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Boron-tailored starbon for fast-charging and stable-cycling lithium-ion batteries. 为快速充电和稳定循环的锂离子电池量身定制的硼碳素。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-15 Epub Date: 2026-09-08 DOI: 10.1016/j.jcis.2026.141550
Junzhe Zhang, Na Bai, Shunan Lin, Danfeng Zhang, Peng Li, Liyong Wang, Yan-Bing He, Huiqi Wang
{"title":"Boron-tailored starbon for fast-charging and stable-cycling lithium-ion batteries.","authors":"Junzhe Zhang, Na Bai, Shunan Lin, Danfeng Zhang, Peng Li, Liyong Wang, Yan-Bing He, Huiqi Wang","doi":"10.1016/j.jcis.2026.141550","DOIUrl":"10.1016/j.jcis.2026.141550","url":null,"abstract":"<p><p>Starbon derived from starch exhibits tunable surface functionality and high porosity, making them prominent candidates in energy storage technology. However, the poor fast-charging and limited stable-cycling properties of starbon limits the broad applications of lithium-ion batteries (LIBs) in practical scenarios. Herein, a boron-tailored approach was proposed to promote Li-ion migration and retard capacity decay of starbon anode. A boron solid-solution phase such as BC<sub>2</sub>O was formed in the starbon framework by a simple pentaborate starch hydrothermal reaction and annealing process, and then boron quantum dots (BQDs) were confined within conductive boron-doped starbon. The electron-deficient BQDs endow the boronated starbon framework with superior electrochemical performance, vastly enabling the electrochemical activity of boron as well as providing more active sites for ion insertion and extraction, thus increasing capacity and improving ion charge/diffusion and transfer. As an anode material for LIBs, BQDs/Starbon anode exhibits a high discharge capacity of 928 mAh g<sup>-1</sup> at 0.05 A g<sup>-1</sup>, and the reversible specific capacity remains at 238 mAh g<sup>-1</sup> at 2 A g<sup>-1</sup> after 1000 cycles, demonstrating excellent long-term cycling stability. After cycling at a high current density of 10 A g<sup>-1</sup> to recover to the initial 0.5 A g<sup>-1</sup>, the electrode was still able to maintain a high capacity of 318 mAh g<sup>-1</sup>. The excellent lithium storage properties demonstrated the composite anode of BQDs and biomass starbon is feasible, providing more choices for the development of anode materials for lithium-ion batteries.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"726 ","pages":"141550"},"PeriodicalIF":9.6,"publicationDate":"2027-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring organic phenazine-carbon anodes for high-performance aqueous rechargeable batteries. 为高性能水性可充电电池定制有机非那嗪碳阳极。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-15 Epub Date: 2026-09-09 DOI: 10.1016/j.jcis.2026.141553
Zhijie Gao, Chao Chen, Zhimin Hao, Yanfang Xi, Hai-Wen Li
{"title":"Tailoring organic phenazine-carbon anodes for high-performance aqueous rechargeable batteries.","authors":"Zhijie Gao, Chao Chen, Zhimin Hao, Yanfang Xi, Hai-Wen Li","doi":"10.1016/j.jcis.2026.141553","DOIUrl":"10.1016/j.jcis.2026.141553","url":null,"abstract":"<p><p>Organic phenazine derivatives have emerged as promising materials for aqueous rechargeable batteries (ARBs) owing to their high theoretical capacity, molecular tunability and low cost. However, their practical application is largely constrained by poor intrinsic electronic conductivity and severe dissolution-induced capacity fading. Herein, a versatile dissolution-reprecipitation strategy is developed to construct highly integrated organic‑carbon nanocomposites for fast and durable aqueous K<sup>+</sup> storage. Nano-sized dipyridophenazine (DPPZ) is conformally reprecipitated on Ketjen Black (KB), yielding a composite with intimate interfacial coupling and continuous electron pathways. As a result, the composite delivers exceptional