Surfaces and Interfaces
·
2024
·
IF 5.7
Jin Cheng,Lili Xing,Aijing Li,Xinpeng Chen,Jialuo Chen,Shenzhou Lu,Ning Qi,Guoqiang Chen,Tieling Xing
As a good substrate, silk fibers are widely employed in the field of intelligent textiles. In this work, the surface of silk fibers were firstly roughened by formic acid and sensitized by tannic acid, and then the silver ammonia solution was reduced by glucose to synthesize nano-silver in situ on the silk surface to obtain composite conductive silk fibers with resistivity as low as 0.24 mΩ·cm. It was proved by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) tests that a uniformly deposited nano-silver layer was fabricated on the silk surface. The prepared silk fibers had stable mechanical, thermal, electrical, and antibacterial properties and can be used for human sensing.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Fengjuan Chang,Mengting Zhang,Wanying Chen,Jian Lin,Yin Wang,Lina Yang
Constructing self-assembly with definite assembly structure–property correlation is of great significance for expanding the property richness and functional diversity of metal nanoclusters (NCs). Herein, a well-designed liquid reaction strategy was developed through which a highly ordered nanofiber superstructure with enhanced green photoluminescence (PL) was obtained via self-assembly of the individual silver nanoclusters (Ag NCs). By visual monitoring of the kinetic reaction process using time-dependent and in situ spectroscopy measurements, the assembling structure growth and the structure-determined luminescence mechanisms were revealed. The as-prepared nanofibers featured a series of advantages involving a high emission efficiency, large Stokes shift, homogeneous chromophore, excellent photostability, high temperature, and pH sensibility. By virtue of these merits, they were successfully employed in various fields of luminescent inks, encryption and anticounterfeiting platforms, and optoelectronic light-emitting diode (LED) devices.
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PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Ziheng Song,Xinxin Liu,Yanchun Fan,Lianyu Zhang,Xin Lv,Shuhong Li,Qiang Shi,Dong Zhang,Qingru Wang
Riboflavin (RF) and cysteamine (Cys) are vital in clinical and other fields, but their detection is often intricate and reliant on costly equipment and materials. Plasmon-enhanced fluorescence (PEF) using plasmonic nanoparticles offers a solution to enhance the optical properties of fluorophores. Additionally, fluorescence quenching becomes apparent when the distance between the fluorophores and nanostructures shrinks to a few nanometers. Harnessing these effects holds tremendous promise for improved detection performance. In this study, the PEF of RF by Ag@SiO2 nanoparticles was presented and used to improve RF detection. The fluorescence enhancement of RF was “turned off” in the presence of Cys because of the aggregation of Ag@SiO2 nanoparticles caused by Cys, which can be used for the detection of Cys. On the other hand, the quenched fluorescence of RF caused by small Ag nanoparticles was “turned on” in the presence of Cys, which can further realize the detection of Cys with lower concentrations. Additionally, the color of the Ag NPs-RF composites changed in the presence of Cys, which can also be used for the colorimetric detection of Cys. A minimum detected concentration as low as 16.6 nM was realized by fluorescence and colorimetric dual-mode detection. Depending on the interactions between the plasmonic nanoparticles and Cys, the plasmonic nanoparticles show great potential for the dual-mode detection strategy in the sensitive evaluation of analytes. The dual-mode detection based on the Ag nanoparticles provides the feasibility of the nanoprobe in potential applications, which opens a promising avenue for simple, sensitive, and selective detection.
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CHEMICAL PHYSICS LETTERS
·
2024
·
IF 2.8
Dongping Huang,Shuifa Shen
Monoclinic BiVO 4 material was successfully synthesized through a hydrothermal method, and silver (Ag) nanoparticles were deposited onto the surface of BiVO 4 using the photo deposition technique. The gas-sensing outcomes demonstrate that the BiVO 4 material loaded with 2 wt% Ag has a good gas-sensing response to isopropanol, which is about three times that of pure BiVO 4 . In addition, it exhibits a fast response within 10 s and well-stability. The improved gas sensing properties primarily come from the catalytic and spillover effect mechanism of Ag.
