IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
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2025
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IF 5.9
Zhenpeng Men,Ragini Singh,Bingyuan Zhang,Santosh Kumar
In this paper, we introduce a seven-core tapered optical fiber biosensor with high sensitivity for label-free detection of paraoxon compounds that utilizes the localized surface plasmon resonance (LSPR) effect. By its unique circle-M-circle (CMC) structure surrounding the fiber surface, it achieves an obvious amplification of evanescent field at the sensor and improves sensitivity greatly. Finally, the optimized tapered shape enhances surface plasmon light interaction and hence increases sensitivity to low concentrations of paraoxon residues. Since gold nanoparticles (AuNPs) are used as an active probe for surface modification, the optical properties of Au make them have a good LSPR effect. We also employ, as auxiliary materials, tungsten disulfide (WS2) thin layers and ZnO nanowires (NWs), of which the biocompatibility advantage can reinforce together with stability for detection probes to the WaveFlex sensor. The results of the experiment show a high sensitivity for detecting paraoxon residues in agricultural products: 33.8 ng/mL and a detection limit of 6.83 μg/mL. The developed biosensor enables portability through miniaturization and also maintains its performance stability in various environmental conditions, which can be considered a powerful tool for field monitoring of paraoxon to enhance both environmental and food safety assessments. The sensor has shown favorable practical applicability due to at least desirable selectivity and repeatability. The CMC-like optical fiber-based WaveFlex biosensor being developed based on LSPR detection represents a great progress of sensor-based technology for environmental monitoring with wide application scenarios, which serves as an efficient and effective surveillance mechanism for point-of-sampling detection to the timely-onset paraoxon analysis.
研究领域:
环境科学
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生物传感技术
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食品安全
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DOI
高影响因子
MATERIALS & DESIGN
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2025
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IF 7.9
Yanzhi Cai,Zixuan Yu,Laifei Cheng,Yibing Yuan,Xue Huang,Mingxing Chen,Yalong Chai,Shaoxiong Ren,Yuan Zhou
High sensitivity and structural stability are key challenges for sensors. This study introduces a one-step integral assembly method to create a carboxymethyl cellulose/sodium alginate/carbon black/carbon nanotubes/thermally-treated MXene five-component sponge-structured piezoresistive composite (CMC/SA/CB/CNT/T-MXene sponge, CSCCM T sponge). The multi-scale conductive fillers (zero-dimensional CB, one-dimensional CNT, and two-dimensional (2D) T-MXene) not only reinforce and toughene the sponge structure, greatly improving the structural stability, but also, as conductive fillers, increase the contact sites, significantly improving the sensitivity. Introducing CB transforms the pore wall of the porous composite from a relatively dense 2D structure into a three-dimensional (3D) porous structure. Thermal treatment of MXene not only enhances its conductivity but also makes it easier to exfoliate into nanosheets, resulting in a more uniform distribution of T-MXene within the pore walls. The 3D porous structure improves anti-fatigue stability and promotes contact site variation during deformation, boosting cyclic stability and sensitivity. The lightweight composite exhibits excellent conductivity, mechanical strength (146.7 kPa at 75 % strain), and sensing performance, with high sensitivity (GF = 39.8, S = 1,703 kPa −1 ), fatigue resistance (24,500 cycles), and fast response (100 ms). These properties enable real-time human motion monitoring and show promise for flexible wearable devices.
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DOI
高影响因子
Surfaces and Interfaces
·
2024
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IF 5.7
Hulin Gao,Jian Liu,Jiamei Hao,Xu Bai,Runpeng Liao
Flotation separation of chalcopyrite and talc is challenging due to their surface hydrophobicity, requiring a selective depressant for talc to achieve high-quality copper concentrate. This study is the first to use oxalic acid (OA) and carboxymethyl cellulose (CMC) as combined depressants for talc, and investigated the depression mechanism through flotation tests and various analysis techniques. Mixed minerals-flotation results showed that with 60+60 mg/L OA+CMC, talc was strongly depressed (10.16% recovery) with slight chalcopyrite (86.54% recovery) impact. The selective depression effect of OA+CMC was further verified through actual ore flotation experiments. Contact angle and zeta potential test indicated that OA+CMC significantly increased the hydrophobicity difference between talc and chalcopyrite surfaces. Adsorption capacity and atomic force microscope(AFM) results further confirmed that OA promotes CMC adsorption on talc surface, forming a dense CMC layer, whereas CMC adsorption on chalcopyrite was relatively low. Scanning electron microscope energy spectrum spectroscopy (SEM-EDS), fourier transform infrared spectroscopy(FTIR), and molecular dynamics (MD) results indicate that the synergistic depression mechanism of OA and CMC involves the formation of multiple adsorption layers at the solid-liquid interface, leading to an increased presence of hydrophilic groups on the talc surface, which results in its depression.