high-rate capability and unprecedented cycling stability, retaining 99.9% of its initial capacity over 55,000 cycles at 50 A g<sup>-1</sup>. Operando spectroscopic analyses, combined with density functional theory (DFT) calculations, reveal a highly reversible CN-K<sup>+</sup> coordination mechanism, which governs the outstanding electrochemical behavior. Furthermore, full batteries employing Ni(OH)<sub>2</sub> cathodes deliver a high discharge capacity of 113 mAh g<sup>-1</sup> at 50 A g<sup>-1</sup> along with long-term durability, demonstrating record-level high-rate capability in aqueous K<sup>+</sup> batteries. This work establishes a general and scalable strategy for advanced organic electrodes, offering a viable pathway toward safe, low-cost, and long-lifetime aqueous energy storage systems.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"726 ","pages":"141553"},"PeriodicalIF":9.6,"publicationDate":"2027-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of ordered mesoporous ceria from metal-organic frameworks for efficient acetone oxidation: Morphologic and surficial advantages induced by surfactant-templated strategies. 从高效丙酮氧化的金属有机框架中开发有序介孔铈:表面活性剂模板策略诱导的形态和表面优势。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-15 Epub Date: 2026-09-03 DOI: 10.1016/j.jcis.2026.141522
Vo Thi Thanh Thuy, Nguyen Nhat Huy, Venkata Subbaiah Munagapati, Jet-Chau Wen, Yu-Chih Tsai, Wei-Hsin Chen, Yiu Fai Tsang, Kun-Yi Andrew Lin
{"title":"Development of ordered mesoporous ceria from metal-organic frameworks for efficient acetone oxidation: Morphologic and surficial advantages induced by surfactant-templated strategies.","authors":"Vo Thi Thanh Thuy, Nguyen Nhat Huy, Venkata Subbaiah Munagapati, Jet-Chau Wen, Yu-Chih Tsai, Wei-Hsin Chen, Yiu Fai Tsang, Kun-Yi Andrew Lin","doi":"10.1016/j.jcis.2026.141522","DOIUrl":"10.1016/j.jcis.2026.141522","url":null,"abstract":"<p><p>Cerium oxide (CeO<sub>2</sub>) is one of the most effective catalysts for volatile organic compound (VOC) oxidation. However, the construction of ordered mesoporous CeO<sub>2</sub> architectures through sustainable synthesis routes remains highly challenging. Metal-organic frameworks (MOFs) are promising sacrificial templates for the synthesis of oxides. Herein, we report a surfactant-regulated, alkali-metal-assisted aqueous strategy to construct ordered mesoporous CeO<sub>2</sub> via UiO-66(Ce) templating. Pluronic was employed as a soft template, while inorganic bases (LiOH, NaOH, and KOH) were used to promote H<sub>2</sub>BDC deprotonation in water. The Li<sup>+</sup>, Na<sup>+</sup>, and K<sup>+</sup> cations are believed to influence the self-assembly of UiO-66(Ce) framework (CeULi, CeUNa, and CeUK, respectively), leading to differences in the properties of the resulting particles. CeO<sub>2</sub> derived from CeULi at low temperature, denoted as cCeULi, exhibited outstanding acetone conversion, reaching 90% at 207 °C. This is due to its mesoporous structure, the presence of Ce<sup>3+</sup>defects, and surface oxygen mobility. The cCeULi catalyst performed well over 10 cycles, averaging 87.9% efficiency over 25 h at 200 mg catalyst, 100 cc/min flow rate, and 600 ppm acetone. Also, cCeULi proved highly resistant to water vapor (5-10 vol%). In-situ DRIFTS analysis indicates that the acetone oxidation on cCeULi follows a Mars-van Krevelen mechanism involving lattice oxygen. Overall, the combination of morphological structure and surface chemical properties plays a key role in catalytic activity. This study is an important reference for the future development of ordered mesoporous CeO<sub>2</sub> derived from MOFs.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"726 ","pages":"141522"},"PeriodicalIF":9.6,"publicationDate":"2027-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electron-deficient boron-containing additive induced Lewis acid interface with O-S/B-S chemical adsorption of polysulfides for durable sodium-sulfur batteries. 含缺电子硼添加剂诱导多硫化物O-S/B-S化学吸附的Lewis酸界面。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-15 Epub Date: 2026-09-01 DOI: 10.1016/j.jcis.2026.141491
