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学者姓名：游力军
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Abstract ：
To enable the widespread application of surface-enhanced Raman scattering (SERS) technique in practical sensing of organic pollutants, it is essential to develop a reliable SERS substrate that offers both high sensitivity and reusability. In this study, we employed a simple and rapid in-situ deposition method to coat Ag nanoparticles onto flower-like Ni(OH)2 spheres, resulting in the formation of Ni(OH)2/Ag composites with excellent photocatalytic performance and SERS activity. These composites were used as a promising SERS analysis tool for effective detection of organic pollutants, including ciprofloxacin hydrochloride (CIP) and methylene blue (MB). Notably, the composites exhibited outstanding detection limits of 10-8 M for MB and 10-7 M for CIP, respectively, and showed a strong linear relationship between SERS intensities and the logarithmic concentration (R2 & GE; 0.97). Moreover, under simulated sunlight irradiation, the Ni(OH)2/Ag composites efficiently degraded MB and CIP molecules within a short period of 120 min for MB and 130 min for CIP. This demonstrated their practical reusability, as evidenced by their consistent performance over five cycles of SERS sensing. These findings underscore the significant potential of these composites for SERS-based detection of trace pollutants and ecological restoration through photocatalytic reactions in the future.
Keyword ：
In-situ monitoring In-situ monitoring Organic pollutants Organic pollutants Photocatalytic degradation Photocatalytic degradation Recyclable sensing Recyclable sensing SERS SERS
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| GB/T 7714 | Wen, Xiaojun , Cheng, Huan , Zhang, Weilong et al. Multifunctional Ni(OH)2/Ag composites for ultrasensitive SERS detection and efficient photocatalytic degradation of ciprofloxacin and methylene blue [J]. | TALANTA , 2024 , 266 . |
| MLA | Wen, Xiaojun et al. "Multifunctional Ni(OH)2/Ag composites for ultrasensitive SERS detection and efficient photocatalytic degradation of ciprofloxacin and methylene blue" . | TALANTA 266 (2024) . |
| APA | Wen, Xiaojun , Cheng, Huan , Zhang, Weilong , You, Lijun , Li, Jumei . Multifunctional Ni(OH)2/Ag composites for ultrasensitive SERS detection and efficient photocatalytic degradation of ciprofloxacin and methylene blue . | TALANTA , 2024 , 266 . |
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Conductive hydrogels as promising candidates of wearable electronic have attracted considerable interest in health monitoring, multifunctional electronic skins, and human-machine interfaces. However, to simultaneously achieve excellent electrical properties, long-term stability, and water vapor permeability of conductive hydrogels remains a challenge. Herein, a highly conductive hydrogel (MPRS) with high breathability (5.90 mg.cm(-2).h(-1)), excellent electrical conductivity (6.67 S/m), high elongation (315%), and remarkable water retention properties was prepared adopting cold freeze-thawing method. MXene, poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT: PSS), and reduced graphene oxide were used as conductive materials, while silk fibroin (SF) and polyvinyl alcohol (PVA) were used as the gel matrix. Lithium chloride solution was used as a solvent during the preparation process. The strain sensor based on this hydrogel demonstrates rapid response (0.33 s) and recovery ability (0.31 s) to strain stimuli. Upon 250 cycles of stretching at 35% strain, the output signal remains stable and highly repeatable, ensuring accurate detection of human joint movements and facial expressions. The fabrication of flexible electrodes using the hydrogel enabled real-time monitoring of human electromyography and electrocardiogram signals. The applications in a 2D sensor array and human-machine interaction interfaces also proved the excellent performance of this conductive hydrogels in wearable sensor.
