NANOTECHNOLOGY
·
2019
·Vol. 31
·期 11
·115501
·
IF 3.399
Chenhuinan Wei,ChenXia Kang,Qiming Liu
Cu nanowire (Cu NW) and Ag nanosheet (Ag NS) bimetallic nanocomposites were fabricated on a flexible polyethylene terephthalate (PET) slice for non-enzymatic glucose sensing via a facile two-step approach, vacuum filtration, and galvanic displacement. Low-cost Cu NW-based conductive films were employed as the conductive substrates to substitute the traditional glassy carbon electrodes or indium tin oxide electrodes. The highly stable Ag NSs grow directly on the surface of Cu NWs without additional binders. The AgNO3 concentration and displacement time were adjusted to control the consumption of Cu NWs and the growth of Ag nanostructures. With the large load of Ag and the great connection of Cu NWs, a high sensitivity of 2033 μA mM−1cm−2, a fast amperometric response of 2 s, a wide linear range of 0.0015–4.02 mM, and a satisfactory result in human serum analysis were obtained by this novel Ag NS/Cu NW/PET sensor. Especially the sensitivity of the sensor was over four-fold higher than that of pure Cu NWs/PET, benefiting from the synergistic effect of bimetals. Furthermore, the Ag NS/Cu NW/PET sensor demonstrated a stable amperometric signal against mechanical bending. The material holds promise to use to fabricate flexible electrochemical devices.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2019
·
IF 2.291
Kai-Sheng Yao,Hai-Li Zhao,Nan Wang,Tian-Jin Li,Shuang Zhao,Wei-Wei Lu
The ultra-large, single-crystal Ag nanosheets and their assembled films can be easily one-pot prepared at room temperature via a chloroform-water interfacial reaction route with o -ethoxyaniline (OEA) in chloroform as reductant and AgNO 3 in water as precursor. The as-obtained single-crystal Ag nanosheets can reach as large as 16 μm in side length and as thin as 22 nm in thickness. The results show that reagent concentrations, temperature and organic phase in current liquid-liquid reaction have significant influences on the formation of Ag sheet-like nanostructures . The possible mechanism was proposed for the growth and formation of Ag nanosheets and their assembled films. Furthermore, using p -aminothiophenol (PATP) as a model molecular probe , the Ag nanosheet-assembled films exhibit outstanding surface-enhanced Raman scattering (SERS) response and high reproducibility.
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2020
·
IF 5.604
Chaohu Xiao,Weidong Liang,Qi-Meige Hasi,Lihua Chen,Jingxian He,Fang Liu,Chengjun Wang,Hanxue Sun,Zhaoqi Zhu,An Li
Solar steam generation is one of the most promising technologies to utilize solar energy, which is applied to extract fresh water from seawater or contaminated water. However, solar vapour generation is usually restricted to the underutilization of solar energy or depends on complicated light-harvesting adjuncts. Here, a novel hierarchically double-layered evaporation device was demonstrated based on poly(ionic liquid)s hydrogel with the upper surface co-modified by polypyrrole (PPy) and silver particles (named as Ag/PPy-PMBA-BrILs). The evaporation system exhibits a cooperative interaction of the double-layer with efficient light-absorbing and water transportation, leading to a high evaporation rate of 1.37 kg m −2 h −1 with a photothermal conversion efficiency of 88.7% under 1 sun illumination. The high evaporation rate is mainly due to the synergistic light absorption of polypyrrole and silver particles as well as the excellent water transfer capability of poly(ionic liquid)s hydrogel. Moreover, the hydrogel-based evaporation device also exhibits excellent salt-resistant performance for solar desilination in artificial sea water. The high-efficiency poly(ionic liquid)s hydrogel based solar steam generator with co-modified light-absorbing surface may open new opportunities for the future design and fabrication of high-performanced solar steam generator for practical applications.
