JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2025
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IF 6.2
Yibo Liu,Yuee Tian,Hong Peng,Fulong Zhang,Xiaobo Huang,Genqiang Chen,Lin Zhou,Zhiping Che
Paeonol is the main active ingredient in the Chinese medicinal herb peony root bark. To discover biorational natural product-based fungicides, 25 paeonol derivatives (5a–y) containing a pyrazole ring were designed and synthesized by ingeniously introducing a pyrazole five-membered heterocyclic ring, and their structures were well characterized by 1H NMR, 13C NMR, high-resolution mass spectrometer (HRMS), and m.p. The stereochemical configurations of six target compounds, 5c, 5f, 5g, 5o, 5s, and 5v, were unambiguously subjected to single-crystal X-ray diffraction. Furthermore, we evaluated the bioactivities of these target compounds as anti-oomycete and antifungal agents against two serious agricultural diseases, Phytophthora capsici and Fusarium graminearum. Among all tested compounds, (1) nine compounds 5b–d, 5f, 5g, 5r, 5s, 5u, 5w displayed promising anti-oomycete against P. capsici, with EC50 values ranging from 22.1 to 34.5 mg/L, and the protective effect of the target compounds against P. capsici in vivo further confirmed the above results. (2) Six compounds 5g, 5k, 5m, 5t, 5w, 5x displayed promising antifungal against F. graminearum, with EC50 values ranging from 38.2 to 86.0 mg/L. Moreover, some interesting results of structure–activity relationships were also observed. The results of this study pave the way for further design, synthesis, and development of paeonol derivatives as potential botanical anti-oomycete and antifungal agents in crop protection.
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JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Qianxi Yang,Bingqian Kang,Wenjing Han,Haoran Wang,Sinan Cheng,Junjie Liu,Hongwei Fan,Hong Meng
Covalent organic frameworks (COFs) membranes have shown huge potential in low-cost nanofiltration treatment of saline industrial wastewater with high permselectivity. However, their practical application is often limited by complicated preparation processes, particularly the extensive use of toxic solvents such as 1,4-dioxane and dichloromethane. Herein, we present a facile and environmentally-friendly strategy to synthesize high-quality COF membranes exclusively in aqueous system instead of any organic reagents. The procedure involves depositing water-synthesized TpPa-1 onto a porous substrate via vacuum filtration, followed by cross-linking with epichlorohydrin (ECH). This method significantly mitigates health and safety risks by eliminating the use of hazardous organic solvents throughout the entire process. The green metrics assessment further confirmed the environmental advantages of aqueous synthesis strategy. The resultant TpPa-1-ECH membrane exhibited an excellent nanofiltration performance for dye desalination. The separation factor of Congo red/NaCl can reach 139, while the permeation flux can reach 450 L m -2 h -1 MPa -1 . The overall performance not only far surpasses most polymeric membranes but is also comparable to other reported COF membranes prepared with toxic organic solvents.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Guoren Li,Jiehong Lei,Man He,Jinze Yu,Tingting Song,Hui Zhu
This study achieved the directed functionalization of 3-aminopyrazole onto the interface of chitosan aerogel via the Schiff base reaction, successfully preparing a porous, lightweight, lamellar pyrazole-functionalized chitosan aerogel material (Pyrazole@CSA-5). This material demonstrates specific and efficient capture of iodine vapor and methyl iodide under strong acidic, high-humidity, and low-concentration dynamic conditions. At 75 °C, Pyrazole@CSA-5 achieved capture capacities of 5255 mg/g for iodine vapor and 1060 mg/g for methyl iodide. Under dynamic low-concentration conditions, the material maximum capture capacities for iodine vapor (8.75 ppm) and methyl iodide (18.6 ppm) were 1658 mg/g and 410 mg/g, respectively, significantly outperforming similar adsorbents. Mechanism characterization revealed that Pyrazole@CSA-5's adsorption of iodine vapor and methyl iodide is attributed to electron transfer with imine groups and nitrogen methylation reactions with imine groups, respectively. DFT