Journal of Materiomics
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2022
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IF 8.589
Ning Pan,Shuhui Liu,Ying Han,Dejie Li,Jinling Chai
A comparison study was conducted on the performance of the Ag 2 CO 3 visible light catalysts synthesized in a surfactant-free microemulsion (SFME), water and water/propan-2-ol mixture, respectively. The XPS spectra show that all the synthesized Ag 2 CO 3 products have good purity. The SEM, XRD, BET and DRS characterizations indicate that the Ag 2 CO 3 product synthesized in the SFME template has higher crystallinity, more regular morphology, more uniform size, larger specific surface area, and stronger visible light absorption performance, thus having better catalytic photodegradation activity for rhodamine B (RhB), methylene blue (MB) and methyl orange (MO). When the degradation time reaches 45 min, the degradation rate of RhB is as high as 99.11 %. Na 2 CO 3 has a good stabilizing effect when its concentration is 0.001 mol L −1 . This research is of great significance to expand the application of SFMEs in the synthesis of high-efficiency catalytic materials.
研究领域:
材料科学
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环境科学
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2023
·Vol. 415
·期 22
·5551-5562
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IF 4.3
Li Jun,Liu Shanghua,Dong Hui,Li Yueyuan,Liu Qing,Wang Shujun,Wang Ping,Li Yang,Li Yueyun,Wei Qin
An efficient photo-to-electrical signal is pivotal to photoelectrochemical (PEC) biosensors. In our work, a novel PEC biosensor was fabricated for the detection of neuron-specific enolase (NSE) based on a ZnIn 2 S 4 /Ag 2 CO 3 Z-scheme heterostructure. Due to the overlapping band potentials of the ZnIn 2 S 4 and Ag 2 CO 3 , the formed Z-scheme heterostructure can promote the charge separation and photoelectric conversion efficiency. And the concomitant Ag nanoparticles in Ag 2 CO 3 provided multiple functions to enhance the PEC response of the Z-scheme heterostructure. It acts not only as a bridge for the transfer of carriers between ZnIn 2 S 4 and Ag 2 CO 3 , promoting the constructed Z-scheme heterostructure, but also as electron mediators to accelerate the transfer of photogenerated carriers and improve the capture of visible light of the Z-scheme heterostructure by surface plasmon resonance (SPR). Compared with single Ag 2 CO 3 and ZnIn 2 S 4 , the photocurrent of the designed Z-scheme heterostructure increased more than 20 and 60 times respectively. The fabricated PEC biosensor based on a ZnIn 2 S 4 /Ag 2 CO 3 Z-scheme heterostructure exhibits sensitive detection to NSE, and presents a linear range of 50 fg·mL −1 ~ 200 ng·mL −1 with a limit of detection of 4.86 fg·mL −1 . The proposed PEC biosensor provides a potential approach for clinical diagnosis.
研究领域:
分析化学
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生物传感器
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光化学
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纳米技术
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生物医学工程
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高影响因子
Food Packaging and Shelf Life
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2025
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IF 10.6
Xin Ding,Yiming Zhao,Xin Chen,Yanyan Huang,Zhihao Lin,Jing Wang,Ge Chen,Guangyang Liu,Xiaomin Xu,Bining Jiao,Xijuan Zhao,Donghui Xu
Chitosan film is frequently used to preserve food. However, the stability of chitosan film is poor, so it is crucial to strengthen the stability, anti-ultraviolet, antibacterial activity, anti-oxidation and continuous fresh-keeping activity of chitosan film. In this work, paeonol@ZIF-8 and Ag 2 CO 3 /Ag 2 O nano-heterojunctions were dispersed into chitosan/kudzu-based solution by matrix mixing and solution casting method, which successfully prepared a biodegradable nanocomposite film and used it for preservation of raspberry. Moreover, ZIF-8 provided a large number of active sites to PAE. The loading rate of PAE@ZIF-8 was 36.33 ± 0.82 % by a simple one-pot process. The paeonol@ZIF-8 had the effect of slow release in different food environments and intelligent response to pH. The Ag 2 CO 3 /Ag 2 O nano-heterojunctions also cooperated to inhibit bacteria by releasing silver ions. Meanwhile, the physical and chemical properties of chitosan film were improved, which could make it more suitable for food packaging. The improved film could block 90.32 % of UV–visible light. Moreover, its antioxidant and antibacterial properties were increased by 1.24 times and 4 times, respectively. It could extend the shelf life of raspberries to 5 days as the hydrophobic film. The nanocomposite film also effectively maintained cucumber slice quality. It also found that the migrating silver ion content of raspberry and cucumber slice complied with EU food safety law regulations. Importantly, the nanocomposite film was degradable and did not affect the germination and growth of the seed. Our work provides a sustainable multifunctional food packaging material that can be used to preserve perishable foods.
