JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Qingyong Li,Fulei Wang,Yuxiang Hua,Yuting Luo,Xiaoheng Liu,Guorong Duan,Xujie Yang
A series of novel visible-light-driven Ag/Ag 3 PO 4 /WO 3 (AAPW) Z-scheme heterostructures were fabricated using a facile deposition-precipitation method followed by photo-reduction without adding any surfactant . To explore more deeply about the photocatalytic activity of AAPW nanocomposites under neutral and strongly acidic/alkaline conditions, we investigated their photocatalytic rhodamine B (RhB) efficiency at different pH value that was controlled by adding HNO 3 or NaOH aqueous solution. It was found that as-prepared AAPW photocatalysts showed enhanced photocatalytic RhB efficiency under neutral and even strongly acidic/alkaline environment. The process of charge carrier separation and transfer in the AAPW nanocomposites and Z-scheme mechanism for RhB degradation were described in sufficient detail based on systematical characterizations and measurements. The silver particles introduced to build AAPW Z-scheme structure should contribute to more efficient charge separation, resulting in enhanced photocurrent response and photocatalytic activity . We expect that this work will provide systematic study concerning Z-scheme Ag/Ag 3 PO 4 /WO 3 structure, and fulfill the research about photodegrade activity of catalyst under strongly acidic/alkaline conditions.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2021
·Vol. 50
·期 12
·6772-6783
·
IF 1.938
Hou Xiaoshuo,Yang Ming,Yu Hui,Yang Ying,Li Dan,Dong Xiangting
In this work, a 3D Z-scheme photocatalyst Ag/AgBr/Zn 3 V 2 O 7 (OH) 2 ·2H 2 O (Ag/AgBr/ZVO) was synthesized by a hydrothermal method, and a subsequent surface deposition-optical reduction technique. The prepared flower-like Ag/AgBr/ZVO was characterized by scanning election microscopy (SEM), x-ray powder diffraction (XRD), x-ray photoelectron spectroscopy (XPS), UV-vis spectrophotometry, N 2 adsorption-desorption isotherm based on Brunauer-Emmett-Teller (BET) theory, and electrochemical tests. The photocatalytic degradation performance of the catalyst was investigated by the degradation of methylene blue (MB) dye by visible light irradiation. Compared with bare Zn 3 V 2 O 7 (OH) 2 ·2H 2 O (ZVO) nanoflowers, the photocatalytic effect of the 3D Z-scheme heterojunction Ag/AgBr/ZVO was significantly enhanced. The catalyst of 2h-Ag/AgBr/ZVO exhibited the strongest photocatalytic activity, of which the MB degradation rate is about 98.8% in 100 min, which was about five times that of pure ZVO. The increase in the photodegradation rate is ascribed to the accelerated interface charge-transfer process, the faster photogenerated carrier separation rate and the enhancement of visible light absorption. In view of the trapping of the reaction intermediate and the electron spin resonance (ESR) measurement, we propose a possible Z-scheme photocatalytic mechanism. This improved visible-light response likely originates from a synergistic effect of the different components. This work offered an ideal method for producing stable, efficient, and recyclable photocatalysts suitable for use in the visible light range.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2021
·
IF 4.556
Guangxin Lv,Beichen Shi,Hong Huang,Haodong Chen,Huajie Feng,Pan-Pan Zhou,Weichun Ye,Zhifei Zhang,Zhaoyong Yang
NiO nanoparticles (NPs) with small Ag NPs loading supported on reduced graphene oxide nanosheets (ternary NiO/Ag/RGO nanocomposites) were synthesized via a hydrothermal process followed by high-temperature calcination, extending the synergistic effects among noble metal, metal oxide and carbon materials. Based on ternary NiO/Ag/RGO nanocomposites, a new electrochemical sensor was fabricated for the detection of sunset yellow (SY) in soft drinks through cyclic voltammetry, Tafel plot and differential pulse voltammetry. The experimental conditions were optimized and kinetic parameters studied. Due to the synergistic effect of the ternary components, the prepared sensor exhibited superior electroanalytical performance toward SY detection, including wide linear range from 0.1 to 50 μM and from 50 to 450 μM, low detection limit of 13 nM, excellent specificity against various interfering colorants, good reproducibility and stability. Importantly, the electrochemical sensors was successfully employed for quantitative SY analysis in soft drinks with satisfactory recoveries, where the analyzed results were also in agreement with LC/MS analysis.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Wei Wu,Nana Liu,Xiaohui Sun,Xueying Zhao,Quan Yuan,Xuyang Zhang,Bo Wang,Li'e Mo,Xiangwei Wang,Xianhui Rong,Guohua Wu
