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学者姓名：董永强
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Abstract ：
A simple method for one-step synthesis of aggregated gold nanoparticles (a-AuNPs) using single-layer carbon dots (s-CDs) as the capping agents has been proposed. The obtained a-AuNPs are mainly composed of several spherical AuNPs of 20-25 nm sized, which aggregate to form nanogaps of similar to 1 nm. Furthermore, the obtained aAuNPs produce a strong localized surface plasmon resonance (LSPR) absorption band centered at around 640 nm, which is quite close to the wavelength of the commonly used 633 nm laser in surface enhanced Raman scattering (SERS). Thus, under the irradiation of 633 nm laser, a lot of electromagnetic field "hot spots" are formed at around the nanogaps, and strong SERS activity is achieved. The obtained a-AuNPs are dropped on tinfoil wafers to fabricate SERS substrates, which show the advantages of high sensitivity, fast response, good repeatability and satisfactory stability. On the basis, a sensitive SERS sensor is developed to detect malachite green in aquaculture water, with a low detection limit of 1 x 10(-9) mol/L.
Keyword ：
Aggregated gold nanoparticles Aggregated gold nanoparticles Localized surface plasmon resonance Localized surface plasmon resonance Malachite green Malachite green Plasmonic hotspots Plasmonic hotspots Surface enhanced Raman scattering Surface enhanced Raman scattering
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| GB/T 7714 | Zhou, Yongcong , Zhang, Jingwen , Lai, Xiaojing et al. Aggregated gold nanoparticles rich in electromagnetic field "hotspots " for surface enhanced Raman scattering [J]. | TALANTA , 2025 , 282 . |
| MLA | Zhou, Yongcong et al. "Aggregated gold nanoparticles rich in electromagnetic field "hotspots " for surface enhanced Raman scattering" . | TALANTA 282 (2025) . |
| APA | Zhou, Yongcong , Zhang, Jingwen , Lai, Xiaojing , Chen, Yiquan , Fu, Fengfu , Lin, Zhenyu et al. Aggregated gold nanoparticles rich in electromagnetic field "hotspots " for surface enhanced Raman scattering . | TALANTA , 2025 , 282 . |
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For the first time, single-layer carbon dots (CDs) were used as capping agents to synthesize cuprous oxide nanosheets (Cu2O-NSs) as a high-performance surface enhanced Raman scattering (SERS) substrate, emphasizing their chemical enhancement mechanism. The Cu2O-NSs, synthesized using single-layer carbon dots as capping agents, exhibit uniform morphology and remarkable SERS activity, achieving an enhancement factor of 4.97 x 105 for crystal violet under 532 nm laser excitation. The SERS enhancement is primarily attributed to photoinduced charge transfer between the Cu2O-NSs and analyte molecules, as confirmed by energy-level alignment studies. The substrate demonstrates excellent signal homogeneity, batch-to-batch reproducibility, and long-term stability, with no significant signal attenuation over 60 days. These findings underscore the potential of Cu2O-NSs as a cost-effective and stable SERS substrate, with promising applications in chemical sensing and molecular detection.
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| GB/T 7714 | Zhong, Hao , Lin, Zhenyu , Dong, Yongqiang . Cu2O nanosheets via facile one-pot synthesis: high-performance SERS substrate with chemical enhancement for environmental sensing [J]. | NEW JOURNAL OF CHEMISTRY , 2025 , 49 (16) : 6659-6665 . |
| MLA | Zhong, Hao et al. "Cu2O nanosheets via facile one-pot synthesis: high-performance SERS substrate with chemical enhancement for environmental sensing" . | NEW JOURNAL OF CHEMISTRY 49 . 16 (2025) : 6659-6665 . |
| APA | Zhong, Hao , Lin, Zhenyu , Dong, Yongqiang . Cu2O nanosheets via facile one-pot synthesis: high-performance SERS substrate with chemical enhancement for environmental sensing . | NEW JOURNAL OF CHEMISTRY , 2025 , 49 (16) , 6659-6665 . |
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A simple one-pot method is developed to prepare positively charged aggregated silver nanoparticles (a-AgNPs). The obtained a-AgNPs show strong localized surface plasmon resonance (LSPR) absorption, whose wavelength can be easily tuned to match the commonly used lasers in surface enhanced Raman scattering (SERS). Furthermore, the obtained a-AgNPs can be easily fabricated into paper-based SERS chips by filtering against a negatively charged filter membrane. On the basis, a convenient SERS sensor has been developed for the detection of thiram using a 785 nm handheld Raman spectrometer.
