CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Shiqi Zhu,Jinzhe Chang,Chaomei Luo,Abdul Salam,Jun Liu,Yongqing Wang,Zhixiang Zhang,Chen Zhao
Soil-borne diseases severely threaten global crop production and urgently require pesticide formulations with targeted effects to improve control efficiency. In this study, a one-pot synthesis method combined with solvent ratio screening was used to successfully prepare Pyr@ZIF-NH₂ loaded with pyraclostrobin (Pyr) achieving a high encapsulation efficiency of 97.42 % and a pesticide loading rate of 20.59 %. The Pyr@ZIF-NH 2 was modified with pectin to obtain Pyr@ZIF@P (119.4 nm), and its successful synthesis was confirmed through characterization. Pyr@ZIF@P enhanced the UV photostability of Pyr and effectively inhibited the growth of Fusarium graminearum , resulting in mycelial malformation. In vitro release studies showed significantly higher Pyr release under acidic, pectinase-rich conditions (mimicking infection sites) with cumulative releases rates of 83.1 % and 74.11 % within 72 h. Foliar application revealed that Pyr@ZIF@P improved foliar retention and promoted downward translocation compared to the commercial suspension, thereby enhancing the control of soil-borne diseases. Moreover, root deaching of Pyr@ZIF@P resulted in more substantial accumulation of active Pyr in the stem, thereby enhancing the control of Fusarium graminearum. Additionally, the zinc-based framework of Pyr@ZIF@P not only facilitates pesticide delivery but also contributes to enhanced root development in wheat seedlings. Taken together, this study presents a novel approach for controlling soil-borne diseases and supporting sustainable agricultural production.
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RARE METALS
·
2025
·
IF 11
Zhu Jing,Wu Longkun,Peng Zhi,Li Shuo,Li Xudong,Zhang Zekun,Zhao Ningning,Li Bin,Meng Wei,Wang Ling,Dai Lei,He Zhangxing
Aqueous zinc ion batteries (AZIBs) have attracted widespread attention due to their unique advantages. However, the growth of dendrites on the anode and the occurrence of side reactions limits the improvement of electrochemical performance of AZIBs. The alloying of zinc anode effectively alleviates above problems, which is beneficial to the long-term cycle performance of AZIBs. In this study, zinc-copper alloy anode (Cu@Zn) was synthesized by melting method. The method is not only simple and easy to operate, but also can make the synthesized anode Cu element uniform distribution and improve the corrosion resistance of the anode. At the same time, the Cu@Zn surface reconstructed has a large proportion of Zn (002) crystal surface exposure, with the zinc affinity of Cu. Both of them can induce the uniform deposition of Zn 2+ ions along the Zn (002) crystal plane, further inhibiting the growth of dendrite. The Cu@Zn//Cu@Zn symmetrical batteries can cycle more than 1000 times at current densities of 0.3 and 1.2 mA cm −2 , and maintain a relatively low hysteresis voltage. And the discharge capacity retention rate of Cu@Zn//MnO 2 maintains 84.64% at 2.0 A g −1 after 1000 cycles. This study provides a new methodological reference for the development of advanced AZIBs anodes. Graphical abstract
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Zixiao Nie,Long Wang,Jialei Li,Zhuo Li,Hao Xu,Yonghong Cheng,Yu Chen,Bing Xiao,Xin Xu