研究领域:
矿物加工
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材料科学
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表面化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Yue Sun,Yuanli Liu,Zimo Lou,Kunlun Yang,Dan Lv,Jiasheng Zhou,Shams Ali Baig,Xinhua Xu
Iron sulfide (FeS) nanoparticles with large specific surface area and abundant pore structure have been recognized as effective Hg(II) adsorbents. However, bare FeS nanoparticles can aggregate easily, which greatly limited their engineering applications. In this study, FeS nanoparticles were stabilized by biomaterials, including sodium carboxymethyl cellulose (CMC), gelatin and starch, and thoroughly investigated for the stabilization effects. Results demonstrated that the three biomaterial stabilized FeS nanoparticles namely CMC-FeS, gelatin-FeS and starch-FeS enhanced the adsorption efficiency significantly. The maximum adsorption capacities of CMC-FeS, gelatin-FeS and starch-FeS (mass ratio of stabilizer to FeS was 1:6) achieved ∼1726 mg/g, ∼1939 mg/g and ∼1989 mg/g respectively, which were over twice of the bare FeS. TEM images suggested that biomaterial-FeS nanoparticles were dispersed more uniformly than bare FeS. The removal processes of the three materials obeyed pseudo-second-order kinetic model ( R 2 ≥ 0.9986), implying that the rate-limiting step was the chemical sorption process. High removal efficiency of biomaterial-FeS nanoparticles was observed in the initial pH range of 6–11. The presence of Cl − could accelerate the reaction process, whereas the presence of humic acid (HA) could inhibit Hg(II) uptake. In addition, high concentration of coexisting cations (30 mM as Cd 2+ , Pb 2+ , Cu 2+ , and Ca 2+ ) had no significant effect on Hg(II) removal.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
MINERALS ENGINEERING
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2022
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IF 5.479
Changtao Wang,Runqing Liu,Qilin Zhai,Meirong Wu,Nianwen Jing,Feifei Xie,Wei Sun
The inevitable presence of metal ions in the slurry significantly impacts the adsorption of organic depressants. In this study, the influence of Fe 3+ and Ca 2+ on the depression of chalcopyrite by carboxymethyl cellulose (CMC) was investigated. CMC slightly depressed chalcopyrite flotation, and the addition of Ca 2+ hardly impact its depression effect. However, the pre-treatment with Fe 3+ enhanced its depression effect severely at acid conditions, while this hydrophilic strengthening effect gradually disappeared under alkaline conditions. CMC physically attached to blank chalcopyrite surface, the surface modification with FeCl 3 not only increased its adsorption capacity on chalcopyrite surface but also altered it from physical adsorption to chemical adsorption. Cu and Fe sites were not involved in CMC adsorption on blank chalcopyrite surface, and the strongly electrostatic repulsion hindered its adhesion under alkaline conditions. After surface modification with FeCl 3 , electrostatic repulsion was weakened, and Fe sites participated in the bonding with CMC molecule. Thus, chalcopyrite was strongly depressed. However, the contents of Fe 3+ , Fe(OH) 2+ and Fe(OH) 2 + on modified chalcopyrite were much less at strong alkaline conditions than acid conditions, which not favored CMC attachment.
