ACS Applied Nano Materials
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2024
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IF 5.3
Ao Ding,Yupeng He,Fei-Fei Chen,Yan Yu
Bacterial infections result in significant burdens on public health, especially with the increasing prevalence of antibiotic resistance owing to the overuse of antibiotics. The development of the next-generation nanoantibacterial materials as alternatives to antibiotics is urgently needed. Metal–organic frameworks (MOFs) have been emerging as promising antibacterial materials. However, the impact of metal centers on the properties and antibacterial activity of MOFs has not been clarified to date. In this work, five M-MOF nanomaterials (M = Fe, Co, Ni, Cu, Zn) are synthesized with 2-methylimidazole as an organic ligand. Subsequently, the minimum inhibitory concentration (MIC), minimum bactericidal concentration, and time-kill curves are studied to evaluate their antibacterial activity. In addition, the destruction of the bacterial cells after treatment with M-MOFs is observed via scanning electron microscopy. The experimental results demonstrate that the Co-MOF and Zn-MOF polyhedra exhibit optimal antibacterial activity. They can effectively inhibit the growth of both Gram-negative bacteria Escherichia coli and Gram-positive bacteria Staphylococcus aureus at a low concentration. On the other hand, the Fe-MOF irregular particles show the weakest antibacterial activity among five M-MOFs and the antibacterial activity of the Ni-MOF and Cu-MOF nanosheets are comparable to each other. The huge difference in antibacterial activity of M-MOFs is attributed to the difference in the shape and size, specific surface area, surface charge, ion release, and production of reactive oxygen species. Overall, this study clarifies the relationship between metal centers in M-MOFs and their antibacterial activity.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Chenhao Lv,Beibei Li,Yangyang Ren,Guichao Zhang,Zunming Lu,Lanlan Li,Xinghua Zhang,Xiaojing Yang,Xiaofei Yu
Recently, single-atom catalysts (SACs) have exhibited highly efficient oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) catalytic performance comparable to those of commercial noble metal catalysts. During the synthesis procedure, how to avoid the agglomeration of metal atoms is the key to the successful synthesis of single-atom catalysts. In this article, two metal organic frameworks (MOFs) were composited by a simple and efficient “MOF-plus-MOF” strategy. Then, Co single atoms stabilized by N-doped carbon (Co SAs @NC-920) were successfully prepared from ZnCo-ZIF@Zn-MOF-74 for the first time because of the novel pyrolysis behavior of the dual-MOF precursor. Thanks to the three-dimensional interconnected structures, large specific surface area, abundant N-active species and Co-N 3 C 1 single-atom configuration, Co SAs @NC-920 showed outstanding ORR/OER performance beyond that of commercial noble metal catalysts. Moreover, it displayed larger specific capacity, higher discharge power density and excellent cycling stability in the real rechargeable zinc-air battery (ZAB).
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Small
·
2025
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IF 12.1
Jiajun Wan,Qian Zhang,Xu Jia,Pengfei Zhang,Yuanze Yu,Jiyang Tian,Jie Liu
Aqueous Zn-ion batteries (AZIBs) recently have attracted broad attention. To achieve high energy density of AZIBs, constructing high-loading cathodes is the prerequisite. However, the cycling stability of high-loading cathodes still faces great challenges. Herein, a comprehensive strategy is proposed to improve the structural stability of the cathode material and mechanical stability of the high-loading cathode. The BiOBr@BiOIO 3 heterostructure are successfully constructed via sharing the interfacial oxygen atoms, in which the interfacial effect can effectively enhance the reaction dynamics and structural stability. Meanwhile, a biomimetic binder is skillfully designed via in situ dual cross-linking between guar gum and cation ions to achieve the application of water-based and sustainable polymer binder in AZIBs. Density functional theory calculations demonstrate the guar gum possesses strong affinity toward BiOBr@BiOIO 3 to firmly adhere the active materials. Quantitative nanomechanic technology visually demonstrates the robust mechanical properties of the as-obtained BiOBr@BiOIO 3 cathode. As a result, when the active material loading increases to as high as 100.71 mg cm −2 , an ultrahigh areal capacity of 20.02 mAh cm −2 can be achieved. Specially, a quasi-Ah-level (0.244 Ah) pouch-type cell with a loading of 1.17 g can be constructed, showing the practical application potential.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Jing Yao,Huiying Wang,Ziwang Che,Bolin Feng,Hailong Cheng,Yingying Huang,Yunlong Zhou,Qiuping Qian,Zhenbin Chen
