JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
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.
研究领域:
材料科学
·
电化学
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DOI
PubMed
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Lijun Tang,Jian Gao,Jia Xu,Changxiang Shao,Tiansheng Mu,Xiaodong Zhu
The practical applications of aqueous Zn-I 2 batteries are severely hindered by the uncontrolled shutting of polyiodide ions and rampant side reactions. Herein, we integrate coordination-driven monodisperse liquid metal (LM) nanodroplets into a sulfonate-rich polyanionic hydrogel matrix (p(AMPS-AA)) to fabricate a bifunctional gel electrolyte (LM-AP) capable of simultaneously suppressing Zn dendrite growth and polyiodide shuttle effect. Mechanistically, the dynamic hydrogen bond network of the hydrogel and the fluidity of LM nanodroplets synergistically endow the electrolyte with self-adaptive deformation capability, maintaining intimate electrode-electrolyte contact to suppress hydrogen evolution reaction (HER) and dendrite growth. Meanwhile, the electrostatic repulsion of sulfonate ( − SO 3 − ) anionic chains and chemical adsorption of LM nanodroplets jointly block polyiodide shuttling. Consequently, this polyanionic hydrogel electrolyte demonstrates exceptional stability in a symmetrical Zn//Zn cell, maintaining high cycling stability over 3500 h at 0.5 mA cm −2 and 0.5 mAh cm −2 . And the Zn-I 2 batteries with LM-AP electrolyte achieve a high Coulombic efficiency (CE) (∼100%) and exceptionally long cycling stability (85,000 cycles) at a high current density of 20 A g −1 . The high-loading pouch battery maintains a capacity retention rate of 99% after 350 cycles and demonstrated excellent flexibility and safety. This design provides a brand-new idea for solving the problem of multi-interface coupling failure of Zn-I 2 batteries.
研究领域:
储能
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电化学
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材料科学
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电池技术
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DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xuedong Jia,Hongyuan Guo,Xiu Zhao,Ruining Liu,Xiayu Song,Zhuo Shi,Yingchun Zhu,Suozhu Wu
A novel electrochemical sensor based on gold nanoparticles-poly(phenylboronic acid)/glass carbon electrode (AuNPs-poly(PBA)/GCE) was successfully constructed for detecting nitrite (NO 2 − ) ions using the iodine/iodide (I 2 / I − ) mixed system as a probe. The AuNPs-poly(PBA) composites were firstly prepared on a bare GCE by one-step electrodeposition. By combining the specific enrichment ability of poly(PBA) to NO 2 − and I 2 / I − with the catalytic activity of AuNPs to the reaction between them, the response range of this sensor towards NO 2 − was 1.0 × 10 −11 M to 1.0 × 10 −4 M with a limit of detection (LOD) of 1.7 × 10 −12 M (S/N = 3). The sensor had the advantages of easy preparation, fast response, wide linear range, low LOD, and good selectivity, and could be applied to detect NO 2 − in beef and tap water samples with satisfactory results, which provided a highly sensitive and rapid analysis approach in the fields of food safety and environmental monitoring.
研究领域:
分析化学
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环境科学
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食品科学
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生物传感
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电化学
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Peng-Fang Zhang,Jia-Hui Li,Shao-Jian Zhang,Da-Cheng Li,Su-Yuan Zeng,Shu-Ling Xu,Qing-Xia Yao,Ling-Yang Liu,Lei Ding,Heng-Xiang Li,Yi-Yang Hu,Jun-Tao Li,Yao Zhou
Zn–iodine (I 2 ) battery, as a promising energy storage device, especially under high I 2 loading, is harassed by the shuttle effect of the soluble polyiodide intermediates. Herein, the bifunctional role of 2D carbon nanosponge with rich P-dopant (4.2 at%) and large specific surface area (1966 m 2 g −1 ) in anchoring I 2 /I x − ( x = 1, 3 or 5) and catalyzing their mutual conversion is reported. Both experiment and computational results reveal the transfer of electrons from the P-doped site to iodine species, showing strong interfacial interaction. When being used as a host, it possesses high specific capture capacity for I 2 (3.34 g iodine g −1 or 1.6 mg iodine m −2 ) and I x − (6.12 g triiodide g −1 or 3.1 mg triiodide m −2 ), which thus effectively suppresses the shuttle effect, supported by in situ UV–vis and Raman spectra. In addition to the strong interfacial interaction that favors iodine conversion, the P-doped sites can also catalyze the conversion of I 5 − to I 2 , which is the rate-determining step. Consequently, Zn–I 2 batteries under a high I 2 content (70 wt%) deliver high specific capacity (220.3 mAh g −1 ), superior Coulombic efficiency (>99%), and low self-discharge rate; moreover, they can also operate steadily at 2 A g −1 with ignorable capacity decay for 10 000 cycles.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xu Jia,Jiyang Tian,Qian Zhang,Jiajun Wan,Hongjiang Song,Ying Xie,Jie Liu
