ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Ye Zhang,Kai Yan,Yi Jiang,Shengda Liu,Jiayin Zhan,Guixia Liu
Among strategies for protecting anodes in aqueous Zn-ion batteries (AZIBs), the slurry coating method is widely used to construct protective layers. However, conventional slurry coating processes often inevitably employ organic solvents, which contradicts the inherently environmentally friendly nature of AZIBs. This study proposes a “hydrophilic substrate modification–aqueous dispersion spraying” strategy for protective layer construction: a hydrophilic Zn foil (H–Zn) was prepared through a UV/O3 cleaning process, and carboxylated cellulose nanofibers (CNF) were spray-coated onto the H–Zn substrate using ultrapure water as the sole dispersion medium, successfully fabricating an H–Zn@CNF anode. The entire process was conducted without any organic solvents, offering distinct eco-friendly advantages. Symmetrical cell tests demonstrated excellent cycling stability of the H–Zn@CNF anode: it achieved stable cycling for 2500 h (vs bare Zn, 184 h) at 1 mA cm–2/1 mAh cm–2 and for 1250 h (vs bare Zn, 50 h) at 2 mA cm–2/1 mAh cm–2. The enhanced stability originates from the dual functions of the CNF protective layer: first, it isolates the Zn substrate from active water molecules in the electrolyte, suppressing hydrogen evolution reactions and the formation/accumulation of byproducts; second, the carboxyl groups on CNF molecular chains promote the desolvation of [Zn(H2O)6]2+, facilitating rapid and uniform deposition of Zn2+ and thereby inhibiting Zn dendrite growth. This study achieves a green preparation route for highly stable AZIB anodes and provides a novel approach for promoting the environmentally friendly fabrication and industrial application of aqueous batteries.
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Jie Guan,Lin Zhu,Fei Wang,Zhaoyi Xie,Zhongti Sun,Kan Zhang
Porphyrin organic frameworks (POFs) have garnered significant interest within the realm of organic framework materials, which is largely attributed to their conjugated molecular architecture and well-ordered pore channels. In this study, zinc metal was coordinated with porphyrin, and carbon nanotubes (CNTs) were employed as a template to synthesize the CNT@POF composite. The high conductivity and enhanced ion transport capability of CNTs were synergistically combined with the porphyrin system to construct an interfacial protective layer on the Zn anode for aqueous Zn-ion batteries (AZIBs). This present design is intended to inhibit undesirable parasitic reactions, namely, dendrite formation, chemical corrosion, electrode passivation, and hydrogen evolution. Long-term cycling results prove that the symmetric cell featuring this protective coating can operate stably for 1150 h while operated at 3 mA cm–2 and 1 mAh cm–2. Furthermore, after 4000 cycles at 5 A g–1, the full cell retains a specific capacity of 93.5 mAh g–1, equating to a capacity retention of 85.5%. The present research presents an interfacial modification strategy based on metal-coordinated porphyrin and template-assisted synthesis, providing a viable route to realizing dendrite-free Zn anodes for high-performing AZIBs.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 32
·25644-25659
·
IF 6.7
Liu Bingbing,Yang Tianshuo,Liu Shuangshuang,Pan Hong,Ren Xiaoxuan,Zhang Haotian,Xu Yuanhui,Gao Faming
A hierarchical Zn-substituted Fe 3 O 4 @NC/CuS@MoS 2 heterostructure was rationally
designed for
the electrochemical
detection of organophosphorus pesticides such as methamidophos and
dichlorvos. Hollow Fe 2 O 3 nanospheres were synthesized
hydrothermally, followed by Zn-substitution, polydopamine-derived
nitrogen-doped carbon coating, and in situ growth of CuS@MoS 2 nanosheets. The Zn-substitution modulates the electronic structure,
while the carbon network and the CuS@MoS 2 heterojunction
synergistically enhance charge transfer kinetics, increase the electroactive
surface area, provide abundant sites for acetylcholinesterase immobilization,
and ensure favorable biocompatibility. The resulting enhanced interfacial
electron transfer reduces the charge transfer resistance to 41.6 Ω.
The biosensor exhibits broad linear ranges for methamidophos (7.09
× 10 –7 μM to 7.09 × 10 –2 μM) and dichlorvos (4.53 × 10 –7 μM
to 4.53 × 10 –2 μM), with detection limits
of 8.7 × 10 –8 μM and 2.0 × 10 –7 μM, respectively. Real-sample analysis in Chinese
cabbage and apple yields recoveries of 96.36%–102.40% for methamidophos
and 95.92%–101.77% for dichlorvos, confirming its practical
viability for trace pesticide monitoring.
