CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Wei Sun,Zi-Xi Wang,Yuxin Guo,Chengcheng Li,Ge Gao,Fu-Gen Wu
Iodine (I 2 ) as a broad-spectrum antiseptic has been widely used for treating bacterial infections. However, I 2 has low water-solubility and sublimes under ambient conditions, which limits its practical antibacterial applications. The highly specific and sensitive reaction between I 2 and starch discovered 200 years ago has been extensively applied in analytical chemistry, but the antibacterial activity of the I 2 − starch complex is rarely investigated. Herein, we develop a novel type of iodine-based antiseptics, iodine−soluble starch (I 2 -SS) cryogel, which can dissolve in water instantly and almost completely kill bacteria in 10 min at 2 μg/mL of I 2 . Although KI 3 and the commercially available povidone‑iodine (I 2 -PVP) solutions show similar antibacterial efficacy, the high affinity of I 2 to SS largely enhances the shelf stability of the I 2 -SS solution with ~75 % I 2 left after one-week storage at room temperature. In sharp contrast, ~8 % and ~ 3 % I 2 are detected in KI 3 and I 2 -PVP solutions, respectively. Mechanistic study reveals that the potent antibacterial effect of I 2 -SS originates from its attack on multiple bacterial targets. The outstanding antibacterial activity, capability of accelerating wound healing, and good biocompatibility of I 2 -SS are verified through further in vivo experiments. This work may promote the development of next-generation iodine-based antiseptics for clinical use.
研究领域:
药学
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材料科学
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化学
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微生物学
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生物医学工程
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
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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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
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IF 5.4
Xuan Li,Yuchao Guo,Peifen Wang,Xiaowei An,Xuli Ma,Xin Chen,Yongguo Li,Xiaogang Hao,Abuliti Abudula,Guoqing Guan
Ethanol evaporation and KOH were firstly applied to co-activated biochar for Iodine Capture. • The obtained EKBC-200 had a high-surface-area and carboxyl-rich architecture. • I₂ capture of 2300 mg g⁻¹ with high stability was achieved at 200 ℃. • DFT analysis confirmed the key role of -COOH in stabilizing iodine molecules. In this study, a synergistic ethanol impregnation-KOH activation strategy was proposed to fabricate hierarchically porous biochar from pine cones, applied for the efficient capture of gaseous radioactive iodine. Systematic optimization of ethanol evaporation temperature as well as the KOH ratio revealed that EKBC-200 exhibited the highest surface area of 1285 m 2 g −1 with a micropore volume of 0.51 cm 3 g −1 , achieving an excellent I 2 uptake of 2300 mg g −1 . The desorption rate remained as low as 13%, and the capacity exceeded 1500 mg g −1 after five regeneration cycles, outperforming most reported sorbents. FTIR spectral changes (e.g., peak shifts or broadening) may provide supportive evidence for interactions such as hydrogen bonding. Characterization and density functional theory (DFT) calculations revealed that ethanol pretreatment could effectively open blocked pores and introduce oxygen-containing functional groups (e.g., -OH and -COOH). Subsequently, KOH activation generated abundant micro/mesopores and stabilized these oxygenated sites, resulting in a high-surface-area, carboxyl-rich structure favorable for I 2 adsorption. The grey relational analysis revealed that higher total and micropore volumes enhanced I 2 uptake, while the oxygenated surface groups strengthened I 2 retention. This work could offer an efficient and safe sorbent for radioactive I 2 capture from nuclear off-gas and provide a promising pathway for the high-value utilization of biomass. Download: Download high-res image (121KB) Download: Download full-size image
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Lin Zhou,Geyang Zhang,Jiazhuang Guo,Shujie Liu,Yunzhen Chang,Ying Zhang,Yanping Li,Sheng Zhu,Gaoyi Han
Aqueous zinc–iodine batteries (AZIBs) show great promise for sustainable energy storage due to inherent safety, cost-effectiveness, and environmental compatibility. However, their practical implementation is critically hindered by polyiodide shuttling, particularly under low current densities, leading to rapid capacity decay. Herein, poly(diallyldimethylammonium chloride) (PDDA) is employed as a functional binder to construct carbon nanotubes (CNTs)/PDDA composite cathodes. Unlike conventional carboxymethyl cellulose (CMC) based CNTs/CMC cathodes with compromised Coulombic efficiency (49.6% at 0.1 A g −1 ), the CNTs/PDDA architecture effectively anchors polyiodides to suppress the shuttle effect and self-discharge through robust electrostatic interaction between quaternary ammonium groups and polyiodide ions. The optimized AZIBs exhibit high Coulombic efficiency (>98.2% at 0.1 A g −1 ), large specific capacity (231.1 mAh g −1 at 0.1 A g −1 ), high durable cycling stability (45 000 cycles at 3.0 A g −1 ), and sustained open-circuit voltage (1.326 V after 12-h rest). Mechanism studies reveal the dual functionalities of the PDDA binder in mitigating polyiodide shuttling and zinc anode corrosion. The PDDA system exhibits reduced Gibbs free energy (ΔG) and narrowed redox potential gaps, which effectively immobilize polyiodide species and promote the complete conversion of I − → I 3 − → I 2 . This work highlights the great potential of PDDA as a functional binder for high-performance AZIBs.