Keyword ：
Aggregated AgNPs Aggregated AgNPs Paper-based chips Paper-based chips Positively charged Positively charged SERS SERS Thiram Thiram
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| GB/T 7714 | Lin, Wei , Liu, Zesong , Zhang, Jingwen et al. Paper-based SERS chips for the rapid detection of thiram [J]. | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2025 , 332 . |
| MLA | Lin, Wei et al. "Paper-based SERS chips for the rapid detection of thiram" . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 332 (2025) . |
| APA | Lin, Wei , Liu, Zesong , Zhang, Jingwen , Xu, Jinhua , Fu, Fengfu , Lin, Zhenyu et al. Paper-based SERS chips for the rapid detection of thiram . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2025 , 332 . |
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The current surface-enhanced Raman scattering (SERS) substrates typically feature a single energy level, posing challenges in coordinating electromagnetic enhancement (EM) and chemical enhancement (CM), thereby limiting the sensitive detection of numerous crucial target molecules. In this study, novel aggregated nanorings (a-NRs) hybridizing Ag, Au and AgCl are constructed as SERS substrates. On one hand, the obtained a-NRs exhibit robust localized surface plasmon resonance absorption, whose wavelength can be tuned to match three commonly used laser wavelengths (532, 633 and 785 nm) to gain strong EM effect. On the other hand, these materials possess the Fermi levels of Au nanoparticles and Au/Ag alloy, in addition to the valence band and conduction band of AgCl. The abundant energy levels of the obtained a-NRs facilitate increased charge transfer opportunities for molecules, leading to a strong CM effect. Therefore, the obtained a-NRs show ultra-high SERS sensitivity towards numerous molecules. Moreover, the unique chemical composition makes the obtained a-NRs have good long-term stability in terms of SERS activity. Besides providing high-performance SERS substrates, the valuable experience for coordinating EM and CM to construct highly active SERS substrate demonstrated in this work are expected to significantly advance the application of SERS.
Keyword ：
Chemical enhancement Chemical enhancement Electromagnetic enhancement Electromagnetic enhancement Energy-level rich Energy-level rich Gold Gold SERS SERS Silver Silver Silver chloride Silver chloride
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| GB/T 7714 | Hu, Rongjing , Fu, Shilan , Zhou, Yongcong et al. Energy-level rich nanorings hybridizing Ag, Au and AgCl as high-performance SERS substrate for numerous molecules [J]. | TALANTA , 2025 , 286 . |
| MLA | Hu, Rongjing et al. "Energy-level rich nanorings hybridizing Ag, Au and AgCl as high-performance SERS substrate for numerous molecules" . | TALANTA 286 (2025) . |
| APA | Hu, Rongjing , Fu, Shilan , Zhou, Yongcong , Lin, Zhenyu , Fu, Fengfu , Dong, Yongqiang . Energy-level rich nanorings hybridizing Ag, Au and AgCl as high-performance SERS substrate for numerous molecules . | TALANTA , 2025 , 286 . |
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Abstract ：
A simple method is developed for the direct synthesis of aggregated silver nanoparticles (a-AgNPs), which show strong and wavelength-tunable localized surface plasmon resonance (LSPR). Three a-AgNPs (532-a-AgNPs, 633-a-AgNPs and 787-a-AgNPs) exhibiting the maximum LSPR wavelength coinciding well with those of lasers commonly used in SERS detection (532, 633 and 785 nm) are obtained. Thus, the three a-AgNPs possess abundant plasmonic hotspots under the irradiation of corresponding laser. Moreover, the three a-AgNPs show robust stability in water, and can be developed into liquid substrates directly for SERS determination. All the three substrates (532-sub, 633-sub, and 787-sub) show excellent SERS activity to 4-mercaptobenzoic acid (4-MBA) due to the synergistic effect of strong electromagnetic enhancement (EM) and chemical enhancement (CM) effects. The obtained 787-sub is further applied for the determination of thiram in juices. The low detection limit of 10 ppb and outstanding recoveries of 91.75–109.92 % suggest substantially the reliability and practicality of the developed SERS substrates in food safety detection. © 2025 Elsevier B.V.