Despite the continuous exploration and development of new antibiotics, the emergence of super-resistant bacteria has led to a gradual loss of effectiveness in some antibiotics. Developing new methods and applying antimicrobial materials can effectively reduce antibiotic usage, thereby slowing down the emergence of bacterial resistance. Herein, we present a novel micro-nano composite antimicrobial material synthesized through a one-pot method. This innovative system integrates ZnO, Cu2O, and CuCO3 onto CaCO3 carriers, demonstrating dual advantages of structural simplicity and functional synergy. The composite exhibits exceptional antimicrobial performance with minimum bactericidal concentrations of 15.625 µg/mL against Gram-negative bacteria and 7.8125 µg/mL against Gram-positive bacteria, while maintaining favorable biosafety. Mechanistic studies reveal a dual bactericidal action: (1) physical disruption of bacterial membranes through permeability alteration and structural damage, leading to critical cellular component leakage (e.g., DNA); (2) intracellular reactive oxygen species (ROS) overproduction triggering oxidative stress. Characterization by thermogravimetric analysis confirms its thermal stability and suitability for polymer processing. The cost-effective synthesis protocol and scalable production potential position this copper-zinc micro-nano composite as a promising candidate for advanced antimicrobial plastics engineering, addressing both efficacy and industrial feasibility requirements.
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FUEL
·
2024
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IF 6.7
Fuwen Yang,Jie Zhang,Jinwei Chen,Gang Wang,Tong Yu,Junyu Zhao,Qian Li,Zongbo Shi,Runsheng Zhuo,Ruilin Wang
Propane dehydrogenation (PDH) provides a promising way to meet the requirement of propylene supply, but the commonly-used Pt-based catalysts still suffer from unsatisfactory stability and deactivation. Herein, an interfacial regulation strategy is developed to construct the Cu, Pt, and Zn species modified hollow porous silicalite-1 (CuPt/Zn-HPS-1). Owing to the regulation role of Pt, the electron-deficient [ZnOH] + Lewis acid sites accelerated the C-H activation, which was beneficial to achieve the excellent PDH performance. More importantly, the additionally introduced Cu 2+ further modulated the geometric structure and electronic density of Pt, thus effectively improving the anti-sintering ability and alleviating the coke deposition. Benefiting from the interfacial regulation and Lewis active [ZnOH] + sites, the optimal CuPt/Zn-HPS-1 catalyst exhibited an excellent catalytic PDH performance with the initial propane conversion of 30.4 % and propylene selectivity of 99.0 %. The CuPt/Zn-HPS-1 also demonstrated robust recycling stability in reaction-regeneration cycling test with the smaller deactivation rate constant. This work affords a strategy for improving PDH performance in practical industrial application.
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OPTICAL MATERIALS
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2025
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IF 4.2
Lan Fang,Dengfeng Luo,Jing Zhang,Fukang Wang,Jiayang Zhang,Zheheng Zheng,Zhiqun Xu,Guobin Huang
The commercial applications of lead halide perovskites are limited by their adverse environmental hazards and intrinsic instability. One promising strategy to mitigate the Pb 2+ content is the doping of X 2+ transition metal ions into cesium lead halide CsPbX 3 (where X = Cl, Br, I) perovskite nanocrystals (PNCs). In this study, an ultrafast high-power ultrasonic synthesis method is employed to ensure uniform nucleation and growth of co-doped (Zn, Mn): CsPbCl 3 PNCs. Various analytical techniques are utilized to investigate the phase purity, microstructure, chemical composition, and photo-luminescence properties of the co-doped PNCs. Density functional theory (DFT) calculations reveal that the significantly enhanced optical performance of co-doped (Zn, Mn): CsPbCl 3 PNCs is primarily due to the increased formation energy resulting from the successful incorporation of Zn 2+ into Mn-doped CsPbCl 3 PNCs, without introducing new defect states. Additionally, the co-doped (Zn, Mn): CsPbCl 3 PNCs exhibit high sensitivity and selectivity in detecting Cu 2+ ions. Our findings propose a novel approach for tuning the optical properties of co-doped (Zn, Mn): CsPbCl 3 PNCs, highlighting their potential for applications in fluorescence sensors.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Zhao Cui,Liang Lu,Jing Sun,Qian Li,Ting Li,Guangyue Li
