NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 42
·20146-20153
·
IF 3.925
Zhengxing Gong,Jing Luo,Xinrong Shao,Xu Sun,Huan Wang,Dan Wu,Dawei Fan,Yuyang Li,Qin Wei,Huangxian Ju
A novel quenching electrochemiluminescence (ECL) immunosensor for the trace detection of neuron-specific enolase (NSE) was developed. Doping CdS with Zn2+ to obtain ZnCdS not only significantly improves the original properties of CdS, but also can be loaded onto the surface of g-C3N4 to form a special complex structure, which effectively improves the ECL performance of g-C3N4. Rh0.6Ru0.4 alloys with flower-like structures were prepared by simple hydrothermal synthesis, with excellent electrical conductivity and catalytic performance. Due to its special flower-like structure with a large specific surface area, Ag nanoparticles can be uniformly loaded on its surface to form Rh0.6Ru0.4@Ag composites. Through spectral comparison, it was found that Rh0.6Ru0.4@Ag has strong UV-vis absorption in the ECL emission wavelength range of g-C3N4, which can generate resonance energy transfer, thereby effectively quenching the ECL signal. The immunosensor has a wide detection range with a detection limit of 16 fg mL−1 (S/N = 3), good stability and biocompatibility, and has great potential in clinical application.
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Laser & Photonics Reviews
·
2025
·
IF 10
Dengbang Zhao,Zhipeng Chen,Meng Wang,Mochen Jia,Jibin Zhang,Linyuan Lian,Yanbin Han,Xu Chen,Zhuangzhuang Ma,Ying Liu,Zhifeng Shi
Ion doping is an effective strategy to regulate the optical performance in metal halide perovskites for desirable light emission manipulations. In this work, a Mn 2+ and Ag + co-doping strategy is utilized to improve the luminescence in Cs 4 CdBi 2 Cl 12 quadruple perovskite. Mn 2+ and Ag + ions are proven to be incorporated into Cs 4 CdBi 2 Cl 12 lattice. Mn 2+ ions occupy Cd 2+ sites and Ag + ions occupy Cd 2+ sites or vacancies. The alloyed Mn 2+ ions bring efficient orange-red luminescence attributed to the energy transfer process from the host to Mn 2+ ions. A small amount of Ag + doping can optimize the band structure and increase the exciton binding energy, thus promoting efficient radiative recombination from d–d transition of Mn 2+ ions and boosting the PLQY up to 94.6%. Furthermore, Cs 4 Cd 0.75 Mn 0.25 Bi 2 Cl 12 :1.5%Ag + show good phase and emission stability in ambient environment and is employed in white light-emitting diodes with commercial blue and green phosphors on a near-ultraviolet LED chip. This work provides insights for understanding the composition-structure-property relationship in vacancy-ordered quadruple perovskites and designing highly efficient luminescent lead-free metal halides for solid-state light emitting applications.
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JOURNAL OF MATERIALS CHEMISTRY
·
2012
·Vol. 22
·期 45
·23981-23988
·
IF 5.968
Wan-Fu Ma,Lu-Lu Li,Ying Zhang,Qiao An,Li-Jun You,Ju-Mei Li,Yu-Ting Zhang,Shuai Xu,Meng Yu,Jia Guo,Hao-Jie Lu,Chang-Chun Wang
Selective enrichment of glycopeptides from complicated biological samples is essential for MS-based glycoproteomics, but still remains a great challenge. In this study, we report an unprecedented ligand-free strategy for the selective enrichment of glycopeptides by simply utilizing the multivalent interaction between glycopeptides and silver nanoparticles (Ag-NPs) coated magnetic nanoarchitectures. The composite microspheres were deliberately designed to be constructed with a high-magnetic-response magnetic colloid nanocrystal cluster (MCNC) core, a poly(methacrylic acid) (PMAA) interim layer and a Ag-NPs functional shell with high coverage. Taking advantage of the reversible interaction of glycans with Ag-NPs and the high magnetic susceptibility of the magnetite core, the MCNC@PMAA@Ag-NPs microspheres possess remarkable selectivity for glycopeptides even at a low molar ratio of glycopeptides/non-glycopeptides (1 : 100) with a very rapid enrichment speed (only 1 min needed) and a simple operation procedure using magnetic separation. Applying this approach, we identified 127 unique glycopeptides mapped to 51 different glycoproteins from only 1 μL rat serum samples. These results clearly demonstrated that the MCNC@PMAA@Ag-NPs have great potential for purifying and identifying the low-abundant glycopeptides in complex biological samples.