研究领域:
食品科学
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材料科学
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纳米技术
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高分子科学
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农业工程
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Congyang Zou,Yujie Wang,Jie Tian,Ruijie Liu,Minjie Yang
The Ag 2 CO 3 /Cu-BiVO 4 (ACCB) Z -scheme heterojunction photocatalyst was synthesized via a combined hydrothermal and deposition method to activate peroxydisulfate (PDS) for efficient degradation of norfloxacin (NOR). Compared with conventional photocatalysts, the as-prepared Z -scheme heterojunction effectively promotes the separation of photogenerated carriers via a Z-scheme charge transfer pathway. Systematic characterizations including XRD, SEM, and XPS verified the successful preparation of the ACCB Z -scheme heterojunction and the incorporation of Cu, both of which play key roles in enhancing PDS activation and NOR degradation. Photocatalytic degradation experiments demonstrated that ACCB-100 exhibited optimal performance among the ACCB catalyst series under visible light irradiation, achieving a NOR degradation efficiency of 95.68% within 120 min, which was significantly superior to those of the pristine single-component materials. Further cyclic degradation experiments showed that ACCB-100 still retained a degradation efficiency of 88.62% after five cycles, indicating its excellent photocatalytic stability. Simultaneously, radical trapping experiments and ESR analyses demonstrated that h + , ·O 2 − , ·OH and SO 4 ·- were the active species involved in the photocatalytic degradation of NOR.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2017
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IF 6.216
Ying Liu,Jijie Kong,Julong Yuan,Wei Zhao,Xin Zhu,Cheng Sun,Jimin Xie
A novel ternary Ag/Ag 2 CO 3 /BiVO 4 plasmonic heterojunction photocatalyst was successfully fabricated by a precipitation method over BiVO 4 , followed by light reduction. The obtained composites were characterized by various measurements and the photocatalytic performances of the as-prepared composites were assessed by the degradation of tetracycline (TC) under visible-light illumination. The ternary plasmonic heterojunction photocatalyst exhibits higher and wider absorption in the visible and ultraviolet regions than the pure BiVO 4 and it displays superior performance in the degradation of tetracycline. The highest efficiency of Ag/Ag 2 CO 3 /BiVO 4 photocatalyst to degrade TC is up to 94.9% at 150 min. On the basis of the obtained experimental results, the probable photocatalytic mechanism of the enhanced activity is discussed. The degradation of tetracycline is not only influenced by OH, but also caused by valence-band holes (h + ). Therefore, the improved photocatalytic activity of Ag/Ag 2 CO 3 /BiVO 4 is due to the enhanced absorbance under the visible light, the facilitated charge transfer and the inhibited recombination of electron-hole pairs. The likely degradation pathway was proposed on the basis of the intermediate products detected by GC–MS. Moreover, the surface plasmon resonance and the electric field enhancement were simulated by the three dimensional finite difference time domain (FDTD) method.