CO2 + O2 neutral leaching represents a promising sustainable method for uranium extraction; however, its practical effectiveness is frequently limited by the slow kinetics of CO2 hydration, which hinders the formation of bicarbonate ions essential for the complexation and dissolution of uranium. To overcome this kinetic limitation, a novel magnetic zinc-coordinated carbonic anhydrase-mimicking nanozyme (Fe3O4@ZnAC) was successfully developed via a facile one-pot sol–gel coating strategy. Comprehensive characterization confirmed that the nanozyme exhibits a distinctive core–shell heterostructure, consisting of a superparamagnetic Fe3O4 core enabling facile magnetic recovery and a zinc-rich organosilicate shell providing abundant, accessible Zn–N/O catalytic sites analogous to natural carbonic anhydrase. Enzymatic studies revealed that Fe3O4@ZnAC possesses outstanding carbonic anhydrase-mimicking catalytic performance, robust operational stability, and excellent recyclability, highlighting its potential for sustainable industrial applications. When integrated into a dual-reactor uranium leaching system, Fe3O4@ZnAC substantially increased bicarbonate ion production by approximately 47% compared to the uncatalyzed scenario. This catalytic improvement resulted in a uranium extraction efficiency of 45.79%, significantly higher than the 36.36% observed in control experiments. This study provides valuable insights into the rational design and practical application of biomimetic nanozymes, proposing an effective strategy for integrating efficient resource recovery with sustainability and global carbon neutrality goals.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Jingwen Shao,Ping Lei,Lan Jin,Jiehui Liu,Shuyuan Zhuge,Zhe Lü
Despite the inherent advantages of aqueous zinc-ion batteries (AZIBs), such as low cost, facile assembly, and high safety enabled by aqueous electrolytes, the severe parasitic reactions induced by active water molecules at the Zn anode interface critically compromise the cycling stability and practical applications. Herein, the trace multifunctional additive 1H-1,2,3-Triazole (Trl) was introduced into the electrolyte to reconfigure the interfacial environment for highly reversible Zn anodes. Density functional theory (DFT) calculations and experimental analyses reveal that Trl exhibits a stronger adsorption preference on Zn anodes, forming an aqueous-depleted electric double layer (EDL) that effectively suppresses water-induced side reactions. Crucially, comparative analysis of Zn2+ binding energies demonstrates that trace Trl cannot disrupt the [Zn(H2O)6]2+ solvation structure in bulk electrolytes, while within the Trl-regulated EDL, it accelerates Zn2+ desolvation and diffusion relaxation, thereby promoting orderly Zn2+ diffusion and uniform deposition. This multimodal regulation shifts the Zn deposition mechanism from diffusion-controlled to kinetic-controlled. Consequently, Zn||Zn symmetric cells achieve ultralong cycling stability for over 5000 h at 3 mA cm–2 and 1 mAh cm–2, and the Coulombic Efficiency is remarkably improved to 99.75%. Full cells paired with NH4V4O10 cathodes also demonstrate enhanced electrochemical performance, significantly outperforming their additive-free counterparts.
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ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Rong Wang,Chuan Gao,Haiwei Su,Zhen Chen,Junhua Li,Yue Peng
Proton–electron transfer (PET) processes play a pivotal role in numerous electrochemical reactions; yet, effectively harnessing them remains a formidable challenge. Consequently, unveiling the PET pathway is imperative to elucidate the factors influencing the efficiency and selectivity of small molecule electrochemical conversion. In this study, a Zn–NC model catalyst with N and C vacancies was synthesized using a hydriding method to investigate the universal impact of PET on CO2 electroreduction. The introduction of N vacancies induced the formation of a distinctive Zn–N3 topological structure and atomically populated Znδ+ sites with lower valence states, thereby facilitating the cleavage of the C═O bonds. Conversely, C vacancies led to the formation of stable C–H bonds and tuned the rate of dissociation of H2O to H*. In comparison to sequential proton–electron transfer, concerted proton–electron transfer significantly enhanced the formation of *COOH species, a critical step in the CO2 reduction process on a Zn-enhanced N-doped carbon catalyst. The catalyst exhibited a remarkable 96% CO Faradaic efficiency at −0.36 V vs RHE. This research contributes to the ongoing endeavors to unlock the full potential of concerted proton–electron transfer in electrochemical synthesis and its application in sustainable energy and environmental solutions.