Polymer dispersed liquid crystals (PDLC) could function as an energy-efficient smart window, enabling the reversible transition between transparent and opaque states when applied bias voltages. However, the requirement for high switching voltages presents a challenge, resulting in severe energy consumption that contradicts objectives for sustainable energy conservation and emission reduction. Herein, this study synthesizes barium titanate/methyltrimethoxysilane/silver (BTO/MPTMS/Ag) composites successfully and incorporates it into the PDLC, designing for the low-energy-consumption smart window. Barium titanate nanowires (BTO NWs) enhance the dielectric constant of the PDLC film, while Ag nanoparticles (Ag NPs) exploit localized surface plasmon resonance (LSPR) to amplify the local electric field. Consequently, this synergistic effect of BTO NWs and Ag NPs reduces the threshold voltage and the saturation voltage to 10 V and 19 V, corresponding to decreases of 60 % and 62 %, respectively. Significantly, experiential results confirm that the incorporation of BTO/MPTMS/Ag nanoparticles does not affect the electro-optical nature of the PDLC film adversely. The work provides a promising approach for the preparation of advanced optical devices and energy-efficient equipment.
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高影响因子
LETTERS IN APPLIED MICROBIOLOGY
·
2024
·Vol. 77
·期 7
·
IF 2
Tan Xiqian,Pei Jianbo,Zhang Defu,Cui Fangchao,Wang Dangfeng,Li Xuepeng,Li Jianrong
Hafnia sp. was one of the specific spoilage bacteria in aquatic products, and the aim of the study was to investigate the inhibition ability of the silver nanoparticles (AgNPs) biosynthesis by an aqueous extract of Prunus persica leaves toward the spoilage-related virulence factors of Hafnia sp. The synthesized P-AgNPs were spherical, with a mean particle size of 36.3 nm and zeta potential of 21.8 ± 1.33 mV. In addition, the inhibition effects of P-AgNPs on the growth of two Hafnia sp. strains and their quorum sensing regulated virulence factors, such as the formation of biofilm, secretion of N-acetyl-homoserine lactone (AHLs), proteases, and exopolysaccharides, as well as their swarming and swimming motilities were evaluated. P-AgNPs had a minimum inhibitory concentration (MIC) of 64 μg ml−1 against the two Hafnia sp. strains. When the concentration of P-AgNPs was below MIC, it could inhibit the formation of biofilms by Hafnia sp at 8–32 μg ml−1, but it promoted the formation of biofilms by Hafnia sp at 0.5–4 μg ml−1. P-AgNPs exhibited diverse inhibiting effects on AHLs and protease production, swimming, and swarming motilities at various concentrations.
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Dan Lin,Lingfei Li,Xin Song,Shihao Xu,Qianru Zhang,Zhong Hu,Liang Yang,Changlong Jiang
The present work reports a fluorescent sensor by utilizing a composite Rhodamine B-Ag@Au nanoprobe for the visual and semi-quantitative assay of organophosphorus pesticide (OP) residues via a “light up” sensing phenomenon. Core–shell structured Ag@Au NPs can directly quench the orange fluorescence of Rhodamine B (RB) at 580 nm based on Förster resonance energy transfer. Due to the stronger coordination ability of Ag@Au NPs with OPs, OP residues can displace RB from the surface of Ag@Au NP; thus, the RB fluorescence can effectively recover. Under optimum conditions, the composite fluorescent nanoprobe shows sensitive responses to OP residues in the range of 0.001–0.4 μM with a sensitive detection limit (LOD) of 7.89 nM. Moreover, combined with the smartphone color recognizer application (APP), the ratio of fluorescence intensity response is recorded on the green channel (G)/red channel (R), which has been employed for visual quantitative determination of OPs with an LOD of 16.3 nM. This proposed light up fluorescent sensor is also applied to OP residue identification in real water and agricultural samples with highly promising performance. The method reported here provides a convenient pathway for rapid and visual detection of pesticide residues utilizing organic composite nanomaterials.