Jing Zhang, Fei Wang, Ying Han, Jiayi Feng, Jia Zeng, Fengping Xiao, Yuanyuan Gao, Peng Hu
{"title":"Electron-deficient boron-containing additive induced Lewis acid interface with O-S/B-S chemical adsorption of polysulfides for durable sodium-sulfur batteries.","authors":"Jing Zhang, Fei Wang, Ying Han, Jiayi Feng, Jia Zeng, Fengping Xiao, Yuanyuan Gao, Peng Hu","doi":"10.1016/j.jcis.2026.141491","DOIUrl":"10.1016/j.jcis.2026.141491","url":null,"abstract":"<p><p>Room-temperature sodium‑sulfur (RT Na-S) batteries hold great promise for large-scale energy storage, yet they face severe challenges from polysulfide shuttling and sodium dendrite growth. To address these challenges, this study proposes an innovative strategy by introducing a boron-based additive, 2,4,6-trimethoxyboroxine (TMBX), into the propylene carbonate (PC)/NaClO₄ electrolyte to in-situ construct a boron-rich interphase. On the cathode side, the cathode electrolyte interface (CEI) layer is enriched with electron-deficient Lewis acidic B₂O₃, which chemisorbs soluble sodium polysulfides via BS and OS bonds. Simultaneously, this interphase forms a physical barrier due to its high mechanical strength and favorable structural properties, and the two effects work synergistically to suppress the shuttle effect. On the anode side, the inner solid electrolyte interface (SEI) layer that rich in boron-containing inorganic components can effectively inhibits sodium dendrite nucleation. Benefiting from the synergistic regulation of the boron-containing interphase, the TMBX-modified electrolyte endows Na-S cells with excellent performance. This work establishes a rational electrolyte design principle of leveraging boron-centered Lewis acidity for targeted polysulfide anchoring, coupled with a high-modulus interphase, offers a scalable and efficient strategy toward durable RT Na-S batteries.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"726 ","pages":"141491"},"PeriodicalIF":9.6,"publicationDate":"2027-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Functionalization of separator with two-dimensional anionic nanosheets for interfacial regulation of lithium deposition in lithium metal batteries. 二维阴离子纳米片功能化隔膜对锂金属电池中锂沉积界面调控的研究。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-15 Epub Date: 2026-09-01 DOI: 10.1016/j.jcis.2026.141500
Ying Zhang, Yuqin Wang, Xiaoyang Zheng, Guanyao Wang, Jinlong Jiang, Sikandar Iqbal, Xianzhong Yang, Haoxuan Liu, Chao Wu
{"title":"Functionalization of separator with two-dimensional anionic nanosheets for interfacial regulation of lithium deposition in lithium metal batteries.","authors":"Ying Zhang, Yuqin Wang, Xiaoyang Zheng, Guanyao Wang, Jinlong Jiang, Sikandar Iqbal, Xianzhong Yang, Haoxuan Liu, Chao Wu","doi":"10.1016/j.jcis.2026.141500","DOIUrl":"10.1016/j.jcis.2026.141500","url":null,"abstract":"<p><p>Lithium metal anodes suffer from dendrite growth, low coulombic efficiency, and safety concerns, limiting their practical application in rechargeable batteries. Herein, polypropylene (PP) separators are functionalized with ultrathin 2D anionic (H<sub>3</sub>Sb<sub>3</sub>P<sub>2</sub>O<sub>14</sub>) HSPO nanosheets to construct a negatively charged interfacial layer. The HSPO layer improves electrolyte affinity, increases the Li<sup>+</sup> transference number from 0.5 to 0.8, and guides a more homogeneous Li<sup>+</sup> flux toward the lithium metal surface. Density functional theory calculations indicate stronger interactions between HSPO and Li/electrolyte species than those on pristine PP, while