calculations revealed adsorption energies of −0.70 eV and −0.57 eV for iodine, −0.70 eV and −0.61 eV for methyl iodide at the two distinct imine sites, confirming the material's outstanding adsorption performance toward both iodine vapor and methyl iodide. After treatment with the strong acid at pH = 1, Pyrazole@CSA-5 exhibited the iodine vapor capture capacity of 4125 mg/g. Under 80 % humidity conditions, its capture capacities for iodine vapor and methyl iodide were 3735 mg/g and 1007 mg/g, respectively, maintaining good capture performance. Thus, Pyrazole@CSA-5 demonstrates effective specific capture of iodine vapor and methyl iodide under complex conditions, exhibiting strong potential for practical application.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xiaojing Wu,Xiangyu Liu,Jingxin Hou,Jinhu Liu,Zheng Lian,Xueqin Sun,Lingyu Du,Litao Kang
Increasing the active material loading on electrodes provides an effective approach for improving the energy density of batteries. However, this approach is always hindered by intractable challenges such as poor structural stability, slow reaction kinetics, and low active material utilization. In this paper, a high-performance double-fiber interlocking binder system is developed to construct high-performance iodine cathodes, by leveraging a polyquaternium-10 (P10, a cationic cellulose) waterborne binder and a bacterial cellulose (BC) reinforcing fiber. The synergistic effect of mechanical interlocking and hydrogen bonding between BC and P10 forms a robust 3D network, enabling the construction of high-mass-loading freestanding I 2 @AC cathodes. Furthermore, the highly hydrophilic BC-P10 network ensures rapid and uniform electrolyte infiltration, facilitating fast ion transport and full material utilization. At the same time, the network can firmly anchor the I 2 @AC active material and the polyiodide intermediates, suppress the detrimental polyiodide shuttling and self-discharge, while retaining the mechanical strength and structural integrity. At routine iodine loading mass (2–3 mg cm −2 ), the BC-P10-bonded cathode delivers much higher capacity (182.6 vs.150.6 mA h g −1 , 0.2 A g −1 ), better rate capability (137.6 vs.75.4 mA h g −1 , 5.0 A g −1 ) and higher anti-self-discharge performance (capacity retention after 200 h: 76.0 vs. 68.4 %), compared with the conventional PVDF-bonded cathode. At an ultrahigh iodine loading mass of 32 mg cm −2 , the BC-P10-bonded cathode delivers still an exceptional capacity of 150.3 mA h g −1 at 0.2 A g −1 (corresponding to an areal capacity of 4.8 mAh cm −2 ). The application viability of this binder system has also been demonstrated by constructing high-mass-loading rollable pouch batteries. This work opens a promising avenue for the development of high-performance iodine cathodes.
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Frontiers in Environmental Science
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2025
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IF 3.7
Renren Wang,Hao Xiao,Yi Tan,Luo Chen,Yuhang Zhou,Runfeng Xie,Chuan Tan,Yifei Yang,Cheng Liu,Hengyang Wang,Junxiao Yang,Tao Duan,Lin Zhu
The efficient capture of radioactive iodine is critical for nuclear safety due to its high mobility and toxicity. Bismuth sulfide (Bi2S3) aerogel, synthesized via a one-step hydrothermal method, demonstrates exceptional iodine adsorption performance. Characterization by scanning electron microscopy (SEM) and BET confirmed the material’s porous structure, which facilitated iodine uptake. Batch experiments revealed a high adsorption capacity of 1,204 mg/g, with kinetics and isotherms well described by the pseudo-second-order model and Freundlich isotherm, respectively, indicating that the adsorption process is dominated by chemisorption. The adsorption mechanism involves iodine phase transfer and subsequent formation of stable BiI3 phases, ensuring long-term immobilization. The Bi2S3 aerogel demonstrates superior chemical and thermal stability, high capture efficiency, and cost-effectiveness, further highlighting its practical potential for nuclear waste management. This work advances the design of bismuth-based adsorbents by combining high capacity, stability, and scalable synthesis, thereby offering a sustainable solution for radioactive iodine capture.
