Molecular Catalysis
·
2025
·
IF 4.9
Jiayi Zhou,Hongyao Zhao,Yifang Zhang,Hongyang Zhu,Yueji Cai,Yanyun Wang,Danhong Shang,Tongyi Yang,Fu Yang,Jingjing Tang
The solar-driven photothermal photocatalytic contaminant degradation and water evaporation coupled technique is promising for practical wastewater treatment. This study developed photothermal HNTs@Ag/C-5 nanocomposites by polycondensation of tannic acid with silver and following carbonization to construct plasmonic silver nanoparticle onto halloysite nanotubes (HNTs). The incorporation of Ag onto HNTs enhanced electron-hole separation, enabling efficient activation of potassium peroxymonosulfate (PMS) under sunlight. A floatable integrated device was constructed by anchoring the catalyst to a melamine sponge via calcium ion-cross-linked sodium alginate. This device achieved 84.3 % degradation of carbamazepine (CBZ) in 90 min under light, with a reaction rate constant of 0.01685 min − ¹, nearly four times higher than unmodified halloysite nanotubes. The photocatalytic PMS activation over HNTs@Ag/C-5 also show great potential for detoxifying other pharmaceutical compounds such as tetracycline (TC) and norfloxacin (NFX) in wastewater. Radical trapping and quenching experiments confirmed hydroxyl radicals (·OH) as the dominant reactive oxidative species in CBZ degradation. Additionally, the device functioned as a solar-driven photothermal evaporator, achieving an evaporation rate of 1.654 kg m − ² h − ¹. Reusability tests demonstrated consistent performance, with only a 4 % efficiency drop after multiple degradation cycles. This reported monolith evaporator affords possible opportunity for treating complex wastewater when harnessing the evaporation to obtain freshwater and synchronously degrade contaminant.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Qing Yang,Hongbin Pu,Da-Wen Sun
The sensitive detection of quinalphos in food is crucial due to its improper use and the potential for serious harm. Surface-enhanced Raman spectroscopy (SERS) technology, provides a new way for rapid and ultra-sensitive detection. To exploit the molecular sieving effect of metal-organic frameworks (MOFs) in mitigating interference from food matrix components during pesticide residue detection, a novel chiral spiny L-Au@Ag@ZIF-8 (L-AAZ) three-layer core-shell composite was developed as an effective SERS substrate, with chiral L-AABPs providing abundant “hot spots” and spiny ZIF-8 shell provides excellent absorption properties, causing a five-fold increase in SERS intensity compared to traditional Au@Ag NPs. The experimental results revealed that L-AAZ achieved a high enhancement factor (EF) of 3.15 × 10 5 , a low limit of detection (LOD) of 6.56 × 10 −10 M, and a relative standard deviation (RSD) of 14.6 % for malachite green (MG), indicating its superior SERS sensitivity and consistency. Moreover, it demonstrated stable performance, maintaining good storage stability for up to 55 days. The substrate's suitability for the actual fruit sample (tangerine) was confirmed, showing an LOD of 10 ng/mL, demonstrating its capability for rapid and sensitive detection of trace amounts of pesticide residues in food.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Qin Wu,Yingchen Kang,Zhenhao Tang,Lujun Cui,Xuechun Yan,Zhongjin Ni
Paraffin wax (PW), despite being an excellent energy storage material, suffers from limited applications due to its low thermal conductivity and propensity for liquid-phase leakage. In this study, PW is employed as the phase change material (PCM), expanded graphite (EG) serves as the support material, and silver nanoparticles function as additives to enhance thermal conductivity. Silver-modified expanded graphite (Ag@EG) is synthesized through a liquid-phase reduction process. Subsequently, composite PCMs of Ag@EG/PW with varying mass ratios, which exhibit high thermal conductivity and stability, are fabricated via a vacuum impregnation method. Characterization techniques, including SEM, FTIR, XPS, and SEM-EDX, confirm the existence of Ag in EG in the form of well-dispersed elemental silver. XRD analysis demonstrates the favorable chemical compatibility of the composite PCMs. The prepared composite PCMs all possess a latent heat exceeding 110 J/g. Specifically, the thermal conductivity of the 1wt%Ag@10wt%EG/PW composite PCMs reaches 0.989 W/(m·K), representing a 292.5 % enhancement compared to PW. Additionally, this composite material exhibits excellent thermal cycling stability, anti-leakage properties, and temperature responsiveness. In conclusion, this research is expected to pave the way for the application of Ag@EG/PW composite PCMs in fields where high temperature sensitivity is required.
