PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Ao Cui,Jiale Yao,Jiang Xu,Rui Wang,Longyun Hao
In this research, PEDOT: PSS/Ag composite was successfully prepared by in-situ oxidation method, and the preparation conditions were optimized by adjusting the amount of APS and PSS . By utilizing FT-IR, XPS, TEM and ζ potential tests, the structure of PEDOT: PSS/Ag composite was characterized. Subsequently, the composite was coated on cotton fabric substrates through ink-jet printing to fabricate conductive coatings. To enhance the adhesion durability of conductive coatings, different dopamine (DA) solutions were further sprayed onto the surface of conductive coatings, and UV irradiation was used to initiate DA polymerization into polydopamine (PDA). For demonstrating the binding performance of PDA, The effects of solution pH, DA concentration and UV irradiation time on the coating durability to wash, friction and light exposure were measured and compared. The results indicated that the good polymerization of PDA on cotton fabric could significantly enhance the durability of conductive coatings to various external stimuli.
研究领域:
材料科学
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纺织工程
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表面化学
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产品关联
DOI
高影响因子
Environmental Science-Nano
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2019
·Vol. 6
·期 11
·3431-3441
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IF 7.704
Bowen Xiao,Yinqing Zhang,Xiaolei Wang,Meng Chen,Binbin Sun,Tong Zhang,Lingyan Zhu
The wide production and utilization of nanoparticulate Ag and Ti inevitably result in their release into the environment. Thus far, limited information is available regarding to what extent the nanoparticulate Ag and Ti could accumulate in biota and magnify along the food chain in real natural aquatic environments. With the application of single particle inductively coupled plasma mass spectroscopy, we quantitatively demonstrated that both nanoparticulate Ag (18.8–41.0 nm) and Ti (46.6–116 nm) occurred in the water, sediment and aquatic organisms in Taihu Lake, China. Nanoparticulate Ag exhibited greater bioaccumulation potential compared to its other chemical counterparts, and also a greater bioaccumulation factor than nanoparticulate Ti. Sediment served as a main reservoir for nanoparticulate Ag and Ti, and acted as one important exposure source for invertebrates. According to the concentrations of nanoparticulate Ag and Ti in aquatic organisms at different trophic levels, including a variety of invertebrates and fish species, the total and nanoparticulate Ti appeared to be biodiluted in the food web with trophic magnification factors (TMFs) < 1. Conversely, biomagnification of nanoparticulate Ag was found in the fish food web with a TMF of 1.21, while the total Ag was biodiluted. These findings serve as the first line of evidence on the transfer behaviors of nanoparticulate Ag and Ti along the natural aquatic food chain and underline the distinctive bioaccumulation and biomagnification behaviors of nanoparticles as opposed to their other chemical counterparts.
研究领域:
环境科学
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生态学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Xishun Peng,Yiheng Yuan,Anjiang Lu,Cunwei Wang,Caizhen Zu,Haili Zhang,Zhongchen Bai
Glyphosate (Gly) residues in agricultural products have a serious health risk, so it is urgent to seek a sensitive and convenient method for recognizing Gly residues in food. In this study, we proposed an electrochemical surface-enhanced Raman spectroscopy (EC-SERS) sensor of polyaniline/reduced graphene oxide/Ag/Cu (PANI/RGO/Ag/Cu) film to detect Gly residues. The EC-SERS sensor of PANI/RGO/Ag/Cu film had a large specific surface area, which could increase the binding sites of cu 2+ /Gly clathrates for boosting specifically its SERS signal. Moreover, Ag/Cu nanoparticles on the surface of film could effectively increase the differential pulse voltammetry signal and SERS signal of Gly molecules. The limit of detection of EC-SERS sensor to Gly could reach 1.9 nM. In addition, the EC-SERS sensor we prepared could also sensitively identify Gly residues on fresh fruit peels. The PANI/RGO/Ag/Cu film we proposed in this paper has great potential for selective and accuracy detecting Gly residues in agricultural products.