Interfacial engineering offers a promising solution to zinc anode instability, yet most studies focus solely on suppressing side reactions with water, overlooking the critical role of fast zinc ion kinetics. This work investigates the Cr 2 O 3- x artificial interface layer, demonstrating its dual benefits of electrostatic shielding and enhanced Zn 2+ transport kinetics. The Cr 2 O 3- x layer exhibits excellent mechanical stability and hydrophilicity, with its negatively charged surface effectively repelling anions like SO 4 2− and OH − to suppress side reactions. Moreover, the highly active Cr 2 O 3- x layer accelerates Zn 2+ migration, reduces nucleation energy barriers, and promotes uniform zinc deposition by facilitating Zn 2+ detachment from solvated structures. As a result, the Cr 2 O 3- x @Zn anode achieves exceptional cycling stability and remarkable reversibility, with symmetric batteries enduring over 1,800 h at 5 mA cm −2 . When paired with NH 4 V 4 O 10 , it also demonstrates long cycle life and superior rate performance. This work sheds new light on the development of stable, high-performance zinc anodes.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Li Yin,Baixue Xing,Ziyuan Liu,Lihua Lu
Herein, a novel ternary-atomic Fe/Zn/Ir nanozyme (Fe/Zn/Ir TAzyme) with peroxidase (POD)-like and luminescence properties is fabricated through coordinating Ir(III) complex into the as-prepared Fe/ZIF-8. The preparation procedures avoid high-temperature and pyrolysis which endue Fe/Zn/Ir nanocomposite with high stability and can be scaled up. Once Fe/Zn/Ir TAzyme catalyzes the substrate TMB to produce blue oxidized TMB (oxTMB), its luminescence is quenched by the generated oxTMB. Ascribed to its high POD-like activity and interesting luminescence property, a dual-mode sensing platform for the detection of melatonin (MT) is fabricated. In the presence of increasing concentrations of MT, the absorbance of the detection system declines, while the emission of the detection system grows. The detection platform exhibits the limits of detection (LODs) in colorimetric and luminescence detections are 8.9 nM and 8.8 nM, respectively, which can mutually validate the assay results. More importantly, Fe/Zn/Ir TAzyme has been fabricated into test swabs to monitor MT in the way of portable and naked-eye detection. This double-role TAzyme provides new conceptions for researchers to explore novel and highly efficient nanozymes in future.
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Materials
·
2025
·Vol. 18
·期 8
·1786
·
IF 3.2
Xu Wang,Nan Wang,Kunpeng Liu,Meinan Yang,Ruiyong Zhang,Sikandar Khan,Jinhui Pang,Jizhou Duan,Baorong Hou,Wolfgang Sand
Marine biofouling causes significant economic losses, and conventional antifouling methods are often associated with environmental pollution. Hydrogen peroxide (H2O2), as a clean energy source, has gained increasing attention in recent years. Meanwhile, electrocatalytic 2e−oxygen reduction reaction (ORR) for H2O2production has received growing interest. However, the majority of current studies are conducted on acidic or alkaline electrolytes, and research on 2e−ORR in neutral NaCl solutions remains rare. Here, a bimetallic Zn-Cd zeolitic imidazolate framework (ZnCd-ZIF) is rationally designed to achieve chloride-resistant 2e−ORR catalysis under simulated seawater conditions (pH 7.5, 3.5% Cl−). Experimental results demonstrate that the ZnCd-ZIF catalyst exhibits an exceptional H2O2selectivity of 70% at 0.3 VRHE, surpassing monometallic Zn-ZIF (60%) and Cd-ZIF (50%). Notably, H2O2production reaches 120 mmol g−1in a Cl−-containing neutral electrolyte, exhibiting strong resistance to structural corrosion and Cl−poisoning. This work not only pioneers an effective strategy for designing ORR catalysts adapted to marine environments but also advances the practical implementation of seawater-based electrochemical H2O2synthesis.