For I 2 cathodes, the severe polyiodide shuttling and sluggish reaction kinetics result in unsatisfactory cycling lifespan and rate performance. Herein, a bifunctional electrophilic host is designed by engineering the electron cloud density to effectively anchor electron-rich polyiodides. Three configurations are initially screened through density functional theory simulations, which reveal that Si─O bonds can firmly anchor I 3 − via Si electrophilic centers. Owing to the considerably lower electronegativity of Si (1.90) than that of O (3.44), electrons surrounding Si atoms are strongly drawn toward O atoms, creating Si electrophilic centers. Specifically, I 3 − adsorbed onto Si─O bonds exhibits a favorable orbital configuration with a low energy gap, thereby kinetically enhancing polyiodide conversion. As a proof of concept, SiO 2 nanocrystals embedded in conductive microporous bio-carbon are derived from poplar flowers. The resulting I 2 cathodes demonstrate excellent cycling stability over 110 000 cycles at 4 A g −1 and a high rate performance with a capacity of 123.8 mAh g −1 at 100 C. Furthermore, the I 2 cathode with a loading as high as 36.5 mg cm −2 can also perform well in terms of 127.6 mAh g −1 after 100 cycles. This study presents a new route for the rational design of high-efficiency and sustainable hosts for I 2 cathodes.
研究领域:
储能
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材料科学
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电化学
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纳米技术
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计算化学
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DOI
高影响因子
DALTON TRANSACTIONS
·
2018
·Vol. 47
·期 14
·5065-5071
·
IF 4.099
Junyi Yang,Xiao Feng,Guangnong Lu,Yulin Li,Chaochao Mao,Zhongliang Wen,Wenbing Yuan
The use of salts as grinding media to assist the mechanosynthesis, and the following one-pot mechanochemical post-synthesis, of hierarchically porous MOFs was carried out efficiently by ball milling. NaCl or KCl were used as a solid solvent to initially pre-grind with 1,3,5-benzenetricarboxylic acid (H3BTC) and copper acetate monhydrate, respectively, for 1 minute, then both mixtures were combined together for a further 20 minutes of grinding, and the resultant mixture was finally washed with ethanol and water to obtain the hierarchically micro-, meso- and macroporous HKUST-1 with a high yield. Moreover, the post-synthesis of these as-obtained hierarchically porous HKUST-1 was easily performed via grinding triethylenediamine (TED) with the above unwashed crude-products for 20 minutes. By adjusting the amount of NaCl and TED added, we simply fabricated the pore- and function-adjustable hierarchically porous HKUST-1. Furthermore, these as-obtained HKUST-1 products showed high performance in the capture of volatile iodine.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2020
·Vol. 413
·期 2
·649-659
·
IF 3.637
Halawa Mohamed Ibrahim,Wu GuoXing,Li Bing Shi
In this work, we fabricated gold nanoparticles (AuNPs) capped with both polyvinyl pyrrolidone (PVP) and iodine (I 2 ) to act as efficient chemiluminescent coreactants for luminol. AuNPs synthesis was based on the direct chemical reduction of Au 3+ with NaBH 4 in the presence of PVP-I 2 complex. The successful synthesis of PVP-I 2 @AuNPs was confirmed with scanning electron microscopy (SEM) and UV-vis spectrophotometry. Chemiluminescence (CL) intensity of luminol was greatly enhanced, upon its chemical reaction with chemisorbed I 2 on AuNPs surfaces owing to the excellent catalytic activity of AuNPs. The PVP-I 2 @AuNPs/luminol CL sensing system was successfully applied for determination of Hg 2+ ions and the results displayed linearity in a wide range from 0.5 to 2000 nM and an ultrasensitive response to 1.0 nM Hg 2+ . The detection limit of Hg 2+ ions was 0.1 nM, which was 100 times lower than the limit value (10 nM) defined by the U.S. Environmental Protection Agency in drinkable water. This ultrasensitive luminogenic system for Hg 2+ detection also exhibited excellent selectivity among 13 types of metals, suggesting that the luminol/PVP-I 2 @AuNPs system is a promising sensor for real-time detection of Hg 2+ .