✓ 已验证
DOI
高影响因子
ACS Omega
·
2025
·
IF 4.3
Ramarajan Ramanathan,Ashish Kumar,Himamaheswara Rao,Raj Kumar Samudrala
Researchers are actively investigating cost-effective, indium-free n-type transparent conducting oxides (TCOs) for optoelectronic applications. Silver-doped SnO2 (ASO) thin films, fabricated via spray deposition, serve as promising alternative electrodes for dye-sensitized solar cells (DSSCs), where Ag doping optimizes the electrical and optical properties. The structural, morphological, optical, and electrical transport properties of the as-deposited ASO thin films were analyzed using X-ray diffraction, field-emission scanning electron microscopy, X-ray photoelectron spectroscopy, UV–vis spectroscopy, and Hall effect measurements to assess phase composition, surface morphology, elemental states, optical behavior, and charge transport characteristics. At 0.4 wt % Ag (ASO4), the film exhibits 88.7% transmittance in the visible range, a wide bandgap of 3.73 eV, and low resistivity (4.26 × 10–4 Ω cm) with a sheet resistance of 18.6 Ω/□, making it a superior TCO candidate. To understand charge transport mechanisms, Arrhenius analysis was used to determine activation energies, while a four-probe method revealed resistance stability up to 400 °C. The power conversion efficiency (PCE) of the DSSC device was effectively optimized using ASO electrodes, where varying Ag concentrations played a crucial role in enhancing efficiency. Notably, the ASO4 film demonstrated a remarkable PCE of 4.69%. Integrating ASO electrodes into DSSCs yielded enhanced PCE, reinforcing their viability as a cost-effective replacement for ITO/FTO electrodes in the next-generation solar technology.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Chenghao Lin,Qianyi Li,Gengliang Liu,Zixuan Xi,Xiaoxia Yan,Shijun Li,Liang He,Pengli Bai
Alzheimer’s Disease (AD), a most common neurodegenerative disease, has aroused people's great attention. Amyloid-β 1-42 (Aβ42) from serum/plasma has been listed as Core 1 biomarker in diagnostic guide and explore an ultrasensitive detection method of Aβ42 is of great significance for early AD diagnosis and treatment. Herein, an ultrasensitive fluorescent biosensor for Aβ42 detection is designed, which is composed of Fe 3 O 4 @MoS 2 microsphere and Au-Ag alloy. Compared with typical single gold nanoparticles in traditional fluorescent biosensor, alloy nanoparticles can generate a stronger electromagnetic field to enhance the fluorescence of quantum dots via surface plasmon resonance, achieve the effect of signal amplification. Importantly, our design significantly improved the limit of detection to 11 ag/mL, with a linear response ranging from 0.1 to 10 4 fg/mL. Moreover, by replacing the detection antibody in the biosensor, it can also be applied to other common AD biomarkers, such as Aβ40 (linear range: 0.1 to 10 5 fg/mL, LOD: 61 ag/mL) and total Tau protein (linear range: 0.1 to 10 5 fg/mL, LOD: 40 ag/mL). The biosensor exhibited excellent performance in both spiked and real serum samples. This fluorescent biosensor based on Au-Ag alloy strategy with ultra-sensitivity and good selectivity, provides a reliable solution for AD’s early diagnosis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Shengyao Zhou,Ming Zheng,Meiyue Cheng
The electrocatalytic CO 2 reduction reaction (CO 2 RR) using renewable electricity emerges as a promising route for carbon neutralization, which has attracted numerous attentions in recent years. Regulating the micro-environment surrounding the reaction interface is of great importance for selective CO 2 electroreduction but remains challenging. This study employed the potassium chloride (KCl) electrolyte to regulate the micro-environment surrounding the silver nanowires (AgNWs) catalyst for efficient electrocatalytic CO 2 -to-CO conversion. Rather than focusing on the effect of individual anions or cations in CO 2 RR, as previously reviewed elsewhere, we herein elucidated the effect of both Cl − and K + on the micro-environment surrounding the active centers. Experimental results and DFT calculations revealed that K + could facilitate the CO 2 adsorption and activation, while Cl − could promote *COOH formation and suppress HER. Findings from this study may provide new insights into the micro-environment engineering for efficient CO 2 RR.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·Vol. 172