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JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Yi Lu,Ahmed Mahmoud Idris,Ping Lu,Xinyan Jiang,Jin Wang,Hao Zheng,Xiandan Liang,Sheng Li,Zhengquan Li
Photocatalytic selective oxidation represents a sustainable approach for valuable chemical transformations, yet achieving high yield and selectivity of products remains a significant challenge. In this work, we demonstrate that electronic structure modulation of CsCuCl 3 halide perovskites enables highly selective photocatalytic oxidation of toluene to benzaldehyde (BD). By strategically doping Zn into CsCuCl 3 , we achieved control over the electronic modulation of catalytic sites, leading to a remarkable BD yield of 4.08 mmol g −1 h −1 with 85.4 % selectivity under visible light irradiation. Mechanistic investigations revealed that Zn doping creates an optimal electronic structure, which simultaneously facilitates O 2 activation to form superoxide radicals and promotes selective C–H bond activation of toluene. Density functional theory calculations showed that Zn doping induces charge redistribution at Cu and Cl sites, optimizing surface energetics for both O 2 and toluene adsorption while lowering kinetic barriers for the rate-determining steps. The enhanced charge carrier separation efficiency, confirmed by spectroscopic and electrochemical analyses, further contributes to the superior catalytic performance. This work establishes electronic structure engineering as a powerful strategy for developing high-performance single-component photocatalysts and provides new insights into the selective photocatalytic oxidation reactions.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Huiwang Lian,Rongyi Kuang,Meng Gao,Simin Gu,Siran Tao,Yang Li,Jing Wang,Jianxin Shi
The increasing demand for more efficient and stable scintillators in X-ray imaging applications has spurred extensive research on lead-halide perovskites, particularly Cs-Pb-Br systems. Encapsulating 3D CsPbBr 3 in 0D Cs 4 PbBr 6 matrices represents a promising strategy for enhancing luminescence efficiency. However, persistent lead toxicity impedes clinical and industrial translation, while complex exciton dynamics in these heterostructures complicate scintillation optimization. Here, we develop a liquid-solid interface cation exchange (LSICE) strategy to synthesize Zn-alloyed Cs 4 PbBr 6 /CsPbBr 3 (0D/3D) heterostructures, achieving an enhanced scintillation performance with concurrent lead reduction of 60 %. Unmodified 0D/3D perovskites exhibit abundant paramagnetic Pb (III) defect states, which act as hole-trapping centers, impairing energy transfer from the 0D to 3D phase and causing delayed fluorescence, severe nonradiative recombination, persistent afterglow, and a low scintillation yield of 7423 photons/MeV. In contrast, Zn-alloyed 0D/3D perovskites substantially suppress Pb (III) defects, enabling efficient energy transfer, low afterglow emission, and accelerated excitonic radiative recombination. The optimized scintillator exhibits exceptional performance metrics, achieving a light yield of 13,326 photons/MeV, a spatial resolution of 10.3 lp/mm, and an ultra-low radiation detection limit of 22 nGy air /s. This work addresses the toxicity-performance trade-off in perovskites and establishes B-site alloying as a universal paradigm for designing eco-friendly, high-efficiency radiation detectors.
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LANGMUIR
·
2025
·
IF 3.9
Yanrui Wang,Ting Yu,Qing Xue,Le Chen,Yue Chen,Zhonghua Sun,Junfeng Qian,Chang Guo,Vladimir Yu. Guskov,Zhi-Hui Zhang
In this study, a Zn-based MOF was synthesized via a solvothermal method, and a series of AG/Zn-MOF-X composite aerogels were subsequently engineered through the controlled incorporation of agar. Comprehensive evaluation revealed that the AG/Zn-MOF-0.8 composite achieved remarkable removal efficiencies of 65, 61, and 100% for Cr2O72–, CrO42–, and MnO4–, respectively, outperforming pristine Zn-MOF by 14, 3, and 1%. An analysis of the kinetics and isotherms provided insights into the adsorption mechanisms. Notably, under photocatalytic conditions, the composite exhibited superior degradation with removal rates of 79, 86, and 100% for the respective oxyanions. These findings highlight that tailored MOF modifications can significantly boost both adsorption and photocatalytic performance, offering new possibilities for advanced water purification technologies.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xiaobo Min,Han Lu,Yun Li,Changhao He,Yiwei Deng,Yunyan Wang,Cong Peng,Yong Ke,Yanfa Hu,Zhidong Xi,Liyuan Chai