研究领域:
电化学储能
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材料科学
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能源化学
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纳米材料
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电池技术
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Cheng Zhu,Pan Hui,Li Fan,Duan Chun,Liu Hang,Zhong Hanyun,Sheng Chuanchao,Hou Guangjin,He Ping,Zhou Haoshen
Rechargeable Li-I 2 battery has attracted considerable attentions due to its high theoretical capacity, low cost and environment-friendliness. Dissolution of polyiodides are required to facilitate the electrochemical redox reaction of the I 2 cathode, which would lead to a harmful shuttle effect. All-solid-state Li-I 2 battery totally avoids the polyiodides shuttle in a liquid system. However, the insoluble discharge product at the conventional solid interface results in a sluggish electrochemical reaction and poor rechargeability. In this work, by adopting a well-designed hybrid electrolyte composed of a dispersion layer and a blocking layer, we successfully promote a new polyiodides chemistry and localize the polyiodides dissolution within a limited space near the cathode. Owing to this confined dissolution strategy, a rechargeable and highly reversible all-solid-state Li-I 2 battery is demonstrated and shows a long-term life of over 9000 cycles at 1C with a capacity retention of 84.1%.
研究领域:
材料科学
·
能源存储与转换
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高影响因子
INORGANIC CHEMISTRY
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2021
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IF 5.165
Amir Said,Chang Gao,Caiyun Liu,Huihui Niu,Dexin Wang,Yanshu Liu,Lin Du,Chen-Ho Tung,Yifeng Wang
A three-dimensional (3D) mesoporous material with an atomically precise structure, Ti16Pb5O16(C6H5CO2)2(OCH3)40 (Ti16Pb5), comprised of a novel high-nuclearity Pb-doped titanium oxide cluster (TOC), was synthesized. Ti16Pb5 exhibited a surface area of 45 m2 g–1 and a pore diameter of 3.5 nm. It exhibited an uptake capacity of I2 of ≤2.2 g g–1 in vapor, and the performance was maintained after seven uptake–release cycles. Ti16Pb5 also showed a high adsorption ratio and capacity (93% and 3.1 g g–1) in hexane. The characterization data, including Fourier transform infrared, Raman, and powder X-ray diffraction, suggested the lattice structure of Ti16Pb5 was rigid and I2 was accommodated in the pores of Ti16Pb5. To the best of our knowledge, this is the first example of using a TOC in I2 adsorption. In addition, Ti16Pb5 showed excellent activity and recyclability in visible-light degradation of dye pollutants and photocurrent generation. Our structural analysis suggested the alkoxide ligands within the channels of Ti16Pb5 build up a confined polar environment and thereby facilitate I2 accommodation, and meanwhile, the improved performances and stabilities of Ti16Pb5 are correlated with its cluster-based, 3D hierarchical structure.
