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.
✓ 已验证
产品关联
DOI
PubMed
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.
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2024
·
IF 4.4
Chunlai Zhang,Yingdong Hao,Xingbo Wang,Deng Hu,Nannan Sun,Wei Wei
Photocatalysis is a highly promising strategy for the direct conversion of inert methane (CH4). In this study, a ZnO semiconductor with a nanorod morphology (r-ZnO) was synthesized using a template-directed hydrothermal method, which was further used to prepare nAg/r-ZnO photocatalysts through impregnation and reduction. The structure, composition, and microstructure of nAg/r-ZnO were characterized using techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and UV-visible absorption spectroscopy (UV-vis). The in-depth mechanism of the photocatalytic conversion of CH4 was revealed through electron paramagnetic resonance (EPR) and radical capture experiments. The results showed that the introduction of Ag species promoted the separation of photoinduced electron (e−) and hole (h+) pairs, which facilitated the generation of reactive oxygen species (ROS). Therefore, the performance of photocatalytic CH4 oxidation can be significantly enhanced. Interestingly, formaldehyde (HCHO) was generated as the primary product instead of low-value methanol (CH3OH). Through optimization of Ag loading and reaction conditions, an excellent oxygenate (CH3OOH, CH3OH, and HCHO) yield of 15 551.60 μmol g−1 h−1 with a high selectivity of 98.46% was achieved simultaneously, which has been rarely reported in previous studies.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2012
·Vol. 7
·期 8
·1781-1788
·
IF 4.5
Shaofeng Zhang,Wei Wu,Xiangheng Xiao,Juan Zhou,Jinxia Xu,Feng Ren,Changzhong Jiang
Graphical Silver surfer : Polymer-supported bimetallic nanocomposites (PS-Ag@AuAg) were synthesized by using a seed-growth process. The LSPR of these composites could be tailored over a large scale. The catalytic activity of the nanocomposites was remarkably superior to that of the supported monometallic nanocomposites. Supported noble bimetallic nanomaterials have attracted great interest owing to their applications in catalysis. Herein, polystyrene-supported Ag@AgAu bimetallic nanocomposites were synthesized by using a seed-growth route. The size and degree of coverage of the Ag@AgAu NPs could be controlled by changing the experimental parameters. SEM, TEM, STEM, EDS, and XPS analysis was used to characterize the morphology, structure, and composition of these nanocomposites. We found that the bimetallic nanoparticles on the polystyrene beads had a core–shell structure that was comprised of a Ag core and a AgAu alloy shell. The optical properties of the nanocomposites were also studied by UV/Vis/NIR spectroscopy, which indicated that the localized surface plasmon resonance (LSPR) absorptions of the nanocomposites could be tailored over a large scale from 450 nm to 950 nm. The catalytic properties of the nanocomposites were studied by using the reduction of 4-nitrophenol (4-NP) by NaBH 4 as a model system. The results showed that the catalytic activity of the polystyrene-supported Ag@AgAu bimetallic nanocomposites was remarkably superior to that of polystyrene-supported monometallic Ag and Au nanocomposites with the same nanoparticle size. In addition, an investigation of the recycling catalytic activity of the PS-Ag@AgAu nanocomposites revealed that the catalyst possessed good stability. The enhancement of the catalytic activity was proposed to be due to the ligand and strain effects between Ag and Au.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
AIP Advances
·
2024
·Vol. 14
·期 11
·
IF 1.4
Liu Xiao-Bin,Dai Xiao-Hua,Li Li,Shen Jing,Li Wei,Li Chang-Yi
Enterococcus faecalis ( E. faecalis ) is one of the dominant bacteria in infected root canals, and it is tolerant to commonly used root canal disinfectants. Ag + has a certain antibacterial effect on E. faecalis , but the instability and potential toxicity of Ag + limit its application. Metal azolate framework-7 (MAF-7) is a typical metal–organic framework that has been used for drug delivery due to its high encapsulation efficiency, tunable release profile, and low cytotoxicity. In this study, we used a simple method for the synthesis of Ag + /MAF-7 nanocomposites. After characterization via several techniques, the antibacterial activity of this nanocomposite against E. faecalis was investigated. Ag + was found to be uniformly bound to MAF-7, and the resulting Ag + /MAF-7 nanocomposite showed significant antibacterial activity against E. faecalis . This study demonstrates the potential application of nanocomposite antibacterial materials in treating infected root canals.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
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 .
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）