ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Yimeng Li,Jiayao Wang,Yi Ran,Yiwei Liu,Xiaopeng Hu
Background A dual-mode fluorescence/colorimetric aptasensor was developed for the sensitive detection of isocarbophos, an organophosphorus pesticide posing significant public health risks. Using Zn,Ce-MOF nanocomposites, this sensor integrated magnetic separation and signal amplification. This integrated biosensing strategy offers a promising tool for environmental safety assurance and food quality control applications. Results The Zn,Ce-MOF nanozyme of this sensor serves as both a carrier of 3,3′,5,5′-tetramethylbenzidine (TMB) and oxidase mimic, facilitating enzyme-free TMB oxidation. The dual-readout system enables self-validating detection through independent channels (fluorescence LOD: 0.06 ng mL −1 ; colorimetric LOD: 0.09 ng mL −1 ), with robust performance, high interferent selectivity, and reproducibility. Practical validation in spiked agricultural samples yielded recovery rates of 97.7–113.6 %, confirming the platform's suitability for field-deployable pesticide monitoring. Significance This work developed a fluorescence/visual aptasensor with self-assembled TMB/Au/Zn,Ce-MOF probes for one-step magnetic separation dual-mode detection. This integrated biosensing strategy improves detection efficiency and accuracy, offering a general strategy for multimodal biosensors.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xiangshi Sun,Kongtong Yu,Yulin Zhou,Shiyan Dong,Wenji Hu,Yating Sun,Yuhuan Li,Jing Xie,Robert J. Lee,Fengying Sun,Yifan Ma,Shengnian Wang,Betty Y. S. Kim,Yifan Wang,Zhaogang Yang,Wen Jiang,Youxin Li,Lesheng Teng
The use of superoxide dismutase (SOD) is currently limited by its short half-life, rapid plasma clearance rate, and instability. We synthesized a small library of biofriendly amphiphilic polymers that comprise methoxy poly(ethylene glycol)-poly(cyclohexane-1,4-diyl acetone dimethyleneketal) (mPEG-PCADK) and mPEG-poly((cyclohexane86.7%, 1,5-pentanediol13.3%)-1,4-diyl acetone dimethylene ketal) (PK3) for the targeted delivery of SOD. The novel polymers could self-assemble into micellar nanoparticles with favorable hydrolysis kinetics, biocompatibility, long circulation time, and inflammation-targeting effects. These materials generated a better pH-response curve and exhibited better hydrolytic kinetic behavior than PCADK and PK3. The polymers showed good biocompatibility with protein drugs and did not induce an acidic microenvironment during degradation in contrast to materials such as PEG-block-poly(lactic-co-glycolic acid) (PLGA) and PLGA. The SOD that contained reverse micelles based on mPEG2000-PCADK exhibited good circulation and inflammation-targeting properties. Pharmacodynamic results indicated exceptional antioxidant and anti-inflammatory activities in a rat adjuvant-induced arthritis model and a rat peritonitis model. These results suggest that these copolymers are ideal protein carriers for targeting inflammation treatment.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Runbo Gu,Zhihui Feng,Tianyi Chen,Shusen Peng,Yongcun Ma
Nickel electroplating is a critical surface treatment technology that provides essential corrosion protection and ensures high electrical conductivity, both vital for maintaining the structural integrity and operational safety of modern metal components. However, inherent micropores within the plated layer can compromise its protective function and accelerate substrate corrosion. In this study, we present a novel, environmentally friendly, chromium-free sealing strategy based on an aminotrimethylene phosphonic acid (ATMP)-Zn²⁺ system, synergistically enhanced with benzotriazole (BTA). The specially formulated sealing bath selectively reacts with substrate exposed at pore bottoms while remaining inert to the sound nickel surface, allowing targeted pore filling through strong –PO(OH)₂–metal interactions. The resulting coating significantly reduces porosity (from 13.3 ± 1.6 cm⁻² to 1.7 ± 0.9 cm⁻²), maintains excellent electrical conductivity, and endures 2 h of neutral salt spray without corrosion. XPS and FTIR analyses confirm BTA’s synergistic role via N-H⁺···⁻O-P bonds and the optimized P-O-M coordination. This environmentally friendly approach offers a high-performance sealing solution that preserves the functional properties of Ni electroplating layers.
