JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Yuan Jin,Yanhong Zhang,Nanke Ma,Guangli Li
A novel Pt/TiO 2 /MWCNT-COOH nanocomposite was fabricated for ultrasensitive fleroxacin detection. • The synergistic effect of MWCNT-COOH and Pt/TiO 2 effectively prevents nanoparticle agglomeration and enhances electron transfer. • The sensor exhibits a wide linear range (0.01–10 μM), a low detection limit (0.002 μM), and excellent anti-interference capability. • Long-term stability of 90.3% after 25 days demonstrates outstanding practical durability. • Successful application in tap water and milk samples with recoveries of 98.4%–105.1% confirms real-world feasibility. A novel electrochemical sensor based on a Pt/TiO 2 /MWCNT-COOH nanocomposite was developed for the ultrasensitive detection of fleroxacin (FLX). To construct this platform, Pt/TiO 2 nanoparticles were first synthesized via a hydrothermal method and then uniformly anchored onto carboxylated multi-walled carbon nanotubes through ultrasonic-assisted dispersion. Various characterizations confirmed the successful formation of this heterogeneous structure, which effectively mitigated nanoparticle agglomeration and provided a significantly expanded electroactive area. As a result of this unique architecture, the Pt/TiO 2 /MWCNT-COOH/GCE exhibited substantially enhanced electrocatalytic activity toward FLX oxidation compared to bare and single-component modified electrodes, an improvement attributed to the synergistic effect between the excellent conductivity of MWCNT-COOH and the high catalytic activity of Pt/TiO 2 . Under optimized conditions, the sensor demonstrated a wide linear range (0.01–10 μM), a low limit of detection (0.002 μM), as well as remarkable anti-interference capability, good reproducibility, and long-term stability (sustained 90.3% for 25 days). Benefiting from these outstanding analytical properties, the sensor was successfully applied to detect FLX in tap water and milk samples, achieving satisfactory recoveries ranging from 98.4% to 105.1%. These results highlight its significant potential for antibiotic residue monitoring in complex real-world samples. Scheme 1. Schematic representation of the fabrication of Pt/TiO 2 /MWCNT-COOH/GCE for the sensitive determination of FLX. A Pt/TiO 2 /MWCNT-COOH nanocomposite was constructed as an electrochemical sensing platform for fleroxacin (FLX). The three-dimensional conductive network effectively prevents nanoparticle agglomeration and provides abundant active sites. The sensor achieves a wide linear range (0.01–10 μM), low detection limit (0.002 μM), and excellent stability (90.3% after 25 days). Successful FLX detection in tap water and milk demonstrates its practical application potential. Download: Download high-res image (119KB) Download: Download full-size image
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Guangli Li,Xuan Wan,Qian Zheng,Mengyu Yang,Yonghui Xia,Xiaoman Qi,Tianyu Wang,Zhi Wu
The overuse of gatifloxacin seriously pollutes the environment and cause potential harm to our health. Hence, it is imperative to develop a rapid and sensitive method for gatifloxacin determination. Herein, an efficient electrocatalyst was designed for the voltammetric determination of gatifloxacin based on carboxylated multiwalled carbon nanotubes warped ZnCo 2 O 4 nanoparticles (ZnCo 2 O 4 /MWCNT-COOH). The ZnCo 2 O 4 nanoparticles were synthesized by a green deep eutectic solvent-mediated ion-thermal route, and further composited with MWCNTs-COOH. The ZnCo 2 O 4 / MWCNT-COOH combined the catalytic activity of ZnCo 2 O 4 with the high electrical conductivity of MWCNT-COOH, aiming to improve the electrochemical sensing performance toward gatifloxacin. The synergistic interactions between ZnCo 2 O 4 and MWCNT-COOH endowed the ZnCo 2 O 4 /MWCNT-COOH with extraordinary catalytic activity for gatifloxacin oxidation . Consequently, the ZnCo 2 O 4 /MWCNT-COOH displayed a wide linear response range (0.01–10 μM) for detecting gatifloxacin, with a high sensitivity (29.64 μA μM −1 cm −2 ) and low detection limit (2.0 nM). The ZnCo 2 O 4 /MWCNT-COOH showed robust voltammetric responses against potential interfering species, and maintained highly stable responses for at least two weeks. Moreover, the ZnCo 2 O 4 /MWCNT-COOH/GCE was successfully used to detect gatifloxacin in water samples with satisfactory recoveries (97.22 − 104.5 %). Together with its low cost, environment friendly and rapid response, the ZnCo 2 O 4 /MWCNT-COOH shows promising prospects in trace detection of gatifloxacin.