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高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 5
·056519
·
IF 1.62
Yanqing Xue,Qitang Hao,Bo Li,Xinliang Wang,Chengze Yin,Han Zhang
To surmount the longstanding puzzle of strength-ductility trade-off, efforts had been made to apply Mg - Ag microalloying on 5%TiB2/Al-4.5%Cu composites by in situ molten salt reaction and subsequent heat treatment. The obtained composites achieve an eye-catching tensile elongation (δ) of 6.1 ± 0.4%, while maintaining elevated ultimate tensile strength (UTS) of 497 ± 4 MPa and yield strength (YS) of 401 ± 3MPa. Comprehensive characterization demonstrated that the uniformly distributed TiB2 particles together with semi-coherent grain boundaries between the α-Al matrix and reinforcement phase (TiB2 particles, Ω-Al2Cu, σ-Al5Cu6Mg2) facilitated the dislocation motion integrally, which eliminated the stress concentrations, may be the main reason for amelioration in the strength-ductility trade-off of the composites when subject to rigorous multi-step heat treatment.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Teng Chen,Xin Li,Qiyuan Wang,Ye Li,Le Xu,Yihang Yang,Yunfan Qiao,Yuchen Dai,Jie Ke,Hongri Wan,Shuai Zhou,Zhaojian Gao
The frequently encountered wastewater contaminations, including soluble aromatic compound and dye pollutants, pathogenic bacteria, and insoluble oils, have resulted in significant environmental and human health issues. It poses a challenge to utilize identical materials for the treatment of complex wastewater. Herein, in this research, multifunctional Ag NPs/guar gum hybrid hydrogels were fabricated using a facile in situ reduction and self-crosslinking method for efficient remediation of complex wastewater. The Ag NPs/guar gum hybrid hydrogel showed remarkable remodeling, adhesive, and self-healing characteristics, which was favorable for its versatile applications. The combination of Ag NPs with the guar gum skeleton endowed the hybrid hydrogel with exceptional catalytic activity for reducing aromatic compounds and dye pollutants, as well as remarkable antibacterial efficacy against pathogenic bacteria. In addition, the Ag NPs/guar gum hybrid hydrogel could be employed to coat a variety of substrates, including cotton fabrics and stainless steel meshes. The hydrogel coated cotton fabrics and meshes presented superhydrophilicity/underwater superoleophobicity, excellent antifouling capacity, and outstanding recyclability, which could be successfully applied for efficient separation of oil-water mixtures. The findings of this work provide a feasible and cost-effective approach for the remediation of intricate wastewater.
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高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 7
·1-9
·
IF 5.7
Wang Wenxi,Ruan Shuyan,Su Zhixiong,Xu Peipei,Chen Yujia,Lin Zheng,Chen Jingbo,Lu Yudong
A novel S-CNF-based nanocomposite was created using sulfonated cellulose nanofiber (S-CNF) to enable the detection of NADH in serum by surface-enhanced Raman spectroscopy (SERS). The numerous hydroxyl and sulfonic acid groups on the S-CNF surface absorbed silver ions and converted them to silver seeds, which formed the load fulcrum. After adding a reducing agent, silver nanoparticles (Ag NPs) were firmly adhered to the S-CNF surface to form stable 1D “hot spots.” The S-CNF-Ag NP substrate demonstrated outstanding SERS performance, including good uniformity with an RSD of 6.88% and an enhancement factor (EF) of 1.23 × 10 7 . Owing to the anionic charge repulsion effect, the S-CNF-Ag NP substrate still maintains remarkable dispersion stability after 12 months of preservation. Finally, S-CNF-Ag NPs’ surface was modified with 4-mercaptophenol (4-MP), a special redox Raman signal molecule, to detect reduced nicotinamide adenine dinucleotide (NADH). The results showed that the detection limit (LOD) of NADH was 0.75 μM; a good linear relationship ( R 2 = 0.993) was established in the concentration range 10 −6 – 10 −2 M. The SERS nanoprobe enabled rapid detection of NADH in human serum without any complicated sample pretreatment and provides a new potential to detect biomarkers. Graphical
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 38
·16683-16691
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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.
