) serving as the primary driving force for directional charge transfer. However, achieving precise and rational modulation of the IEF to further boost photocatalytic CO2 conversion efficiency remains a considerable challenge. Herein, we propose a crystal facet engineering strategy to finely tailor the IEF in S-scheme heterojunctions by employing metal−organic frameworks (MOFs) with well-defined exposed facets. A series of NH2-MIL-125@ZnIn2S4 (NM@ZIS) heterojunctions were constructed, and among them, the NM111@ZIS heterojunction interfaced exclusively with the (111) facet was demonstrated to possess the strongest IEF, as unambiguously verified by combined experimental characterization and density functional theory (DFT) calculations. This optimized charge configuration resulted in good photocatalytic CO2 reduction performance, yielding a CO evolution rate of 145.55 μmol·g−1·h−1, substantially outperforming counterparts with mixed or other facet orientations. This work provides a viable pathway for customizing the IEF in S-scheme heterojunctions through MOF crystal facet engineering, offering generalizable insights for the rational design of high-performance photocatalysts.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 33
·16075-16088
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IF 5.8
Xia Junkun,He Zhongyi,Lei Juanhong,Long Qiyang,Xiong Liping,Li Lili,Liu Feng,Ouyang Laizhao,Zeng Xiangqiong
Carbon dots are attractive lubricant nanoadditives because
their
nanoscale size and tunable surface chemistry allow them to interact
with confined friction interfaces. However, achieving effective antiwear
protection under high contact loads requires surface structures that
can couple physical filling with interfacial film formation. Here,
N, S, and P-modified carbon dots (NSP-CDs) were prepared from glucose-derived
carbon using taurine and phytic acid as heteroatom sources. The resulting
NSP-CDs had an average size of about 2.5 nm and exhibited abundant
oxygen-, nitrogen-, sulfur-, and phosphorus-containing functional
groups. When used as nanoadditives, 0.3 wt % NSP-CDs markedly improved
the antiwear performance of steel-to-steel contacts. At 392 N and
1400 rpm, the average wear scar diameter decreased by 47.5% compared
with the base oil, while the wear volume and apparent wear rate both
decreased by about 92.4%. Wear scar morphology, elemental mapping,
and X-ray photoelectron spectroscopy showed that NSP-CDs formed a
composite protective film containing a carbonaceous adsorption layer,
iron oxides/hydroxides, P–O/Fe–O–P-related phosphates,
and oxidized sulfur species. The antiwear effect is attributed to
the combined action of nanoparticle filling, rolling-polishing, and
N, S, and P-assisted interfacial film formation. These results suggest
that multielement surface modification is an effective strategy for
designing carbon dot nanoadditives for high-load antiwear lubrication.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Jingjing Gao,Yadong Wang,Jiaoyang Huang,Zongmin Zhu
In this work, an innovative MXene-based nanohybrid, denoted as MXene-PDS, is fabricated through the integration of MXene with P/N/S-functionalized organic oligomer via hydrogen bonding. The incorporation of low loadings of MXene-PDS imparts effective flame retardancy to polylactic acid (PLA) while maintaining its processing and mechanical properties. Under a loading of 3% MXene-PDS, PLA/3MXene-PDS attains the UL-94 V-0 rating and exhibits a limiting oxygen index (LOI) of 22.8%. The peak heat release rate (PHRR) is reduced by 12.5%. Additionally, mechanical properties present good enhancement, with a notable 36% improvement in impact performance. The significant reduction in viscosity of PLA/3MXene-PDS greatly improves the processing performance. This study proposes a method for preparing MXene-based nanomaterial with high flame retardancy, which can endow polymers with multiple performance characteristics by adding a single functional additive.
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POLYMER DEGRADATION AND STABILITY
·
2026
·
IF 8.1
Nanshan Wu,Shukang Zhou,Wuxiang Chen,Suqin He,Miaoming Huang,Wanlin Xu,Chengshen Zhu,Wentao Liu,Hao Liu
Balancing performance, cost, and end-of-life management remains a challenge for sustainable polyethylene alternatives. This work investigates the thermal degradation pathways of fully bio-based poly(alkylene sebacate)s synthesized from sebacic acid and C 2 -C 6 α,ω-alkanediols. By systematically varying diol length and parity, we reveal that the pyrolysis kinetics are fundamentally governed by the interplay between ester dipole alignment and methylene segment length. In poly(ethylene sebacate) (PESe), the combination of antiparallel dipoles and short ethylene glycol segments induces dense inter-chain interactions and a homogeneous activation energy landscape, triggering a single-stage F1 random chain scission. Conversely, polyesters lacking this structural uniformity, whether due to odd-even parity (PPdSe, PPtSe) or extended even-even segments (PBSe, PHSe), preserve the energetic distinction between amorphous and crystalline domains. This phase separation leads to a sequential two-stage F2 to F3 degradation. Beyond programmable thermal stability, these polyesters exhibit tensile strengths comparable to high-density polyethylene (HDPE), resist neutral hydrolysis, yet are susceptible to enzymatic degradation and closed-loop chemical recycling into monomers. These findings establish diol parity and conformational constraints as precise design parameters for tailoring the end-of-life profiles of sustainable polyesters.