研究领域:
分析化学
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环境科学
·
材料科学
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高影响因子
Small
·
2024
·Vol. 20
·期 50
·2405908
·
IF 13
Lei Wang,Letu SiQin,Yiming Wang,Shuyu Li,Wenjing Xin,Jingyuan Guo,Ruijian Liu,Hongmei Luan,Chengjun Zhu
The Sol-gel precursor solution reaction mechanism has a significant impact on the Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cells. It is discovered that in the Cu 2 ZnSnS 4 (CZTS) precursor solution (CZTS-PS) in the preparation, there is an association reaction among Cu 2+ , thiourea (Tu), and carboxyl (-COOH), which is an important reason for the undesirable CZTSSe solar cells. The strong association reaction generates excessive Cu 2+ ions, forming the Cu x Se secondary phase on the surface of the CZTSSe absorber. The secondary phase causes a short circuit and deterioration of gadget performance. Following a 6-h aging period for the CZTS-PS, the average photoelectric conversion efficiency (PCE) of the device is enhanced to 8.02%, and there is also an improvement in device uniformity, as evidenced by a decrease in the standard deviation to less than 1. To inhibit the association reaction and eliminate the aging time phenomenon, a strategy is developed using hydrochloric acid to regulate the CZTS-PS environment. This strategy shifts the REDOX reaction in Cu 2+ +Sn 2+ toward the formation of Cu 1+ +Sn 4+ , leading to a decrease in the defect concentrations of V Sn (−/0) and Cu Sn (−/0), which increases the carrier concentration and reduces the impact of band tailing. The average power conversion efficiency (PCE) of the devices improved from 7.45% to 9.26%, the PCE of the best-performing CZTSSe solar cells increased from 9.25% to 9.83%, and the consistency among the devices is further enhanced, as indicated by a reduction in the standard deviation from 0.98 to 0.44. Ultimately, the device performance of the Cu 2+ +Sn 2+ -DMF system improved by 11.01% (without the MgF 2 layer) after optimization. This study serves as a reference for regulating the environment of the CZTS-PS to further enhance the CZTSSe devices' performance, and the photoelectric conversion efficiency is improved by ≈30%.
研究领域:
材料科学
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化学工程
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能源技术
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Nana Tang,Aiting Chen,Yanping Wei,Shuting Shi,Chuanqin Zhou,Quanguo He,Jun Liu
Acyclovir (Acyclovir, ACV) is an antiviral drug which, despite its favorable safety profile, can have systemic adverse effects, following improper use. This study prepared a clay-like two-dimensional transition metal carbide Ti 3 C 2 by etching Ti 3 AlC 2 with LiF and HCl. Carboxylated multi walled carbon nanotubes (Carboxylated multi-walled carbon nanotubes , MWCNTs-COOH) were combined with Ti 3 C 2 using chitosan (Chitosan, CS) as solvent and ultrasonic treatment . The nanocomposite was then modified onto the surface of a glassy carbon electrode (Glassy carbon electrode, GCE) to develop an electrochemical sensor for the detection of ACV. The Ti 3 C 2 -CS-MWCNTs-COOH/GCE nanocomposite was characterized by X-ray diffractometry (X-ray diffractometry, XRD), scanning electron microscope (Scanning electron microscope，SEM), and cyclic voltammetry (Cyclic voltammetry，CV), as well as the electrochemical impedance method (Electrochemical impedance，EIS). The successful preparation of Ti 3 C 2 -CS-MWCNTs-COOH, and the good electrochemical performance of the electrode were verified. Linear scanning voltammetry (Linear scan voltammetry，LSV) was used to quantify the ACV. The linear range of the method is wider than other works (0.05 ∼ 20.0 and 20.0 ∼ 500.0 μM), with a low detection limit (0.088 μM). The sensor achieves sensitive detection of ACV and can be used for the analysis of ACV in pharmaceutical and urine dosage forms , with recoveries of 95.5∼97.6% and 95.6∼97.5%, respectively. For the first time, this sensor utilizes clay-like Ti 3 C 2 with a larger specific surface area in combination with MWCNTs-COOH for ACV detection, which exhibits excellent immunity to interference, repeatability, reproducibility, and stability. This method provides a rapid and sensitive method for the determination of ACV, and lays foundations for developing miniaturized field rapid test detectors.
