NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 38
·16683-16691
·
IF 2.7
Xiaoyu Cao,Huifang Yang,Jihui Luo,Jianxian Zeng,Zhanfang Cao,Xiaoping Huang
Highly efficient and selective extraction of silver ions from wastewater remains a formidable challenge in ensuring public health and protecting ecosystems. Herein, an acyl-based thiourea extractant known as N-benzoyl-N′,N′-dibutyl thiourea (BDBTU) was used for the selective extraction of silver ions from aqueous solution by a solvent extraction method. BDBTU displayed an outstanding extraction efficiency of Ag(I) with an extraction ratio of 96.7% under the optimal extraction conditions, surpassing its effectiveness for Cu(II) and Mn(II) ions. In addition, BDBTU retained high effectiveness even after undergoing eight regeneration cycles, with only a slight decrease in the extraction efficiency from 96.7% to 95.2%. Moreover, it displayed selective extraction towards Ag(I) ions under the interference of metal ions (i.e., Cu(II), Pb(II), Mn(II), Zn(II), Ni(II), Co(II) and Na(I)). The investigation into the extraction mechanism of BDBTU towards Ag(I) unveiled that BDBTU provided a high affinity for Ag(I) accompanied by the formation of Ag–O–C and Ag–S–C bonds. These results indicated that the exceptional extraction stability and selectivity of BDBTU offer promising prospects for diverse applications, highlighting its potential in silver-containing wastewater treatment fields.
研究领域:
环境科学
·
化学工程
·
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
Flexible and Printed Electronics
·
2022
·Vol. 7
·期 1
·015007
·
IF 3.768
Qin Zhang,Yunfei Ren,Zhenguo Wang,Xiaolian Chen,Luis Portilla,Litao Sun,Dongyu Zhang,Jianwen Zhao
In this work, we have developed an eco-friendly and fast method for the preparation of large-area high-performance single-walled-carbon-nanotube (SWCNT)-based conductive thin films on polyethylene terephthalate substrates by roll-to-roll (R2R) gravure printing technology. Large-area (16 cm × 32 cm) conductive films, consisting of SWCNT or SWCNT/silver nanowire (AgNW) films, were fabricated for the first time by R2R gravure printing technique. The conductivity, transmittance, mechanical flexibility and heating ability were evaluated in detail. For example, the square resistances of the SWCNT thin film and SWCNT/AgNW composite film were 69.92 and 17.44 Ω/□ and the optical transmittance at a wavelength of 550 nm were 50.70% and 66.77%, respectively. Meanwhile, the prepared SWCNT and SWCNT/AgNW composite films exhibit excellent heating stability, temperature uniformity and resistance to bending. The composite films can withstand 6000 bending cycles at a curvature radius of 3.5 mm and obtain a temperature of up to 100 °C with a low driving voltage (6 V), a fast heating response (within 15 s) and heating rate (about 4.933 °C s−1). These properties reflect the potential of SWCNTs in improving the mechanical and heating properties of composite films, which are promising for low power, large area, flexible and customizable electronic devices.