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MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 8
·1-9
·
IF 6.232
Wei Yu-ping,Zhang Yi-wen,Chen Jing-Shuai,Mao Chang-jie,Jin Bao-Kang
An ultrasensitive electrochemiluminescence biosensor was established based on the Zn-MOF/GO nanocomposite. Ag(I)-embedded DNA complexes were used as a signal amplification reagent. In this work, 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (TCPP) and Zn 2+ were integrated into a porphyrin paddlewheel framework (Zn-MOF) by a hydrothermal method. The synthesized Zn-MOF material has electrochemiluminescence property, and the luminescence intensity is improved after being composited with graphene oxide (GO). Based on the composite material, we constructed an ultrasensitive ECL biosensor for the p53 antibody detection. The composite material acted as an admirable substrate and then loaded plenty of p53 antigens to recognize the target (p53 antibody) accurately. Because of the bridging effect of streptavidin and biotin-conjugated goat anti-rabbit IgG (bio-ab2), the rich-C DNA with positive correlation with the target was modified on the electrode and then captured the co-reactant accelerator Ag + to amplify the signal. Therefore, the ECL biosensor response increases with increasing p53 antibody concentration. In the range 0.1 fg/mL–0.01 ng/mL, the response signal of the biosensor has a good linear relationship with the p53 antibody concentration. The detection limit is 0.03 fg/mL (S/ N = 3). Impressively, the biosensor not only featured high sensitivity, good stability, and excellent specificity for the detection of p53 antibody, but also provides a new way for early detection of cancer.
Schematic representation of the electrochemiluminescence sensor based on a Zn-MOF/GO nanocomposite, which can be applied to the determination of p53 antibody.
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高影响因子
Small
·
2022
·Vol. 18
·期 10
·2107163
·
IF 15.153
Yanyan Shao,Jin Zhao,Wenguang Hu,Zhou Xia,Jinrong Luo,Yijing Zhou,Liang Zhang,Xianzhong Yang,Ning Ma,Dongzi Yang,Qiuwei Shi,Jingyu Sun,Lei Zhang,Jingshu Hui,Yuanlong Shao
Aqueous Zn-ion batteries (ZIBs) have emerged as a promising energy supply for next-generation wearable electronics, yet they are still impeded by the notorious growth of zinc dendrite and uncontrollable side reaction. While the rational design of electrolyte composition or separator decoration can effectively restrain zinc dendrite growth, synchronously regulating the interfacial electrochemical performance by tackling the physical delamination venture between electrode and electrolyte remains a major obstacle for high-performance wearable aqueous ZIB. Herein, a category of hybrid biogel electrolyte containing carrageenan and wool keratin (CWK) is put forward to regulate the interfacial electrochemistry in aqueous ZIB. Systematic electrochemical kinetics analyses and ex situ scanning electrochemical microscopy (SECM) characterizations achieve comprehensive understanding of the keratin enhanced interfacial Zn 2+ redox reaction. Thanks to the keratin triggered selective ion permeability, the as-designed CWK hybrid biogel electrolyte manifests a promoted Zn 2+ transference number and excellent reversibility of Zn plating/stripping and outstanding Zn utilization (average Coulombic efficiency ≈98%). More impressively, the CWK hybrid biogel electrolyte also demonstrates cathode side-reaction depression and strengthened interfacial adhesion while assembled into a quasi-solid-state flexible ZIB. This work offers a strategy to synchronously solve concurrent challenges for both of Zn anode and cathode toward realistic wearable aqueous ZIB.