研究领域:
矿物加工工程
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表面化学
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DOI
高影响因子
Horticulturae
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2023
·Vol. 9
·期 6
·715
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IF 3.1
Chenyu Niu,Lingling Liu,Amr Farouk,Cunkun Chen,Zhaojun Ban
Citrus fruits are susceptible to microbial infection during storage and transportation, leading to weight loss, quality deterioration and even physiological decay. In this study, a layer-by-layer (LbL) self-assembly edible coating based on chitosan and Sodium carboxymethyl cellulose (CMC) was prepared using electrostatic deposition. Postharvest citrus fruits (Citrus reticulatecv. ‘Chunxiang’) were coated either with the LbL coating, which exhibited an increased transmission rate of water vapor, or with single chitosan coating. The data of some physiological indexes of citrus coated with LbL coating and single coating were compared after being stored at 13 ± 2 °C and at relative humidity (RH) at 80–85% (shelf-life condition) for 10 days. Results demonstrated that the LbL deposited coating was effective at maintaining morphological and microstructural attributes, increasing the surface brightness, firmness and the content of titratable acid and ascorbic acid, as well as reducing the weight loss after storage by about 0.8%. Results in the present study indicated that the LbL edible coating could have the potential to maintain postharvest citrus quality during storage.Keywords:chitosan;CMC;FTIR;SEM;postharvest citrus;quality
研究领域:
食品科学
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植物病理学
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DOI
高影响因子
MOLECULES
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2018
·Vol. 23
·期 7
·1796
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IF 3.098
Xiao-Lan Yu,Yong He
The relative overcapacity in China's tea-leaf production and the potential application of tea-leaf saponins in soil remediation encouraged in-depth developments and comprehensive utilizations of tea-leaf resources. Through variables optimizations using Box–Behnken designs for ultrasonic power, temperature as well as ultrasonic treatment time in ultrasonic-assisted water extraction and single-variable experiments for acetone-extraction solution ratio in acetone precipitation, a rapid and simple method was developed for preparing tea-leaf saponins. Tea-leaf saponins with the concentration of 3.832 ± 0.055 mg/mL and the purity of 76.5% ± 1.13% were acquired under the optimal values of 78 w, 60 °C, 20 min and 0.1 ratio of acetone-extraction solution. Both Fourier transform-infrared (FT-IR) spectra and ultraviolet (UV) spectra revealed slight composition differences between tea-leaf saponins and tea-seed saponins, while these differences were not reflected in the critical micelle concentration (CMC) and the surface tension of tea-leaf saponins and tea-seed saponins, indicating there was no need to distinguish them at the CMC. Further research attention on where tea-leaf saponins were in low concentrations is deserved to discover whether they had differences in comparison with tea-seed saponins, which was beneficial to apply them in the phytoremediation of contaminated soils.
研究领域:
化学工程
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环境科学
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分析化学
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农业科学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
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IF 5.3
Qiang Zhang,Xu Li,Jinxiang Dong
Despite significant breakthroughs that have been made in the application performance of traditionally distributed Guerbet alcohol ethoxylates (GAEO), research on the characteristics of their narrow distribution products remains relatively limited. Herein, a series of hydrophilic and hydrophobic nonionic surfactants have been synthesized via the ethoxylation of 2-butyl-octanol with ethylene oxide. Ca(OAc) 2 was employed as a narrow distribution (NRD) catalyst, while KOH served as a broad distribution (BRD) catalyst. The synthesized products were characterized using Fourier-transform infrared (FT-IR), 1 H and 13 C nuclear magnetic resonance ( 1 H, 13 C NMR) spectroscopy. In addition, a comprehensive assessment of the physicochemical and surface properties of the NRD GAEO surfactants was conducted through systematic investigations. The results were then compared to conventionally distributed GAEO surfactants. The study has demonstrated that NRD GAEO surfactants exhibited lower critical micelle concentration (CMC) values, which have the higher efficiency of the surfactant application. In addition, the NRD products have superior wettability performance, reduced foaming capacity in foam properties, and improved rapid defoaming capacities. In regarding their other properties, they closely mirrored the performance of BRD products. These findings will contribute to a comprehensive understanding of the properties of NRD ethoxylates and have substantial practical implications in optimizing personal care and household cleaning products.
研究领域:
化学
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材料科学
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表面活性剂技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Bangfeng Fu,Ruilei Yang,Liang Zhang,Weijie Gong,Ximei Han,Bingzhi Li,Qianjin Liu,Jianlong Wang
With the escalating focus on sustainable food packaging, the concurrent demands for outstanding mechanical robustness and effective photodynamic antibacterial activity in materials designed for fruit preservation have yet to be adequately fulfilled. This study first engineered an innovative food packaging nanocomposite (CPBI) through strategic integration of BiOBr/I heterojunction within a polyvinyl alcohol/carboxymethyl cellulose (PVA/CMC) matrix, integrating photodynamic antibacterial functionality and ultra-high mechanical strength for perishable fruit preservation. The incorporation of BiOBr/I into the natural-polymer network achieved remarkable pathogen inactivation efficiencies of 97.4 % against Staphylococcus aureus and 93.8 % against Escherichia coli O157:H7 via ROS-mediated membrane peroxidation. Simultaneously, the CPBI film displayed superior mechanical properties (tensile strength: 240.1 MPa, fracture strain: 260 %). In practical storage, this film successfully extended the shelf life of cherry tomatoes to 20 days, demonstrating its highly effective fruit preservation capability. This strategy advances the evolution of intelligent packaging solutions, simultaneously addressing the tripartite challenges of material sustainability, postharvest preservation, and foodborne pathogen mitigation.
