JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 4
·2614-2625
·
IF 2.1
Jiang Xi,Zhang Yun,Ding Shihua,Song Tianxiu,Hou Zhengpeng,Xiao Junwen,Wang Yarong
MO-ZrO 2 -Ta 2 O 5 (M = Zn, Co) ceramics were prepared by solid-phase reaction method. Thermo-gravimetric-differential thermal behavior, crystal structure, and microwave dielectric properties of ZnO-ZrO 2 -Ta 2 O 5 and CoO-ZrO 2 -Ta 2 O 5 ceramics were compared in this paper. Both of them exhibited monoclinic wolframite structure. Densest microstructures with uniform grains were obtained at 1400°C and 1425°C in the cases of M = Zn and Co, respectively. ZnO-ZrO 2 -Ta 2 O 5 and CoO-ZrO 2 -Ta 2 O 5 exhibited comparable ε r ~ 20.26 and 24.30, while the former had Q × f ~ 60, 983 GHz and the latter had Q × f ~ 95,300 GHz. The grain growth exponent and activation energy obtained from the phenomenological kinetic equation indicated the growth process of ceramics. The grain growth of Zn-based ceramic was dominated by interfacial reactions and lattice diffusion. For the other one, the grain growth mechanisms were grain boundary diffusion and lattice diffusion at high temperatures. The grain growth progress of them both affected by lattice diffusion. The growth process of ZnO-ZrO 2 -Ta 2 O 5 ceramics was faster than that of CoO-ZrO 2 -Ta 2 O 5 ceramic. However, the grains were overgrown and grew slowly at 1425°C and 1450°C, which was caused by the excessive high temperature.
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Nano-Micro Letters
·
2020
·Vol. 13
·期 1
·1-15
·
IF 12.264
Tian Yuhui,Xu Li,Li Meng,Yuan Ding,Liu Xianhu,Qian Junchao,Dou Yuhai,Qiu Jingxia,Zhang Shanqing
Interface engineering of heterogeneous CoS/CoO nanocrystals and N-doped graphene composite facilitates high-performance oxygen reduction reaction and oxygen evolution reaction.
Density functional theory calculations and experimental results confirm the enhanced electrocatalytic performances via the proposed interface engineering.
The bifunctional oxygen electrocatalyst exhibits excellent performances in rechargeable Zn–air batteries.
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Journal of Energy Chemistry
·
2023
·
IF 13.1
Qi Deng,Fangzhong Liu,Xiongwei Wu,Changzhu Li,Weibin Zhou,Bei Long
The development of aqueous battery with dual mechanisms is now arousing more and more interest. The dual mechanisms of Zn 2+ (de)intercalation and I − /I 2 redox bring unexpected effects. Herein, differing from previous studies using ZnI 2 additive, this work designs an aqueous BiI 3 -Zn battery with self-supplied I − . Ex situ tests reveal the conversion of BiI 3 into Bi (discharge) and BiOI (charge) at the 1st cycle and the dissolved I − in electrolyte. The active I − species enhances the specific capacity and discharge medium voltage of electrode as well as improves the generation of Zn dendrite and by-product. Furthermore, the porous hard carbon is introduced to enhance the electronic/ionic conductivity and adsorb iodine species, proven by experimental and theoretical studies. Accordingly, the well-designed BiI 3 -Zn battery delivers a high reversible capacity of 182 mA h g −1 at 0.2 A g −1 , an excellent rate capability with 88 mA h g −1 at 10 A g −1 , and an impressive cyclability with 63% capacity retention over 20 K cycles at 10 A g −1 . An excellent electrochemical performance is obtained even at a high mass loading of 6 mg cm −2 . Moreover, a flexible quasi-solid-state BiI 3 -Zn battery exhibits satisfactory battery performances. This work provides a new idea for designing high-performance aqueous battery with dual mechanisms.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Xuehua Ruan,Xinfang Zhang,Ziyuan Zhou,Xiaobin Jiang,Yan Dai,Xiaoming Yan,Gaohong He
Continuous ZIF-8 membranes have showed great potential for gas separation. The prospect is subjected to two pivotal issues: shorten the time to construct the ZIF-8 selective layer and tightly bond ZIF-8 layer onto the substrate. In our previous work, Zn(II)-doped polydopamine (Zn-PDA) linkage layer was proposed and effectual to solve these problems. In this research, the mechanism likely to support the improvements is studied intensively. The dominant factor is that Zn(II) ions can be chelating and depositing sufficiently in the linkage layer. The strongly alkaline condition for dopamine polymerization is also beneficial to Zn(II) chelation and deposition, which has been confirmed by DFT simulation, together with characterization tests, e.g., XPS, FTIR, and Zn(OH) 2 precipitation for Zn(II)–O coordination. Phenolic hydroxyl groups are deprotonated in the strongly alkaline environment with high Mulliken charge (−0.515 & −0.524 e) and become strong chelation sites to Zn(II). Subsequently, Zn(II) clusters extensively filled in the PDA linkage layer are acting as the starting sites for ZIF-8 heterogeneous nucleation and growth. The correspondence between Zn(II) clusters probed by EDX and nascent ZIF-8 crystals visualized by FE-SEM can support this phenomenon clearly. On the whole, the abundant starting sites in Zn-PDA enhanced ZIF-8 growth, and ZIF-8 growth from the rooting-in Zn(II) clusters created an indented and hinged boundary for tightly bonding ZIF-8 layer onto the substrate.