研究领域:
环境科学
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材料科学
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高影响因子
OPTICAL MATERIALS
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2022
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IF 3.754
Pengfei Zhu,Shasha Zhang,Lisi Xie,Xingyang Xiao,Xiaolong Wu
A novel Bi 0 –Bi 4 Ti 3 O 12 /Ag 2 CO 3 composite photocatalyst with Z-type heterojunction was successfully synthesized. The best degradation rate of Bi 0 –Bi 4 Ti 3 O 12 /Ag 2 CO 3 for tetracycline hydrochloride (TC) can reach 89.03% under the optimized reaction conditions and its reaction rate constant was 0.01517 min −1 , 2.89 times that of pure Bi 4 Ti 3 O 12 . In addition, the catalyst showed a good universality to the other three antibiotics. The results of catalyst characterization showed that the enhanced photocatalytic activity of Bi 0 –Bi 4 Ti 3 O 12 /Ag 2 CO 3 was mainly due to the surface plasmon resonance (SPR) effect of reduction of Bi 3+ and the formation of heterojunction between Bi 0 –Bi 4 Ti 3 O 12 and Ag 2 CO 3 . Active species capture experiments and electron paramagnetic resonance (EPR) results showed that •O 2 ‾ and h + played a major role in the reaction process. The degradation pathway of TC by Bi 0 –Bi 4 Ti 3 O 12 /Ag 2 CO 3 was analyzed by Liquid Chromatography-Mass Spectrometry (LC-MS). Moreover, a possible electron transfer mechanism of Z-type heterojunction was deduced.
研究领域:
环境科学
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材料科学
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高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Wenping Yang,Wen Jiang,Yuan Deng,Ying Yu,Yue Tang,Yuangen Wu
Nanozymes have replaced natural enzymes in various biosensing applications. However, they still face certain challenges in terms of heterogeneous recognition, stability, and anti-interference capability, particularly in peroxidase-based biosensing. Herein, we constructed an oxidase-based biosensing platform leveraging the specific interaction of Ag S coordination for the rapid detection of dimethoate. Ag₂CO₃ nanoparticles synthesized via a low-temperature ion-exchange method exhibit oxidase-mimicking activity, enabling them to catalyze the oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to produce a blue oxidation product (oxTMB), which exhibits a characteristic absorption peak at 652 nm. Intriguingly, the presence of dimethoate significantly enhances this oxidase-like activity. The enhancement mechanism is attributed to the specific interaction between dimethoate molecules and the Ag₂CO₃ surface, which increases the exposure of catalytic sites and promotes the generation of reactive oxygen species (·O₂ − and 1 O₂). Based on this phenomenon, a novel colorimetric sensor was developed for dimethoate detection. The color intensity, deepening from light to dark blue with increasing dimethoate concentration (20–200 μg·L −1 ), allows for visual and spectrophotometric quantification with a detection limit of 10.5 μg·L −1 . Furthermore, a portable detection platform was established by integrating smartphone-based image analysis (using RGB values) for on-site quantitation. The method demonstrated high selectivity for dimethoate and was successfully applied to detect dimethoate residues in vegetables with satisfactory recovery rates (84.4%–95.7%). This cost-effective and instrument-free strategy shows great potential for the rapid on-site screening of pesticide residues.
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高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Wenxia Wang,Zhen Li,Han Wang,Hangyu Luo,Zhenbang Meng,Xiaofeng Liu,Lingyu Liu,Weirui Chen,Baosheng Jin,Kai Huang,Ri Chen,Qi He
Dual Z-scheme heterojunction with highly separation efficiency of photoinduced carriers and outstanding redox capability has received considerable attention and hold great promise for environmental remediation. Herein, magnetic dual Z-scheme g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 heterojunction was successfully constructed, and applied as a dual-function photocatalyst for tetracycline (TC) degradation and bacterial inactivation. The optimized g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 heterojunction exhibited excellent photocatalytic capacity for TC degradation with a rate constant of 0.0154 min −1 , which is 2.73, 3.08, and 2.92 times higher compared to that of the g-C 3 N 4 , ZnFe 2 O 4 , and g-C 3 N 4 /ZnFe 2 O 4 , respectively. Impressively, the g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 -1.25 heterojunction displayed satisfying activity within a wider range of pH (3.0–9.0), TC concentration (5–25 mg L −1 ), and with the addition of various anions including Cl - , HCO 3 - , SO 4 2- , and NO 3 - . Meanwhile, 6.5-log of Escherichia coli cells could also be inactivated by g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 -1.25 heterojunction under visible light. Mechanism exploration based on trapping experiment, electron paramagnetic resonance (EPR) analysis, and liquid chromatography-mass spectrometer (LC-MS) indicated that the improved photocatalytic performance resulted from the synergetic effect of semiconductors and constructed dual Z-scheme heterojunction, which significantly promotes charge separation rate and endows strong redox capacity. As expected, the toxicity of TC degradation intermediates was reduced according to the Toxicity estimation analysis based on a quantitative structure activity relationships (QSAR) method. Further, the g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 heterojunction also demonstrated magnetic separation property and satisfactory photocatalytic stability even after 4 cycles. This work offers a new perspective on constructing novel magnetic dual Z-scheme heterojunction with dual-function photocatalytic properties and is of significance for water remediation.