Keyword ：
Laser safety Laser safety Metal nanoparticles Metal nanoparticles Silver nanoparticles Silver nanoparticles Surface plasmon resonance Surface plasmon resonance
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| GB/T 7714 | Hu, Rongjing , Zeng, Chenyi , Zhang, Jingwen et al. Stable aggregated silver nanoparticle in water with strong and wavelength-tunable localized surface plasmon resonance for liquid-state SERS substrates [J]. | Journal of Molecular Liquids , 2025 , 424 . |
| MLA | Hu, Rongjing et al. "Stable aggregated silver nanoparticle in water with strong and wavelength-tunable localized surface plasmon resonance for liquid-state SERS substrates" . | Journal of Molecular Liquids 424 (2025) . |
| APA | Hu, Rongjing , Zeng, Chenyi , Zhang, Jingwen , Xu, Jinhua , Pan, Cheng , Lin, Zhenyu et al. Stable aggregated silver nanoparticle in water with strong and wavelength-tunable localized surface plasmon resonance for liquid-state SERS substrates . | Journal of Molecular Liquids , 2025 , 424 . |
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Tebuconazole is one of the most commonly used fungicides in agricultural production, that has the merits of highly effectiveness, broad spectrum and systemic function. Excessive tebuconazole may pose a great threat to human and animal health. Traditional detection techniques for tebuconazole usually have limitations such as expensive equipment, poor antibody stability, and time-consuming procedures. Herein, a sensitive sensor is developed for the rapid detection of tebuconazole based on hydrogel surface-enhanced Raman scattering (SERS) chips. Aggregated Ag nanoparticles (a-AgNPs) with tunable localized surface plasmon resonance (LSPR) wavelength are in-situ synthesized in polyvinyl alcohol (PVA) solution for preparing hydrogel SERS chips. Three hydrogel SERS chips are obtained to match the three commonly used laser wavelengths. On the basis, a match laser wavelength is selected according to the energy levels of tebuconazole and the Fermi level of a-AgNPs to gain a strong chemical enhancement. At the same time, the chip with a corresponding LSPR wavelength to the laser is applied to obtain a strong electromagnetic enhancement. Thus, highly sensitive SERS signal of tebuconazole is obtained. Furthermore, the obtained hydrogel SERS chips have good repeatability, outstanding reproducibility and strong anti-interference ability, and show outstanding reliability in practical applications. As a result, the SERS chips offer a reliable and convenient platform for the quick detection of tebuconazole in foods. The detection limit is as low as 1 ppb, and the recoveries is distributed in the range of 94.66-106.70 %. This work would promote greatly the application of SERS in small molecule detection.
Keyword ：
Aggregated AgNPs Aggregated AgNPs PVA hydrogel PVA hydrogel Surface-enhanced Raman scattering Surface-enhanced Raman scattering Tebuconazole Tebuconazole Tunable localized surface plasmon resonance Tunable localized surface plasmon resonance
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| GB/T 7714 | Chen, Mingming , Lai, Xiaojing , Su, Bihang et al. Rapid detection of tebuconazole based on hydrogel SERS chips [J]. | TALANTA , 2024 , 277 . |
| MLA | Chen, Mingming et al. "Rapid detection of tebuconazole based on hydrogel SERS chips" . | TALANTA 277 (2024) . |
| APA | Chen, Mingming , Lai, Xiaojing , Su, Bihang , Jiang, Xiancai , Xu, Jinhua , Fu, Fengfu et al. Rapid detection of tebuconazole based on hydrogel SERS chips . | TALANTA , 2024 , 277 . |
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Abstract ：
Maleic hydrazide (MH) is a commonly used plant growth regulator and herbicide. However, due to its potential mutagenicity, carcinogenicity, genotoxicity, and cytotoxicity, sensitive and rapid detection of MH residues in foods is crucial. Herein, a sensitive and reliable surface-enhanced Raman scattering (SERS) sensor for MH based on a self-constructed hydrogel SERS platform is proposed for the first time. The used hydrogel SERS chips contain aggregated Ag nanoparticles (a-AgNPs). Under the irradiation of 785 nm laser, the a-AgNPs provide a large quantity of plasmonic hots to produce strong electromagnetic enhancement. Thus, strong SERS signal of MH can be gained on the hydrogel SERS platform. In addition, the unique network structure of hydrogel greatly improves the anti-interference ability to the complex sample matrix. As a result, the developed SERS sensor for MH shows the advantages of high sensitivity (a low detection limit of 50 ppb), fast response (10 min), and high selectivity. The reliability of the sensor is supported by the satisfactory recoveries of 92.80 - 105.6 % in actual samples (tea and potato). The constructed SERS sensor provides a promising approach for rapid on-site testing of MH residues.