研究领域:
药理学
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分析化学
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
·
IF 3.807
An-ran Zhang,Hui Zhong,Xiao-rong Li,Zhuan-li Bao,Zhi-peng Cheng,Yu-jie Zhang,Ping Chen,Zai-chao Zhang,Li-li Zhang,Hai-yan Qian
An electrochemiluminescence (ECL) sensor was developed with carboxylated graphene-loaded Au@Ag core-shell nanoparticles . Scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscope (TEM) and inductive coupling plasma (ICP) were applied to characterizing COOH-G/Au@Ag nanocomposites . Electrochemical performance of the nanocomposites was evaluated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Based on ECL experimental results, we can find COOH-G/@Au@Ag nanocomposites have good electrocatalytic ability for glucose, so we construct a glucose electrochemiluminescence (ECL) sensor. When the glucose concentration range is from 0.005 to 1500 μM, the linear response of ECL intensity to glucose concentration was valid with detection limit of 0.02 μM. In addition, the developed sensor not only has good stability, repeatability and sensitivity for the detection of glucose, but also can be successfully used for glucose monitoring in human serum samples.
研究领域:
材料科学
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分析化学
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生物医学工程
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
·
IF 4.65
Yuanyuan Li,Jiawen Zhang,Cuifang Zhou,Min Ling,Jianguo Lu,Yang Hou,Qinghua Zhang,Qinggang He,Xiaoli Zhan,Fengqiu Chen
The shuttle effects of polysulfides and abominable safety problems restrict the practical application of lithium-sulfur batteries. Herein, we report a polyimide-based Janus separator by a simple filtration method introducing MoO 3 nanoparticles and MWCNTs-COOH. Using this separator, the lithium-sulfur battery delivers a reversible capacity of 1274 mA h g −1 at 0.2 C and a capacity 637 mA h g −1 at 5 C. Moreover, the separator is flame-retardant and thermal-stable without obvious shrinkage even at 300 °C. Experimental observations reveal that uniformly dispersed MoO 3 nanoparticles and MWCNTs-COOH as a pore structure regulator can obviously decrease the pore diameter and porosity of electrospun polyimide (PI) skeleton for intercepting polysulfides. The synergistic effect between MWCNTs-COOH, MoO 3 and polyimide fibers enables the faster kinetics and more efficient conversion of polysulfides.
研究领域:
材料科学
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电化学
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能源存储技术
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
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IF 8.025
Xin Sun,Chunyan Yang,Wei Liu,Ke Lu,Hao Yin
Graphene oxide (GO) is a biocompatible nanomaterial that has an inhibitory effect on insulin amyloid fibrillation. In order to enhance the inhibitory effect of GO and explore the rules of electrostatic interactions on the inhibitory effect, carboxyl group, PEI and PEG were coupled to the GO nanoplatelet surface to prepare inhibitors of different surface electrical properties. The effects of surface electrical properties of inhibitors on insulin fibrillation were investigated. The results showed that GO, carboxyl group modified GO (GO-COOH), PEI modified GO (GO-PEI), and PEG modified GO (GO-PEG) inhibited insulin fibrillation in a dose-dependent manner. Compared with GO, positive charge-modified GO-PEI and negative charge-modified GO-COOH enhanced the inhibitory effect, while uncharged polymer-modified GO-PEG weakened the inhibitory effect. The inhibitory effect of the inhibitors increased with the increase of surface charge density. The difference in inhibitory effect between GO-PEI and GO-COOH was due to the different electrostatic interactions between inhibitors and insulin, and the different inhibition mechanisms. In addition, inhibitors mainly interact with insulin during the nucleation phase to hinder insulin fibrillation. The charge modifications of graphene oxide enhanced the inhibitory effect on insulin fibrillation based on electrostatic interactions, which will provide new thoughts for the development of anti-amyloid fibrillation drugs.
