ELECTROANALYSIS
·
2026
·Vol. 38
·期 6
·e70175
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IF 2.6
Hongying Wang,Tingting Zhao,Minzi Li,Shaohong Zhang,Zhijuan Wang
Low-cost, highly active and durable bifunctional oxygen electrocatalysts are critical for the commercial development of rechargeable zinc–air batteries (ZABs). Here, we report a trimetallic Fe/Co/Zn codoped nitrogen carbon catalyst (Fe 1 -CoZnNC-800) derived from a bud-like zeolitic imidazolate framework (ZIF-12@ZIF-11) obtained via the incorporation of Fe 2+ into the parent MOF. Pyrolysis at 800°C transforms the precursor into an open, flower-like carbon architecture that exposes abundant M–N x (M = Fe, Co) active sites while retaining a hierarchical meso-/macropore network (Brunauer–Emmett–Teller, BET ≈320 m 2 g − 1 ). In 0.1 M KOH, Fe 1 –CoZnNC-800 delivers a half-wave potential of 0.81 V for the oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER) overpotential of 360 mV at 10 mA cm −2 , outperforming most nonprecious benchmarks with robust stability and good methanol tolerance. When integrated into a ZAB air cathode, Fe 1 –CoZnNC-800 affords a peak power density of 394 mW cm −2 and sustains stable charge/discharge cycling for 275 h at 10 mA cm −2 without obvious voltage fade, demonstrating its potential as a platinum-free bifunctional cathode for next-generation metal–air batteries.
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Yu Liao,Yaowei Liu,Yang Li,Linjuan Zhang,Jian-Qiang Wang,Sivaprakash Sengodan,Bingbing Niu,Guntae Kim
Carbon capture, utilization, and storage (CCUS) is recognized as a critical pathway for decarbonization, but current approaches are limited by energy-intensive operation and suboptimal conversion efficiency. In this context, the Zn-CO2 system holds immense promise for simultaneous electricity generation, green hydrogen production, and efficient CO2 utilization. However, further improvement of the overall system efficiency hinges on enhancing the hydrogen evolution reaction (HER) in quasi-neutral media. Herein, we report a Mn-doped cobalt phosphide (Mn-CoP/NF) catalyst grown on nickel foam via a facile one-step electrodeposition, designed to promote water dissociation and enhance HER activity in neutral electrolytes. Structural characterizations reveal that Mn doping induces an amorphous transformation with a cauliflower-like morphology, markedly increasing the electrochemical active surface area (ECSA) and exposing abundant active sites. XPS analysis further confirms that Mn functions as an electron donor, generating electron-rich Co/P surfaces that favor optimized adsorption of reaction intermediates. Kinetic analysis demonstrates that the incorporation of oxyphilic Mn substantially lowers the Tafel slope from 158.7 mV dec -1 to 62.0 mV dec -1 , evidencing accelerated water dissociation in the Volmer step. Density functional theory (DFT) calculations reveal that Mn incorporation lowers the water dissociation energy barrier and optimizes the hydrogen adsorption free energy (ΔGH*). Consequently, the Mn-CoP/NF catalyst exhibits outstanding HER activity in saturated KHCO3 solution, with an overpotential of 149.9 mV at 50 mA cm-2 , similar to commercial 1 mg cm-2 Pt/C (146.4 mV). Furthermore, the Zn-CO2 system assembled with Mn-CoP/NF as the HER electrode achieves a maximum current density of 378 mA cm -2 and sustains stable operation for over 300 hours at -100 mA cm-2 .