Copper slag cleaning has always been critical for ensuring an efficient copper recovery in copper smelting system. However, current cleaning methods focus on copper enrichment, regardless of zinc and lead recovery. In order to address the severe resource wastage of lead‑zinc values in copper smelting slag, this study proposed an innovative copper slag cleaning technique for efficient and in-situ synergistic sulfidation recovery of Cu, Pb and Zn, and investigated the sulfidation mechanisms. A systematic characterization of copper slag was conducted and revealed that Zn 2 SiO 4 and PbSiO 3 are two of the main occurrence phases lost in slag, respectively, and they are the most difficult phases to recovery. Furthermore, thermodynamic, thermogravimetric analysis and experimental results regarding Zn 2 SiO 4 and PbSiO 3 in-situ synergistic sulfidation by CaSO 4 gypsum residue revealed that PbSiO 3 sulfidation mechanism progressed via CaSO 4 → CaS conversion, followed by diffusion of molten PbSiO 3 to CaS particle surfaces where Pb S bonding produced PbS shells. At the same time, Zn 2 SiO 4 involves calcium-promoted decomposition into ZnO and SiO 2 , and subsequent ZnO-CaS interfacial reaction producing ZnS and CaO. In addition, pilot experiments were conducted to detect the feasibility and stability of the proposed technique. Optimal conditions (12.02% sulfurizing agent dosage, 1 °C/min slow cooling) were determined and achieved comprehensive sulfidation rates of 88.55% Cu, 66.26% Pb, and 59.24% Zn, with effective enrichment as matte. Lead‑zinc sulfides attained flotation-required particle sizes (>40 μm) while residual phases showed minimal metal contents. This study addresses the challenge of lead‑zinc resource wastage in copper slag, introducing a novel approach and methodology for its resource utilization.
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CERAMICS INTERNATIONAL
·
2025
·Vol. 52
·期 1
·114-121
·
IF 5.6
Shixian Xie,Pengbo Fu,Lichen Wang,Huayang Gong,Fang Wang,Fenghua Chen,Zhigang Sun,Jiaguo Fan,Yan Zhang,Jian Zhang,Baogen Shen
M-type strontium ferrite (SrFe 12 O 19 ) is widely used in various fields due to its low cost and excellent stability. However, its relatively low saturation magnetization ( M s ) significantly restricts its broader applications. Enhancing M s through non-rare-earth doping via the solid-state reaction method is of significant practical importance. The primary challenge lies in simultaneously maintaining lattice stability and regulating Fe 3+ spin alignment through doping. In this study, a series of non-rare-earth Nb–Zn co-doped SrFe 12- x (Nb a Zn b ) x O 19 ( a : b = 1:1, a : b = 4:5, x = 0.1–0.5) were synthesized using the solid-state reaction method. XRD phase analysis indicated that a single M-type strontium ferrite phase was obtained at the stoichiometric doped ( a:b = 1:1). In contrast, for the non-stoichiometric doped ( a:b = 4:5), a trace amount of the secondary phase SrNb 0.5 Fe 0.5 O 3 was detected in Nb–Zn doped samples with x ≥ 0.2. M s of both stoichiometric and non-stoichiometric doped samples increased within the range of 0≤ x ≤ 0.3 but gradually decreased when x exceeded 0.3. Notably, for the composition with a : b = 4:5, M s reached a maximum value of 79.33 emu/g at x = 0.3, accompanied by a synchronous enhancement of 18.5 % in coercivity ( H c ). Raman spectroscopy analysis revealed the enhancement mechanism of M s : the synergistic occupation of Nb 5+ and Zn 2+ ions. Specifically, Zn 2+ preferentially occupies the 4f 1 tetrahedral sites, while Nb 5+ incorporates into the 4f 2 sites. This co-substitution effectively replaces the spin-down Fe 3+ ions, leading to a significant increase in M s . The presence of a trace amount of the secondary phase SrNb 0.5 Fe 0.5 O 3 in the non-stoichiometrically doped samples, effectively inhibited grain growth, thereby contributing to the enhancement of H c . This study successfully synthesized non-rare-earth-doped strontium ferrite materials via a solid-state reaction method, achieving a significant enhancement in M s . Furthermore, the underlying mechanism for the improvement in M s through Nb–Zn co-doping was elucidated for the first time. Our findings are of significance for the development of high-performance, cost-effective ferrite materials.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 33