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Surfaces and Interfaces
·
2026
·
IF 6
Keer Tan,Jinping Zhao,Linfa Bao,Linjun Shao,Hanyun Liu,Yishuo Dong,Peng Yang
Catalytic combustion is a widely used technology for volatile organic compounds (VOCs) abatement, in which highly active catalysts play a key role. However, catalyst is prone to poisoning during the degradation of VOCs. In order to study anti-poisoning performance, the Cl, S and P heteroatoms were artificially introduced, and the corresponding doped CuO-ZrO 2 catalysts were prepared via a salicylic acid-assisted sol-gel method. The effects of heteroatom doping on the structure, acidity, redox properties and catalytic performance were systematically studied. The results showed that Cl, S and P doping effectively tuned the catalyst structure, active species dispersion and surface Lewis/Brønsted acid sites, which exerted a meaningful influence on catalytic performance of catalysts in the degradation of VOCs pollutants. In addition, compared with the undoped CuZrO, Cl-CuZrO exhibited the highest catalytic performance for degradation of toluene, chlorobenzene and p-chlorotoluene, indicating that the CuO-ZrO 2 catalyst system possessed excellent chlorine resistance. Meanwhile, S-CuZrO showed comparable performance to CuZrO, which demonstrated that the CuO-ZrO 2 catalysts had a certain degree of sulfur resistance. Through the design and optimization of heteroatom doping, this work provided valuable insights for enhancing the catalytic efficiency and structure stability of CuO-ZrO 2 based catalysts.
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Journal of Hazardous Materials Advances
·
2026
·
IF 9.1
Qingyao Fu,Yuzeng Wang,Yidi Zhang,Zhenlong Wu
Bisphenol compounds are recognized as persistent environmental pollutants and are strongly linked to various adverse pregnancy outcomes. Despite research progress on the reproductive toxicity of BPA on the ovaries and oocytes, the impact of BPA-related compounds on placental development remains unclear. In our study, BPA/BPS exposure induced structural abnormalities and dysfunction in nutrient transport within the placenta of pregnant mice, significantly inhibiting on the proliferation and migration of porcine trophoblast cells (PTR2), and increased apoptosis. Besides, BPA exposure resulted in upregulation of E-cadherin protein expression and the downregulation of fibronectin, vimentin, and ZEB2 protein expression. Additionally, BPA/BPS exposure also impaired angiogenesis of porcine vascular endothelial cells (PVEC). Mechanistically, BPA/BPS activated the endoplasmic reticulum stress (ERS) signaling pathway by enhancing p-eIF2α protein expression, which subsequently interfered with the epithelial-mesenchymal transition (EMT) process. Importantly, 4-phenylbutyric acid (4-PBA) and Salubrinal reversed these adverse effects, promoting EMT process and angiogenesis. Collectively, our study elucidates a novel ERS-EMT signaling axis as a potential mechanism underlying bisphenol-induced placental dysfunction.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Renzhi Xiong,Dongchen Duan,Feiyan Shi,Wenjun Zheng,Yanhe Xiao,Baochang Cheng,Shuijin Lei
Photocatalytic CO 2 reduction is primarily limited by inefficient charge separation and insufficient thermodynamic driving force. To address these intertwined challenges, this study constructs a novel S-scheme heterojunction by integrating the ferroelectric layered perovskite Bi 3 TiNbO 9 with the lead-free double perovskite Cs 2 AgBiBr 6 , which synergistically couples an interfacial built-in electric field with an intrinsic ferroelectric polarization field. This dual-electric-field design facilitates the efficient separation and directional migration of photogenerated charge carriers while preserving strong redox capability, thereby simultaneously overcoming both kinetic and thermodynamic limitations. The developed heterojunction exhibits outstanding CO 2 photoreduction performance, delivering a CO yield of 42.6 μmol g −1 h −1 , which is 6.7 and 26.6 times higher than those of the individual Cs 2 AgBiBr 6 and Bi 3 TiNbO 9 components, respectively. Moreover, it demonstrates excellent stability, retaining 89.3% of its initial activity after 48 h of continuous operation. Comprehensive characterization and theoretical calculations collectively confirm: (i) the successful construction of an intimate S-scheme heterojunction; (ii) the presence of a ferroelectric polarization field; and (iii) a significantly reduced energy barrier for COOH* formation, which promotes CO 2 reduction. The integration of ferroelectric effects with S-scheme heterojunction engineering presented in this work provides a promising strategy for developing efficient solar energy conversion systems.
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