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yi-bo Li,Gui-yong Xiao,Kang-qing Zuo,Zi-han Xu,Wen-ju Qiu,Ning-bo Li,Yu-peng Lu
The construction of multifunctional phosphate coatings on metallic implants has been proven to possess remarkable potential in promoting bone regeneration. However, systematic investigations into element-doped manganese phosphate (MnP) coatings on titanium (Ti) remain scarce. In this study, phosphate chemical conversion (PCC) was employed to fabricate a series of MnP coatings by doping with varying concentrations of Calcium (Ca) and Zinc (Zn) ions. The results showed that the introduction of Ca 2+ and Zn 2+ effectively refined the MnP crystals and subsequently induced the transformation of the original prismatic crystal structure into unique layered and block-like micro/nano structures. Structural analysis indicated that Ca 2+ and Zn 2+ replaced Mn 2+ in the crystal lattice, with Zn 2+ potentially inserting into the hydroxyl column sites, forming stable chemical bonds. Moreover, Mn 2+ could further replace Zn 2+ in zinc phosphate (ZnP), leading to the formation of manganese-zinc phosphate (MnZnP). The doped coatings exhibited high bonding strength, appropriate surface roughness, and improved wettability. In vitro biological evaluations demonstrated that the Ca and Zn-doped MnP coatings on Ti substrates showed superior cell adhesion, proliferation, and osteogenic differentiation compared to the MnP coating. This study provides a feasible strategy for surface functionalization of Ti-based implants and efficient repair of bone defects.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Kehui Qi,Peng Lu,Xuehui Zhang,Yuxiang Liu,Yue Liu,Lu Li
Single-atom catalysts (SACs) are highly regarded for their high atomic efficiency and outstanding catalytic performance. However, the stable anchoring of single atoms and the precise regulation of their multiple valence states are still challenges. To address this challenge, a structurally stable and valence-tunable multivalent zinc single-atom catalyst was successfully synthesized according to a thermodynamically-driven lattice substitution strategy. Experimental and theoretical analyses indicate that zinc single atoms precisely occupy a pair of adjacent Cu + vacancies in the Cu 2 O lattice with a spacing of approximately 2.9 Å, forming Zn-O-Cu units. This structure establishes an electron transport channel mediated by oxygen bridges, facilitating strong electron coupling between the 3d orbitals of Zn and Cu. This strong coupling results in the formation of a stable multivalent Zn δ+ (0＜δ < 2) state, which is identified as the primary origin of the catalyst’s high activity. Benefiting from the unique electronic synergistic effect of the Zn-O-Cu units and the resulting promotion of oxygen vacancy formation, this catalyst enables carboxylic acid molecules to be adsorbed and activated in a bridging mode. Through this adsorption configuration, the α-C–C bond becomes polarized and significantly weakened, setting the stage for its selective cleavage. The Zn δ+ -O-Cu catalyst showed remarkable catalytic performance in the selective cleavage of the α-C–C bond in fatty acids for alkane production, achieving up to 96.89% n-C n-1 alkane selectivity. Furthermore, the Zn δ+ -O-Cu catalyst demonstrated excellent versatility across fatty acids with varying carbon chain lengths. These results demonstrate the significant promise of this strategy not only for advancing the practical utilization of biomass feedstock with high fatty acid (FA) content, but also for establishing an efficient and novel pathway toward long-chain alkane production.
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高影响因子
COMPOSITES PART B-ENGINEERING
·
2026
·
IF 14
Yuqi Feng,Yu Li,Raymond H.W. Lam,Cheuk Lun Chow,Denvid Lau
Wood fibers offer promising sustainable alternatives to synthetic options; however, their susceptibility to mold limits their widespread adoption. Here we report a facile strategy to fabricate anti-mold wood fibers via in-situ growth of Zn-Al layered double hydroxides (LDHs) followed by stearic acid (STA) post-coating. Electrostatic interactions drive the adhesion of LDH to wood, while STA provides surface hydrophobicity, as revealed by molecular dynamics simulations. The resulting wood fibers exhibit remarkable anti-mold activity against common fungal species, including Aspergillus , Trichoderma , and Penicillium , showing clear inhibition zones and no fungal growth in accelerated tests. Further analyses reveal that the direct antifungal effect arises from electrostatic absorption, oxidative stress induction, and metal ions release, while the indirect effect is due to hydrophobicity. Our findings demonstrate a scalable and cost-effective approach for functionalizing natural fibers to combat microorganisms, broadening the application scope of cellulose-based materials in construction, packaging, and biocomposites. We anticipate this work to be a starting point for developing wood fiber composites with intrinsic mold resistance for health- and eco-conscious applications.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Shiqing Yu,Yong Zheng,Yuze Du,Xi Zhang,Kai Wang,Juncheng Yao,Guangyu Wang
Antireflective coatings (ARCs) with self-cleaning and antistatic functionalities were fabricated using the sol-gel method with a Ti-Zn modified SiO 2 sol. Chain-like Ti-Zn composites were incorporated into SiO 2 nanoparticles exhibiting a dual-size distribution, forming a cross-linked composite structure that enhanced coating hardness while maintaining high transmittance and imparting multifunctional properties. The effects of Ti-Zn sol content on the surface morphology, microstructure, optical performance, mechanical strength, and wettability of the coatings were systematically investigated. The resulting coatings exhibited a hardness of 3H, an adhesion rating of 5B, and a solar-weighted transmittance (T sw ) of 95.31% across the wavelength range of 380–1100 nm, significantly higher than that of bare K9 glass (91.38%). Moreover, the introduction of the Ti-Zn composite sol imparted superhydrophilic properties to the coating (water contact angle, WCA = 1.8°) and facilitated the formation of continuous conductive pathways, reducing the surface resistivity to 3.61 × 10 8 Ω/□. This effectively suppressed electrostatic charge accumulation, thereby mitigating dust deposition. Furthermore, the coating demonstrated excellent multifunctional performance. A self-cleaning efficiency of 97.10% was achieved with a negligible loss in T sw (0.03%), while the haze value remained below 2% during antifogging tests. Additionally, the dust deposition density was reduced to 40.48% of that of bare glass, confirming the enhanced anti-dust performance.