Graphical abstract
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
ANALYST
·
2016
·Vol. 141
·期 8
·2508-2514
·
IF 4.033
Meina Wang,Baozhan Zheng,Feng Yang,Juan Du,Yong Guo,Jianyuan Dai,Lei Yan,Dan Xiao
“Amphiphilic” carbon dots (A-CDs) with a strong green fluorescence emission were synthesized by a simple and green method at room temperature. The characterization demonstrated that the synthesized A-CDs have both hydrophilic and hydrophobic properties and could be dispersed well in aqueous and organic solutions. As a fluorescent probe, the fluorescence of A-CDs could be obviously quenched in the presence of iodine (I2) and the quenching rate is proportional to the concentration of I2. Therefore, the A-CDs could be used as fluorophores for the detection of I2 with higher selectivity and sensitivity, and the linear working range for the I2 sensor is 80 nM–10 μM with a detection limit of 3.5 nM (S/N = 3). More interesting is that IO3− and I− could be transformed to I2 with different sample treatment processes, therefore, the I2 sensor based on A-CDs could also be used for the analysis of iodine species (I2, I− and IO3−) in samples. The possible mechanism has also been discussed in this work, and the high selectivity response to I2 can be attributed to the amphiphilic properties of A-CDs, which bring I2 closer to A-CDs and quench their fluorescence. The proposed I2 sensor has been successfully used for the analysis of iodine species in highly saline water, and the satisfactory results of detection and analysis of iodine species in samples demonstrate that the developed I2 sensor based on A-CDs has potential application in the fields of environment and clinical medicine.
研究领域:
分析化学
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环境科学
·
医学
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DOI
PubMed
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
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2017
·
IF 2.124
Quan Guo,Yantao Xu,Haitao Guo,Xusheng Xiao,Changgui Lin,Xiaoxia Cui,Pengfei Wang,Fei Gao,Min Lu,Bo Peng
A serial (100 − x)Ge 25 Sb 10 S 65 -xI (x = 0, 5, 10, 15, 20, 25 and 30 wt%) chalcohalide glasses and ones doped with 0.1 wt% Dy 3 + rare-earth ions were synthesized and their structural, thermal and optical properties were systematically studied. It indicates that addition of I 2 into Ge 25 Sb 10 S 65 glass significantly decreases the connectivity of glass network and average bond energy, and modifies the associated properties. The glass transition temperature and refractive index decrease monotonically, and the density increases almost linearly with the increasing of iodine content in glass. The thermal stability is improved, which has a maximum of ΔT max = 174 °C. While the optical bandgap has a peak value at x = 10 wt%. The absorption spectra and mid-infrared fluorescence spectra of Dy 3 + rare-earth ions doped glasses were investigated together with the Judd-Ofelt analysis. GeS 2 nano-crystals were found in the sample with x ≥ 15 wt%, which is supposed to induce enhancements of mid-infrared fluorescence at 2.95 and 4.32 μm.
研究领域:
材料科学
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光学
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固体物理学
·
化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Jing Ma,Yaoyao Linghu,Kai Yuan,Rui Zhou,Hui Gao,Peihua Zhao,Shaohui Guo,Huiqi Wang,Yongping Qu,Chao Shen,Keyu Xie
Aqueous Zn–I 2 battery (AZIBs) has attracted wide attention with its low cost, high capacity, low reduction potential and high safety. Iodine-based materials have the advantages of environmental protection, excellent cycle stability and low cost. However, there are some challenges, such as poor conductivity, slow kinetics and solubility of iodine species. Therefore, an innovative approach is proposed that exhibits excellent electrical conductivity and effectively anchors iodine species through physical trap with microporous structure and strong chemical adsorption with the synergistic effects of triazine and secondary amine-N. The dynamic transfer mechanism between them enhances catalytic conversion of iodine. The melamine-formaldehyde polymer and MXenes (Ti 3 C 2 T x ) composite (NC@TC) is prepared as host material of iodine by the electrostatic self-assembly. DFT calculation indicates thermodynamically favorable adsorption of iodine species, significantly accelerating the iodine redox reaction kinetics. Specifically, it reaches a discharge capacity of 183.07 mAh g −1 at 1.0C ever after 200 cycles (1.0C = 211 mAh g −1 ). Moreover, it also has excellent cycling performance, maintaining 81.33 % capacity after 5000 cycles. Additionally, NC@TC cathodes maintain good electrochemical performance under high current conditions and pouch cell structures. This work highlights the potential of MXene-based composites as promising iodine host materials for advanced Zn–I 2 batteries.