·期 8
·082501
·
IF 3.3
L. P. Zheng,F. F. Huang,J. Ren,M. L. Huang
A ternary additive system (morin, cinnamaldehyde, and cuminaldehyde) was developed to fabricate Sn-Ag bumps with high flatness (<5%) and coplanarity (<5%) under high-current-density electrodeposition (8 ASD). Cyclic voltammetry revealed distinct potential-dependent adsorption behavior: morin preferentially adsorbed at relative positive potentials (−0.44 to −0.60 V), inducing −160 mV shift in onset electrodeposition potential (−0.60 V) compared to that without additives (−0.44 V), which enhanced nucleation site density and promoted grain refinement. In contrast, cinnamaldehyde and cuminaldehyde adsorbed predominantly at more negative potentials (−0.50 to −0.80 V and −0.55 to −0.80 V, respectively). This enabled their adsorption at the edge and tip of bumps, thereby achieving leveling effects by selectively suppressing deposition at protrusions. Convective diffusion amplified the cinnamaldehyde adsorption at the edge and tip while suppressing cuminaldehyde adsorption. Chronopotentiometric analyses further elucidated the synergistic regulation mechanism. At 8 ASD, the adsorption of morin shifted the electrodeposition potential negatively, enabling subsequent adsorption of cinnamaldehyde and cuminaldehyde. Consequently, electrodeposition at relative negative potentials and rapid diffusion regions was suppressed, yielding fine-grained structures alongside superior flatness and coplanarity.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Chao Luo,Tianpei Yi,Bin Du,Zhijie Yuan,Fusheng Pan,Zhongyi Jiang
Aromatic and alkane separation plays a vital role in naphtha steam cracking due to the low cracking reactivity of aromatic. Aromatic-friendly hybrid membrane-based pervaporation is recognized as an efficient separation technology attributed to its economy, simplicity, and eco-friendly. Thus, TpPa-SO 3 Ag, a two-dimension COF filler with great compatibility for Pebax, was designed with uniform anchoring of Ag + in pore, which was incorporated into Pebax to construct facilitated transport channel into Pebax-TpPa-SO 3 Ag membrane. By regulating TpPa-SO 3 Ag content, the optimal Pebax-TpPa-SO 3 Ag membrane (1.0 wt%) showed best pervaporation performance with permeation flux of 2.05 kg m −2 h −1 and separation factor of 6.26 over 168 h. Relying on the optimal formulation of flat sheet membrane, hollow fiber hybrid membrane was developed, whose permeation flux (0.43 kg m −2 h −1 ) and separation factor (7.25) was fully maintained during the 168 h continuous pervaporation process for toluene/ n -heptane mixture, opening an avenue for hollow fiber COF hybrid membrane-based pervaporation in the production of high-value petrochemical derivatives.
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2012
·
IF 2.098
Ting-Ting Gan,Yu-Jun Zhang,Nan-Jing Zhao,Xue Xiao,Gao-Fang Yin,Shao-Hui Yu,Huan-Bo Wang,Jing-Bo Duan,Chao-Yi Shi,Wen-Qing Liu
Mercaptopropionic acid (MPA) capped CdTe quantum dots (QDs) with particle size 3 nm have been successfully synthesized in aqueous medium by hydrothermal synthesis method. And the effects of different metal ions on MPA capped CdTe QDs fluorescence were studied using fluorescence spectrometry. The results demonstrated that at the same concentration level, Ag + could strongly quench CdTe QDs fluorescence, and the other metal ions had little effect on CdTe QDs fluorescence except Cu 2+ . On the basis of this fact, a rapid, simple, highly sensitive and selective method based on fluorescence quenching principle for Ag + detection in aqueous solution was proposed. Under optimal conditions, the quenched fluorescence intensity ( F 0 – F ) increased linearly with the concentration of Ag + ranging from 4 × 10 −7 to 32 × 10 −7 mol L −1 . The limit of detection for Ag + was 4.106 × 10 −8 mol L −1 . The obtained plot of F 0 / F versus [Ag + ] was an upward curvature, concave towards the y -axis, rather than a straight line. The modified form of the Stern–Volmer equation was third order in Ag + concentration. According to the modified Stern–Volmer equation, it can be inferred that dynamic quenching and static quenching simultaneously occurred when Ag + interacted with MPA capped CdTe QDs. At the same time other factors might also influence the quenching process. Based on this study, hydrothermal synthesized MPA capped CdTe QDs with particle size 3 nm may be used as a novel fluorescence probe to quantificationally and selectively detect Ag + .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 9