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MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Hengye Chen,Ou Hu,Haiyan Fu,Yao Fan,Lu Xu,Qingjun Meng,Lei Zhang,Wei Lan,Chunying Wu,Siyi Tang,Yuanbin She
A fluorescence paper-based sensor method by simply using thiomalic acid modified CdTe (TMA-capped CdTe) was proposed for visual detection of silver ions (Ag + ). Red-emission TMA-capped CdTe with a large amount of carboxyl groups on the surface could be combined with Ag + by electrostatic interaction, thus leading to the fluorescence quenching. It was found that the adding of amino acids contributed to fluorescence recovery by the leaving of Ag + on the surface of TMA-capped CdTe. Moreover, the more amino group, benzene and thiol group equipped in the structure of amino acid, the stronger fluorescence restoring of CdTe could be achieved. This fluorescence spectrometry method for Ag + showed low detection of limit with the value of 13.16 nmol/L, with no response to other heavy metals, which demonstrating its high sensitivity and high selectivity for Ag + . More importantly, this paper-based sensor method combined with chemometrics could accurately identify and quantify different concentrations of Ag + in different complex matrices. This fast, economical, accurate and effective approach exhibited a new idea for the on-site detection of Ag + , and was expected to be extended to the on-site detection of Ag + in biological and environmental fields.
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JOURNAL OF ELECTRONIC MATERIALS
·
2021
·Vol. 50
·期 11
·6353-6362
·
IF 1.938
Liu Yurong,Niu Shaoyu,Hu Rong
Ferric cobalt sulfide/silver nanowires/graphene (FeCo 2 S 4 /Ag NWs/G) ternary nanocomposites with hierarchical honeycomb-like morphology have been obtained through hydrothermal synthesis. In the FeCo 2 S 4 /Ag NWs/G composite electrode, the Ag NWs provide effective electron transport channels and prevent the graphene and FeCo 2 S 4 nanosheets from aggregating. The graphene sheets can not only provide connected channels for ion transportation and charge transfer but also significantly buffer the volume change of electrode. As a result, the as-prepared FeCo 2 S 4 /Ag NWs/G composite electrode exhibits a high specific capacitance of 2689.2 F/g at a current density of 1 A/g, and excellent capacitance retention of 96.1% after 5000 charge–discharge cycles. In addition, an asymmetric supercapacitor was fabricated using FeCo 2 S 4 /Ag NWs/G as positive electrode and flower-like hierarchical porous nitrogen-doped carbon sphere as negative electrode. The assembled supercapacitor delivered a high energy density of 80.6 Wh/kg at a power density of 806 W/kg. These results demonstrate that such FeCo 2 S 4 /Ag NWs/G nanocomposites have widespread application prospects in the field of electrochemical energy storage. Graphic Abstract
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Journal of Materials Chemistry C
·
2016
·Vol. 4
·期 26
·6371-6379
·
IF 5.066
Shuyuan Cui,Zhigao Dai,Qingyong Tian,Jun Liu,Xiangheng Xiao,Changzhong Jiang,Wei Wu,Vellaisamy A. L. Roy
Three-dimensional (3D) ZnO/Ag nanowire arrays (NWA) SERS substrates are fabricated by a screen-printing technique. The preparation of patterned ZnO NWA involves a two-step growth process. The ZnO nanoparticles-based ink is prepared and printed as seed layers, which are used as templates to fabricate patterned ZnO NWA via a hydrothermal method. During the screen printing process, the patterns of ZnO NWA are controlled by printing plates. The as-obtained NWA with uniform morphology was fabricated at 90 °C and exhibits hydrophilic and lipophilic properties. Subsequently, the sensitive 3D SERS substrates are fabricated through deposition of Ag nanoparticles (NPs) onto the surface of patterned ZnO NWA by magnetron sputtering. The detection limit of Malachite green (MG) can achieve 10−12 M with an enhancement factor of about 2.5 × 1010. Combined with the sensitivity and uniformity, the ZnO/Ag NWA is applied for the quick detection of low concentrations of molecules related to food safety, such as amoxicillin.
