ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Zhiyao Liu,Hongxia Bu,Yingying Wang,Zaifa Yang,Jingjing Feng,Chuanlin Li,Zhonghang Cai,Yuhan Gao,Guangmeng Qu,Hua Wei
Static zinc–iodine batteries (SZIBs) offer high capacity, safety, and low cost for large-scale energy storage, but suffer from zinc dendrite growth and polyiodide shuttle effects. Here, a sulfonated cobalt phthalocyanine (S-CoPc) is introduced as a dual-functional additive to simultaneously stabilize the zinc anode and iodine cathode. Hydrophilic sulfonic groups enable uniform dispersion in aqueous electrolyte, while zincophilic sites and Co–N4 centers regulate Zn2+ deposition and iodine redox reactions. At the anode, S-CoPc adsorption homogenizes Zn2+ flux (finite-element verified) and lowers desolvation energy barriers, achieving dendrite-suppressed plating and long-term stability over 2800 h in Zn||Zn cells. At the cathode, strong I3– chemisorption and accelerated I–/I2 conversion kinetics mitigate the shuttle effect and enhance redox reversibility. The optimized SZIB delivers 219.8 mAh g–1 at 1 A g–1, retains 105.6 mAh g–1 at 30 A g–1, and maintains 96.7% capacity after 10,000 cycles at 10 A g–1. A high-loading pouch cell (1.7 mAh cm–2) achieves 86.5% retention after 550 cycles, demonstrating the potential of S-CoPc-enabled electrolyte engineering for durable, high-rate aqueous batteries.
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Journal of Environmental Sciences
·
2025
·
IF 6.3
Lingyun Xu,Shanshan Lu,Liping Jiang,Xiaohe Tian,Xijie Lin,Jianhua Qiu
Metal-organic framework membranes have been proven to possess outstanding iodine adsorption capacity, but many MOFs are highly sensitive to water, limiting their use in aqueous solution. Herein, polypyrrole (PPy) molecules are deposited onto Zn-based metal-organic framework (Zn-MOF) membranes to enhance water stability and the adsorption performance for iodine ions in aqueous solution. The hydrophobic nature of PPy molecules and the nitrogen atoms in the pyrrole ring, which have lone electron pairs, allow for the doping of iodine to form a charge-transfer complex. This effectively slows down the hydrolysis of the Zn-MOF and improves the iodine scavenging ability. For the iodine aqueous solution (I 2 /KI), the saturated capacity of iodine adsorption of the Zn-MOF@PPy membrane reaches up to 397 mg/g, compared to that of the Zn-MOF membrane (183 mg/g). Under dynamic adsorption processes, the Zn-MOF@PPy membrane achieved a removal efficiency of 93.89 % within 6 min. Molecular simulations reveal that Zn-MOF exhibits a water molecule binding energy of -4.6 kcal/mol, while Zn-MOF@PPy shows a weaker binding energy of -1.3 kcal/mol. Based on the Monte Carlo simulations, the atomic distance between I 3 - and Zn-MOF@PPy is 2.8 Å, representing a reduction compared to that of Zn-MOF (4.3 Å). The Zn-MOF and Zn-MOF@PPy have binding energies of -3.4 kcal/mol and -4.6 kcal/mol with I 3 - , respectively. Those results confirm that the hydrophobic PPy layer effectively repels water molecules, creating a low-dielectric environment that substantially mitigates direct water attack on the Zn-MOF framework. The presence of strong interaction sites in the PPy modified layer, which tightly anchors the iodine species on the framework surface. This attempt provides new insights into improving the MOF adsorption membranes’ capture performance and water stability for iodine in aqueous solution.
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CHEMOSPHERE
·
2025
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IF 8.1
Siyu Liu,Xinyue Zhao,Yaobin Ding,Lina Wang,Yiyang Li,Jun He,Chengjun Wang
Water microdroplets are ubiquitous in atmospheric environment, where photo-irradiation and O 3 are available, while photo-decomposition of trace organic pollutants in microdroplets and the impact of atmospheric environmental factors on the photo-chemistry remain unclear. In this study, photochemical generation of reactive oxygen species and degradation of typical endocrine disturbing compounds (EDCs) in microdroplets were investigated under various atmospheric conditions (O 3 , inorganic anions and fulvic acid). The experimental results demonstrate that EDCs can be degraded in microdroplets, and the degradation efficiency is further improved under the stimulated solar irradiation. The degradation efficiency of estrone (E1), estradiol (E2), ethinyl estradiol (EE2), testosterone (T) exposing to sunlight irradiation is 55.45 %, 64.11 %, 89.72 %, and 24.72 %, respectively. The degradation of EDCs is attributed to the generation of hydroxyl and superoxide radicals at or near the microdroplets interface. In addition, with O 3 , the degradation efficiency of EDCs in microdroplets increased to 100 %, 100 %, 100 %, and 83.87 %, respectively. Common inorganic ions (Cl − , NO 3 − , SO 4 2− , and HCO 3 − ) and fulvic acid exhibit positive effects for degradation of EDCs at varying extents. Overall, these findings shed light on the generation of reactive oxygen species and degradation patthways of trace EDCs in microdroplets and improve the understanding of the effect associated with relevant environmental factors in atmospheric microdroplets.