研究领域:
纳米技术
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生物物理学
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材料科学
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药学
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Kexin Chen,Yan Zhang,Zhibin Jin,Yinchun Hu,Qi Lei,Yongcun Li,Qiong Zhou,Yingying Wang
Aramid fiber (AF)-reinforced composites face significant limitations in applications such as deep-sea equipment and aerospace due to their poor interfacial compatibility and low bonding strength. This study presents an innovative and scalable strategy for constructing a nano-hierarchical reinforcement interface on AF to fundamentally address this issue. A multifunctional interlayer was first constructed using polyethyleneimine (PEI) and polydopamine (PDA), on which both carboxylated and aminated carbon nanotubes (COOH-CNTs and NH 2 -CNTs) were co-anchored to produce the final product, denoted as C/N-CNTs-PP-AF. The distinctive dual-CNT configuration produced a stable electrical resistance in the range of 51.57–84.20 MΩ by forming a continuous conductive network. More importantly, C/N-CNTs-PP-AF/unsaturated polyester (UP) composites exhibited significant enhancement in properties, which corresponded to an interfacial strength of 39.60 MPa (an 81.15% increase) and tensile strength of 1404.25 MPa (an 89.45% improvement). The approach leverages multifaceted interfacial interactions to enable stable CNT grafting and enhanced adhesion. This work not only effectively addresses weak bonding at the AF/UP interface but also establishes a new paradigm for the design of high-performance fiber-reinforced composites with integrated functionalities.
研究领域:
材料科学
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复合材料
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表面工程
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纳米技术
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聚合物基复合材料
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高影响因子
JOURNAL OF POLYMER RESEARCH
·
2026
·Vol. 33
·期 4
·140
·
IF 3.5
Wang Ziyu,Wu Ranran,He Yanyang,Hu Yufang,Wang Sui,Mao Jie
Addressing the critical challenge of balancing mechanical robustness and electrical conductivity in hydrogels for wearable sensors, this study proposes a synergistic processing strategy that integrates freeze-thaw cycling, thermal annealing, and the Hofmeister effect-induced salting. A ternary composite hydrogel was prepared with polyvinyl alcohol (PVA) as the matrix, polyethyleneimine (PEI) to enhance crosslinking and biocompatibility, and carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) to improve conductivity. The optimized freeze-thawing-annealing (100 °C, 20 min) and salting-out (1.5 M NaCl) process resulted in a densely cross-linked network featuring significantly enhanced crystallinity and a homogeneous, pore-free microstructure. This hierarchical structure confers upon the hydrogel outstanding mechanical properties: tensile strength of 4.15 MPa, toughness of 17.73 MJ/m 3 , elastic modulus of 2.84 MPa, and a high fatigue threshold of 117.4 J/m 2 . Simultaneously, the electrical conductivity of the hydrogel reached 0.449 S/m. The hydrogel demonstrated excellent strain/pressure sensing capabilities, featuring tunable gauge factors (GF = 0.87–2.12 within the 0-100% strain range) and pressure sensitivity (0.145 kPa -1 below 2 kPa). The practical applicability of the hydrogel was verified by reliably monitoring various human motions in real-time. This research offers a scalable and effective material design strategy for next-generation flexible electronics.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xinyu Huang,Junhong Li,Huan Zhang,Xuemin Duan,Lihua Yao,Ruirui Yue,Jingkun Xu