研究领域:
材料科学
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食品包装技术
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光催化
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抗菌材料
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可持续农业
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产品关联
DOI
PubMed
高影响因子
POLYMER
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2025
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IF 4.5
Zhaodi Yi,Zengbin Song,Mingrui Wu,Ming He
Thermochromic hydrogels have attracted considerable interest for their potential use in smart windows and information encryption. Nonetheless, it remains a challenge to achieve flexible and adjustable multilevel phase transitions through simple strategies. In this study, a thermoresponsive composite hydrogel with tunable upper critical solution temperature (UCST) and lower critical solution temperature (LCST) was developed by introducing sodium carboxymethyl cellulose (CMC) and hydroxypropyl cellulose (HPC) into a cross-linked polyacrylamide (PAM) network via a one-pot synthesis approach. CMC not only changed the phase transition temperature, but also greatly improved the mechanical properties, anti-freezing and dimensional stability of the hydrogel. The hydrogel smart window exhibited excellent sunlight modulation capabilities and effective infrared shielding effects (T lum ≈ 90.24 %,ΔT solar,25–2°C = 66.88 %,ΔT solar,25–40°C = 80.81 %), which could simultaneously meet the needs of indoor lighting and energy saving during the daytime, as well as the need for privacy at night. Furthermore, multiple encryption of QR code information and temperature monitoring were realized by combining the hydrogels with different phase transition temperatures. This strategy provides an innovative route to fabricate thermochromic cellulose hydrogels and expands their application in the field of smart materials.
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高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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2025
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IF 3.1
Liju Yu,Jie Gao,Tingting Deng,Chang Gao,Jiaxing Wang,Nan Wang
Heart failure is a global epidemic characterized by high mortality and morbidity rates. β1-Adrenoceptors (ADRβ1) antagonists are the main drugs used in the treatment of HF. A simple and convenient method for screening ADRβ1 antagonists is necessary. Nebivolol has four chiral centers, and its byproducts, which are not easy to avoid, may interact with ADRβ1. Cell membrane chromatography based on SNAP-tag technology provides a comprehensive solution. In this study, an ADRβ1 target cell membrane chromatography model based on SNAP-tag technology was established, and the selectivity, specificity, repeatability, and column life of the system were validated. Under optimized conditions, this model was used to screen for active components targeting ADRβ1 in nebivolol and its byproducts. The bioactivity of nebivolol and its byproducts was detected by calcium influx. The results showed that the ADRβ1 SNAP-tag/CMC model was successfully established and could be used to screen active drugs targeting ADRβ1. Among nebivolol and its byproducts, D-nebivolol (SRRR-enantiomer) had the best affinity for ADRβ1. Three byproducts of nebivolol also exhibited retention characteristics on ADRβ1. In vitro calcium influx experiments verified the interaction of these components with ADRβ1, showing good inhibitory effects on ADRβ1. In conclusion, the ADRβ1 SNAP-tag/CMC model developed in this study can be used for the comprehensive screening of active components targeting ADRβ1 in complex samples.
研究领域:
药理学
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药物筛选
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分子生物学
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DOI
PubMed
高影响因子
ACS Applied Bio Materials
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2024
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IF 4.6
Jihao Zuo,Ruopeng Lan,Ningning Lv,Yitong Lin,Li Hao,Xinhua Zhou,Hongjun Zhou
Pathogens and pests pose significant threats to global crop productivity and plant immunity, necessitating urgent measures from researchers to prevent pathogen contamination and pest damage to crops. A natural plant-based antibacterial agent, eugenol (EUG), has demonstrated excellent antimicrobial and insect repellent capabilities, but the characteristics of volatilization and poor dissolution limit the practical application. The nanoization of pesticide formulations holds promise in the development of highly effective pesticides for antibacterial and insecticidal purposes. Herein, a eugenol-loaded nano delivery system (EUG@CMC-PGMA-CS) was synthesized using glycidyl methacrylate (GMA) as a functional monomer to connect carrier core structure carboxymethyl cellulose (CMC) with shell structure chitosan (CS), and EUG was encapsulated within the carrier. EUG@CMC-PGMA-CS demonstrated excellent leaf affinity, with minimum contact angles (CAs) of 37.83 and 70.52° on hydrophilic and hydrophobic vegetable leaf surfaces, respectively. Moreover, the maximum liquid holding capacity (LHC) of EUG@CMC-PGMA-CS on both hydrophilic and hydrophobic vegetable leaf surfaces demonstrates a noteworthy 55.24% enhancement compared to the LHC of pure EUG. The in vitro release curve of EUG@CMC-PGMA-CS exhibited an initial burst followed by stable sustained release. It is with satisfaction that the nano delivery system demonstrated exceptional antibacterial properties against S. aureus and satisfactory insecticidal efficacy against Spodoptera litura. The development of this eugenol-loaded nano delivery system holds significant potential for enhanced antibacterial and insect repellents in agriculture, paving the way for the application of volatile bioactive substances.
研究领域:
农业科学
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纳米技术
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植物病理学
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害虫管理
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）