✓ 已验证
产品关联
DOI
高影响因子
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
·
2025
·
IF 3.4
Tao He,Hui Cao,Wang Lang,Zhaochu Hu,Zaicong Wang,Zongqi Zou,Wen Zhang,Haihong Chen,Yongsheng Liu
Silver is a powerful geochemical tracer in various geological processes (e.g., hydrothermal deposit formation and evolution of the terrestrial and Martian mantles). The measurement of the ultra-trace Ag (< 0.1 μg g -1 ) in geological samples by ICP-MS is often hindered due to serious polyatomic interferences arising from Zr, Nb and Y elements presented in samples. In this study, a simple and rapid ammonia coprecipitation method was developed to remove interference elements (Zr, Nb and Y) in NH 4 HF 2 digests for the determination of Ag mass fractions in geological materials by isotope dilution ICP-MS (ID-ICP-MS). The removal of interference elements (Zr, Nb and Y) in digestion solutions of geological materials was achieved using ammonia coprecipitation, effectively eliminating their polyatomic interferences. To compensate for the incomplete recovery of Ag during ammonia coprecipitation, isotope dilution calibration was chosen over internal standard calibration to achieve final accurate results. The limit of quantitation for Ag using the proposed method was 1.83 ng g -1 . The results obtained for Ag mass fractionation in nine international geological reference materials were in good agreement with the published values obtained by ID-ICP-MS and ICP-MS/MS. The proposed simple, rapid and practical analytical method for the determination of Ag mass fractions improves our understanding of the behaviour of silver in cosmochemistry and geochemistry studies.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2019
·
IF 4.916
Tian Jin,Yue Zhang,Yilei Li,Wenjie Jing,Yunchao Li,Louzhen Fan,Xiaohong Li
Due to severely overlapping emission and or/ excitation spectra of polycyclic aromatic hydrocarbons (PAHs), the specifically recognizing PAHs by the fluorescent technique is still a challenge. Here, synthesized Ag@SiO 2 nanoparticles with 40 ± 4 nm Ag core and 7 ± 1 nm SiO 2 shell performing as a nanoprobe could selectively recognize 2-aminoanthracene (2-AA) via metal-enhanced fluorescence (MEF) within 2 min. The sensing mechanism was based on the facts: (1) there was a perfect spectral overlap between the local surface plasmon resonance (LSPR) peak of Ag@SiO 2 and the absorptive peak of 2-AA, and (2) 2-AA could interact with Ag@SiO 2 nanoparticles through hydrogen bonds between –NH 2 in 2-AA and –OH in SiO 2 shell. As a result, with Ag@SiO 2 nanoparticles as a nanoprobe, a fluorescent assay for detecting 2-AA was developed with a linear range from 1 nM to 800 nM, which exhibited an excellent selectivity over possible PAHs, dyes and metal ions . The detection limit was 1 nM. Finally, the developed assay was applied to analyse 2-AA in industrial wastewater samples, which were highly consistent with that of high performance liquid chromatography (HPLC). This study presents a feasible assay for detecting 2-AA for environmental monitoring and toxic evaluating.