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CARBON
·
2026
·
IF 12.7
Qilin Chang,Geoffrey I.N. Waterhouse,Zhiming Zhang,Liangmin Yu
Alginate-derived lightweight porous carbons (ZnAc-C) were successfully prepared from Zn 2+ -alginate hydrogels by freeze-drying and carbonization. During carbonization of the aerogels, the Zn 2+ was in-situ transformed into nano Zn, with the evaporation of the Zn generating abundant micropores in the ZnAc-C products. By adjusting the amount of zinc acetate used to prepare the aerogels and the carbonization temperature, ZnAc-C materials with different porosities were obtained. Benefitting from the well-developed porous structure and the moderate graphitization degree, ZnAc-C carbonized at 750 °C and 800 °C delivered excellent electromagnetic wave (EMW) absorption performance. At a low filling ratio (3 wt%), their maximum reflection loss reaches −53.8 dB and −46.8 dB, and their effective absorption bandwidth reaches 5.0 GHz and 4.5 GHz, respectively. This research identifies a simple low-cost preparation route towards lightweight porous carbon with outstanding electromagnetic wave absorption performance. Download: Download high-res image (468KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Hao Zheng,Cong Guo,Lin Lin,Hongwei Wang,Jiayue Zhang,Zeyi Jiang,Zhuojian Liang,Zhenghao Chen,Nien-Chu Lai
Efficient and durable bifunctional oxygen electrocatalysts represent a cornerstone for high-energy-density rechargeable metal-air batteries. Herein, we report a facile one-step pyrolysis synthesis of nitrogen-doped graphite carbon-encapsulated Fe/Fe 3 C heterojunction nanoparticles (Fe/Fe 3 C@NC) with a well-defined core-shell architecture. The Fe/Fe 3 C heterojunction exhibits prominent interfacial electron transfer from Fe to Fe 3 C. This electron-rich Fe 3 C phase enables superior adsorption modulation toward oxygen intermediates, thereby endowing the catalyst with exceptional bifunctional oxygen electrocatalytic activity. In alkaline media, Fe/Fe 3 C@NC outperforms platinum-group metal (PGM) benchmarks in both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), achieving a smaller OER/ORR overpotential difference than Pt/C + RuO 2 . When integrated into aqueous and flexible zinc-air batteries, Fe/Fe 3 C@NC maintains an impressive 92.6% of its initial round-trip efficiency (RTE) over 1900 h (5700+ cycles), far exceeding the PGM-based control (23.3% RTE decay within 50 h, 150 cycles). Structural characterizations confirm that Fe/Fe 3 C@NC retains its morphology and crystallinity after prolonged cycling, highlighting the critical role of the core-shell architecture in preserving structural/compositional integrity. This work not only elucidates the pivotal role of the Fe/Fe 3 C heterojunctions in enhancing bifunctional oxygen electrocatalysis but also provides a scalable carbon-encapsulation strategy for designing low-cost, high-performance, and long-lifespan non-noble metal bifunctional catalysts for next-generation metal-air batteries.
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Xuemei Xiao,Wei Shao,Xiaoman Ye,Sheng Liu
The practical deployment of aqueous zinc-ion batteries is severely hindered by parasitic reactions and dendrite growth at the zinc metal anode, making advanced electrolyte engineering a critical pursuit. In this work, an efficient camphor-derived electrolyte additive, sodium camphorsulfonate, was developed to significantly improve the electrochemical performance of aqueous zinc-ion batteries by synergistically regulating the Zn2+ ion solvation microenvironment and directing the strong Zn(002) deposition texture. The efficacy of the trace sodium camphorsulfonate additive is demonstrated by an ultralong cycling lifespan of 7450 h and a cumulative plated capacity of 11.2 Ah cm–2 for Zn||Zn symmetric cells (3 mA cm–2, 1 mAh cm–2), and is further corroborated by the 72.5% capacity retention of Zn||V2O5·nH2O full cells after 2000 cycles at 2 A g–1. This study establishes a paradigm for harnessing natural compounds in electrolyte engineering, thereby guiding the development of sustainable, high-performance batteries.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Honghao Liu,Libo Wang,He Zhou,Zhiyuan Wang,Dejian Xu,Ying Xin,Huajie Zhang,Ang Li,Chuan Li,Qingshan Zhao,Mingbo Wu