finite-element simulations and in situ optical microscopy reveal a more uniform electric-field distribution and regulated lithium deposition process. As a result, Li||Cu cells show improved plating/stripping stability over 250 cycles, and the Li||Li symmetric cell achieves a sevenfold increase in lifespan. Notably, the interfacial regulation strategy enables exceptional full-cell durability, delivering 2000 cycles for Li||LiFePO<sub>4</sub> at 1C and 12,000 cycles for Li||I<sub>2</sub> at 5C. This work highlights charged two-dimensional nanosheets as interfacial modifiers for separator-mediated regulation of ion transport and lithium deposition.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"726 ","pages":"141500"},"PeriodicalIF":9.6,"publicationDate":"2027-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of an organic-copper composite modified layer via displacement reaction on zinc anode. 锌阳极上置换反应制备有机铜复合改性层。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-15 Epub Date: 2026-09-04 DOI: 10.1016/j.jcis.2026.141536
Teng Yu, Meiting Fu, Mengyu Liu, Zhen Hong, Wenxiang Sun, Haojie Liang, Lei Wang, Qi Sun, Caixia Li
{"title":"Preparation of an organic-copper composite modified layer via displacement reaction on zinc anode.","authors":"Teng Yu, Meiting Fu, Mengyu Liu, Zhen Hong, Wenxiang Sun, Haojie Liang, Lei Wang, Qi Sun, Caixia Li","doi":"10.1016/j.jcis.2026.141536","DOIUrl":"10.1016/j.jcis.2026.141536","url":null,"abstract":"<p><p>Aqueous zinc-ion batteries face severe challenges in practical cycling, mainly including irregular zinc dendrite growth and unstable interfacial reactions, which greatly degrade the cycling performance. Herein, via a facile immersion method relying on a one-step in-situ spontaneous displacement reaction, an organic-inorganic composite layer composed of organic components and copper nanoparticles are fabricated on the surface of the zinc metal anode. The upper layer is enriched with carboxyl groups and Cu<sup>2+</sup>, constructing the upper layer by coordination interactions. Acting as migration sites and transport pathways for Zn<sup>2+</sup>, the as-formed SEI layer induces the uniform and ordered deposition of zinc. The bottom layer is composed of zincophilic copper clusters, which can form a compact physical shielding layer on the zinc anode surface and effectively inhibit interfacial corrosion. Benefiting from the synergistic effect, the symmetric cell achieves an ultra-long cycle life of over 4000 h at 3 mA cm<sup>-2</sup>, and still maintains a cycle life exceeding 2000 h even at a high current density of 10 mA cm<sup>-2</sup>. Meanwhile, the Cu-BTC@Zn//MVO full battery exhibits a 57% increase in capacity retention compared with bare Zn anode after 700 cycles. Meanwhile, this work reveals the synergistic regulation mechanism of the organic-inorganic composite layer toward Zn deposition, and provides a facile and practical strategy to construct stable artificial SEI layers for high performance zinc-metal anodes.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"726 ","pages":"141536"},"PeriodicalIF":9.6,"publicationDate":"2027-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A ratiometric fluorescence sensor based on integrated bimetallic Zr/Eu-MOF for rapid and visual detection of glyphosate. 基于集成双金属Zr/Eu-MOF的比例荧光传感器用于草甘膦的快速和视觉检测。
IF 6.7 1区 化学
Talanta Pub Date : 2027-01-01 Epub Date: 2026-07-15 DOI: 10.1016/j.talanta.2026.130308
Haojie Shi, Wei Wang, Haoyu Shi, Liangang Mao, Lan Zhang, Lizhen Zhu, Chi Wu, Xingang Liu