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Colloid and Interface Science Communications
·
2021
·
IF 4.914
Bingyan Li,Ick Soo Kim,Shenhua Dai,Muhammad Nauman Sarwar,Xuhong Yang
The development of polyacrylonitrile (PAN) fibers with multifunctional properties, such as photocatalytic and antibacterial properties, is an urgent need to expand their practical application. Herein, ZnO seeds were deposited on electrospun PAN fibers by dip-coating method, and then silver particles (Ag)@ZnO nanorods-decorated PAN fibers were prepared by hydrothermal method . The morphology, structure and performance of the fibers/membranes were studied. Compared with the ZnO nanorods- and seeds-decorated fiber membranes, the Ag@ZnO nanorods-decorated membrane showed excellent photocatalytic and antibacterial activities due to the formation of Ag/ZnO heterostructure . After UV irradiation for 90 min, the photocatalytic activity of the membrane was more than 90%, and can reach 99.0% after 150 min irradiation. Furthermore, after five cycles of photodegradation , the photocatalytic activity still remained 98.6%. The results suggest that the heterogeneous Ag@ZnO nanorods-decorated PAN fiber membrane with excellent, stable and reusable photocatalytic and antibacterial activities has potential application prospects in air and water purification.
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COMPOSITE INTERFACES
·
2020
·
IF 2.32
Lele Liu,Piqi Zhao,Shoude Wang,Ning Xie,Han Wang,Valeria Strokova,Lingchao Lu,Xin Cheng
How to give a full play of the photocatalytic performance of TiO2 in coatings has attracted immense academic interests in recent years. A major challenge is the good dispersion, more reactivity area and cost-effective fabrication. Here, TiO2-silica aerogel composite (AG/TiO2) was achieved in one step by silane coupling reaction. And the absorbance test proved that the bonding between them possessed satisfactory mechanical stability. SEM-EDS and BET analysis showed TiO2 could be well dispersed on the surface of AG clusters until it reached the maximum load amount approximate 6 wt%, which was in accordance with the regularity of photocatalytic performance. In the case of the optimum, the RhB degradation rate of AG/TiO2 could reach 82% by UV irradiation for 4 h. Subsequently, AG/TiO2 was mixed with polyacrylate emulsion to prepare photocatalytic functional coating. During the film formation process, the AG/TiO2 particles were supposed to migrate up spontaneously, which was proved by semi-quantitative XPS analysis of Si-dispersion. It would undoubtedly improve the rate of effective utilization of TiO2 in coatings. And the photocatalytic efficiency of RhB could be up to 88% at a low percentage (6%) after 8 h UV illumination. Furthermore, we also proved that the gradient-dispersed AG/TiO2 did not impair the mechanical properties of PAE coating.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Zhuan-li Bao,Hui Zhong,Xiao-rong Li,An-ran Zhang,Yi-xin Liu,Ping Chen,Zhi-peng Cheng,Hai-yan Qian
Herein, a novel electrochemical sensor based on core-shell Au@Ag nanoparticles deposited on carboxylated graphene (CG) was constructed for the simultaneous electrochemical determination of nitrite (NO 2 − ) and iodide (I − ). The CG/Au@Ag nanocomposite was prepared via two-step simple chemical reduction method. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to characterize the CG/Au@Ag nanocomposite. Au@Ag nanoparticles were distributed on the CG surface, providing more active sites for the electrocatalytic active center. The strong synergistic effect between Au@Ag nanoparticles and CG improved the conductivity of nanoparticles and provided a significant electrocatalytic performance on the flexible sensor. The CG/Au@Ag modified electrode showed a wide linear concentration range of 2.5–1250 μM, a low detection limit of 0.15 μM for NO 2 − and corresponding linear ranges of 3.5–1000 μM (peak I) and 500–1000 μM (peak II), and the detection limit of 0.1 μM for I − . It also demonstrated good anti-interference ability against various common interfering substances. Finally, the sensing platform was successfully applied to simultaneous determination of NO 2 − and I − in real samples. The present electrochemical strategy is promising to broaden the practical electrochemical application in environment.
