CRYSTENGCOMM
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2025
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IF 2.6
Jiahui Wang,Shufang Ma,Shuai Zhang,Xiaodong Hao,Bocang Qiu,Bingshe Xu
The discovery and construction of novel two-dimensional (2D) materials are driving forces for technological advancement. Among them, violet phosphorus (VP)—a structurally ordered and thermodynamically stable allotrope of phosphorus—exhibits a well-defined layered framework, superior crystallinity, and enhanced environmental stability compared with black phosphorus. However, the absence of an efficient and controllable growth strategy has severely constrained both its fundamental understanding and functional implementation. Herein, tellurium (Te) and iodine (I) were introduced as mineralizers in a chemical vapor transport (CVT) system to drive the transformation of amorphous red phosphorus into highly crystalline VP. This method enables rapid and uniform crystal growth, yielding plate-like VP with strong (004) orientation, sharp lattice fringes, and a remarkably high yield (~95%) within 15 h. The analysis of the structure and optical properties reveals significant light absorption activity, and it has a band gap of approximately 1.8 eV, indicating excellent semiconductor and light response characteristics. Furthermore, compared to black phosphorus the as-grown VP crystals exhibit robust air stability, maintaining their structural integrity and optical characteristics over extended periods. This work provides an efficient and scalable route to produce high-quality VP crystals, thereby advancing their applications in next-generation optoelectronics, photodetection, and energy conversion systems.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Chang Sun,Dehui Yang,Ye Li,Yaxi Shu,Huiyong Wang,Guoqing Zhuang,Baozhan Zheng,Juan Du,Yong Guo
Given the threat of radioactive iodine (RI) to the environment and human health, developing highly efficient and easily recoverable iodine absorbents in water is still a challenge in practical application. Herein, a novel porous magnetic carbon material was successfully prepared by annealing in-situ polymerized dopamine on Fe2O3 template, hollow porous carbon (H-PC) and bell-shaped magnetic porous carbon (BM-PC) can be controllably obtained by completely or partially removing Fe3O4 generated during annealing. Interestingly, H-PC exhibits outstanding iodine adsorption performance in water with a higher capacity of 945.97 mg/g due to its special hollow porous structure, which can not only increase the active sites in absorbent, but also effectively accelerate the mass transfer through its inner and outer surface. Moreover, the synthesized BM-PC with good magnetism can be easily recycled from solution, which has been proven with excellent stability and reusability for iodine adsorption and recovery in water, indicating its promising practical potential. Therefore, this research not only provides a novel perspective for effective treatment of RI pollution but also opens a new way for the sustainable recycling and practical utilization of absorbents.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Xuemei Li,Jingbo Zhang,Yang Shen,Yue Wang
Radioactive iodine isotopes with various types and valence states pose a significant hazard to human health and environmental safety. Consequently, the development of an effective adsorbent that can simultaneously remove different types of iodine is of significant importance. In this study, a series of iHCPs (iHCP[Im a P b ] c ) with tunable nanostructures were synthesized using a highly distorted monomer (V 3 N 6 -IL) and pyrrole as structural units via the Friedel-Crafts reaction. The tunable nanostructures were achieved by controlling the reaction components, leading to the appearance of structures including nanobars, nanostrips, nanofibers, nanosheets, and nanodarts. It was noteworthy that the characteristics of the building units endowed iHCP[Im a P b ] c with three distinct functional adsorption sites, namely heteroatoms, aromatic rings and ionic groups, which enabled iHCP[Im a P b ] c for the purpose of adsorbing iodine (I 2 )/iodide (I – ). The maximum adsorption capacity of iHCP[Im 0.2 P 1 ] 20 for I – was 418.41 mg g −1 , surpassing most reported polymeric adsorbents. Furthermore, iHCP[Im 0.2 P 1 ] 20 also had excellent I 2 adsorption capacity in cyclohexane up to 510.70 mg g −1 . Concurrently, iHCP[Im 0.2 P 1 ] 20 exhibited favorable recyclability in the I 2 and I – adsorption cycle experiment. In conclusion, the present study demonstrates a promising adsorbent material for the removal of I 2 /I – .
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MOLECULES
·
2025
·Vol. 30
·期 3
·502
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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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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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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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Advanced Science
·
2025
·
IF 14.1
Sibo Wang,Chen Li,Wanlong Wu,Guoli Zhang,Razium Ali Soomro,Wenchao Fu,Xiaoqi Sun,Bin Xu
Aqueous Zn–S batteries are promising candidates for large-scale energy storage applications due to their high specific capacity and energy density. However, their performance is extremely plagued by the sluggish redox kinetics. Here, an interface chemistry regulator is proposed for both electrodes to facilitate reaction kinetics and promote stability. The tetramethylurea (TTMU) is selected as the electrolyte additive. It first preferentially adsorbs on the sulfur cathode surface and coordinates to Zn 2+ , thereby altering their reaction pathway. This reduces the energy barrier and promotes uniform ZnS nucleation, which accelerates reaction kinetics. At the same time, the additive induces an effective solid-electrolyte interphase on the anode and enhances the reversibility and stability of Zn plating/stripping. With the help of 10% TTMU additive, the Zn–S battery delivers a high capacity of 1620 mAh g −1 with a low overpotential of 0.37 V at 0.1 A g −1 , which is superior to 1138 mAh g −1 /0.65 V in the benchmark Zn(OAc) 2 /ZnI 2 electrolyte. With the increase of current density to 5 A g −1 , the additive also significantly enhances the capacity from 48 to 913 mAh g −1 . Promoted cycling stabilities are further achieved for both Zn electrode and Zn–S cells in the TTMU containing electrolyte.
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SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES
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2025
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IF 2.7
Gao Yuan,Li Jiachang,Xu Xiaopeng,Yu Bin,Xiang Shishuai,He Long,Zhang Yuhang,Xie Jia,Du Jiang,Hu Bing
Background Lugol’s iodine staining (LIS) solution is used to assist in esophageal chromoendoscopy. Mucosal irritation often results in uncomfortable symptoms and the risk of allergy. In the present study, we developed an extremely low-irritation, easy-to-use mucosal staining solution using polyvinyl pyrrolidone-iodine (PVP-I). This study aimed to evaluate its mucosal staining capacity and biocompatibility. Methods The mucosal staining capacity was evaluated using postoperative esophageal endoscopic submucosal dissection (ESD) specimens. After elution with vitamin C solution, the specimens were sprayed with LIS as a self-control. The effects on the “lesion area” outlined between the innovative staining and LIS were examined by the intraclass correlation coefficient (ICC) and rank-sum test. To evaluate the biocompatibility, esophageal perfusion was performed with the mice, and the esophagus and stomach were anatomized at different time points for pathological analysis. Results A total of 53 esophageal ESD specimens were stained at the endoscopy center of West China Hospital. Compared with the same concentration of LIS, the PVP-I solutions showed similar staining effects in terms of the lesion area outlined [ICC = 0.998 (> 0.75), P = 0.733 (> 0.05)]. In live mouse experiments with esophageal perfusion, PVP-I was safer and less irritable to the esophageal gastric mucosa than LIS was, with a lower mucosal damage index (UI) and fewer inflammatory cells in pathological analysis at various time points. Conclusions The innovative PVP-I staining demonstrated effectiveness, safety, and feasibility as a mucosal staining solution for screening esophageal lesions. Further clinical studies will be carried out in the future. Graphical abstract
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CHEMICAL ENGINEERING JOURNAL
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2025
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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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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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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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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
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 MEMBRANE SCIENCE
·
2025
·
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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危险品化学品经营许可证（带存储）