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Gels
·
2024
·Vol. 10
·期 6
·378
·
IF 5
Jun Wu,Wen Yan,Mengyuan Xie,Kai Zhong,Sheng Cui,Xiaodong Shen
Given the increasingly severe environmental problems caused by water pollution, the degradation of organic dyes can be effectively achieved through the utilization of photocatalysis. In this work, metal alkoxides and a combination of alcohol/hydrophobic solvents are employed to prepare BaTiO3aerogels via a liquid-phase and template-free synthetic route. The preparation process of the aerogels solely entails facile agitation and supercritical drying, eliminating the need for additional heat treatment. The binary solvent of ethanol and toluene is identified as the optimal choice, resulting in a significantly enhanced surface area (up to 223 m2/g) and an abundant pore structure of BaTiO3aerogels compared to that of the BaTiO3nanoparticles. Thus, the removal efficiency of the BaTiO3aerogel sample for MO is nearly twice as high as that of the BaTiO3nanoparticles sample. Noble metal Ag nanoparticles’ deposition onto the BaTiO3aerogel surface is further achieved via the photochemical deposition method, which enhances the capture of photogenerated electrons, thereby ensuring an elevated level of photocatalytic efficiency. As a result, Ag nanoparticles deposited on BaTiO3aerogel can degrade MO completely after 40 min of illumination, while the corresponding aerogel before modification can only remove 80% of MO after 60 min. The present work not only complements the preparatory investigation of intricate aerogels but also offers a fresh perspective for the development of diverse perovskite aerogels with broad applications.
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PubMed
高影响因子
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
·
2024
·Vol. 94
·期 3
·616-629
·
IF 0.9
Chen L.,Lian Q.,Li M.,Yu H.,Lv Y.,Guo M.,Zheng X.
Abstract Rod-shaped MnO 2 was synthesized by hydrothermal method. Ag@MnO 2 NRs were prepared with the Ag nanoparticles grown on the surface of rod-shaped MnO 2 by different reducing agents. The Ag@MnO 2 NRs were characterized by X-ray diffractometry, scanning and transmission electron microscopy, as well as X-ray photoelectron spectroscopy. The catalytic performance, catalytic mechanism and kinetic equation of the Ag@MnO 2 NRs were investigated. The as-prepared Ag@MnO 2 NRs were endowed with oxidase-like activity to catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue product without H 2 O 2 . Due to the inhibition of hydroquinone (HQ) on TMB oxidation, a simple, rapid, sensitive, and selective colorimetric sensor was set for the detection of HQ concentration in actual water. This method was established with an excellent linear range from 5–30 μM and a low detection limit of 1.7 μM. The colorimetric means could be availably used for the detection of HQ in river water samples and the RSD < 4.97%. The above results illustrated that the Ag@MnO 2 NRs had a great application prospect in environmental detection.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Bai Jiang,Jianxun Shang,Faying Zhang,Na Li,Yan Wang,Zuming Hu,Junrong Yu
Developing high-efficiency electromagnetic interference (EMI) shielding composite membranes along with additional functionalities to extend the application scenarios is highly desirable for the next generation electronic devices. Here, we report an ultrathin and flexible EMI shielding materials with sensitive Joule heating and outstanding infrared stealth performance was fabricated from poly-m-phenylene isophthalamide (PMIA) and Ag nanoparticles (AgNPs) through an innovation and simplicity method of electrospinning and electroless plating. Profiting from a continuous three-dimensional (3D) conductive network, the final membrane achieves an outstanding EMI shielding effectiveness (SE) of 100.51 dB (in X-band), a remarkable Joule heating properties with a fast thermal response and low driving voltage (<0.5 V), and an outstanding infrared stealth with a low infrared emissivity (0.28). Meanwhile, the prepared composite membrane demonstrates stable EMI SE even after water washing, continuous bending, and heating treatment. This work integrates high-performance fiber PMIA, characterized by high heat resistance, flame retardancy, self-extinguishing properties, and chemical resistance, with functions such as EMI shielding, infrared stealth, and autonomous thermal management. It has great development potential if utilized in specialized combat uniforms under harsh conditions.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 28
·1-11
·
IF 2.8
Chen Xiwen,Niu Xiang,Lai Junying,Tang Jiaxing,Xu Zhiyi,Luo Jiye,Yao Yingbang
We used bisphenol-F epoxy resin as an insulating polymer matrix, micron silver flakes and silver nanoparticles as conductive fillers, and dimethylformamide (DMF) as an organic solvent to obtain a Ag conductive adhesive with low resistivity. The silver content, organic solvent, and the ratio of micron silver to nano-silver were thoroughly investigated and optimized. Ultimately, it was determined that the optimal formulation for the conductive adhesive consisted of 86 wt \(\%\) silver with 40:1 micron silver to nano-silver, 10.24 wt \(\%\) epoxy resin, and 3.76 wt \(\%\) DMF. Tests for resistivity and shear strength were conducted on the optimal formulation. A resistivity as low as 8 μΩ cm was obtained. The shear strength can reach to ~ 87 MPa. The reduction in resistivity of the conductive adhesive is attributed to the ability of the formulation to allow micron and nano-silver to be tightly linked in the conductive adhesive to form a good conductive network and promote electron tunneling effect. The current silver conductive adhesive shows promise in microelectronic packaging industries.