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高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Hegeng Wei,Zebo Li,Yifan Yao,Wentao Li,Yangbin Fang,K.N. Tu,Guannan Yang,Yu Zhang,Guanghan Huang,Chengqiang Cui
Graphene oxide (GO) has emerged as a promising reinforcement material for metal matrix composites due to its exceptional properties. However, achieving homogeneous graphene dispersion within the metal matrix remains a critical challenge that significantly impacts the performance of the composite. In this study, we developed an innovative dual-dispersion medium approach to fabricate Cu@Ag/GO composites. The Cu@Ag particles and GO sheets were dispersed in ethanol in deionized water separately, followed by ultrasonic-assisted mixing and hot-press sintering to create a three-dimensional GO network structure. Experimental results indicate that the dual-dispersion method is conducive to the uniform attachment of GO to the silver-coated copper surface through hydrogen bonding, thereby reducing structural defects and effective effectively inhibiting Ag dewetting. The optimized composite containing 0.2 wt% GO exhibited significantly enhanced sintering properties compared to Cu@Ag: a shear strength of 94.3 MPa (50.2% improvement), thermal conductivity of 240.0 W/(m·K) (60.5% improvement), and reduced electrical resistivity of 4.7 μΩ·cm (38.8% decrease). This facile fabrication method of Cu@Ag/GO composites offers significant potential for developing high-performance die-attach and interconnect materials with superior mechanical strength, thermal transfer, and electrical conductivity for advanced power module applications.
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产品关联
DOI
高影响因子
SOLAR ENERGY
·
2025
·
IF 6.6
Yan Zhu,Bin Yao,Zhanhui Ding,Yongfeng Li,Liyuan Shi,Chunkai Wang,Ding Ma,Mengge Li,Yue Liu,Ning Ding,Yuting Sun,Xiaofei Sun,Shaung Li
In this work, non-uniform Ag and In co-doped CZTSSe (NoU-Ag x In y , x = Ag/(Ag + Cu) = 0–15 %, y = In/(In + Zn + Sn) = 0–12 %) was prepared by doping Ag at the front surface of CZTSSe and doping In at the back surface of CZTSSe. CZTSSe solar cell with conventional structure but without anti-reflection layer was fabricated by using the NoU-Ag x In y as absorber (Cell-NoU-Ag x In y ). Through optimizing the Ag and In doping concentration, the highest PCE of 11.82 % was achieved in the cell-NoU-Ag x In y with x = 10 % and y = 8 %. It is higher than the highest PCE (9.05 %) of CZTSSe solar cells obtained in this work and the highest PCE (9.45 %) of uniform Ag and In co doped CZTSSe solar cells with similar doping concentrations of Ag and In. Compared to CZTSSe solar cell, the increased PCE of cell-NoU-AgIn is dominantly due to decreased J 0 , followed by increase in J L . The decrease in J 0 is mainly attributed to reduce in number of [2Cu Zn + Sn Zn ] defect clusters and of ZnSe at front interface induced by Ag doping, as well as formation of passivation field at back interface induced by In doping. The increase in J L is mainly due to increase in depletion region width induced by the Ag doping and formation of the passivation field. This study demonstrates that non-uniform Ag and In doped CZTSSe is favorable to increasing PCE of CZTSSe solar cells.
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DOI
高影响因子
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