Low-temperature pyrolysis at 700°C retains atomically dispersed Zn species. • The preferential role of Co–N 4 toward H 2 dissociation versus Zn–N 4 toward –NO 2 adsorption in dual-atomic sites. • Co 1 Zn 1 @NC shows exceptional selectivity and stability for nitroarene hydrogenation. • The catalyst can be magnetically recycled and reused for multiple cycles. The selective hydrogenation of nitroarenes to anilines is a cornerstone chemical transformation, yet traditional catalysts suffer from activity-selectivity trade-offs due to over-hydrogenation and C–X bond hydrogenolysis. Herein, we present a Co–Zn dual-atom catalyst (Co 1 Zn 1 @NC) via mild pyrolysis (700°C) of CoZn-ZIF, where Zn volatilization generates hierarchical porosity while retaining atomically dispersed Zn sites. The catalyst features an armor architecture with Co–N 4 and Zn–N 4 sites anchored on N-doped carbon encapsulating a magnetic Co nanoparticle core. In p -chloronitrobenzene hydrogenation (70°C, 1 MPa H 2 ), it delivers 99.9% conversion and 99.9% selectivity to p -chloroaniline, outperforming Co 1 @NC (42.5% conversion) and inactive Zn 1 @NC. The catalyst exhibits broad substrate tolerance and stable performance over 8 cycles with magnetic recovery. Density functional theory reveals Co–N 4 lowers H 2 activation barrier, while Zn–N 4 selectively binds nitro groups over amino groups, accounting for the exceptional performance. This Co–Zn synergy establishes a robust, magnetically recoverable platform for sustainable fine chemical synthesis. Download: Download high-res image (302KB) Download: Download full-size image
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Yi Xiang,Zidan Mei,Lulu Zhou,Yue Li,Yongdong Chen
The hydrogenation of CO2 to light olefins is a promising method for CO2 resource utilization. Tandem catalysts composed of metal oxides and zeolites have been widely studied for the hydrogenation of CO2 to light olefins, but there are bottleneck problems in terms of CO2 conversion and light olefins yield. ZnO-ZrO2 catalyst is extensively employed in CO2 hydrogenation because of its excellent stability at high temperatures, but there is still a "seesaw" problem between the CO2 conversion and light olefins selectivity. In addition, the synergetic effect between Zn and Zr sites on the reaction process remains unclear. In this work, a series of ZnO-ZrO2 catalytic materials with various Zn: Zr ratios were synthesized by co-precipitation, and the interaction between Zn and Zr could be regulated by altering the Zn: Zr ratio. XRD and TEM results confirmed the successful synthesis of ZnO-ZrO2 composite oxide and the existence of a certain interaction between Zn and Zr. CO2-TPD, H2-TPR and XPS results indicated that the interaction between Zn and Zr could improve the hydrogenation capacity of the catalyst and also induce the generation of abundant oxygen vacancies to effectively promote the adsorption and activation of CO2. Catalytic performance results showed that ZnO-ZrO2(1:4)/SAPO-34 exhibits the best CO2 to light olefins activity with a CO2 conversion rate of 26.4% and a C2=-C4=selectivity of 72.6%. This work provides a feasible strategy for rational designing and optimizing of CO2 hydrogenation catalyst.
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高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Biying Zhong,Dingjun Wang,Xiaotong Lai,Xiao Huang,Qiaowen Wang,Xinghan Ren,Xinyue Shen,Li Liu,Tiantian Liu
In recent years, the burden of disease caused by Staphylococcus aureus and Escherichia coli infections has been significant. Currently, the development of antibiotics faces severe challenges, as the long-term misuse of traditional antibiotics has accelerated the evolution of resistance, while the pace of novel drug development lags far behind the rate of bacterial evolution. Therefore, the development of new antibacterial agents is urgently needed. This study presents a metal-organic framework composite material loaded with zinc oxide and kaempferol (MIL-101(Fe)@Zn-KF). The prepared material was characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-Vis), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and zeta potential analysis. Peroxidase-like activity, biosafety and antioxidant property of the composite were evaluated. The in vitro antibacterial effect of the composite against Staphylococcus aureus and Escherichia coli was investigated using the plate coating method and bacterial growth curves experiment. The synthesized material exhibited multifunctionality, such as enzyme-like activity, antibacterial property and antioxidant capacity. Compared to MIL-101(Fe)@Zn, MIL-101(Fe) and kaempferol alone, the MIL-101(Fe)@Zn-KF composite demonstrated superior antibacterial effect, with inhibition rate of 98.76% and 98.34% against Staphylococcus aureus and Escherichia coli , respectively. MIL-101(Fe)@Zn-KF was able to catalyze hydrogen peroxide to generate reactive oxygen species, which synergized with the composite itself to exert bactericidal effect. Systematic evaluation of the cytotoxicity and hemolytic effect of MIL-101(Fe)@Zn-KF revealed the excellent biosafety and clinical potential of the composite. In summary, the composite material synthesized in this study combined peroxidase-like activity, antibacterial performance, antioxidant capacity and excellent biocompatibility, providing new insights for the development of efficient and safe antibacterial materials.
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