研究领域:
食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Carbon Letters
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2024
·
IF 5.5
Liu Rui,Zhang Xin,Tan Chong
Environmental-friendly photocatalytic technology is attracting considerable attentions in the filed of antibiotic degradation. In this work, an innovative Ag/ZnO/Bi 2 WO 6 catalyst was fabricated using sol–gel and ultrasonic methods for the degradation cefuroxime sodium in wastewater. The optimized Ag/ZnO/Bi 2 WO 6 photocatalyst demonstrated the a remarkable 77.0% photocatalytic efficiency within 180 min under simulated solar sunlight, with an apparent rate constant of 0.01085 min −1 . This efficiency is notably 6.02 and 1.41 times higher than that of pure ZnO and Ag/ZnO, respectively. The Ag/ZnO/Bi 2 WO 6 photocatalyst achieved a degradation efficiency of up to 72.3% in tap water and polluted river water, while achieving 65.7% degradation in pulping wastewater and pharmaceutical wastewater. Experiments involving reactive species scavenging and electron paramagnetic resonance implied that hydroxide radicals were the predominant active species responsible for the degradation. The enhanced catalytic mechanism and degradation pathway were elucidated, providing valuable insights into the construction and development of high-performance catalysts based on zinc oxide.
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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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Xingyue Wu,Yiping Qiu,Wenrong Cai,Junyao Li,Datong Wu,Laidi Xu,Yong Kong
Melamine foam (MF) supported NiCo 2 S 4 /Ag nanowires (AgNWs) were facilely prepared and used as the compressible electrode for the asymmetric supercapacitor (ASC). AgNWs and NiCo 2 S 4 were successively decorated on the surface of MF by a two-step impregnation approach, and the resultant NiCo 2 S 4 /AgNWs/MF exhibited a high deformation-tolerance and outstanding electrochemical behaviors due to the flexible skeleton of MF, high electrical conductivity of AgNWs and high specific capacitance of NiCo 2 S 4 . More importantly, the nanosized NiCo 2 S 4 could be effectively activated by charging/discharging as the NiCo 2 S 4 nanoparticles were gradually converted into NiOOH and CoOOH nanosheets during the repeated charging/discharging cycles, resulting in significantly high capacitance retention (155 % after 2000 charging/discharging cycles). Finally, an ASC was fabricated by using NiCo 2 S 4 /AgNWs/MF as the cathode and MF supported Ti 3 C 2 T x /AgNWs (Ti 3 C 2 T x /AgNWs/MF) as the anode, which showed a high energy density of 28.8 mWh cm −3 at the power density of 754 mW cm −3 .
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Na Li,Changhong Wang,Tingzhen Li,Brendan Latimer,Zhen Liu,Zhenghua Tang
Bimetallic nanoparticles with core-shell structure usually demonstrate enhanced catalytic performance due to the lattice strain created between the core and the shell region. The Au@Ag core-shell nanoparticles with different Au-to-Ag molar ratios were firstly fabricated by a facile method under mild conditions, and the n(Au): n(Ag) = 1: 2 sample showed the best electrocatalytic activity toward oxygen reduction reaction (ORR), a key reaction which plays an important role in fuel cells and metal-air batteries. Subsequently, the Au@Ag nanoparticles of n(Au): n(Ag) = 1: 2 were loaded on carbon nanotubes to prepare nanocomposite catalysts with different metal mass ratios of 20% Au@Ag/CNTs, 30% Au@Ag/CNTs, 40% Au@Ag/CNTs, and 50% Au@Ag/CNTs. The characteristics of the as-synthesized nanocomposites were examined by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) as well. The nanocomposites demonstrated effective electrocatalytic performance toward ORR. Electrochemical tests showed that the 30% Au@Ag/CNTs sample exhibited the highest activity among the series, in aspects of onset potential and kinetic current density. Furthermore, the sample of 30% Au@Ag/CNTs exhibited markedly higher long-term stability than Pt/C. The results clearly illustrate that the Au@Ag core-shell nanoparticles-based nanocomposites hold great potentials as efficient ORR catalysts for fuel cell applications.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2016