·096518
·
IF 4.386
Xiangyu Meng,Zhihuan Wang,Guoliang Yu,Xinbin Wang,Yingjie Chen,Liyan Yu,Lifeng Dong
Rational design of surface plasmon-enhanced electrocatalysts can effectively integrate solar energy into fuel cells. Herein, iron and nitrogen codoped carbon (Fe/NC) nanoparticles synthesized with microemulsion are used to absorb and photo-reduce Ag ions in solutions to form Ag nanoparticles on Fe/NC (Ag-Fe/NC). Different Ag-Fe/NC materials are prepared by adjusting the concentration of AgNO3 solution. Among them, Ag-Fe/NC obtained with 0.5 mg ml−1 AgNO3 solution shows the highest oxygen reduction reaction (ORR) catalytic performance and light-enhanced ORR characteristics, even better than commercial Pt/C. Besides, Ag-Fe/NC displays excellent long-term stability and high methanol resistance for ORR performances in alkaline medium. Therefore, this study will provide a new method for integrating light to recover Ag ions in solutions and improve electrocatalytic properties.
✓ 已验证
DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2024
·Vol. 18
·期 11
·1-11
·
IF 4.3
Fu Huiyu,Wu Jiewen,Liang Changhai,Chen Xiao
With the advantages of low raw material cost and 100% atom utilization, the synthesis of high value-added chemical product cyclic carbonates by the cycloaddition of CO 2 to epoxides has become one of the most prospective approaches to achieve the industrial utilization of CO 2 . In the reported catalytic systems, the complexity of the catalyst synthesis process, high cost, separation difficulties, and low CO 2 capture limit the catalytic efficiency and its large-scale application. In this paper, Ag nanoparticles loaded on polyethyleneimine (PEI)-modified UiO-66-NH 2 (Ag/PEI@UiO-66-NH 2 ) are successfully synthesized by in situ immersion reduction. The Ag nanoparticles and the amino groups on the surfaces of PEI@UiO-66-NH 2 contribute to the adsorption of CO 2 and polarization of C–O bonds in epoxides, thereby boosting the conversion capability for the CO 2 cycloaddition reaction. At the amount of propylene oxide of 0.25 mol and the catalyst dosage of 1% of the substrate, the yield and selectivity of propylene carbonate are up to 99%. In addition, the stability and recyclability of Ag/PEI@UiO-66-NH 2 catalyst are attained. The Ag/PEI@UiO-66-NH 2 catalyst also demonstrates a wide range of activity and distinctive selectivity toward cyclo-carbonates in the cycloaddition of CO 2 to epoxides. This work provides a guide to designing a highly efficient catalyst for in situ capture and high-value utilization of CO 2 in industrial applications.
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2018
·
IF 4.427
Songjian Zhao,Dongyao chen,Haomiao Xu,Jian mei,Zan Qu,Ping Liu,Yong Cui,Naiqiang Yan
The zirconium metal-organic framework material UiO-66 was doped with Ag nanoparticles and investigated for the removal of elemental mercury (Hg 0 ) in flue gas . Physical and chemical characterization of the adsorbents showed that adding Ag did not change the crystal structure and morphology of the UiO-66. Ag doping can improve the redox activity of UiO-66, and the adsorbent exhibited high thermal stability and surface area. Hg 0 removal experiments indicated that UiO-66 exhibited the higher performance compared with P25 and activated carbon, and the addition of Ag exhibited a significant synergistic effect with the UiO-66, which had highest Hg 0 adsorption capacity (3.7 mg/g) at 50 °C. Furthermore, the Hg 0 removal mechanism was investigated, revealing that Hg 0 is removed by the formation of an Ag amalgam and channel adsorption at low temperature, and through Ag-activated oxygen oxidation and channel capture at high temperature.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）