研究领域:
材料科学
·
纳米技术
·
电子工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Yi Xie,Litong Chen,Xiang Zhang,Shengqiu Chen,Man Zhang,Weifeng Zhao,Shudong Sun,Changsheng Zhao
Development of antibacterial membranes is strongly desired for biomedical applications. Herein, we integrated antifouling and bactericidal properties on polymeric membrane surface via Schiff-based layer-by-layer (LbL) assembly. Zwitterionic polymers bearing plentiful amino groups (based on polyethylenimine (PEI) and sulfobetaine methacrylate (SBMA), and termed as PEI-SBMA) were utilized to prepare an antifouling membrane surface; then robust wide-spectrum bactericidal Ag nanoparticles (Ag NPs) were in situ generated on the surface. The as-prepared zwitterionic polymer surface showed excellent resistance to protein adsorption and bacterial adhesion. The Ag NPs could be tightly and uniformly distributed on the membrane surface by the chelation of PEI-SBMA, and endowed the membrane with bactericidal activity. Meanwhile, the Ag NPs loaded membrane could effectively resist bacterial attachment for a long time, even though the bactericidal activity lost. The proposed bactericidal and antifouling membrane was flexible, versatile and could be large-scale preparation; and this strategy would have great potential to be widely used to avoid undesired bacterial contamination of biomedical implants or biological devices.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Engineering Materials
·
2024
·
IF 0
Jiao Yang Lu,Zhen Qi Bu,Donghua Wang,Binsheng He,Wei Tao Huang
Nanocomposites have gained significant attention for various applications, such as sensing, catalysis, and energy. While graphene–silver and other similar combinations have been extensively explored, the synthesis of nanocomposites based on antimony and noble metals (such as silver and gold) remains unexplored. In this study, we introduced an approach for preparing silver nanoparticle (AgNP)-decorated antimony trioxide nanocomposites (Sb2O3–Ag) with exceptional catalytic properties. These nanocomposites, synthesized rapidly using antimonene (AM) and Ag+ precursors under microwave-assisted heating, exhibited promising catalytic performance. Characterization techniques, including transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR), confirmed the formation of Sb2O3–Ag nanocomposites, showcasing AgNPs dispersed on the surface of large irregular Sb2O3 particles. Evaluation of catalytic activity using p-nitrophenol (PNP) degradation revealed a rapid elimination rate of approximately 91.6% within 2 s. Several experimental parameters, such as the ratios of AM and Ag+ concentrations and the catalyst amount, were optimized to establish the best reaction conditions for PNP degradation. Furthermore, the sustained catalytic activity of Sb2O3–Ag nanocomposites over 1 month underscores their potential for long-term applications. Analysis through electron paramagnetic resonance spectroscopy suggests the generation of hydroxyl radicals responsible for PNP decomposition, supported by a proposed degradation pathway using electrospray ionization mass spectrometry. This study not only introduces a bimetallic nanomaterial based on Sb and Ag but also provides a sustainable solution for organic pollutant degradation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Chengwei Jiang,Chunfang Zi,Jing Li,Changxiang Hao,Shaoyong Cai,Yiqi Xu,Fengyu Su,Ge Cao,Yanqing Tian
While extensively employed in electronic packaging, the prevailing electrically conductive adhesives (ECAs) are currently constrained by their lack of flexibility, excessive manufacturing costs, and limited multifunctionality. In this work, the antimony-doped tin oxide flexible conductive adhesives (AFCAs) were prepared by incorporating the antimony-doped tin oxide (ATO) nanoparticles into a thermoplastic polyurethane (TPU) matrix along with silver flakes. The ATO nanoparticles acted as conductive bridges for sliver flakes to enhance the electrical conductivity and mechanical integrity of the composites. The AFCAs formulated with a mere 60 % Ag and 7 % ATO nanoparticles exhibited an exceptionally low volume resistivity of 2.01 × 10 -5 Ω·cm. After 10,000 mechanical bending cycles, the resistance change of AFCAs was only 8 %. Remarkably, the AFCA films also demonstrated excellent infrared stealth capabilities by infrared thermal imaging. This study demonstrates a facile strategy to develop high-performance and multifunctional AFCAs for flexible electrics with excellent electrical stability and infrared stealth capabilities.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2012
·
IF 5.602
Na Zhang,Fei Qu,Hong Qun Luo,Nian Bing Li
In this work, we present a label-free biosensor for the sensing of biothiols such as cysteine, homocysteine , and glutathione . This biosensor is based on the fluorescent probe , polyethyleneimine-capped silver nanoclusters . The selective binding of silver nanoclusters to biothiols promotes the silver nanoclusters agglomeration to yield larger non-fluorescent silver nanoparticles . And the fluorescence intensity of silver nanoclusters was quenched efficiently with increasing concentration of biothiols. The other amino acids introduced to the silver nanoclusters probe solution did not quench the fluorescence of the probe as they do not have thiol group which has strong affinity to the silver nanoclusters. Thus, this biosensor allowed selectively investigation of biothiols. The as-proposed biosensor was sensitive for the detection of biothiols. The linear ranges for cysteine, homocysteine, and glutathione were 0.1–10 μΜ ( R 2 =0.9930), 0.1–10 μΜ ( R 2 =0.9924), and 0.5–6 μΜ ( R 2 =0.9900), respectively. The detection limits for cysteine, homocysteine, glutathione were 42, 47, and 380 nΜ, respectively. The silver nanoclusters-based fluorescent biosensor provides a simple, cost-effective, and sensitive platform for the detection of biothiols.