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Nanomaterials
·
2025
·Vol. 15
·期 5
·383
·
IF 4.3
Haonan Chi,Pan Cao,Qi Shi,Chaoyu Song,Yuguang Lv,Tai Peng
This study synthesized graphene oxide (GO)/zinc oxide (ZnO)/silver (Ag) composite materials and investigated their photocatalytic degradation performance for ciprofloxacin (CIP) under visible light irradiation. GO/ZnO/Ag composites with different ratios were prepared via an impregnation and chemical reduction method and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results demonstrated that under optimal conditions (20 mg/L CIP concentration, 15 mg catalyst dosage, GO/ZnO-3%/Ag-doping ratio, and pH 5), the GO/ZnO/Ag composite exhibited the highest photocatalytic activity, achieving a maximum degradation rate of 82.13%. This catalyst effectively degraded ciprofloxacin under light irradiation, showing promising potential for water purification applications.
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MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Huiyi Fang,Jin Xu,Tangyin Cui,Li Bai,Jiawei Meng,Chuncheng Wei,Xin Geng,Xiaowei Li,Haibin Sun,Guangwu Wen,Peng Wang
Ag-Rh nanocages are synthesised by a facile method at 190 °C using Ag nanocubes and Na 3 RhCl 6 as sacrificial templates and precursor, respectively. Upon introduction of Na 3 RhCl 6 into Ag nanocube suspension in ethylene glycol (EG) with poly(vinylpyrrolidone), Rh(III) ions are reduced by EG and Ag atoms via galvanic reaction; simultaneously, the released Ag(I) ions are reduced by EG. The reduction and co-deposition of both Ag and Rh atoms result in the formation of highly porous Ag-Rh nanocages when high volume of Na 3 RhCl 6 is introduced. The Ag-Rh nanocages with Ag:Rh atomic ratio of 54.2:45.8 exhibit good catalytic activity toward the degradation of rhodamine 6G, reduction of 4-nitrophenol, and decomposition of hydrazine.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Qi Fu,Jiaxin He,Jiajun Zheng,Yanjun Xing,Qiuxiang Wang,Jiaxing Xiong,Wendong Zhu,Rong Xuan,Anan Fu,Xinlei Gan,Like Huang,Xiaohui Liu,Yuejin Zhu,Jing Zhang
Silver nanowire (Ag NW)-based transparent back electrodes prepared via all solution-process are promising for bifacial and semitransparent perovskite solar cells (PSCs). However, the inadequate electrical contact between the silver nanowires themselves and the contact with substrate leads to reduced overall solar cell performance; meanwhile, serious corrosion of Ag NW in ambient environment restricting the further applications. In this work, polyvinylpyrrolidone (PVP) as a binder in Ag NW electrode significantly enhances the conductivity and transparency at the same time improving the interface electric contact. The PSC with PVP modified Ag NW electrode demonstrated frontside and backside efficiency approaching 18 % and 14.1 % (AM1.5, 1 Sun), respectively, which achieves 82 % efficiency with normal Ag device and bifacial factor of 79 %. The long-term storage stability of PSC is also improved by PVP protection. The final device structure is ITO/Ni O x /MeO/(FA0.92MA0.08)0.95Cs0.05Pb(I0.9Br0.1)3/PEAI/PC61BM/BCP/ Ag NW. This work highlights the method to fabricate robust transparent Ag NW electrode for bifacial perovskite solar cells .
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CRYSTENGCOMM
·
2025
·
IF 2.6
Yinkun Liao,Yibo Hu,Yuanhao Zhou,Jingkun Chen,Xue Yang,Meng Gu,Kuan Ren,Jingtai Zhao,Qianli Li,He Feng
Copper halide scintillation materials with self-trapped exciton (STE) photoluminescence have attracted great interest in the field of optoelectronics. However, it is challenging for Cs3Cu2Br5 materials to achieve wider spectral emission and high spatial resolution X-ray imaging in applications. Herein, combining XRD and energy dispersive spectroscopy results, it is proved that Ag+ is doped into the Cs3Cu2Br5 lattice through an ion doping process, and PL is regulated from 460 nm to 543 nm. By density functional theory calculation, the band gap is reduced from 2.25 eV of Cs3Cu2Br5 to 1.99 eV of Cs3Cu2Br5:Ag, which is also consistent with the spectral redshift. The gradient study of the silver ion concentration from 5% to 35% shows that the best silver ion concentration is 25%. The experimental results show that the doped silver ions can improve the PL, PLE, PLQY, XEL and other properties of the material, such as the PLQY which increased from 27.38% to 90.62%. At the same time, Cs3Cu2Br5:Ag also has good stability, it can be stored in air for 30 days, and its PL intensity remains at 90.73%. The X-ray space of the Cs3Cu2Br5:Ag-UV scintillation film measured in a laboratory imaging system can reach 18.3 lp mm−1.
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