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FOOD CHEMISTRY
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2025
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IF 9.8
Tingting Gao,You Tian,Ji Ma,Da-Wen Sun
Wheat starch and fatty acid can combine as wheat starch-fatty acid (WS-FA) complexes playing crucial roles in health but are sensitive to ambient humidity. Therefore, microwave-processed WS-FA complexes incorporating fatty acids in different carbon chain lengths (C12 to C18) and unsaturation degrees (C18:0 to C18:3) were prepared, of which structural information, digestive characteristics and humidity-induced storage stability were investigated. Results showed that both chain lengths and unsaturation degrees of fatty acids affected the structural and digestive properties of WS-FA complexes. According to the moisture absorption behaviours, WS-FA complexes exhibited lower critical absorption relative humidities (CARH: 44 %–68 % RH) and equilibrium moisture values ( M e : 17.7 %–20.5 %) than pure wheat starch (CARH: 72 % RH; M e : 27.7 %), indicating ambient humidity >44 % RH significantly impacts their storage stability. Beyond structural and digestive analysis, this study first investigates humidity-induced instability of WS-FA complexes for the first time, highlighting the need for customized standards for starch-lipid complex preservation.
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Foods
·
2025
·Vol. 14
·期 7
·1262
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IF 5.1
Yanan Zhao,Lulu Li,Yanfei Li,Yan Zhao
Effects of low temperature (LT, 20 °C) combined with nitrogen-modified atmosphere (MA, 95% N2) storage (LT + MA) on quality, microstructure, and metabolome characteristics of high moisture content (15.5%) during 180 days of storage were investigated to explore a potential preservation technique for high moisture rice. The results showed that after 180 days of storage, the fatty acid value, malondialdehyde content, and amylose content of rice under LT + MA storage were 53.33%, 72.93%, and 91.85% of those under conventional storage (CS, conventional atmosphere, 30 °C, RH 65%), respectively. The color, pasting properties, and scanning electron microscopy (SEM) of the LT + MA treatment were found to be markedly superior to those of the CS treatment. In addition, the differential metabolites sucrose, trehalose-6P, trehalose, 3,7-Di-O-methylquercetin (DMQ), rutin, and vitexin 2″-O-rhamnoside (VOR) were screened to assess for sensitivity to changes in storage conditions. The study demonstrated that the LT + MA effectively suppressed the escalation of FAV, MDA content, and amylose content. In addition, it was observed to inhibit the deterioration of color and pasting properties while concurrently maintaining the polygonal shape of rice starch granules. Furthermore, the differential metabolites of non-targeted metabolomics indicated that the LT + MA group exhibited superior efficacy in retarding rice aging.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yichen Li,Jie Zhang,Xinxin Wang,Ruixue Meng,Yinxiao Zhang,Lianwei Yin,Xinxin Pi,Qiuju Du,Long Chen,Yanhui Li
In recent years, the persistent threat of nuclear contamination on human health has highlighted the urgent need for efficient strategies to remove radioactive iodine from nuclear wastes. This work proposes an efficient method to enhance the iodine adsorption capacity of covalent organic framework (COF) adsorbents by amine functionalization using toluene-2,4-diisocyanate (TDI) and N-aminoethylpiperazine (AEP). The resulting TpPa-TDI-AEP demonstrated exceptional iodine adsorption capacities of 6.81 g/g in the gas phase and 1570.50 mg/g in the liquid phase, approxmately 2.4 and 5 times than those of the unmodified COF material, and surpassing the perforamnce of most existing adsorbents. The notable adsorption performances benefit from the abundant nucleophilic nitrogen atoms, which facilitate the formation of charge transporter complexes and enable reversible capture of iodine through strong electrostatic interactions. Density function theory (DFT) calculations confirmed that the piperazine rings in the post-grafted portion promote the generation of higher oxidation state iodides (e.g., I 5 - ) through strong coordination ability. As a result, the modified COF exhibits increased binding energy, a broader adsorption range, and significantly improved capacity for various iodine species. In addition, the reversible nature of polyiodide formation endows the composite excellent cyclic stability and recyclability. Combined with its favorable chemical and thermal stability, low cost, and mild synthesis conditions, make TpPa-TDI-AEP a promising candidate for efficient disposal of radioiodine from nuclear waste.