研究领域:
生物化学
·
分析化学
✓ 已验证
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2024
·
IF 4.6
Shulei Li,Zhenxu Lin,Quantong Deng,Fu Deng,Mingcheng Panmai,Junying Chen,Yuheng Mao,Shimei Liu,Jun Dai,Yunbao Zheng,Rui Huang,Sheng Lan
Realization of long-term stable lasing from all-inorganic perovskite supercrystals is highly desirable for practical applications in optoelectronic devices. However, lasing from perovskite supercrystals excited by continuous wave laser light remains a challenge due to the photoluminescence degradation induced by thermal accumulation. Here, we report highly stable lasing with low threshold fom a CsPbClBr 2 supercrystal placed on a thin Ag film, which form a CsPbClBr 2 /Ag microcavity, by managing the thermal distribution inside the CsPbClBr 2 supercrystal. Combined numerical simulations and lifetime measurements, the localized electric field in such a hybrid microcavity leads to a spatially localized temperature distribution, which plays a crucial role in suppressing the thermal accumulation on the surface and in eliminating non-radiative recombination defects. The effective thermal management in the hybrid microcavity renders highly stable lasing with low threshold under the irradiation of continuouw wave laser light. Our findings provide a feasible and universal approach to the development of long-term stable perovskite laser.
研究领域:
光学工程
·
凝聚态物理
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材料科学
·
纳米光子学
·
激光技术
✓ 已验证
DOI
高影响因子
Journal of Nanomaterials
·
2014
·Vol. 2014
·期 1
·193201
·
IF 1.611
Yuan-Jun Song,Jing Chen,Jing-Yuan Wu,Tong Zhang
Silver nanowire has potential applications on transparent conducting film and electrode of electrochemical capacitor due to its excellent conductivity. Transparent conducting film (G-film) was prepared by coating silver nanowires on glass substrate using Meyer rod method, which exhibited better performance than carbon nanotube and graphene. The conductivity of G-film can be improved by increasing sintering temperature. Electrode of electrochemical capacitor (I-film) was fabricated through the same method with G-film on indium tin oxide (ITO). CV curves of I-film under different scanning rates had obvious redox peaks, which indicated that I-film exhibited excellent electrochemical pseudocapacitance performance and good reversibility during charge/discharge process. In addition, the specific capacitance of I-film was measured by galvanostatic charge/discharge experiments, indicating that I-film exhibits high special capacitance and excellent electrochemical stability.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
FIBERS AND POLYMERS
·
2020
·Vol. 21
·期 3
·505-512
·
IF 1.797
Gao Dangge,Liu Jingjing,Lyu Leihong,Li Yajuan,Ma Jianzhong,Baig Warda
Ag deposited ZnO (Ag/ZnO) nano materials with different Ag molar content were prepared via chemical precipitation method. The morphology of nano ZnO was rod like, while the size was 170 nm in length and 30 nm in diameter. Silver nanoparticles were found to be spherical with the diameter about 15 nm. When it deposited on the surface of the nano ZnO, the size of the nano ZnO was almost unchanged when the doping amount is 2.5 %. All the samples were treated on cotton fabric, and the laden fabric had excellent performance on hydrophobicity, including UV resistance, antibacterial activity and anti-mildew. The contact angle of fabric loaded with 3 % Ag/ZnO was 139 compare to nano ZnO, which was 103°. The fabric loaded with Ag/ZnO had superior performance of UV resistance. With the increase of depositing amount, the antibacterial rates were promoted; the antibacterial rates against S. aureus , E. coil , and C. albicans of fabric with 3 % Ag/ZnO were promoted to 91 %, 96 % and 98 %. Moreover, Ag/ZnO gave cotton fabrics good anti-mildew performance, especially A. flavus , and its anti-mildew effect could reach 0 grade.