As a natural flavonoid glycoside, rutin has been made into many medical products due to its unique pharmacological activity. However, excessive intake of rutin is harmful to health. Therefore, developing a new sensing technique to achieve highly sensitive, rapid and on-site detection of rutin is of great significance to ensure food and medicine safety. Herein, an electrochemical sensing platform was proposed based on the nanocomposite of functionalized multi-wall carbon nanotubes/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/Ru nanoparticles (MWCNT-COOH/PEDOT:PSS/Ru) for rutin detection. The characterization techniques reveal that MWCNT-COOH and PEDOT:PSS crossed together forming a 3D interconnecting structure with plenty of areolations and high specific surface area, and Ru nanoparticles uniformly dispersed on the surface of MWCNT-COOH/PEDOT:PSS. Moreover, due to the good film reforming property of PEDOT:PSS, the as-obtained MWCNT-COOH/PEDOT:PSS/Ru composite shows special surface appearance as flexible free-standing film, which can be freely cut and used as sensing platform directly. Electrochemical experiments confirmed that MWCNT-COOH/PEDOT:PSS/Ru composite film performed satisfactory sensing properties toward rutin detection with wide linear ranges of 0.01 ∼ 0.7 μM and 0.7 ∼ 50 μM, low detection limit of 6.1 nM and high sensitivity of 79.43 μA μM −1 cm −2 . Besides, the composite sensing platform also exhibits high selectivity, reproducibility, and stability. During actual sample testing, the sensing platform was successfully applied for rutin detection in rutin pharmaceutical tablets and black buckwheat tea, showing promising application prospects in rapid, convenient, and high-efficiency on-site test.
研究领域:
材料科学
·
分析化学
·
生物医学工程
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DOI
高影响因子
INTEGRATED FERROELECTRICS
·
2020
·
IF 0.557
Jianming Liu,Yao Feng,Juanjuan Yin,Tifeng Jiao
In this work, a new composite nanomaterial prepared by hydrothermal synthesis, it not only offers a convenient and stable method, but beneficial for the stable of nanomaterials. The obtained composite was explored use CNT-COOH and CuCl2, after deal with ultrasound and magnetic stirring then transferred to Teflon-lined stainless-steel autoclave for reaction. CNT-COOH not only increases the mechanical strength of the composite, but also provides a growth site of Cu nanocrystalline. The final production has a shorter reaction time for reducing 4-nitrophenol with NaBH4 than other products and has a high utilization rate. Studies have shown that the preparation of excellent nanocomposite has the potential for catalytic degradation.
研究领域:
材料科学
·
环境科学
·
化学工程
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DOI
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Qingbin Qi,Yu Wang,Wei Wang,Dan Yu
Many new laboratory-scale photothermal conversion materials have been developed for purification or desalination but developing easy-to-manufacture, low-cost and scalable materials with high efficiency of solar energy to thermal energy still faces great challenges. Herein, we provided a simple and effective method for self-assembly of dopamine-modified boron nitride (BN-PDA) and carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) layers on cotton fabric (CF), and assembled a solar steam generator by using the as-prepared composite cotton fabric as photothermal layer, cotton yarns (CYs) as water supply channel, and thermally insulated polystyrene (PS) foam as a supporting material. This solar steam generator exhibited a superior evaporation rate of 1.55 kg m −2 h −1 and an excellent photothermal conversion efficiency of ∼83.66% under 1.0 sun irradiance (1.0 kW m −2 ), with optical absorption up to 93.50% in the wavelength of 300–2500 nm. Meanwhile, excellent quality of freshwater from seawater and dyeing wastewater was also demonstrated. Different from other solar steam generator systems, this assembled fabric is cost-effective and readily available, suitable for large-scale industrial applications. Notably, the results show that multi-layer structure imparts it with outstanding mechanical flexibility and robustness, making it a potential candidate for fresh water supply in remote, off-grid or water-contaminated areas.
研究领域:
材料科学
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环境科学
·
能源工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）