✓ 已验证
DOI
PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Lin Liu,Lin Hao,Wei Shen,Xinjian Yang,Yufan Zhang
This study presents the innovative design and synthesis of rice-stick-like Ag/polyoxometalates/nitrogen-doped carbon nanotubes (Ag/POM/N-CNTs) using an efficient and mild reduction method. N-CNTs are first synthesized through a self-degrading template method followed by the carbonization of polypyrrole nanotubes (PPy-NTs). The N-CNTs exhibit excellent characteristics, including a high length-to-diameter ratio and an interconnected nanotube structure, which shorten the electron transport distance and enhance electrochemical properties. During the process of loading Ag nanoparticles (Ag NPs) onto the N-CNTs, POM serves as both a reducing and linking agent. The synergistic effect between Ag species and N-CNTs significantly improves the catalytic performance of the nanohybrids. As a result, the Ag/POM/N-CNT-based electrochemical sensor demonstrates exceptional performance in adrenaline detection, with a broad linear range (0.40–700 μM), a low detection limit (0.30 μM, S/N = 3), and a sensitivity of 3.13 μA μM −1 . In addition to these advantages, the composite material also exhibits excellent specificity and stability, strongly indicating the practical application potential of Ag/POM/N-CNTs in adrenaline detection.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Baoxia Xue,Ziyang Shao,Jing Liu,Yong Liu,Mei Niu,Yongzhen Yang,Li Zhang
Aerogel dressings aid wound healing with exudate management. Although burn wound dressings have advanced, creating a low-cost option with exudate-absorbing, antimicrobial, hemostatic, and pro-healing properties remain vital. To achieve the anti-biofilm, hemostatic and anti-inflammatory with multiple effects, a multi-functional reduced graphene oxide/polydopamine/silver/cotton gauze (rGO/PDA/Ag/COT) dressing was designed by integrating the rGO/PDA/Ag aerogel with cotton gauze (COT) under the force of the C N bond. The dressing exhibited excellent biosafety (hemolysis rate < 5 %, cell viability >85 % on HUVEC cells), inhibited biofilms of E. coli and S. aureus by 98.66 % and 98.13 %, respectively (at 18 mg/mL extract), reduced hemostasis time by 25 % (322 ± 3.5 s vs. 427.5 ± 10.6 s for COT), and achieved a 91.93 ± 1.97 % wound closure rate in a rat deep second-degree burn model after 14 days. Because of antioxidant properties of PDA, the dressing effectively inhibited the production of inflammatory cells, upregulated TGF-β1 to promote VEGF expression, and enhanced the activity of VEGF and bFGF to stimulate endothelial cell and capillary formation in the burns healing. Given its numerous advantages, the rGO/PDA/Ag/COT dressing shows great potential for application in wound management and therapy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL SCIENCES
·
2025
·
IF 2
Xia Shaojie,Yang Zhenyuan,Sun Xiaohui,Huang Junjie,Peng Kuan,Wang Yonghong
Ochratoxin A (OTA), a highly toxic mycotoxin, extensively contaminates a wide range of food commodities. Given increasing demands for sensitive and user-friendly detection platforms, we developed a colorimetric OTA biosensor leveraging copper-silver nanoclusters (Cu/Ag NCs), whose peroxidase-like activity is augmented via G/C-rich DNA hybridization. The system employs two tailored DNA strands: a template strand featuring a cytosine-rich domain for NC synthesis flanked by terminal recognition segments and an enhancer strand containing a guanine-rich signal amplification domain and a complementary linker. Upon OTA binding with the aptamer, the apt-template complex dissociates, facilitating template-enhancer hybridization to form G/C-rich double-stranded DNA. This structural transition substantially enhances the peroxidase-like activity of DNA-Cu/Ag NCs, accelerating the oxidation of 3,3′,5,5′-tetramethylbenzidine by H 2 O 2 while simultaneously amplifying the colorimetric signal. Quantitative OTA detection is accomplished by monitoring this dynamic color response. The biosensor demonstrates a semi-log linear detection range from 5.0 nM to 1.0 μM with a detection limit of 5.0 nM. Furthermore, the specific test has high selectivity for other common mycotoxins, and its applicability has been validated through real sample analysis, suggesting that the DNA-Cu/Ag NCs biosensor used for OTA detection holds promising practical applications in food samples. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Junlong Zhang,Jie Wei,Long Yang,Ao Cao,Zehao Sun,Youxin Yuanfeng,Xuyu Shen,Bing Chen,Guogang Chen