Keyword ：
aggregated Ag nanoparticle aggregated Ag nanoparticle Hydrogel Hydrogel Maleic hydrazide Maleic hydrazide Surface-enhanced Raman scattering Surface-enhanced Raman scattering
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| GB/T 7714 | Fu, Xiaolong , Su, Bihang , Xu, Jinhua et al. Rapid detection of maleic hydrazide based on the hydrogel SERS platform [J]. | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2024 , 325 . |
| MLA | Fu, Xiaolong et al. "Rapid detection of maleic hydrazide based on the hydrogel SERS platform" . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 325 (2024) . |
| APA | Fu, Xiaolong , Su, Bihang , Xu, Jinhua , Pan, Cheng , Huang, Shuping , Fu, Fengfu et al. Rapid detection of maleic hydrazide based on the hydrogel SERS platform . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2024 , 325 . |
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The chemical enhancement of semiconductor-based surface-enhanced Raman scattering (SERS) substrates is an exciting hot topic. Herein, a simple hydrothermal method is developed to prepare molybdenum disulfide (MoS2), which can be easily exfoliated into monolayer nanosheets (MoS(2)NSs) by sonication, even in the absence of any surfactant. The obtained MoS(2)NSs contain two types of defects, namely, one caused by the incorporation of Mo atoms of high valence states and one caused by the incorporation of S-2(2-). The density of the two types of defects can be easily tuned by controlling the ratio of Na2S and Na2MoO4 in the raw materials. The unique properties and the clear surface make the obtained MoS(2)NSs ideal models to investigate the effect of defects on the SERS activity of MoS2. It is found that the SERS activity of the obtained MoS(2)NSs increases dramatically with the defects caused by Mo atoms of high valence states, while it first increases and then decreases with the increase of defects caused by S-2(2-). On the basis, MoS(2)NSs with high SERS activity and a low detection limit of 5.0 x 10(-9) mol/L toward crystal violet (CV) are obtained. Moreover, the mechanism of defects affecting the SERS activity of MoS(2)NSs is revealed. The defects on one hand provide a large amount of dangling bonds that can combine CV molecules to form MoS2NS-CV complex and on the other hand provide extensive induced local dipoles and enhance the overall SERS spectrum of CV.