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CARBON
·
2026
·
IF 12.7
Jiale Ma,Ying Huang,Hanjie Huang,Meng Zong
The as-prepared N-doped porous carbon microwave absorption material derived from Zn-benzimidazole (Zn-BIM) exhibits excellent electromagnetic wave absorption performance, achieving a minimum reflection loss (RL m ᵢ n ) of −57.33 dB with an effective absorption bandwidth (EAB) of 8.72 GHz at a matching thickness of only 2.41 mm. • The effects of Zn 2+ /BIM molar ratio and concentrated NH 3 ·H 2 O dosage on the microstructure and electromagnetic wave absorption performance of Zn-BIM derived carbon are systematically investigated. • The ethanol solvent and strong alkaline conditions facilitate the formation of low-crystallinity Zn-BIM frameworks with abundant defects. Such structure endows the material with abundant defect sites, heterogeneous interfaces and porous structures, thereby enhance its electromagnetic wave absorption capability. • After high-temperature pyrolysis, the Zn-BIM derived N-doped porous carbon effectively optimizes impedance matching and strengthens dielectric loss, realizing synergistic regulation of microwave absorption performance through impedance matching, dipole polarization, interfacial polarization and conductive loss. With the rapid proliferation of electronic devices and microwave communication technologies, severe electromagnetic interference (EMI) and electromagnetic radiation pollution have become pressing issues, urgently requiring the development of high-efficiency microwave absorbers with broad bandwidth and strong attenuation capability. Metal-organic frameworks (MOFs)-derived carbon materials have emerged as promising candidates for advanced microwave absorption by virtue of their tunable morphology, large specific surface area, and controllable heteroatom doping. Herein, hierarchical N-doped porous carbon microwave absorbers were successfully fabricated via a facile ethanol-mediated solvothermal route combined with high-temperature pyrolysis, using a Zn-benzimidazole (Zn-BIM) coordination polymer as the precursor, while concentrated NH 3 ·H 2 O served simultaneously as the alkaline regulator and N source. The microstructure, carbon defect density, and microwave absorption performance were systematically optimized by modulating the Zn/BIM molar ratio and NH 3 ·H 2 O dosage. The optimized sample delivered exceptional microwave absorption performance at a Zn/BIM molar ratio of 1:2 and NH 3 ·H 2 O dosage of 9 mL, achieving a minimum reflection loss (RL min ) of −57.33 dB at 2.41 mm and a broad effective absorption bandwidth (EAB) up to 8.72 GHz, well satisfying the requirements of practical electromagnetic protection applications. The superior absorption performance originates from the synergistic contribution of optimized impedance matching, conductive loss, dipole polarization, and abundant interfacial polarization induced by the hierarchical porous structure and N-doping. This facile and eco-friendly strategy provides a feasible reference for the rational design of high-efficiency microwave absorbers toward 5G/6G electromagnetic protection, aerospace radar stealth, and precision electronic device interference shielding. In this work, N-doped porous carbon materials were fabricated via high-temperature pyrolysis of Zn-BIM coordination polymers, using ethanol as the solvent and concentrated NH 3 ·H 2 O as the alkali source. The molar ratio of Zn 2+ to BIM ligand and the dosage of NH 3 ·H 2 O were systematically regulated. Experimental results reveal that the as-prepared material delivers excellent microwave absorption performance. When the molar ratio of Zn 2+ to BIM ligand is 1:2 and the NH 3 ·H 2 O dosage of 9 mL. Its minimum reflection loss (RL m ᵢ n ) reaches −57.33 dB, and the effective absorption bandwidth is up to 8.72 GHz. The superior absorption performance originates from the synergistic effect of multiple scattering induced by the structure defects. This work provides a new strategy to design lightweight microwave absorbers with strong absorption and broad bandwidth. Download: Download high-res image (417KB) Download: Download full-size image
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Jundi Xiong,Jian Yu,Yuan Wang,Shaojun Yuan
Carbon aerogels are emerging as promising functional materials; however, their application in adsorption and energy storage is hindered by the inherently low density of active sites. Herein, ZIF-8/N-doped alginate-derived carbon aerogels (ZSCA) were synthesized via in situ growth of ZIF-8 on freeze-dried alginate aerogel precursors and subsequent treatment of pyrolysis and chemical activation for high-performance CO2 capture and supercapacitor applications. In this strategy, ZIF-8 served as a structural template, alginate provided a biomass-derived carbon source, polyethylenimine (PEI) acted as a nitrogen dopant and a costructure director, and potassium citrate functioned as the activating agent. The optimized ZSCA-550-1 (pyrolyzed at 550 °C with an activator-to-precursor mass ratio of 1:1) showed a high specific surface area of 811.34 m2/g, a micropore volume of 0.31 cm3/g, and a nitrogen content of 8.77 wt %. At 273.15 and 298.15 K (1 bar), ZSCA-550-1 achieved excellent CO2 adsorption capacities of 5.96 and 4.40 mmol/g, respectively, outperforming both SA-550-1 (2.79 mmol/g) and ZPC-550-1 (3.20 mmol/g). It also showed high CO2/N2 selectivity (35.0) and retained 94% capacity after 10 adsorption–desorption cycles. As a supercapacitor electrode, ZSCA-650-1 delivered 214 F/g at 1 A/g, with 88.6% capacitance retention over 5000 charge–discharge cycles at 10 A/g. This study introduces a sustainable strategy for the design and engineering of biomass-derived carbon aerogels with dual functionality in CO2 capture and electrochemical energy storage.
