JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Bing Wang,Yao Liu,Zhuo Li,Hong Hao,YuZhen Zhao,ZeMin He,WenQi Song,EnZhou Liu,Bo Zhou,XiaoXun Ma,Zongcheng Miao
Leveraging the synergistic combination of dipole modulation and localized surface plasmon resonance effects (LSPR) effects offers a promising solution to address the low carrier separation efficiency observed at traditional Type-III heterojunction interfaces. Herein, a derivative of SubPc-4 with a high dipole moment of 7.25 Debye was successfully synthesized by introducing carbonyl functional groups axially into the parent subphthalocyanine. Silver metal was introduced during the preparation of Ag 3 PO 4 through light irradiation, and the organic supramolecule SubPc-4 self-assembled on the Ag 3 PO 4 semiconductor surface via van der Waals forces and π-π stacking interactions, forming a binary heterojunction SubPc-4/Ag 3 PO 4 with LSPR effects. Under 30 minutes of visible light irradiation, the degradation efficiencies of tetracycline and oxytetracycline by the SubPc-4/Ag 3 PO 4 supramolecular nanoarray were 88.29% and 90.20%, respectively. DFT and TDDFT calculations, combined with experimental characterization data, indicate that the LSPR supramolecular array exhibits excellent activity and stability, primarily attributed to the improved carrier separation capability at the SubPc-4/Ag 3 PO 4 interface. This work highlights the potential of combining dipole modulation and LSPR technology to enhance the performance of Type-III heterojunction photocatalysts.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Boyuan Tu,Kaifu Yu,Dengjiang Fu,Li Zhou,Ruixiang Wang,Xinying Jiang,Huanhuan Liu,Xin Cao,Xiang Gong,Rong He,Yongjian Tang,Tao Chen,Wenkun Zhu
Photo-assist uranium extraction from fluorine-containing uranium wastewater by building semiconductor-plasma material heterostructure is a forward-looking strategy, which not only effectively accelerates F-U separation via the LSPR effect but also impacts the intensity of binding between U (VI) and site. Here, we developed an amino-rich Ag-NWs/NH 2 -MIL-125(Ti) (AgNW/N-M(Ti)) hybrid nanowires with LSPR effect for photo-assist uranium extraction. Accordingly, the AgNW/N-M(Ti) hybrid nanowires presented 90.4% removal efficiency for U(VI) without a sacrificial agent at the U: F molar ratio of 1:20. By virtue of In-situ KPFM, we identify hot electrons generated over AgNW were transferred to amino-rich N-M(Ti) to efficiently reduce the U(VI) adsorbed on the N-M(Ti), which effectively enhances the excellent uranium removal performance of AgNW/N-M(Ti) hybrid nanowires. This strategy may open a paradigm for the development of advanced heterojunctions with the LSPR effect as catalysts for photo-assisted uranium extraction from fluorine-containing uranium wastewater.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2020
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IF 6.146
Jinjun Peng,Jun Shen,Xiaohui Yu,Hua Tang,Zulfiqar,Qinqin Liu
Plasmonic nonmetal semiconductors with localized surface plasmon resonance (LSPR) effects possess extended light-response ranges and can act as highly efficient H 2 generation photocatalysts. Herein, an LSPR-enhanced 0D/2D CdS/MoO 3− x heterojunction has been synthesized by the growth of 0D CdS nanoparticles on 2D plasmonic MoO 3− x elliptical nanosheets via a simple coprecipitation method. Taking advantage of the LSPR effect of the MoO 3− x elliptical nanosheets, the light absorption of the CdS/MoO 3− x heterojunction was extended from 600 nm to the near-infrared region (1400 nm). Furthermore, the introduction of 2D plasmonic MoO 3− x elliptical nanosheets not only provided a platform for the growth of CdS nanoparticles, but also contributed to the construction of an LSPR-enhanced S-scheme structure due to the interface between the MoO 3− x and CdS, accelerating the separation of light-induced electrons and holes. Therefore, the CdS/MoO 3− x heterojunction exhibited higher photocatalytic H 2 generation activity than pristine CdS under visible light irradiation, including under 420, 450, 550, and 650 nm monochromic light, as well as improved photo-corrosion performance.
研究领域:
材料科学
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光催化
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DOI
高影响因子
RSC Advances
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2021
·Vol. 11
·期 37
·22744-22750
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IF 3.361
Qi Qu,Jing Wang,Chuan Zeng,Mengfan Wang,Wei Qi,Zhimin He
Owing to the high sensitivity, fast responsiveness and high specificity, immunoassays using surface-enhanced Raman scattering (SERS) as the readout signal displayed great potential in disease diagnosis. In this study, we developed a SERS-immunoassay method for the detection of human immunoglobulin G (HIgG). Upon involving well-ordered AuA on a SERSIA substrate, the LSPR effect was further enhanced to generate a strong and uniform Raman signal through the formation of sandwich structure with the addition of target HIgG and SERSIA tag. Optimization of the assay provided a wide linear range (0.1–200 μg mL−1) and low limit of detection (0.1 μg mL−1). In addition, the SERS-immunoassay method displayed excellent specificity and was homogeneous, which guaranteed the practical use of this method in the quantitative detection of HIgG. To validate this assay, human serum was analysed, which demonstrated the potential advantages of SERS-immunoassay technology in clinical diagnostics.