研究领域:
材料科学
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环境科学
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PubMed
高影响因子
ACS Applied Polymer Materials
·
2024
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IF 4.4
Saqlain Raza,Amin Abid,Isham Areej,Shahid Nazeer,Ahmad Kaleem Qureshi,Bien Tan
In this research, two types of metal-free organic–inorganic phosphazene based hybrid porous polymers (HPMs) enriched with phosphorus (P) and nitrogen (N) for gas sorption characteristics were reported. Cyclic phosphazenes were synthesized by condensation of biphenyl methanol with the hexachlorocyclophosphazenes (HCCPs) followed by cross-linking for the fabrication of porous and high surface area moiety designated as HCP-1. Whereas HCP-2 was synthesized with the replacement of polydichlorophosphazene (PDCP) chlorines with biphenyl methanol and later cross-linked in the same manner. Brunauer–Emmett–Teller surface areas of (SABETs) of HCP-1 and HCP-2 were 482 and 323 m2 g–1, respectively, whereas pore size distribution was under 1.10 nm. The observation of a higher surface area of HCP-1 is strongly indicative of cyclic N and P long chain backbone [-N═P-]. HCP-1 with a high surface area represented high carbon dioxide (CO2) adsorption (1.656 mmol g–1 with quantity adsorbed 37.13 cm3 g–1 at 273 K/1 bar and 1.35 mmol g–1 with quantity adsorbed 30.37 cm3 g–1 at 298 K/1 bar). HCP-2 with a low surface area showed moderate adsorption capacity (1.6 mmol g–1 with a quantity adsorbed 35.82 cm3 g–1 at 273 K/1 bar and 1.26 mmol g–1 with a quantity adsorbed 28.36 cm3 g–1 at 298 K/1 bar). The values of iodine uptake of HCP-1 and HCP-2 are 148 and 227 wt %, respectively, at 353 K. These results indicate a facile and convenient method to synthesize heteroatom-rich metal-free organic–inorganic phosphazene based hybrid porous polymers for CO2 and I2 sorption applications.
研究领域:
材料科学
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环境科学
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高影响因子
IONICS
·
2026
·
IF 3.4
Huang Dandan,Ouyang Quan,Guo Pingchun,Jiang Hedong
Zn-ion batteries (ZIBs) have attracted considerable attention as promising energy storage systems owing to their natural abundance, low standard electrode potential (-0.76 V), and high theoretical capacity (820 mAh g − 1 ). Nevertheless, their practical application is severely hindered by Zn dendrite growth, hydrogen evolution, and electrode passivation. To address these challenges, we constructed a Zn-based vermiculite coating on Zn anodes (Ver@Zn), which reduces the direct exposure of Zn to the electrolyte and suppresses side reactions and passivation layer formation. Owing to its unique Zn 2+ interlayer channels and electronic insulating properties, the vermiculite coating facilitates uniform Zn 2+ migration and nucleation, thereby enabling homogeneous Zn deposition. As a result, the modified Zn anode exhibited enhanced corrosion resistance and higher Coulombic efficiency (CE). The vermiculite particle with optimized size (45–61 μm) yielded the best cycling stability, with a symmetric cell lifetime of up to 1700 h, far exceeding that of bare Zn. Furthermore, the Ver@Zn anode delivered superior performance in Zn/I 2 full cells, maintaining high specific capacity, rate capability, and long-term cycling stability (98% capacity retention after 3000 cycles) with CE of 99.8%. This work demonstrates an effective surface engineering strategy for advancing high-performance aqueous Zn iodine battery.
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高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Dingxuan Zhao,Shihui Ma,Jiajia Wang,Fei Liang,Dazhi Lu,Kui Wu,Ning Ye,Zhanggui Hu
Birefringent crystals can modulate the polarization of light and have important applications in optoelectronic and photonic fields in the infrared optical communication band. However, existing birefringent crystals exhibit a significant decrease in birefringence (Δn ≤ 0.26) in the infrared waveband due to the dispersion effect. Herein, we designed a new organic–inorganic hybrid halide (C7H10N)3Bi2I9·I2, which possesses a layered structure with π-conjugation cations. Though the structure has a stereochemical inert lone pair Bi3+, the compound exhibits a large birefringence of 0.39@589 nm (sodium D-line), which is consistent with the theoretical calculations of 0.386@589 nm. Remarkably, first-principles calculations reveal that it still maintains a large birefringence of 0.42@1064 nm and 0.32@1550 nm. This can be attributed to the highly distorted nature of the π-conjugated 1-ethylpyridinium cation and the significant distortion of the BiI6 octahedra. This work highlights the persistently neglected potential of organic–inorganic hybrid halide materials as birefringent crystals.