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高影响因子
Food Bioscience
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2026
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IF 6.2
Zhongqin Li,Jiazhen Shi,Yinghua Song,Yue Tang,Lian Xia,Yuangen Wu
Butylated hydroxyanisole (BHA) is a synthetic phenolic antioxidant widely used in edible oils and fat-containing foods. Excessive BHA poses significant risks to human health, thus making rapid and sensitive detection of BHA crucial for health protection. Herein, the Ag 2 CO 3 nanozyme was prepared by the simple precipitation method, which exhibits both laccase-mimic and oxidase-mimic activities. It was found that the oxidase-mimic activity of Ag 2 CO 3 facilitated the conversion of TMB to its blue oxidized form (oxTMB), and subsequent addition of BHA resulted in the formation of a characteristic purple adduct. Additionally, BHA effectively suppressed the laccase-mimic activity of the Ag 2 CO 3 nanozymes. Therefore, a novel colorimetric sensor was constructed using the dual-enzyme-mimic activities as a sensing signal for rapidly detecting BHA in edible oil. The colorimetric sensor achieves limits of detection (LOD) for BHA as low as 1.1 μM in the laccase-mimic channel and 0.08 mM in the oxidase-mimic channel, both of which are substantially lower than the maximum permissible BHA level in edible oils stipulated in Chinese National Food Safety Standard GB 2760. The sensor developed in this work shows great promise for application in the field of edible oil detection.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Xiaoyu Xu,Rui Wang,Jun Wang,Zhao Liu,Tingzhi Liu
Z-scheme Ag 3 PO 4 /AgI composites were synthesized by facile in-situ anion-exchange method at room temperature (RT). All the catalysts have excellent affinity to dyes and adsorb larger than 70 % of Methyl blue. The fastest adsorption equilibrium of Ag 3 PO 4 ( q e : 25.9278 mg/g) with low specific surface area (SSA: 4.6624 m 2 /g) can be rapidly attained for 6 min. The best color removal efficiency (RE) for Methyl blue over all the composites can rapidly increase to 100 % within 45 min. Meanwhile, the highest RE for RhB over S3 is 98.9 % for 60 min, and corresponding rate constant ( k ) is 0.07018 min −1 . After adding NaCl or Na 2 CO 3 into sonocatalysis, because of the formation of novel ternary AgCl/Ag 3 PO 4 /AgI and Ag 2 CO 3 /Ag 3 PO 4 /AgI during sonocatalytic process, the best REs for RhB over S3 composite increase from 89.8 % (no scavenger) to 98.2 % (1.2 mM NaCl), or to 97.6 % (1.8 mM Na 2 CO 3 ) for 30 min, respectively, and the REs for Methyl blue over S3 are about 100 % for 10 min. From single Ag 3 PO 4 to binary Ag 3 PO 4 /AgI, and to ternary Ag 2 CO 3 /Ag 3 PO 4 /AgI or AgCl/Ag 3 PO 4 /AgI, REs are significantly enhanced. New redox energy bands and charge transfer channels lead to efficiently spatial charge separation and further activation of hole ( h + ), superoxide anions (·O 2 − ), hydroxyl radicals (·OH). Additionally, the relation among oxygen vacancies (O v ), Zeta potential and RE was discussed in detail. Density functional theory (DFT) calculations were used to make clear charge transfer and sonocatalytic mechanism. The evaluation of used samples, adsorption kinetics and modes, diverse degradation pathways and sonocatalytic mechanisms were also discussed in detail. The work provides a novel in-situ strategy for real-time control of catalytic performance by rapidly forming new phase during catalysis at RT. Furthermore, the strategy obviously facilitates real-time development of rare more than ternary composites for enhanced catalytic performance.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
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