研究领域:
生物医学工程
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分析化学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
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IF 6.9
Qiyue Jia,Hongyu Gao,Wenling Du,Jiaxin Bai,Mei Li,Jiansheng Liu,Zhanli Chai
Expediting the separation and transfer of photogenerated carriers is crucial for plasmonic materials to improve the performance of photocatalysts. However, it remains a significant challenge to strengthen the local surface plasma resonance (LSPR) through the modulation of surface functional groups. Herein, Ti 3 C 2 T x MXene is combined with two typical semiconductor materials to form Ti 3 C 2 T x /CdS (TCS) with dominated surface O x groups and Ti 3 C 2 T x /C 3 N 4 (TCN) with surface-terminated F x species. The obtained TCS composite shows a higher photocatalytic performance (96.7 %) than TCN (86.7 %) and the corresponding bare catalysts in the degradation of tetracycline within 60 min under visible-light irradiation. Moreover, the degradation rate of Ti 3 C 2 T x /CdS composite decreases by only 2.3 % after 4 cycles photocatalytic process, which is more stable than Ti 3 C 2 T x /C 3 N 4 (3.3 %) and CdS (39.3 %). The improved photocatalytic activity and stability mainly result from the enhanced LSPR effect of Ti 3 C 2 T x MXene. In particular, the better performance of TCS compared to TCN indicates that the LSPR effect is highly related to the surface-terminated [O]/[F] ratio. These results directly provide a strategy to enhance the electric field dynamics of MXene materials for improving photocatalytic performance.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
IEEE SENSORS JOURNAL
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2024
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IF 4.3
Zhenpeng Men,Lucan Xiao,Ragini Singh,Bingyuan Zhang,Santosh Kumar
In this work, a sensitive and portable fiber-optic WaveFlex biosensor is developed for the detection of paraoxon pesticide in agricultural products. A combination of simulation and experiment is used to analyze the distribution of the evanescent field in optical fiber. The flexible W-shaped optical fiber biosensor (OFB) based on localized surface plasmon resonance (LSPR) effect is developed, also known as WaveFlex biosensor. Gold nanoparticles (AuNPs) were immobilized on the surface of the optical fiber probe to successfully excite the LSPR phenomenon. In addition, in order to modify the optical fiber probe, cerium dioxide nanorods (CeO2-NRs) and tungsten disulfide quantum dots (WS2-QDs) were functionalized. It is used to enhance the biocompatibility of the sensor and increase the specific surface area of the fiber probe. The enzymatic determination of organophosphorus pesticides (OPs) is usually based on cholinesterase and organophosphorus hydrolase. Paraoxon has an irreversible inhibitory effect on butyrylcholinesterase. The content of paraoxon was detected by the inhibitory effect of paraoxon on butyrylcholinesterase. The reproducibility, reusability, stability, selectivity, and pH tests of the W-shaped WaveFlex sensor and its application in real samples are evaluated using different concentrations of paraoxon solution. The linear range of the sensor is 0– $100~\mu $ g/mL, and the limit of detection (LoD) is $7.999~\mu $ g/mL. The sensitivity is as high as 0.0312 nm/( $\mu $ g/mL), which verifies that the sensor provides an indispensable technology, cost-effective and portable solution for paraoxon-specific detection.
研究领域:
环境科学
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生物传感技术
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农业科学
✓ 已验证
DOI
高影响因子
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
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2025
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IF 5.9
Zhenpeng Men,Ragini Singh,Bingyuan Zhang,Santosh Kumar
In this paper, we introduce a seven-core tapered optical fiber biosensor with high sensitivity for label-free detection of paraoxon compounds that utilizes the localized surface plasmon resonance (LSPR) effect. By its unique circle-M-circle (CMC) structure surrounding the fiber surface, it achieves an obvious amplification of evanescent field at the sensor and improves sensitivity greatly. Finally, the optimized tapered shape enhances surface plasmon light interaction and hence increases sensitivity to low concentrations of paraoxon residues. Since gold nanoparticles (AuNPs) are used as an active probe for surface modification, the optical properties of Au make them have a good LSPR effect. We also employ, as auxiliary materials, tungsten disulfide (WS2) thin layers and ZnO nanowires (NWs), of which the biocompatibility advantage can reinforce together with stability for detection probes to the WaveFlex sensor. The results of the experiment show a high sensitivity for detecting paraoxon residues in agricultural products: 33.8 ng/mL and a detection limit of 6.83 μg/mL. The developed biosensor enables portability through miniaturization and also maintains its performance stability in various environmental conditions, which can be considered a powerful tool for field monitoring of paraoxon to enhance both environmental and food safety assessments. The sensor has shown favorable practical applicability due to at least desirable selectivity and repeatability. The CMC-like optical fiber-based WaveFlex biosensor being developed based on LSPR detection represents a great progress of sensor-based technology for environmental monitoring with wide application scenarios, which serves as an efficient and effective surveillance mechanism for point-of-sampling detection to the timely-onset paraoxon analysis.
研究领域:
环境科学
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生物传感技术
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食品安全
✓ 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）