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IF 7.145
Guodong Zou,Zhiwei Zhang,Jianxin Guo,Baozhong Liu,Qingrui Zhang,Carlos Fernandez,Qiuming Peng
A new MXene/Ag composite was synthesized by direct reduction of a AgNO3 aqueous solution in the presence of MXene (Ti3C2(OH)0.8F1.2). The as-received MXene/Ag composite can be deemed as an excellent anode material for lithium-ion batteries, exhibiting an extraordinary long cycle lifetime with a large capacity at high charge–discharge rates. The results show that Ag self-reduction in MXene solution is related to the existence of low-valence Ti. Reversible capacities of 310 mAh·g–1 at 1 C (theoretical value being ∼320 mAh·g–1), 260 mAh·g–1 at 10 C, and 150 mAh·g–1 at 50 C were achieved. Remarkably, the composite withstands more than 5000 cycles without capacity decay at 1–50 C. The main reasons for the long cycle life with high capacity are relevant to the reduced interface resistance and the occurrence of Ti(II) to Ti(III) during the cycle process.
研究领域:
材料科学
·
电化学
·
能源存储
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2016
·
IF 0
Xiuzhen Lin,Hong Liu,Bing Guo,Xinhai Zhang
In this research, AgCl/Ag/AgCl core-shell microstructures have been synthesized at room temperature through a facile in situ method. The as-synthesized unique microstructures were characterized by SEM-EDS, XRD, XPS, UV–vis diffuse reflectance spectroscopy. And their photocatalytic activities were evaluated by degradation of methyl orange (MO) under UV, visible and sunlight irradiation. Comparing with the commercially available P25-TiO 2 and AgCl/Ag core-shell microstructures, our as-prepared samples gave the highest reactivity (almost 100% decomposition in 20 min) under direct sunlight irradiation. Their excellent photocatalytic activities are ascribed to the unique three-layered AgCl/Ag/AgCl core-shell microstructures, leading to improved electron-hole (e − -h + ) separation efficiency and promoting the inside charge carriers promptly transferred to the surfaces. In addition, their photocatalytic activity did not show any loss after four-time recycles, revealing high stability. In brief, the as-synthesized three-layered AgCl/Ag/AgCl core-shell microstructures exhibit their promising potential as efficient sunlight-driven photocatalysts for organic pollutants degradation.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
MODERN PHYSICS LETTERS B
·
2019
·
IF 0.929
Lu Jing,Weili Li,Yu Feng,Yulei Zhang,Jun He,Weidong Fei
Polymer-based composites with high dielectric constant and suppressed dielectric loss were successfully fabricated by using PZT@Ag core-shell structured particles as fillers and PVDF as polymer matrix. The PZT@Ag core-shell structured particles were synthesized via conventional solid-state method. The results indicate that the fillers dispersed in the polymer matrix prominently enhance the dielectric constant while keeping the dielectric loss unchanged simultaneously. Composites with high dielectric constant result from the high dielectric constant of PZT itself, the superior interfacial polarization of PZT@Ag core-shell structure and the conductivity of Ag according to percolation theory, while the dielectric loss is suppressed due to the tunneling current decreasing among Ag particles and Coulomb blockade effect.