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JOURNAL OF FOOD SCIENCE
·
2026
·Vol. 91
·期 10
·e71539
·
IF 4.1
Zhixiang He,Tianru He,Shuyue Meng,Yan Zhou,Yucheng Yan,Zhi Luo,Lu Han,Yuelin Wang,Lei Wang,Hao Liang
Polysaccharide-zinc complexes have been investigated as food-derived antioxidants and mineral carriers, but their performance depends on the degree of metal modification. In this study, Dictyophora indusiata polysaccharide (DP)-zinc preparations (DP-Zn) were produced at different initial Zn 2+ :DP feed ratios, and inductively coupled plasma optical emission spectrometry (ICP-OES) quantified the zinc content of optimized DP-Zn-1 as 1.04% (w/w). High-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD) showed that purified DP contained fucose, galactose, glucose, xylose, and glucuronic acid at a molar ratio of 1.00:6.69:1.85:3.52:2.24. In parallel 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) comparisons, moderate zinc modification (DP-Zn-1) produced the highest radical-scavenging activity, whereas excessive zinc feeding promoted aggregation and reduced activity. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS) mapping showed Zn distributed across the C/O-rich matrix of DP-Zn-1, while the over-modified precipitate and DP + ZnSO 4 physical mixture displayed distinct morphology and elemental-distribution patterns. In H 2 O 2 -treated HFF-1 human foreskin fibroblasts, DP-Zn-1 significantly improved cell viability relative to the corresponding Zn 2+ control and reduced intracellular reactive oxygen species (ROS), although concentration-dependent cytotoxicity was observed at higher doses. During simulated digestion, 47.57% of the zinc became filterable by the end of the gastric stage, leaving 52.43% in the unreleased/non-filterable fraction; filterable zinc reached 49.75% at the end of the intestinal stage. These findings indicate that optimizing zinc modification is necessary to balance radical-scavenging activity, structural accessibility, digestion stability, and safety.
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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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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·596
·
IF 5.4
Wang Wenzhuo,Lu Juan,Jiang Hanyue,Han Pengfei,Ma Guangping,Li Ruixin,Mao Huiyuan,Ma Tengying,Wang Jing,Chen Ruizhan,Tian Li
A dual-mode sensing platform has been developed for ultrasensitive malathion (MAT) detection based on bifunctional rGO@ZnO/Zn-Fe 3 O 4 composites (reduced graphene oxide-supported ZnO nanorods and Zn-doped Fe 3 O 4 microspheres). The rGO@ZnO/Zn-Fe 3 O 4 nanozyme is fabricated via a one-pot hydrothermal strategy and integrates favorable electrochemiluminescence (ECL) emission and intrinsic peroxidase-mimicking activity to realize dual-signal readout. In the K 2 S 2 O 8 ECL system, Au NPs@UiO-66 serves as a coreactant booster to further magnify the ECL intensity of the composite. Meanwhile, the nanozyme catalyzes the H 2 O 2 -mediated oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to produce a colorimetric response. MAT suppresses both ECL and colorimetric responses by occupying Fe 2+ /Fe 3+ catalytic sites and scavenging of reactive radicals. The sensor achieves limits of detection as low as 2.8 × 10 –13 mol/L under ECL mode and 1.32 × 10 –6 mol/L under colorimetric mode. In practical testing of MAT-spiked vegetable samples, the sensor exhibits acceptable recoveries and low relative standard deviations, demonstrating its practicability for field food safety supervision and rapid pesticide residue screening. Graphical abstract
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IONICS
·
2026
·
IF 3.4
Xie Shanshan,Chen Xiaotong,Li Xiaogang,Cheng Lanlan,Wu Rui,Li Jun,Wang Zongnan,Tu Huan,Xue Yutao,Yuan Aihua
Aqueous zinc-ion batteries (AZIBs) have emerged as promising candidates for next generation energy storage systems, benefiting from their high intrinsic safety, cost-effectiveness, and environmental benignity. However, practical applications of AZIBs are severely hindered by critical issues of poor reversibility, dendrite growth, interfacial corrosion, and the hydrogen evolution reaction (HER). Herein, trifluoroacetamide (TFA) is proposed to optimize the Zn²⁺ solvation configuration and stabilize the anode interface to suppress dendrite growth. In contrast to prior strategies relying on a single fluorine source (BF₄⁻or inert anions), this work uses BF₄⁻ and the -CF 3 group of TFA as dual fluorine sources for synergistic organic/inorganic interfacial regulation. ATR-FTIR, Raman, and NMR spectra show that TFA effectively modulates the Zn 2+ solvation structure, and XPS depth profiling confirms the formation of a dense hybrid SEI consisting of inorganic ZnF 2 (from BF₄⁻) and organic fluorides (from -CF 3 ). Comprehensive electrochemical and physical characterizations reveal that the 1 M Zn(BF₄)₂-5% TFA exhibits a minimum contact angle of 45°, which remarkably enhances the wettability Zn/electrolyte interface, enables uniform Zn deposition, and promotes stable three-dimensional diffusion kinetics. The Zn||Zn symmetric cell assembled with the same electrolyte delivers excellent long-cycle stability (≈ 360 h at 1 mA cm⁻² and 0.5 mAh cm⁻²) and high critical current density (12 mA cm⁻²). This work elucidates the pivotal role of TFA in modulating interfacial ion transport and Zn deposition behavior, furnishing a viable strategy for the construction of highly reversible zinc-based batteries.
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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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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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PubMed
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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