With the rapid advancement of modern industry and population growth, unrestrained discharge of industrial effluent and domestic sewage has caused severe environmental pollution, which poses a severe challenge to human habitat. Owing to the unique eco-friendly characteristics, photocatalytic technology has emerged as a highly promising approach in the wastewater treatment very recently. Z-scheme heterojunction ternary photocatalysts of “ x · AgCl/ y · CoWO₄/Ag” were ingeniously designed and developed in this study, exhibiting exceptionally high photocatalytic activity for degrading micropollutants in wastewater compared with single-component photocatalysts. For instance, photocatalytic activity of AgCl/CoWO₄/Ag (reflected by the reaction kinetic parameter k ) is 7.7 times that of AgCl and 313 times that of CoWO₄, respectively. The experimental results and analysis revealed a typical Z-scheme charge transfer mechanism in these ternary photocatalyst heterojunctions, thereby confirming the structural characteristics of Z-scheme heterojunction. Furthermore, the ternary photocatalysts retained the reaction activity with virtually no change after undergoing five cycles of catalytic experiments, highlighting its excellent stability. Consequently, an underlying mechanism was proposed herein to account for the enhanced photocatalytic properties. It is believed that such ternary Z-scheme heterojunction materials expand halide-based heterojunction construction methods and promise significant implications for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xishun Peng,Yiheng Yuan,Anjiang Lu,Cunwei Wang,Caizhen Zu,Haili Zhang,Zhongchen Bai
Glyphosate (Gly) residues in agricultural products have a serious health risk, so it is urgent to seek a sensitive and convenient method for recognizing Gly residues in food. In this study, we proposed an electrochemical surface-enhanced Raman spectroscopy (EC-SERS) sensor of polyaniline/reduced graphene oxide/Ag/Cu (PANI/RGO/Ag/Cu) film to detect Gly residues. The EC-SERS sensor of PANI/RGO/Ag/Cu film had a large specific surface area, which could increase the binding sites of cu 2+ /Gly clathrates for boosting specifically its SERS signal. Moreover, Ag/Cu nanoparticles on the surface of film could effectively increase the differential pulse voltammetry signal and SERS signal of Gly molecules. The limit of detection of EC-SERS sensor to Gly could reach 1.9 nM. In addition, the EC-SERS sensor we prepared could also sensitively identify Gly residues on fresh fruit peels. The PANI/RGO/Ag/Cu film we proposed in this paper has great potential for selective and accuracy detecting Gly residues in agricultural products.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2025
·
IF 9.8
Xuyang Liu,Jian Zhang,Huanping Wu,Fuzhi Li,Zhihui Liu,Yingnan Ma,Jianqiang Meng
Membrane fouling significantly limits the application of membrane separation technology in the treatment of textile dyeing wastewater. In this study, a loose nanofiltration membrane made of polybenzimidazole (PBI) with enhanced antifouling and high-efficiency dye/salt separation capabilities was developed through Ag@UiO-66-NH₂ immobilization and hydrophilic polymer brush grafting. Initially, Ag@UiO-66-NH₂ nanoparticles, possessing antibacterial properties, were incorporated into the PBI base membrane. Subsequently, a brush-like antifouling layer was constructed on the membrane surface by grafting linear polypropylene glycol (PPG) and polyethylene glycol (PEG). Experimental results revealed that the grafting modification substantially improved the membrane's performance: the rejection of the small-molecule dye Methyl Red increased from 16.8 % to 59.6 %, and the membrane surface hydrophilicity was enhanced, leading to a slight improvement in pure water flux. Additionally, the grafted layer effectively suppressed the adsorption of bovine serum albumin, with a flux recovery rate remaining above 90 % after four fouling cycles. Furthermore, the membrane exhibited rejection of <10 % for inorganic salts (Na 2 SO 4 , NaCl, MgSO 4 and MgCl₂), achieving efficient separation of dyes and salts. In tests with simulated textile dyeing wastewater, the membrane's rejection for industrial dyes remained stable at over 90 %, and the addition of surfactants and auxiliaries had no significant impact on its performance. This study shows that the combination of immobilizing MOF nanoparticles with controlled release properties of biocides and grafting hydrophilic polymer brush can effectively improve the separation efficiency and antifouling performance of the membrane, which provides a new method for the treatment of complex textile printing and dyeing wastewater.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 71
·41591-41602
·
IF 3.049
Yu Qiao,Qian Han,Dong Li,Hongji Li,Bing Wei,Guangbo Che,Wei Jiang,Weisheng Guan
A novel Ag/metal–organic framework/graphitic carbon nitride (Ag/HKUST-1/g-C3N4, AHC) photocatalyst was prepared via an in situ growth strategy and photo-deposition technique for environmental remediation. The as-obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption isotherm measurement, UV-vis diffuse reflection spectroscopy (UV-vis DRS), and photoluminescence (PL) spectroscopy. The results indicated that the hybrids have large surface area, mesoporous structure and enhanced visible-light absorption. The as-prepared hybrid samples exhibited considerable improvement in photocatalytic activity and stability for rhodamine B (RhB) degradation under visible light irradiation (λ > 420 nm). In addition, they also have good adsorption properties. Compared to the pure g-C3N4 and Ag/g-C3N4, the 5% AHC photocatalyst showed superior photocatalytic activity. Moreover, 5% AHC exhibits good photocatalytic activity even after four cycles. Additionally, the active species trapping and electron spin resonance (ESR) experiments indicated that h+ and ·OH were the main active species.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）