{"title":"A ratiometric fluorescence sensor based on integrated bimetallic Zr/Eu-MOF for rapid and visual detection of glyphosate.","authors":"Haojie Shi, Wei Wang, Haoyu Shi, Liangang Mao, Lan Zhang, Lizhen Zhu, Chi Wu, Xingang Liu","doi":"10.1016/j.talanta.2026.130308","DOIUrl":"10.1016/j.talanta.2026.130308","url":null,"abstract":"<p><p>The widespread use of glyphosate in agriculture has raised concerns about environmental contamination and associated health risks, creating an urgent need for rapid, sensitive, and field-deployable analytical tools. In this work, Zr/Eu-metal-organic framework (Zr/Eu-MOFs) as an integrated bimetallic ratiometric fluorescent hydrogel sensor for fast and highly sensitive visual detection of glyphosate has been developed. By doping Eu<sup>3+</sup> into a robust Zr-based MOF framework, Zr/Eu-MOFs exhibit dual-emission bands at 445 and 618 nm, enabling an intrinsic self-referenced signal without multicomponent assembly. Upon glyphosate addition, the sensor responds within 10 s. Zr/Eu-MOFs display a reliable ratiometric response over 0.05 - 10.0 mg/L with a low detection limit of 0.03 mg/L (0.2 μmol/L), which is far below the permissible maximum residue limit (MRL) for drinking water by the US EPA and China (4.1 μmol/L). Mechanistic evidence indicates that glyphosate forms P-O-Zr coordination linkages and interfacial interactions which modulate the ligand-to-metal charge transfer (LMCT) process, resulting in an enhanced ratiometric fluorescence response at 445 nm, while the Eu<sup>3+</sup> emission at 618 nm remains essentially unchanged. Moreover, an agarose hydrogel format coupled with smartphone image analysis enables rapid visual detection. A spraying-enabled fluorescence imaging strategy further allows rapid screening of glyphosate contamination on leaves, apple surfaces, and soil-water matrices under UV illumination. Overall, this work provides a facile, integrated, and visually readable ratiometric platform for on-site glyphosate monitoring.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"311 ","pages":"130308"},"PeriodicalIF":6.7,"publicationDate":"2027-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148454219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Autocatalytic DNA cascade circuits via split-triggered recombination for ultrasensitive programmable nucleic acid detection. 自催化DNA级联电路通过分裂触发重组超灵敏的可编程核酸检测。
IF 6.7 1区 化学
Talanta Pub Date : 2027-01-01 Epub Date: 2026-07-07 DOI: 10.1016/j.talanta.2026.130262
Shanshan Tao, Suqin Wang, Songbai Zhang, Hongbo Li, Ruqin Yu
{"title":"Autocatalytic DNA cascade circuits via split-triggered recombination for ultrasensitive programmable nucleic acid detection.","authors":"Shanshan Tao, Suqin Wang, Songbai Zhang, Hongbo Li, Ruqin Yu","doi":"10.1016/j.talanta.2026.130262","DOIUrl":"10.1016/j.talanta.2026.130262","url":null,"abstract":"<p><p>Accurate detection of microRNAs is of great significance for the clinical diagnosis and therapeutic guidance of cancer. Herein, we have established an isothermal self-catalytic DNA circuit that can combine an autocatalytic hairpin assembly (ACHA) converter with autocatalytic hybridization chain reaction (AHCR) amplification for the sensitive detection of miRNA-21. HCR is initiated by the recognition of the target analyte, generating new trigger strands that subsequently activate the CHA amplifier. One terminus of the CHA amplifier is engineered to expose the identical HCR initiator sequence, thereby enabling sustained HCR propagation. The DNAzyme moiety at the opposite terminus functions as a fluorescent signal reporter, efficiently cleaving the fluorogenic reporter probe. Therefore, the self-catalytic feedback loop between the HCR and CHA systems allows trace targets to produce fluorescence signals with exponential amplification. This circuit conducted a sensitive, reliable and universal analysis of miRNA-21, with a detection limit of 33.4 fM. Self-feedback cascade circuits provide a promising tool for molecular sensing in complex biological environments, this cascaded circuit can be used for the analysis of miRNA-21 in human serum samples. It has broad application prospects in low-abundance biomolecular sensing and early diagnosis of diseases.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"311 ","pages":"130262"},"PeriodicalIF":6.7,"publicationDate":"2027-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synchronous modulation of fluorescence and oxidase-mimicking activity in a Mn-based MOF nanozyme via post-synthetic metal exchange for Cu2+ sensing. 基于合成后金属交换的锰基MOF纳米酶的荧光和氧化酶模拟活性同步调制