研究领域:
电化学储能
·
材料科学
·
纳米复合材料
·
能源化学
·
电池技术
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产品关联
DOI
高影响因子
JOURNAL OF DAIRY SCIENCE
·
2022
·
IF 4.225
Bolong Fang,Juan Peng,Gan Zhang,Keyu Xing,Wenyao Chen,Daofeng Liu,Shan Shan,Yonghua Xiong,Weihua Lai
ABSTRACT Escherichia coli O157:H7 is a type of hazardous bacteria in the field of food safety. A sensitive and effective method is urgently needed to detect it, avoiding enormous harm for the human health. In this study, we synthesized stable Ag + -doped gold nanoclusters (Ag-AuNC) with a fluorescence intensity 4.8 times stronger than that of AuNC. It was further demonstrated that Ag 0 existing in the AuNC core and a fraction of Ag + anchored on the AuNC shell eliminated the surface defects and improved the luminescent properties of AuNC. A combination of I 2 and I − was used to quench fluorescence-enhanced Ag-AuNC, which was first applied in ELISA for detecting E. coli O157:H7 to improve the sensitivity. In the presence of E. coli O157:H7, the biotinylated anti- E. coli O157:H7 mAb and streptavidin-alkaline phosphatase would be immobilized and catalyze l -ascorbic acid 2-phosphate sesquimagnesium salt hydrate to produce ascorbic acid. After addition of KIO 3 , I 2 /I − were generated. The I 2 could trigger oxidative etching of Ag-AuNC and I − could combine with Ag + to decrease the Ag + concentration of Ag-AuNC, which resulted in fluorescence quenching of Ag-AuNC. Under optimal conditions, the linear range of I 2 /I − -mediated fluorescence quenching of Ag-AuNC-based immunoassay for detecting E. coli O157:H7 was 3.3 × 10 3 to 10 6 cfu/mL, with a detection limit of 9.2 × 10 2 cfu/mL, 10.7-fold lower than that of the traditional ELISA. The proposed immunoassay exhibits excellent sensitivity, specificity, recovery, and accuracy, which is useful for quantitative detection of E. coli O157:H7 in food safety.
研究领域:
食品安全
·
纳米技术
·
分析化学
·
微生物学
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DOI
高影响因子
Nano-Micro Letters
·
2026
·
IF 38.5
Yuxuan Jiang,Bingxin Sun,Mohsen Shakouri,Bin He,Wang Zhang,Ran Wang,Tianxiao Sun,Huan Pang
Aqueous zinc-iodine batteries (AZIBs) show promise for grid-scale energy storage, but they are hampered by polyiodide shuttling, sluggish iodine redox kinetics, and irreversible active-site poisoning caused by uncontrolled adsorption. We provide a comprehensive screening of M 1 (M 1 = P, S, B) heteroatom dopants, and P is identified as the best candidate for achieving coordination-tuned, moderate adsorption that balances adsorption and catalytic activity while mitigating site poisoning. Using phytic acid as both the P source and an etchant, we create a universal in situ approach to core–shell single-atom catalysts (M 2 -P-CSNC, M 2 = Fe, Co, Ni). The unique core–shell structure achieves stable confinement of polyiodides, rapid ion transport, and protection of active sites, while in situ P doping precisely regulates the local electronic environment and d -band center of the Fe–N x active centers. In situ characterization confirms that Fe–P-CSNC has a strong reversible anchoring ability for polyiodides, which can significantly accelerate redox kinetics. The optimized Fe–P-CSNC/I 2 exhibits almost no capacity decay after 20,000 cycles at a current density of 2 A g −1 . This work’s facile heteroatom doping strategy for electronic modulation offers a reference for high-performance catalyst design in conversion-type energy storage systems. Kindly check and confirm the edit made in the title.1. We have checked and confirmed the edited title.2. We found some issues with Figure 3d and have uploaded the revised image as an attachment.
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PubMed
高影响因子
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