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ACS Applied Nano Materials
·
2024
·
IF 5.3
Zhiwei Wang,Yefan Zhou,Junsheng Wang,Yun Wang,Jianwei Zhao,Wenjia Xu,Yuhua Feng
Currently, hybrid noble metal nanostructures have garnered significant interest due to their exceptional properties and diverse applications in fields such as catalysis, energy conversion, plasmonic sensing, and surface-enhanced Raman scattering (SERS). In this work, we report the highly site-specific growth of a single Ag island on both the concave face and the sharp tip of concave Au nanocube (c-AuNC) seeds, resulting in different c-AuNC-Ag Janus heterostructures. This site specificity was achieved by combining the surface curvature effect of the c-AuNCs with strong ligand-mediated interfacial energy control. Further integration of interfacial energy and growth kinetic control led to the formation of c-AuNC-(Ag)n core–satellite structures with varying numbers of Ag satellites. Benefiting from the continuous tunability of the interfacial energy and growth kinetics, the structural evolution of the c-AuNC-Ag hybrid structures continuously occurred, enabling precise control of the Au–Ag bimetallic structures. Notably, the resulting c-AuNC-Ag structures showed tunable intense localized surface plasmon resonance (LSPR) absorptions within the 400–1000 nm wavelength along with strong SERS signals. The broad spectral absorption and strong SERS made the c-AuNC-Ag structures promising candidates for SERS and LSPR-based applications, including sensing, imaging, light energy harvesting, and conversion. Moreover, the effective synthetic control demonstrated in this work could facilitate the development of advanced hybrid metal nanomaterials with valuable properties, further broadening their application potential across various fields.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Benlong Wei,Zhuannian Liu
Hybrid capacitive deionization (HCDI) is an innovative CDI technology that outperforms conventional CDI concerning desalination capability and charge efficiency. However, underutilized cathodes or anodes and mismatched kinetic behavior remain unsatisfactory given the imbalanced device architecture consisting of the capacitor and Faraday electrodes. Herein, we proposed a pseudo-capacitive behaviors induced dual-ion selective deionization (Di-CDI) strategy where molybdenum disulfide/polypyrrole (MoS 2 /PPy) acted as Na + intercalation cathode, and Ag-coated polyaniline-modified activated carbon (Ag@PANI/AC) served as Cl − trapping anode. In this system, the hollow PPy nanotube as the core is anchored by ultrathin MoS 2 nanoflakes, connecting loose MoS 2 nanoflowers to form a 3D flower-chain network, which holds convenient electron transfer routes and fast charge transport channels, facilitating accelerated ion diffusion process. Besides, Ag@PANI/AC was synthesized by modifying Ag particles on a 3D electron conduction substrate constructed by coupling PANI and AC, where Ag is responsible for the conversion reaction with Cl − to create AgCl. The conduction matrix compensates for the low conductivity of AgCl, enabling fast adsorption kinetics. As expected, the assembled Di-CDI system MoS 2 /PPy//Ag@PANI/AC delivers an excellent adsorption capacity of 25.1 mg g -1 , outstanding desalination rate (5.88 mg g -1 min -1 ), superior cycle stability (91.5% retention rate), and promoted charge efficiency of 56.2%, validating that this strategy supplies a viable way to achieve more energy-efficient CDI.
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SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Xinyuan Xie,Kai Wei,Dahai Gao,Minmin Zou,Dongmei Zeng,Ting Zhang,You Zhang
Ag-MOF nanoparticles were successfully synthesized using a convenient and mild liquid-phase route, employing AgNO 3 , imidazole, and trimesic acid (H 3 BTC) as a unique multifunctional organic ligand, which, unlike conventional Ag-MOF systems based on simple imidazole, enables the formation of a more stable and highly coordinated framework structure, thereby facilitating uniform particle distribution and improved functionality. This study investigated its antibacterial mechanism and effectiveness when the nanoparticles were integrated into acrylic coatings on AA2024 aluminum alloy substrates. The synthesized Ag-MOF particles demonstrated significant antibacterial activity, which is attributed to the sustained release of Ag + ions and its stable dispersion within the coating matrix. The reduction in E. coli and S. aureus populations was observed to be 95.9 % and 87.2 %, respectively. Benefiting from both the physical barrier effect and the controlled delivery of corrosion inhibitors, the coating exhibits improved durability against corrosion. Additionally, a bifunctional composite coating, featuring a cerium-doped sol-gel application as a bottom layer, was prepared to further improve antibacterial and anticorrosion properties. Electrochemical tests confirm that the composite coating shows the higher impedance modulus and the smaller corrosion current density across the low-frequency domain than neat coating, which was the contribution of the combined action of the inhibitor and the coating's barrier properties. According to the electrochemical impedance after 7 days immersion, the composite coating showed superior corrosion resistance comparing to the neat acrylic coating during immersion of seven days.
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