IF 6.7 1区 化学
Talanta Pub Date : 2027-01-01 Epub Date: 2026-07-11 DOI: 10.1016/j.talanta.2026.130300
Linying Cheng, Xiang Liu, Zixin Zhang, Jing Liu, Jianru Tang, Xiaohua Zhu, Youyu Zhang, Meiling Liu
{"title":"Synchronous modulation of fluorescence and oxidase-mimicking activity in a Mn-based MOF nanozyme via post-synthetic metal exchange for Cu<sup>2+</sup> sensing.","authors":"Linying Cheng, Xiang Liu, Zixin Zhang, Jing Liu, Jianru Tang, Xiaohua Zhu, Youyu Zhang, Meiling Liu","doi":"10.1016/j.talanta.2026.130300","DOIUrl":"10.1016/j.talanta.2026.130300","url":null,"abstract":"<p><p>Copper ions (Cu<sup>2+</sup>) are essential micronutrients but become hazardous when accumulated in excess, necessitating reliable, sensitive, and field-deployable detection methods. Herein, we report a fluorescent Mn-based MOF nanozyme (Mn-TCPP) that exhibits intrinsic oxidase-like activity, capable of catalyzing the oxidation of non-fluorescent o-phenylenediamine (OPD) to fluorescent 2,3-diaminophenazine (DAP) with an emission peak at 560 nm, while the Mn-TCPP itself displays characteristic fluorescence at 655 nm. Upon exposure to Cu<sup>2+</sup>, the stronger affinity of Cu<sup>2+</sup> toward the porphyrinic TCPP ligand displaces Mn<sup>2+</sup> from the framework, forming Cu-TCPP. This metal-exchange process simultaneously quenches the 655 nm fluorescence of the MOF and attenuates its oxidase-mimicking activity, whereas free Cu<sup>2+</sup> in solution independently catalyzes OPD oxidation, further enhancing the 560 nm emission. Leveraging this dual-response mechanism, we develop a ratiometric fluorescence sensing strategy for Cu<sup>2+</sup> detection based on the intensity ratio F<sub>560</sub>/F<sub>655</sub>. The calibration curve follows a linear equation: F<sub>560</sub>/F<sub>655</sub> = 0.201x-0.001 (0.2-10 μM, R<sup>2</sup> = 0.985) and y = 0.002x+2.061 (10-100 μM, R<sup>2</sup> = 0.994) with the limit of detection (LOD) of 81 nM (S/N = 3). The sensor exhibits excellent selectivity over competing metal ions, and the method reliability is validated by standard addition recovery experiments in real water and rice samples. Furthermore, the Mn-TCPP nanozyme is embedded into an agarose hydrogel matrix, enabling visual, instrument-free monitoring of Cu<sup>2+</sup> contamination: increasing Cu<sup>2+</sup> concentrations induce a discernible fluorescence color transition from orange to yellow under 365 nm illumination. This work presents a tunable MOF platform that exploits competitive targets synchronous modulation of fluorescence and enzyme-mimicking activity, providing a robust, selective, and field-deployable ratiometric sensor for Cu<sup>2+</sup>.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"311 ","pages":"130300"},"PeriodicalIF":6.7,"publicationDate":"2027-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148454257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Triphase interface engineering in bilayer aerogels for highly efficient water evaporation and photothermal-photocatalytic hydrogen peroxide production. 用于高效水蒸发和光热-光催化过氧化氢生产的双层气凝胶三相界面工程。
IF 9.6 1区 化学
Journal of Colloid and Interface Science Pub Date : 2027-01-01 Epub Date: 2026-09-05 DOI: 10.1016/j.jcis.2026.141523
Yuancheng Ji, Yan Zhu, Yang Yang, Yijie Xu, Chunyu Qi, Yan Li, Shuangjiang Yu, Junqiu Liu, Hongcheng Sun
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