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高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2024
·Vol. 57
·期 46
·465502
·
IF 3.1
Yi-Han Song,Guo-Duo Yang,Tong Wang,Zhuo Wang,Su-Min Zhou,Xing-Long Wu,Hai-Zhu Sun
The integration of an artificial protective coating into the Zn metal anode is considered as a highly efficient approach to minimize growth of Zn dendrites. The present study involves the design and synthesis of NiCo nanomaterials featuring a three-dimensional (3D) open structure and an abundance of active groups on their surface. Subsequently, NiCo nanomaterials are applied as a protective coating onto Zn foil to safeguard the Zn anode. The NiCo protective coating provides a rich zincophilic site, thus enhancing the stability of the electrode and effectively inhibiting Zn dendrite growth. Hence, the NiCo@Zn\\|NiCo@Zn symmetric cell with a lifespan up to 950 h at a current density of 2 mA cm−2. When paired with NH4V4O10, the full battery exhibits satisfied ultra-long cycle stability, maintaining good capacity retention after 3000 cycles at 10 A g−1. This work provides a new idea for the practical application of zinc ion batteries.
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CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Peiyan Liu,Meiri Wang,Jing Li,Hongtao Cui,Tao Zeng,Shubin Yang,Huan Wang,Yuanyuan Liu
Rechargeable aqueous Zn//MnO 2 batteries are the promising alternatives to lithium-ion batteries owing to their high safety, high energy density, low cost, and environmental friendliness. However, the unstable MnO 2 cathode causes poor practical energy density and serious capacity fading. To overcome this issue, herein, a unique 2D nanosheets self-supported 3D δ -MnO 2 microflower hierarchical architecture is rationally designed and synthesized by taking advantage of its microwave-absorbing characteristics. The 2D nanosheets with high surface area could expose numerous active sites for ions/electrons transfer. Also, the 3D assembled structure acting as building blocks would ensure structural stability for long-life cycles. Benefiting from these synergistic merits, the δ -MnO 2 microflowers deliver a high capacity of 287.6 mA h g −1 at 0.5 C, an excellent rate capability of 202.7 mA h g −1 at 5 C, and a superior cycling retention of 76.5% over 1000 cycles at 10 C. Furthermore, a storage mechanism of H + /Zn 2+ co-insertion accompanied by the deposition of zinc sulfate hydroxide hydrate is clarified by the aid of ex-situ XRD and SEM technologies. This work provides a new pathway for developing high capacity and long lifespan ZIBs.
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Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-12
·
IF 12.264
Chen Zhe,Wang Panpan,Ji Zhenyuan,Wang Hua,Liu Jie,Wang Jiaqi,Hu Mengmeng,Huang Yan
A 2.4 V high-voltage flexible aqueous ZIB was fabricated, and superiors performances were achieved: extremely flat charging/discharging voltage plateaus (1.9/1.8 V), the smallest plateau voltage gap of 0.1 V, high energy density of 120 Wh kg −1 , high power density of 3700 W kg −1 , and excellent rate capability of 25 C.
The battery posed application potential in wearable electronics with extreme safety against tough destructions including hammering, sewing, punching, and soaking.
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Materials Today Energy
·
2021
·
IF 7.311
H. Chen,S. Cai,Y. Wu,W. Wang,M. Xu,S.-J. Bao
Rechargeable aqueous zinc-manganese oxide (Zn/MnO 2 ) batteries using Mn 2+ as the electrolyte additive have recently attracted remarkable attention owing to their largely improved cycling stability. Herein, we find that the Zn/MnO 2 batteries with Mn 2+ additive still exhibit rapid capacity fading when cycling between 0.8 and 1.6 V vs. Zn/Zn 2+ , its improved performance is only observed when charged to a higher slope region (>1.6 V), which suggests that the improved performance of Mn 2+ added Zn/MnO 2 is not caused by suppressing the dissolution of MnO 2 cathode. Inspired by this discovery, successive electrochemcial conversion reactions are scrutinized and proved for evaluating the performance of the Zn/MnO 2 batteries after using Mn 2+ as the electrolyte additive. By adding a certain amount of Mn 2+ into the electrolyte, the battery can improve the capacity and cycling abilitily through converted electrodepostion of Mn 2+ . Specifically, the zinc sulfate hydroxide hydrate (Zn 4 SO 4 ·(OH) 6 ·4H 2 O) large-flake can initiate the generation of zinc vernadite nanosheets (Zn x MnO(OH) y ) during the charge process (around 1.5 V vs. Zn/Zn 2+ ), and then the zinc vernadite nanosheets can reversibly re-back to Zn 4 SO 4 ·(OH) 6 ·4H 2 O during the discharge process. Importantly, part of zinc vernadite nanosheets irreversibly transform into tunnel-like MnO 2 nanocrystalline material when charging higher than 1.6 V vs. Zn/Zn 2+ , which can improve the specific capacity of Zn/MnO 2 batteries in subsequent cycles and then make the Zn/MnO 2 batteries exhibit excellent cycles stability. Finally, through a special zinc/carbon nanotube (Zn/CNT) battery, this successive electrochemcial conversion reactions are further verified.