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MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Nana Li,Hao Shen,Mengdi Hao,Wanqiu Huang,Ying Han,Fan Yang,Shaoning Yu
α-Amylase not only has a wide range of applications in the food industry (especially baking, alcoholic beverage manufacturing and sugar production), but also serves as a core enzyme in the human digestive system, serving as an important parameter in the diagnosis of pancreatic diseases. Nevertheless, current methods still face challenges of numerous reagents, complex operation process, high cost and unsatisfactory sensitivity, restricting their utilization in on-field detection. Thus, the development of facile, low-cost, and sensitive strategies to monitor α-amylase activity is desperately required. Herein, we report the fabrication of a hybrid nanozyme through the in situ assembly of a hydrogen-bonded organic framework (HOF) onto an amino-functionalized metal-organic framework (MOF). The enhanced substrate channels and introduced affinity groups significantly improved the biocatalytic performance of the hybrid nanozyme NMOF@DHOF, leading to a strengthened colorimetric signal. Leveraging its high activity and stability, an ultrasensitive colorimetric platform was developed for the rapid detection of α-amylase activity. The assay platform utilized the interaction between α-amylase and starch-cross-linked NMOF@DHOF (NMOF@DHOF@Starch), where α-amylase hydrolyzed starch and led to the aggregation of nanoclusters, resulting in a weakening of the peroxidase activity. The proposed colorimetric strategy produced a linear response over a relevant range of α-amylase levels (1–30 U·L −1 ) with a low detection limit (0.68 U·L −1 ) and significant specificity. The platform's sensitivity and applicability were validated for α-amylase detection in complex matrices, including fermentation samples and human serum. This work establishes a novel biosensing platform design framework with significant potential to advance rapid analysis of α-amylase in both fermentation process monitoring and clinical disease diagnostics. Through facile replacement of particular crosslinking agents, the proposed platform is able to be utilized to quantify the activity of other types of enzymes, offering a beneficial guideline for the establishment of other enzyme analysis systems.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Fangfang Dong,Shengrui Cui,Chengliang Lin,Xin Wan,Ning Wang,Xiang Huang,Wei Liu,Yongcheng Jin
The insufficient structural stability of high-voltage spinel cobalt-free LiNi 0.5 Mn 1.5 O 4 (LNMO) throughout the cycling process hinders its widespread application. To address these issues, we incorporate elemental iodine into LNMO during the precursor preparation process using an ethanol-assisted hydrothermal method and successfully modify the bulk and interface coating structure of LNMO-3% I 2 . The incorporation of iodine not only induces the formation of a cavity and fast lithium-ion transfer pathway within the particles but also facilitates the development of a thin LiI coating layer on the surface of cathode materials. Compared with bared LNMO, LNMO-3% I 2 exhibits a capacity retention of 90.31% following 500 cycles at 1C and a capacity retention of 88.74% even following 450cycles at a high-rate of 50C. Furthermore, the cells with LNMO-3% I 2 demonstrate an excellent electrochemical performance under both high temperatures of 40 ℃ and low temperatures of −15 ℃. This study offers valuable insights into the simultaneous optimization of internal and external structures in cathode materials, thereby enhancing the long-term cycling performance of high-voltage lithium-ion batteries.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Cheng Zhu,Liu Hang,Zhang Menghang,Pan Hui,Sheng Chuanchao,Li Wei,Wagemaker Marnix,He Ping,Zhou Haoshen
Rechargeable Li||I 2 batteries based on liquid organic electrolytes suffer from pronounced polyiodides shuttling and safety concerns, which can be potentially tackled by the use of solid-state electrolytes. However, current all-solid-state Li||I 2 batteries only demonstrate limited capacity based on a two-electron I − /I 2 polyiodides chemistry at elevated temperatures, preventing them from rivaling state-of-the-art lithium-ion batteries. Herein, we report a fast, stable and high-capacity four-electron solid-conversion I − /I 2 /I + chemistry in all-solid-state Li||I 2 batteries at room temperature. Through the strategic use of a highly conductive, chlorine-rich solid electrolyte Li 4.2 InCl 7.2 as the catholyte, we effectively activate the I 2 /I + redox couple. This activation is achieved through a robust I-Cl interhalogen interaction between I 2 and the catholyte, facilitated by an interface-mediated heterogeneous oxidation mechanism. Moreover, apart from serving as Li-ion conduction pathway, the Li 4.2 InCl 7.2 catholyte is demonstrated to show a reversible redox behavior and contribute to the electrode capacity without compromising its conductivity. Based on the I − /I 2 /I + four-electron chemistry, the as-designed all-solid-state Li||I 2 batteries deliver a high specific capacity of 449 mAh g -1 at 44 mA g -1 based on I 2 mass and an impressive cycling stability over 600 cycles with a capacity retention of 91% at 440 mA g -1 and at 25 °C.