研究领域:
材料科学
·
聚合物工程
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产品关联
DOI
高影响因子
TALANTA
·
2017
·
IF 4.162
Bing Zhang,Xue Wang,Yanling Zhao,Jia Lv,Hongyun Meng,Honghong Chang,Hui Zhang,Wenlong Wei
Visual detection of tumor markers with accuracy and selectivity exhibits significant advantages for cancer early diagnosis due to its low-cost and simple analytical instruments. Herein, a highly photosensitive colorimetric immunoassay for carcino embryonie antigen (CEA, as a model) detection based on Cu 2+ doped Ag-AgI nanocomposite was constructed. First, Cu 2+ doped Ag-AgI nanocomposite (Cu 2+ /Ag-AgI) owned the ability of oxidization of TMB was synthesized by impregnation method, which was characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS). Second, based on sandwich-type immunoassay, the immunocomplex was built on the surface of magnetic bead by utilizing Cu 2+ /Ag-AgI as labels. The blue color of TMB ox was obtained under visible irradiation and ultraviolet spectrum scanning was carried out in ABS buffer solution. Under optimal conditions, the absorbance values increased with the increasing of CEA concentrations in sample with the linearity range of 1.0 pg mL −1 −5.0 ng mL −1 . The detection limit was 0.13 pg mL −1 . More importantly, the developed colorimetric immunoassay exhibited good selectivity, repeatability, stability and possible applications in the real serum sample analysis.
研究领域:
生物医学工程
·
肿瘤学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Xin Wang,Xiaodan Zhang,Haiyan Cao,Yuming Huang
N-doped Ti 3 C 2 quantum dots (N-Ti 3 C 2 QDs) as the fluorescent nanoprobe were synthesized through inorganic base (i.e. KOH) stripping and solvothermal approach. The N-Ti 3 C 2 QDs displayed well-monodispersed near-spherical particles with average size of 2.3 nm, exhibited brightly blue emission and good stability, and possessed 14.46% of fluorescent quantum yield. Upon addition of Co 2+ or Ag + ions, the fluorescence (FL) of N-Ti 3 C 2 QDs could be quenched significantly. Mechanism investigation indicated that the inner filter and static extinguishing effects are responsible for the Co 2+ or Ag + ions induced FL quenching of the N-Ti 3 C 2 QDs. Based on above outcomes, we developed a simple N-Ti 3 C 2 QDs based fluorescent assay for the simultaneous determination of Co 2+ and Ag + ions, with a low detection limit of 0.21 and 0.10 μM, respectively. The assay was used to determine the content of Co 2+ and Ag + in real samples. This work will provide another way for the synthesis of fluorescent N-Ti 3 C 2 QDs and exploited their application in simultaneous detection of Co 2+ and Ag + .
研究领域:
材料科学
·
分析化学
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DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2016
·
IF 0.435
RUIZHUO OUYANG,WEIWEI LI,YANG YANG,WANGYAO ZHANG,KAI FENG,TIANYU ZONG,YARUI AN,SHUANG ZHOU,YUQING MIAO
We presented here three carbon-nanomaterials-based modified glassy carbon electrodes (GCE) with Ni–Ag nanohybrid nanoparticles (NPs) deposited upon, including single-wall carbon nanotubes (SWCNTs), multi-wall carbon nanotubes (MWCNTs) and the mesoporous carbons (MPCs), and compared their morphology effects on both Ni–Ag deposition quality and electrocatalytic performances toward Glu oxidation. After being deposited with Ni–Ag NPs, a homogenous surface with very small Ni–Ag NPs was obtained for Ni–Ag/SWCNTs/GCE, while heterogeneous, coarse surfaces with obvious embedment with large Ni–Ag particles were observed for both Ni–Ag/MWCNTs/GCE and Ni–Ag/MPC/GCE. All three modified electrodes were well characterized in terms of surface morphology, electron transfer rate, hydrophilicity, interference resistance, stability, electrocatalytic behaviors as well as practicability in real samples, based on which Ni–Ag/SWCNTs/GCE was always proved to be more advantageous over other two composite electrodes. Such advantage of Ni–Ag/SWCNTs/GCE was attributed to its desirable surface morphology good for Ni–Ag deposition and exposure of as many active sites as possible to Glu oxidation, leading to the extraordinary electrocatalytic performance.
研究领域:
电化学
·
材料科学
·
生物传感器
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DOI
高影响因子
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