研究领域:
材料科学
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光学工程
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凝聚态物理
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无机化学
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功能材料
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PubMed
高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Dandan Li,Ying-Jie Zhu,Long Cheng,Sida Xie,Han-Ping Yu,Wei Zhang,Zhenming Xu,Ming-Guo Ma,Heng Li
Achieving both high iodine loading cathode and high Zn anode depth of discharge (DOD) is pivotal to unlocking the full potential of energy-dense Zn-I 2 batteries. However, this combination exacerbates the detrimental shuttle effect of polyiodide intermediates, significantly impairing the battery's reversibility and stability. Herein, this study reports an advanced high-loading iodine cathode (denoted as MX-AB@I) enabled by a multifunctional Ti 3 C 2 T x MXene modulator, which presents high stability and energy density in Zn-I 2 batteries. Through comprehensive experimental and theoretical analyses, the intrinsic regulating mechanisms are elucidated by which the MXene modulator effectively suppresses polyiodide shuttling, enhances iodine conversion kinetics, and dramatically improves Zn anode reversibility. With the aid of the MXene modulator, the MX-AB@I composite cathode achieves a high iodine mass loading of 23 mg cm −2 and realizes a practically high areal capacity of 4.0 mAh cm −2 . When paired with a thin Zn anode (10 µm), this configuration realizes a high Zn DOD of 78.7% and a high energy density of 171.3 Wh kg −1 , surpassing the majority of Zn-I 2 battery systems reported in the literature. This study presents an effective approach to designing high-loading iodine cathodes for Zn-I 2 batteries by leveraging MXene modulators to regulate critical electrochemical reaction processes.
研究领域:
材料科学
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电化学
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能源存储
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高影响因子
EMBO Molecular Medicine
·
2025
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IF 8.3
FengShengyong,MaEnhao,NaXiaona,WangZongmei,TaiWanbo,BaoXinhui,WangMao,ChangHan,WuBaolei,LiuMiaoxi,LiJuzhen,ShiHuicheng,YangCeli,XiMenglu,YangHaibing,LiYuhan,ZhuYibin,WangPenghua,ZhaoLing,ZhaoAi,ChengGong
Vaccination offers the most effective protection against contagious infectious diseases primarily by inducing humoral immunity. Vaccination efficacy is influenced by various factors. We report that dietary administration of arachidonic acid (ARA) significantly boosts rabies vaccine-induced production of neutralizing antibodies and protection against lethal rabies virus (RABV) infection in mice. In human volunteers, oral supplementation of ARA accelerates the expression of neutralizing antibodies to the levels sufficient for protection against RABV as early as one week after primary immunization. Mechanistically, ARA is enriched in lymph nodes and metabolized into immune modulators there. One of the ARA metabolites, prostaglandin I2 (PGI2), via the cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) axis, upregulates the expression of costimulatory molecule CD86, and activates activation-induced cytidine deaminase (AID) in B cells. These results suggest that ARA can be a potent dietary adjuvant to foster germinal center (GC) B cell response and humoral immunity.
研究领域:
免疫学
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营养科学
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病毒学
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疫苗研究
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PubMed
高影响因子
Advanced Sustainable Systems
·
2026
·Vol. 10
·期 2
·e01641
·
IF 5.6
Dandan Li,Xue-Qing Tian,Ying-Jie Zhu,Ming-Guo Ma,Heng Li
Aqueous zinc-iodine (Zn-I 2 ) batteries have garnered significant attention owing to their high theoretical capacity and intrinsic safety. However, their development is still hampered by sluggish iodine redox kinetics and severe capacity decay caused by the polyiodide shuttle effect. To systematically address these challenges, we report a multifunctional self-supporting cathode (Ni-CNT/NFC@I) integrating nickel-functionalized carbon nanotubes (Ni-CNTs) with nanofibrillated cellulose (NFC). The Ni-CNTs serve a dual role: catalytically accelerating iodine redox kinetics while chemically anchoring polyiodides. Concurrently, the NFC backbone provides mechanical flexibility and forms a 3D porous network for physical confinement. This synergistic catalytic anchoring and physical confinement strategy effectively suppresses the shuttle effect. Consequently, the cathode delivers a high capacity of 210.1 mAh g −1 (99.6% iodine utilization) and demonstrates exceptional cycling stability, retaining 94.0% of its capacity after 5000 cycles at 3.0 A g −1 . The multifunctional self-supporting electrode design concept proposed in this study offers a new strategy for the development of long-lifespan, high-stability aqueous energy storage devices.
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高影响因子
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