·2132
·
IF 2.8
Xiao Hongbo,Feng Chaochao,Chen Yangdie,Lin Zhenqin
Traditional ZnO-based microwave absorbers and monometallic ZIF systems suffer from narrow effective absorption bandwidths due to impedance mismatch and insufficient magnetic-dielectric synergy. To address these limitations, this study proposes a self-sacrificial template strategy for constructing Zn/Co bimetallic zeolitic imidazolate frameworks (ZIFs) using spherical ZnO as a dynamic coordination host. Unlike conventional hard-template routes, the self-sacrificial templating strategy allows atomic-level control over morphology and composition via in-situ dissolution–recrystallization, leading to hierarchical architectures with rich heterointerfaces. By tuning the Co 2+ content (0.1–0.3 g) and pyrolysis temperature (700–900 °C), the resulting carbon-based composites exhibit precisely regulated microstructures and balanced electromagnetic properties. The structural evolution and composition were systematically investigated using X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM/HRTEM), X-ray Photoelectron Spectroscopy (XPS), and Vibrating Sample Magnetometry (VSM). The optimized derivative pyrolyzed at 800 ℃ (PSE3-2–800) exhibited exceptional microwave absorption performance, achieving a minimum reflection loss (RL min ) of − 51.24 dB at 4.2 mm thickness and an ultra-wide effective absorption bandwidth (EAB) of 7.36 GHz (10.64–18.00 GHz) at 2.3 mm. Structural and compositional analyses revealed that the hollow architecture formed via ZnO carbothermal reduction, coupled with graphitized carbon matrices embedded with Co 3 ZnC nanoparticles and atomic Co-Nx sites, synergistically enhanced dielectric polarization, magnetic resonance, and multi-path scattering. This work provides a paradigm for designing lightweight broadband absorbers through defect engineering and bimetallic coordination, overcoming the limitations of single-component systems in balancing impedance matching and multi-loss mechanisms.
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Small
·
2025
·
IF 12.1
Haoyi Wang,Le Xu,Chunying Si,Yankai Zhang,Yunbiao Qi,Quanxing Zhang,Wei Jiang
Mixed polyester wastes with different chemical structures remain a key obstacle to achieving circularity in plastic utilization. Here, a programmable one-pot photothermal strategy is reported using a catalyst derived from a bimetallic MOF (Zn/Co-ZIF-C) through pyrolysis of a Zn/Co-integrated precursor. This system enables the efficient and sequential depolymerization of polycarbonate (PC), polylactic acid (PLA), and polyethylene terephthalate (PET) in mixed streams by simply tuning the irradiation intensity. Selective glycolysis of PC, PLA, and PET is triggered at ≈420, 520, and 650 mW cm −2 , respectively, enabling stepwise monomer recovery in a single reactor. Density functional theory calculations reveal a dual-site cooperative mechanism, in which ZnO and Co-N x sites cooperatively activate ester bonds and ethylene glycol, offering a mechanistic basis for the observed substrate-specific reactivity. The Zn/Co-ZIF-C catalyst exhibits broadband light absorption, strong catalytic activity, and excellent recyclability, maintaining over 95% PET conversion across five cycles. Moreover, it achieves monomer yields above 80% from nine real-world post-consumer plastics, while simultaneously removing dyes and performing magnetic separation. This work presents a robust and scalable catalytic platform for light-controlled, selective upcycling of complex polyester mixtures, offering new opportunities for sustainable plastic circularity.
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危险品化学品经营许可证（带存储）