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CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Zaizhi Yang,Pengbo Wang,Zhentao Wang,Juan Liu,Lei Zhang,Sujuan Zhong,Bin Tang,Dong Xu
In this study, the challenge of high-temperature and long-time sintering of (Zn, Ta) co-doped TiO 2 ceramics is solved successfully using flash sintering technology. Joule heating and a high heating rate make the sample compact rapidly at low temperatures (1050 °C in 24 min). When the electric field was equal to 200 V/cm, high permittivity (ε' ∼ 1.32 × 10 4 ), low dielectric loss tangent (tan δ ∼ 0.27), and nonlinear coefficient ( α ∼ 5.8) values were obtained. Flash sintered samples have more free electrons , resulting in a high dielectric constant . Further, the higher the electric field, the smaller the grain resistance of the sample; this condition is conducive to reducing dielectric loss . giant dielectric performance is explained by the combined action of the electron-pinned defect dipole theory and the internal barrier layer capacitance effect. Therefore, this study provides a promising prospect for the green preparation of co-doped TiO 2 giant dielectric ceramics .
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Yuxi Yang
In this work, Ni-Zn-doped porous carbon materials (Ni@C) with regular dodecahedral morphologies were synthesized by calcination of Ni-doped ZIF-8 as a template, and applied in electrochemical sensing and quantitative electrochemical sensors to detect Hydroquinone (HQ), The uniformly dispersed Ni in Ni@C serves as the catalytically active material, and the synergistic effect of elemental Zn and porous carbon improves the electron transport efficiency of the material. The developed Ni@C electrochemical sensor detected HQ alone with a sensitivity of 180 μA μM -1 cm -2 and a linear range of 9.1 nM-80 μM. The results demonstrate that the enzyme-free electrochemical sensor based on Ni@C/GCE exhibits good sensitivity, a wide linear range and excellent selectivity. At the same time, the problem of the general conductivity of metal-organic framework (MOF) materials is solved, which provides a new idea for the application of such new materials in the direction of electrochemistry.
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Catalysis Science & Technology
·
2020
·Vol. 10
·期 13
·4412-4423
·
IF 5.721
Qiang Liu,Zhenbo Zhao,Masahiko Arai,Chao Zhang,Ke Liu,Ruhui Shi,Peixuan Wu,Zhuangqing Wang,Weiwei Lin,Haiyang Cheng,Fengyu Zhao
The transformation of γ-valerolactone (GVL) into 1,4-pentanediol (1,4-PDO) and 2-methyltetra-hydrofuran (2-MTHF) in the presence of H2, one of the useful biomass conversion and utilization processes, was investigated with monometallic Cu/Al2O3 and bimetallic ZnCu/Al2O3 catalysts. A 10 wt% Cu-loaded monometallic catalyst produced 1,4-PDO and 2-MTHF in comparable quantities at a medium conversion (∼50%). When Zn was added in a range of Zn/Cu molar ratios of up to 2, in contrast, the catalysts yielded 1,4-PDO in a high selectivity of about 97% at low and high conversion levels. In addition, the 1,4-PDO selectivity over the ZnCu/Al2O3 catalysts remained almost unchanged during recycled runs. That is, the addition of Zn to Cu/Al2O3 switched the product selectivity and improved the catalyst stability and reusability. Furthermore, the physicochemical properties of the catalysts were characterized by several methods including XRD, TEM, TPR, XPS, FTIR of adsorbed pyridine, and so on. On the basis of those results, the relationships between the catalytic performance (activity, selectivity, and reusability) and the catalyst structural features were discussed.
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