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ChemSusChem
·
2026
·Vol. 19
·期 18
·e71090
·
IF 5.9
Yang-Yu Sun,Bao-Hong Xu,Yan-Xi Chen,Ya-Qi Wang,Jun-Jun Liu,Ming-Xiao Deng,Hai-Zhu Sun
Iodine (I 2 ) cathodes for aqueous Zn–I 2 batteries suffer from sluggish redox kinetics and severe polyiodide shuttling, resulting in poor utilization and cycling stability. Herein, graphitic nitrogen-enriched carbonized polymer dots (CPDs) with a core–shell structure are integrated with a self-supporting porous carbon framework to construct a graphitic nitrogen-regulated porous carbon host. The porous framework provides abundant space for iodine accommodation and accessible pathways for mass transport, while CPDs introduce graphitic-N sites that strengthen iodine–host interactions and facilitate interfacial electron transfer. Their cooperative action favors a dominant direct I 2 /I − conversion pathway with substantially suppressed accumulation of soluble polyiodide species, thereby enabling fast iodine redox kinetics and excellent cycling stability. Benefiting from these synergistic effects, the optimized PCF-CPDs/I 2 -0.2 cathode delivers a high specific capacity of 146.1 mAh g −1 at 0.3 A g −1 with 99.6% capacity retention over 500 cycles. At 1 A g −1 , it maintains 117.5 mAh g −1 with 87.1% retention after 4000 cycles. This work demonstrates that coupling porous confinement with CPDs-mediated interfacial regulation provides an effective strategy for developing high-performance Zn–I 2 batteries. Graphical Graphitic-N-enriched carbonized polymer dots (CPDs) are integrated into a self-supporting porous carbon framework (PCF) to couple porous confinement with CPDs-mediated interfacial regulation. The resulting PCF-CPDs/I 2 -0.2 cathode substantially suppresses detectable accumulation of soluble polyiodide species, favors a predominantly direct I 2 /I − conversion pathway, facilitates interfacial charge transfer, improves iodine utilization, and enables long-term cycling stability in aqueous Zn–I 2 batteries.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yue Li,Ping Liu,Xiaoxue Han,Longyu Guo,Haiyan Jiang,Yongchao Ma
A heterojunction with g-C 3 N 4 @Zn/Eu-MOF covalent interface was synthesized. • g-CN@MOF can be used for photocatalytic degradation and fluorescence detection of ofloxacin. • Efficient removal of ofloxacin in milk by g-CN@MOF foam. • g-CN@MOF can detect ofloxacin residues in milk through smartphone-assisted color recognition. Ofloxacin (OFL) is widely used in medicine and animal husbandry, and its residues in milk raise substantial food-safety concerns. Herein, a dual-functional covalently coupled g-C 3 N 4 @Zn/Eu-MOF composite (g-CN@MOF) was constructed through a one-pot hydrothermal route. FTIR and XPS analyses indicated the formation of C N C O linkages between g-C 3 N 4 and the MOF, yielding an interfacially coupled type-II heterojunction that promoted charge separation. The optimized g-CN@MOF-30 achieved 69.21% removal of 10 mg L −1 OFL within 120 min under visible light, with •O 2 − and •OH identified as the dominant reactive species. Meanwhile, the fluorescence intensity ratio F 440 /F 595 showed a linear response to OFL over the range of 0–100 μM, affording a detection limit of 0.011 μM through an IFE-dominated ratiometric sensing mechanism. After immobilization in sodium alginate foam, the composite exhibited convenient recyclability and enabled OFL removal from pretreated milk samples, while smartphone-based RGB analysis provided rapid visual semi-quantification with recoveries ranging from 100.3% to 109.9%. Download: Download high-res image (269KB) Download: Download full-size image
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ACS Applied Energy Materials
·
2026
·
IF 5.5
Yu Huan,Li Haoran,Sun Shichao,Wang Xin,Chen Zhongwei