研究领域:
材料科学
·
纺织功能材料
·
纳米复合材料
·
表面改性
·
抗菌材料
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 3
·2413-2418
·
IF 2.195
Hu Bo,Yang Fan,Peng Ye,Hang Chunjin,Chen Hongtao,Lee Changwoo,Yang Shihua,Li Mingyu
Ag nanoparticle (NP) paste is considered to be a next-generation thermal interface material. However, its sintered microstructure is at risk of volume shrinkage and mechanical property degradation under harsh environments. In this work, silicon carbide (SiC) NPs were mixed with Ag NP paste to improve the stability and reliability of sintered Ag joints. Robust joints were prepared by a rapid thermal compression method at 275 °C for 20 s. Although the addition of SiC NPs degraded the initial shear strengths of these joints, the SiC-containing joints exhibited excellent mechanical properties and microstructural stability during thermal shock tests from − 50 to 150 °C for up to 1000 cycles. When the added amount of SiC NPs was 2%, the joints achieved the highest shear strength of 87.1 MPa (after 1000 cycles). In addition, the shear strengths of the joints were investigated at 250 °C. The addition of SiC NPs is believed to enhance the reliability of joints at high temperature.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
LASER PHYSICS
·
2015
·Vol. 25
·期 11
·115601
·
IF 1.032
Shicai Xu,Shouzhen Jiang,Guodong Hu,Jie Wei,Li Wang,Junye Zhang,Qiuju Li
An efficient surface enhanced Raman scattering (SERS) substrate has been developed based on highly ordered arrays of graphene-isolated Ag nanodot (G/AgND) arrays. By combining the plasmonic activity of AgND arrays and unique physical/chemical properties of graphene, the G/AgND arrays show high performance in terms of sensitivity, signal-to-noise ratio and reproducibility. The SERS signals of R6G are clearly detected even at very low concentration of 10−11M. The maximum deviations of SERS intensities from 20 positions of the SERS substrate are less than 5%. The G/AgND arrays were employed for detection of human urinary nucleosides. The diagnostic algorithms based on principal component analysis achieved a diagnostic sensitivity of 91.1% and specificity of 93.3% for separating cancer from normal samples. This work demonstrates that G/AgND arrays used in Raman spectroscopy could be developed as a smart and promising system for detection and screening of cancers.
研究领域:
生物医学工程
·
分析化学
·
肿瘤学
✓ 已验证
DOI
高影响因子
Advanced Sensor Research
·
2023
·Vol. 2
·期 12
·2300079
·
IF 0
Xiyue Chen,Ruxue Yang,Xinchun Luo,Hailong Cheng,Xin Wu
Currently, owing to the increasing demand for continuous monitoring of health status, it is highly expected to develop functional sensors with satisfied performance. However, traditional sensors generally suffer from the disadvantages of inherent rigidity, limited range, and complicated fabricating methods, failing to provide the required detection. Well-developed printing technologies have opened a new era for fabricating electronics. The advantages of flexibility, easy scalability, and high resolution endow inkjet printing with the ability to manufacture devices with desired properties. In this work, a green carbon nanocolloid-silver composite ink is facilely prepared and successfully applied in inkjet printing of strain sensors. Good performance such as high sensitivity (a gauge factor of 267.5), fast response (114 ms), long service life, and outstanding stability (>3000) is demonstrated for the as-fabricated sensors. Moreover, the printed sensors are revealed to be capable of monitoring multiscale human motions for practical application as a wearable device.
研究领域:
材料科学
·
纳米技术
·
电子工程
·
生物医学工程
✓ 已验证
DOI
危险品化学品经营许可证（带存储）