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ACS Nano
·
2025
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IF 16
Lingmei Wang,Huicai Wang,Junlun Cao,Jicheng Yan,Changwei Dai,Wuzhu Sun,Qingyang Du,Zhiqiang Huang,Dan Liu,Chao Li,Jingyu Sun
Aqueous Zn-ion batteries utilizing moldable gel electrolytes are expected to meet power requirements for wearable devices because of their inherent safety and energy output. Nevertheless, comprehensive modulation over the mechanical robustness, water retention capability, and electrode–electrolyte interface stability remains at a nascent stage. Drawing inspiration from the naturally cryoprotective and hygroscopic properties of trehalose, we herein devise a strategy by incorporating trehalose into polyacrylamide hydrogel electrolytes, targeting the construction of wearable Zn-ion batteries. The optimized hydrogel electrolyte demonstrates low-temperature adaptability (−15 °C), high-temperature stability (50 °C), and water retention capability while helping to suppress dendrite growth and parasitic reactions. Theoretical calculations and electrochemical characterizations reveal that trehalose modifies the Zn-ion solvation structure and optimizes the electrode–electrolyte interface. The thus-fabricated Zn-ion batteries exhibit favorable electrochemical performances in a wide-temperature range, achieving a capacity retention of 87.2% after 2000 cycles at 5 A g–1. The assembled pouch cell could also be sustained for more than 500 cycles. Moreover, the integration of our Zn-ion batteries with Si solar cells to construct a wearable solar-charging system enables an energy conversion efficiency exceeding 10%.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Jiajia Li,Guoliang Lai,Ling Li,Wenming Zhang
The rational design of low-cost, efficient, and durable bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is critical for advancing next-generation energy storage systems. Here, a dodecahedral zeolitic imidazolate framework-67 (ZIF-67) is employed as a structural template to direct the formation of cobalt-tipped nitrogen-doped carbon nanotube arrays (Co@NC@NCNT). This hierarchical architecture integrates high electrical conductivity with abundant accessible active sites. By optimizing the calcination temperature and melamine content, the resulting Co@NC@NCNT-750-10 catalyst achieves a high ORR half-wave potential of 0.821 V and a low OER overpotential of 370 mV. When applied in rechargeable Zn-air batteries (RZABs), it delivers a peak power density of 136.4 mW cm −2 and a specific capacity of 722.9 mAh g⁻¹, outperforming commercial Pt/C and RuO 2 benchmarks. The assembled RZAB exhibits excellent cycling stability and energy efficiency, underscoring the promise of this catalyst system for practical implementation in high-performance, metal-air energy storage technologies.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
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IF 21.1
Kunpeng Gao,Fenghong Lu,Kaicai Fan,Xiaoyu Chen,Porun Liu,Youyi Li,Lingbo Zong,Lei Wang
Rational design and synthesis of electrocatalysts that efficiently catalyze oxygen reduction reaction (ORR) is critical to the development of fuel cells and Zn-air battery (ZAB). However, it remains the most significant obstacle due to the potential-dependent energy barrier for oxygen intermediates (OOH*, O* and OH*) adsorption/desorption on single atom active sites. Here we report a novel deprotonated 2-aminoterephthalic acid (H 2 BDC-NH 2 ) coordinated compound precursor-mediated method for synthesizing dual-atomic-site electrocatalyst (FeNi-DSAs/NSs) that facilitate ORR kinetics. The experimental and theoretical calculation results verify that the Fe and Ni cooperative effect induces a distinct negative shift of the d-band center for Fe, thereby reducing the adsorption strength of oxygen intermediates on Fe sites. Additionally, the introduced Ni species decrease the energy barrier of the rate-determining step (RDS), thus accelerating catalytic ORR process. Consequently, FeNi-DSAs/NSs exhibits excellent ORR performance in 0.1 M KOH solution with a very large half-wave potential (E 1/2 ) of 0.92 V and a remarkable lifespan, maintaining stability for over 90 h. In aqueous Zn-air battery (A-ZAB), this electrocatalyst enables a high-power density (254 mW cm −2 ), and can maintain stable charge/discharge for more than 1600 h with negligible potential gap fluctuation. Notably, for quasi-solid-state Zn-air battery (QSS-ZAB) with FeNi-DSAs/NSs, it shows excellent cycle life for over 110 h and high energy conversion efficiency at 0.5, 1.0, and 2.0 mA cm −2 , respectively. This work not only provides a novel design strategy for excellent catalysts, but also highlights the potential application of non-precious metal electrocatalysts in renewable energy conversion and storage apparatuses.
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