Rechargeable aqueous Zn metal batteries have emerged as compelling options for grid-scale energy storage applications, benefiting from a favorable combination of economic viability, operational safety, and excellent rate performance. The lifespan and Coulombic efficiency (CE) of Zn metal anodes (ZMAs) are constrained by dendrite growth and side reactions. Herein, we report a freestanding host for ZMAs based on N-doped thorn-like carbon fibers derived from a covalent organic framework (COF) and embedded with Cu nanoparticles (COF-NCF@Cu). The 3D macroporous architecture with thorn-like COF-derived N-doped carbon nanoarrays contributes to reduced current density and effectively mitigates electrode volume variation throughout cycling. Furthermore, the zincophilic Cu nanoparticles embedded in the N-doped carbon matrix provide homogeneous nucleation sites that significantly lower the overpotential for zinc nucleation, thereby promoting subsequent uniform zinc deposition. Accordingly, the COF-NCF@Cu host delivers exceptional reversibility, affording stable Zn plating/stripping for over 2800 h at 10 mA cm –2 , and the corresponding full cell with a COF-NCF@Cu-Zn anode sustains 6000 cycles with negligible capacity decay.
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Catalysts
·
2026
·Vol. 16
·期 5
·460
·
IF 4.5
Shaomeng Huang,Yiqing Xu,Feijian Jing,Liping Wang,Jiawen Sheng,Qiongqiong He
In the process of pollutant degradation by activating peroxymonosulfate (PMS) with carbon-based Fenton-like catalysts containing Fe as the active site, the influence of Zn atoms on the system has rarely been studied. In this study, by regulating the introduction of Zn sources, Fe-Zn-C and Fe-C catalysts were successfully synthesized for activating PMS to degrade butyl xanthate (BX). The degradation experiment results showed that compared to the Fe-C system, the doping of Zn increased the degradation rate of BX in the Fe-Zn-C system by 10.66%, reaching 91.19% within 120 min. Moreover, by optimizing the reaction conditions, the highest BX degradation efficiency of 96.54% was achieved within 30 min. Through instrumental analysis, Fe and Zn elements were found to exist on the surface of the catalysts in the form of Fe2+Fe3+2O4and ZnO crystals, and the catalytic oxidation reaction was dominated by non-free radical pathways, including1O2and direct electron transfer pathways. No free radicals were produced during the reaction, and it was speculated that Zn atoms played the role of an electron bridge in the reaction system, mediating electron transfer and enhancing catalytic performance through their synergistic effect with Fe. Comprehensive stability evaluation indicated that Fe-Zn-C ensures continuous catalytic activity and ecological safety with a low dissolution rate in aqueous solution. This study provides a new approach for the design of Fenton-like catalysts and the induction of non-radical pathways.
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Science Advances
·
2026
·Vol. 12
·期 19
·
IF 13.9
Chuan Li,Xiu Hu,Rong Zhang,Shaoce Zhang,Huilin Cui,Qinshun Nian,Yuwei Zhao,Chunyi Zhi
In 1952, the first commercially alkaline Zn||MnO 2 primary battery was developed, which is based on Mn 4+ /Mn 3+ redox reactions (MnO 2 ↔Mn 2 O 3 ). Subsequently, the single-electron (Mn 3+ /Mn 2+ and Mn 7+ /Mn 6+ ) and two-electron (Mn 4+ /Mn 2+ ) redox reactions of Mn compound (Mn-Comp) were achieved in aqueous Zn-based batteries. After that, however, the new Mn multivalent change redox reaction was no longer observed. In this study, we report a neutral superhydrophilic hydrogel electrolyte that activates a Mn 2+ /Mn 7+ conversion reaction (Mn 2+ ↔MnO 4 − ). This advance is attributed to an expanding electrochemical stability window and high Mn 2+ reaction activity. This enables a discharge plateau of ≥2.2 V in aqueous Zn metal batteries. The high reversibility of Mn 2+ /Mn 7+ conversion reactions during cycling was achieved by incorporating chelation groups in the designed hydrogel electrolyte, which effectively stabilizes the MnO 4 − . The aqueous Zn||Mn-Comp battery with a 2.2-V discharge plateau operates stably for ≥360 hours.