Keyword ：
chemical enhancement chemical enhancement crystal violet crystal violet defects defects molybdenum disulfidenanosheets molybdenum disulfidenanosheets surface-enhanced Raman scattering surface-enhanced Raman scattering
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| GB/T 7714 | Fu, Xiaolong , Wu, Huiying , Liu, Zhihong et al. MoS2 Nanosheets as Substrates for SERS-Based Sensing [J]. | ACS APPLIED NANO MATERIALS , 2024 , 7 (4) : 3988-3996 . |
| MLA | Fu, Xiaolong et al. "MoS2 Nanosheets as Substrates for SERS-Based Sensing" . | ACS APPLIED NANO MATERIALS 7 . 4 (2024) : 3988-3996 . |
| APA | Fu, Xiaolong , Wu, Huiying , Liu, Zhihong , Wang, Pengzhao , Rong, Jiefeng , Fu, Fengfu et al. MoS2 Nanosheets as Substrates for SERS-Based Sensing . | ACS APPLIED NANO MATERIALS , 2024 , 7 (4) , 3988-3996 . |
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T-2 toxin is one of the naturally dangerous food contaminants, which is harmful to people and animals. Because of its strong toxicity and wide distribution, it is vital to develop a rapid and effective method for the detection of T-2 toxin. Herein, an excellent hydrogel surface-enhanced Raman scattering (SERS) chip is constructed for developing a novel SERS sensor to detect T-2 toxin using a portable Raman spectrometer. The SERS chip is prepared by in-situ Ca2+-mediated assembly of silver nanoparticles (AgNPs) in PVA solution, followed by a physical crosslinking possess. The assembled AgNPs produces a strong localized surface plasmon resonance (LSPR) at around 532 nm, which enables the high activity of SERS chip under the irradiation of 532 nm laser. Additionally, the unique structure of hydrogel makes the obtained chip show excellent reliability and anti-interference ability in detection. As a result, the developed SERS sensor shows many obvious advantageous including free of complex sample pretreatment (only a simple extraction), fast response (5 min), low limit of detection (0.41 ppb), wide detection range (1-10000 ppb), good recoveries (90.26-101.81 %) and relative standard deviations (2.8-6.7 %). Therefore, this SERS sensor provides a promising choice for rapid scanning and sensitive detection of trace T-2 toxin in complex matrices.
Keyword ：
High sensitivity High sensitivity Hydrogel SERS chip Hydrogel SERS chip Portable detection Portable detection Strong anti-interference Strong anti-interference T-2 toxin T-2 toxin
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| GB/T 7714 | Chen, Mingming , Su, Bihang , Wu, Huiying et al. Hydrogel SERS chip with strong localized surface plasmon resonance for sensitive and rapid detection of T-2 toxin [J]. | TALANTA , 2023 , 268 . |
| MLA | Chen, Mingming et al. "Hydrogel SERS chip with strong localized surface plasmon resonance for sensitive and rapid detection of T-2 toxin" . | TALANTA 268 (2023) . |
| APA | Chen, Mingming , Su, Bihang , Wu, Huiying , Dai, Yawen , Chen, Tianwen , Fu, Fengfu et al. Hydrogel SERS chip with strong localized surface plasmon resonance for sensitive and rapid detection of T-2 toxin . | TALANTA , 2023 , 268 . |
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Porous hydrogel incorporated with the photothermal conversion materials has been the key component of the interfacial solar evaporation device. However, the preparation of high-performance porous hydrogel for the interfacial solar evaporation device still existed some limitation, like the widely available and cheap photothermal conversion material, the ease and scalability of porous structure construction in the hydrogel. In this work, a porous biomass-derived hydrogel evaporator with interconnected pore structure were developed via the simple and effective foaming-freezing-crosslinking three-step method using sodium alginate and poly(vinyl alcohol) as matrix materials and commercial graphite as the photothermal material. It has excellent photothermal conversion and water transport capabilities, with an evaporation rate of 3.15 kg m-2h- 1 and an evaporation efficiency of 91 % at a solar irradiation intensity of 1 kW m- 2. The evaporator also has excellent salt rejection performance due to its unique porosity. The evaporator shows good stability and long-term durability when evaporating in brine cycles. This easily prepared, inexpensive and biocompatible hydrogel evaporator has great potential in the field of solar desalination.
Keyword ：
Desalination Desalination Hydrogel Hydrogel Pore design Pore design Salt resistance Salt resistance Solar vapor generation Solar vapor generation
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| GB/T 7714 | Yang, Mohan , Zhang, Lei , Ye, Dezhan et al. Facile preparation of sodium alginate/poly(vinyl alcohol)/graphite hybrid porous hydrogel for efficient solar desalination [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 480 . |
| MLA | Yang, Mohan et al. "Facile preparation of sodium alginate/poly(vinyl alcohol)/graphite hybrid porous hydrogel for efficient solar desalination" . | CHEMICAL ENGINEERING JOURNAL 480 (2023) . |
| APA | Yang, Mohan , Zhang, Lei , Ye, Dezhan , Dong, Yongqiang , Zhan, Yanhu , Jiang, Xiancai . Facile preparation of sodium alginate/poly(vinyl alcohol)/graphite hybrid porous hydrogel for efficient solar desalination . | CHEMICAL ENGINEERING JOURNAL , 2023 , 480 . |
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