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JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Chenhui Bai,Yuxiu Yao,Saeed Ahmed Khan,Jing Li,Fang Yi,Jie Zhang,Hu Shi,Hulin Zhang
Thermogalvanic cells provide an efficient pathway for converting low-grade heat into electricity. Their performance is governed by the Seebeck coefficient, which dictates voltage output and thermoelectric efficiency. Previous efforts to enhance the Seebeck coefficient have focused on entropy contributions from solvent-induced solvation effects, while the impact of configurational entropy in quasi-solid-state networks has received limited attention. Here, we demonstrate that configurational entropy serves as an additional factor modulating the thermoelectric behavior of thermogalvanic hydrogels. Using the PVA hydrogel incorporating the Fe 2+ /Fe 3+ redox couple as a model system, we elucidate how constrained polymer networks alter redox thermodynamics. When a Fe 2+ /Fe 3+ concentration of 0.1 mol L −1 , the Seebeck coefficient in the hydrogel reaches 1.32 mV K −1 , significantly higher than that in aqueous solution (0.75 mV K −1 ). Complementary molecular dynamics simulations further demonstrate that hydrogel chains disturb the first solvation shell, broaden the radial distribution of coordinating water molecules, and increase dipole orientation disorder, thereby amplifying the configurational disparity between oxidized and reduced species. This leads to an enhanced role of configurational entropy in the ionic migration entropy. Our findings therefore highlight rational design ideas for optimizing high-performance quasi-solid-state thermogalvanic cells by quantifying the actual contribution of configurational entropy in the nano-network structure.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Qi He,Xin Lai,Yumeng Wu,Zhipeng Wu,Shengrong Huang,Changhui Tan,Xiaogeng Lin,Yasan He
A two-stage strategy of “Incubation and Driven growth” was developed for synthesizing crystalline imine-linked covalent organic frameworks (COFs) at ambient condition. At the first stage, COF crystallites were incubated by slow nucleation and growth under the modulation of inhibitor. At the second stage, the water-soluble modulator and solvent were gradually removed by salt-water extraction, breaking the polycondensation reaction equilibrium to drive the growth and assembly of COF crystallites. With this strategy, six representative [3+3] and [3+2] COFs were successfully synthesized, indicating its universality. The crystallinity and porosity of the synthesized COFs are similar or better than those reported in literature. Notably, the COFs exhibited larger-sized morphologies with stronger lateral growth and vertical layer stacking compared with those synthesized by other 1-stage method. The effect of time-dependent, temperature and modulator on the crystallinity and morphology revealed the process of growth and assembly could be well controlled. The distinctive inner structures endowed the COFs exceptional iodine adsorption capability, better than those prepared by traditional solvothermal method and 1-stage method. This work also provides a concept and mechanistic basis for tuning the inner structure and morphology of COFs for specific application.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Menghan Sun,Lishan Wei,Jinsong Peng,Gongyuan Zhao,Dengfeng Yu,Chunxia Chen
Aqueous Zn–I 2 batteries have garnered significant attention due to their high abundance and safety. However, the sluggish iodine redox kinetics and undesirable shuttle effect severely hindered their wider application. Herein, dual doping of B and N provides an effective strategy to modulates chemical properties and electron distributions of carbon hosts, resulting in high performance of Zn–I 2 batteries. The local electron redistribution enhances electron density at the Fermi level of the carbon host, thereby improving intrinsic conductivity. Additionally, combining experiments and DFT calculations reveal that N B center sites are benefited in suppressing shuttle effects, strengthened interactions with iodide species, and facilitated catalytic conversion kinetics. Notably, Zn–I 2 batteries fabricated with B and N co-doped porous carbon (BNAC) achieve an outstanding capacity (231.7 mAh g −1 at 0.1 A g −1 ) and excellent cycling stability (capacitance retention of 98 % after 4,500 cycles). This study not only provides valuable insights into the design of advanced carbon materials but also clarifies the active sites in B/N co-doped carbon materials, offering guidance for the rational design of carbon-based electrode materials for Zn–I 2 batteries.
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