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高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Jiaxin Zhang,Na Li,Yao Liu,Rongjian Ding,Wenwen Lu,Chengwen Shang,Mengyi Pei,Riguang Zhang,Yanling Zhai,Ting Zhang
The cascade synthesis of imines from alcohols and nitroarenes via catalytic transfer hydrogenation (CTH) is a highly sustainable process. However, developing efficient non-noble metal catalysts remains a formidable challenge due to the kinetic mismatch of sequential reaction steps and sluggish active hydrogen transfer. Herein, we propose a novel spatial functional partitioning catalyst design paradigm and construct a highly efficient diatomic catalyst featuring atomically dispersed ZnN 4 and NiN 4 sites spatially bridged by nitrogen atoms. Experimental and theoretical investigations reveal a precise dual-site cooperative mechanism of the unique Zn-N-Ni constructure. Specifically, the highly electron-deficient Zn sites (+1.14 |e| vs . +0.83 |e| of Ni) preferentially activate the hydroxyl group of benzylalcohol to generate active H* due to a lower dehydrogenation energy barrier (89.6 kJ mol −1 vs. 111.6 kJ mol −1 for Ni). Concurrently, the Ni sites, featuring a higher d -band center (–1.47 eV vs. –5.50 eV for Zn), facilitate nitrobenzene hydrogenation with a significantly lower barrier (73.7 kJ mol −1 ), while the bridging N serves as an H* adsorption site. Consequently, this synergistic configuration integrates single-atom efficiency with dual-site cooperation, achieving 96% nitrobenzene conversion and 90% imine selectivity. This work not only elucidates the atomic-level hydrogen transfer mechanism in cascade reactions but also establishes a rational design principle for complex tandem catalytic systems. Atomically dispersed ZnN 4 and NiN 4 sites linked by bridging N enable cooperative catalysis where Zn dehydrogenates alcohols and Ni extracts H from adjacent N-H for nitroarene hydrogenation toward imines. Download: Download high-res image (64KB) Download: Download full-size image
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Siqi Shen,Qingpeng Wang,Haiyan Qi,Tonghui Yi,Tao Jing,Jun Li,Qingxin Zeng,Yang Gao,Hongxu Zhao
The new Zn-CDs were synthesized with a fluorescence quantum yield of 31.72%. • Zn-CDs exhibited strong antibacterial activity against both E. coli and S. aureus. • Zn-CDs were successfully utilized for MTZ detection by IFE and static quenching. Bacterial infections pose a major global health threat, highlighting the need for the development of effective antibacterial materials. Metronidazole (MTZ), a widely used antimicrobial agent, has raised concerns due to its misuse, emphasizing reliable detection methods. In this study, we synthesized zinc-doped carbon dots (Zn-CDs) via a hydrothermal method using hexahydrate zinc nitrate and histidine as precursors. Zn-CDs were thoroughly characterized for their optical properties, antibacterial activity, cytotoxicity, and potential for MTZ detection. Zn-CDs displayed a uniform spherical morphology with an average particle size of 4.65 nm and excitation-dependent fluorescence. Antibacterial assays revealed their effectiveness against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ), with a minimum inhibitory concentration (MIC) of 313 μg/mL for both bacterial strains. Its antibacterial mechanism relied on the damage of bacterial cell membranes. Furthermore, Zn-CDs exhibited low cytotoxicity and hemolytic activity showing their excellent biocompatibility. Zn-CDs also displayed remarkable photostability, salt tolerance, and pH adaptability, making them suitable for diverse environments. For MTZ detection, Zn-CDs exhibited high specificity and anti-interference properties, with the fluorescence quenching mechanism attributed to the static quenching and internal filter effect (IFE). Furthermore, Zn-CDs were successfully applied to detect MTZ residues in honey, with recovery rates ranging from 92.3% to 101.7%. Overall, this study highlights the dual functionality of Zn-CDs as antibacterial agents and fluorescence-based sensors, offering promising applications in environmental monitoring and food safety analysis. Download: Download high-res image (109KB) Download: Download full-size image
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