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MOLECULES
·
2025
·Vol. 30
·期 3
·502
·
IF 4.6
Tian Lan,Xiaofan Ding,Qi Chen,Songtao Xiao,Taihong Yan,Tianchi Li,Weifang Zheng
Iodine is one of the key elements that must be removed from the off-gas systems of nuclear fuel reprocessing. This study systematically investigates the iodine vapor adsorption performance of the metal–organic framework (MOF) material HKUST-1(1-(2-methyl-4-(2-oxopyrrolidin-1-yl)phenyl)-3-morpholino-5,6-dihydropyridin-2(1H)-one), with particle sizes of 100 nm and 20 μm. HKUST-1 samples with varying particle sizes were synthesized via a hydrothermal method. The experimental results show that the 20 μm HKUST-1 exhibits superior crystallinity, a more intact pore structure, and a higher iodine adsorption capacity, reaching 700 mg/g, which is significantly greater than the 300 mg/g capacity of the 100 nm HKUST-1. Kinetic analysis reveals that the adsorption process follows the pseudo-second-order model, with physical adsorption as the predominant mechanism, where iodine molecules are accommodated within the pores. FTIR and XRD further confirm the structural stability of the HKUST-1 framework after iodine adsorption. However, desorption experiments show that iodine molecules are easily volatilized into the air, with a 20% weight loss observed within 10 h and a color change from black to green. The results provide experimental evidence for optimizing the application of HKUST-1 materials in iodine capture and suggest that material modification could enhance the long-term stability of iodine fixation.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yinan Wang,Haibin Rao,Wendong Wang,Longmei Shang,Yun Zheng,Kang Sun,Fangsong Guo,Guowu Zhan
Minimizing the exciton binding energy in a single polymer material represents a promising strategy for enhancing photocatalytic activity. Herein we designed a melon-based carbon nitride aerogel with an intrachain torsional disorder driven by pyrolysis supramolecular strategy. Such torsional disorder melon-based π-conjugated systems can be constructed to exhibit a minimized exciton binding energy, extended visible light absorption, ultrahigh BET specific surface area, and enhanced charge carriers transfer and separation efficiency, thereby hydrogen production reached a new high of 1.83 mmol h −1 , with an AQY of 13.3 % at λ = 450 nm, exceeding most of the currently reported polymeric carbon nitride. This study highlights the facile regulation of exciton binding energy by crosslinked molecular architectonics, which shows great potential for torsional disorder π-conjugated systems in photoelectrical catalysis.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lijun Tang,Jian Gao,Tong Shen,Yubing Sun,Xiangyu Wang,Yongchao Zhang,Tiansheng Mu,Xiaodong Zhu
High energy density, intrinsic safety, and eco-friendliness of aqueous zinc‑iodine (Zn I 2 ) batteries are hindered by the shuttle effect and sluggish iodine redox kinetics. These limitations result in the formation of highly soluble triiodide ( I 3 − ) intermediates, which adversely affect energy density and cycle life. To address these issues, we designed N, O co-doped porous carbon with interconnected microchannels (N/O-PC) to create abundant catalytic sites and a locally strong adsorption microenvironment for the iodine reduction reaction (IRR). The unique structure of N/O-PC facilitates electrolyte penetration and enhances iodine fixation and loading, effectively inhibiting the formation and shuttling of I 3 − . Leveraging this favorable microenvironment, the battery exhibits exceptional cycling stability with a high capacitance retention rate after 65,000 cycles at 10 A g −1 . In situ characterization and theoretical calculations confirm that N/O dopants serve as active centers promoting the chemical immobilization and catalytic conversion of polyiodides. This work integrates physical adsorption and catalytic conversion to construct a host material, offering a novel strategy for developing a powerful Zn I 2 batteries.
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