Keyword ：
Flexible Sensor Flexible Sensor Hydrogel Hydrogel MXene MXene Silk fibroin Silk fibroin
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| GB/T 7714 | Zheng, Zhijuan , Xu, Wenjing , Wang, Yang et al. High-conductivity and long-term stability strain sensor based on silk fibroin and polyvinyl alcohol hydrogels [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 38 . |
| MLA | Zheng, Zhijuan et al. "High-conductivity and long-term stability strain sensor based on silk fibroin and polyvinyl alcohol hydrogels" . | MATERIALS TODAY COMMUNICATIONS 38 (2024) . |
| APA | Zheng, Zhijuan , Xu, Wenjing , Wang, Yang , Xiong, Weijie , Xiong, Caihua , You, Lijun et al. High-conductivity and long-term stability strain sensor based on silk fibroin and polyvinyl alcohol hydrogels . | MATERIALS TODAY COMMUNICATIONS , 2024 , 38 . |
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Conductive hydrogels become increasing attractive for flexible electronic devices and biosensors. However, challenges still remain in fabrication of flexible hydrogels with high electrical conductivity, self -healing capability and adhesion property. Herein, a conductive hydrogel (PSDM) was prepared by solution -gel method using MXene and dopamine modified polypyrrole as conductive enhanced materials, polyvinyl alcohol and silk fibroin as gel networks, and borax as cross -linking agent. Notably, the PSDM hydrogels not only showed high permeability (13.82 mg center dot cm 2 center dot h-1), excellent stretch ability (1235 %), high electrical conductivity (11.3 S/m) and long-term stability, but also exhibited high adhesion performance and self -healing properties. PSDM hydrogels displayed outstanding sensing performance and durability for monitoring human activities including writing, finger bending and wrist bending. The PSDM hydrogel was made into wearable flexible electrodes and realized accurate, sensitive and reliable detection of human electromyographic and electrocardiographic signals. The sensor was also applied in human -computer interaction by collecting electromyography signals of different gestures for machine learning and gesture recognition. According to 480 groups of data collected, the recognition accuracy of gestures by the electrodes was close to 100 %, indicating that the PSDM hydrogel electrodes possessed excellent sensing performance for high precision data acquisition and human -computer interaction interface.
Keyword ：
Flexible electrode Flexible electrode Hydrogel Hydrogel MXene MXene Sensor Sensor Silk fibroin Silk fibroin
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| GB/T 7714 | You, Lijun , Zheng, Zhijuan , Xu, Wenjing et al. Self-healing and adhesive MXene-polypyrrole/silk fibroin/polyvinyl alcohol conductive hydrogels as wearable sensor [J]. | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 263 . |
| MLA | You, Lijun et al. "Self-healing and adhesive MXene-polypyrrole/silk fibroin/polyvinyl alcohol conductive hydrogels as wearable sensor" . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 263 (2024) . |
| APA | You, Lijun , Zheng, Zhijuan , Xu, Wenjing , Wang, Yang , Xiong, Weijie , Xiong, Caihua et al. Self-healing and adhesive MXene-polypyrrole/silk fibroin/polyvinyl alcohol conductive hydrogels as wearable sensor . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 263 . |
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Gelatin and sodium alginate (SA) are two important biological macromolecules, exhibiting excellent biocompatibility and gel-forming ability. However, traditional SA and gelatin hydrogel displays limited mass transport, low porosity, instability, and poor mechanical properties extremely restricted their therapeutic effect and application scenarios. Herein, microbial fermentation and synergistic toughening strategies were used for preparing macroporous and tough hydrogel. The study investigated the fermentation and toughening conditions of hydrogel. The hydrogel composed of CaCl2 cross-linked physically network and EDC/NHS cross-linked covalently network, exhibiting significantly improved mechanical properties, and excellent recovery efficiency. In addition, the hydrogel has a hierarchical macroporous structure of 100-500 mu m, demonstrating high porosity of 10 times, swelling rate of 1541.0 %, and high mass infiltration capability. Further, after Ag+ treatment, the macroporous hydrogel dressing showed outstanding biocompatibility. Compared with non-porous hydrogel, the resulting macroporous hydrogel dressing displayed high antibacterial and antioxidant properties. It could effectively alleviate intracellular ROS formation induced by H2O2. In vivo experiments indicated that it has significantly better effect than non-porous hydrogel in accelerating wound healing. The overall results suggest that the gelatin/SA-based macroporous and tough hydrogel proposed in this study holds excellent prospects for application in wound dressings.
Keyword ：
Gelatin Gelatin pH-response pH-response Sodium alginate Sodium alginate
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| GB/T 7714 | Cheng, Jing , Wang, Rixuan , Hu, Yanyu et al. Fermentation-inspired macroporous and tough gelatin/sodium alginate hydrogel for accelerated infected wound healing [J]. | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 268 . |
| MLA | Cheng, Jing et al. "Fermentation-inspired macroporous and tough gelatin/sodium alginate hydrogel for accelerated infected wound healing" . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 268 (2024) . |
| APA | Cheng, Jing , Wang, Rixuan , Hu, Yanyu , Li, Mengxuan , You, Lijun , Wang, Shaoyun . Fermentation-inspired macroporous and tough gelatin/sodium alginate hydrogel for accelerated infected wound healing . | INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES , 2024 , 268 . |
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In this work, we proposed a straightforward self-assembly and in-situ deposition protocol to construct Cu2O/g-C3N4/Ag composites, which demonstrated peroxidase-like attribute and exceptional SERS activity. These composites proved to be an effective SERS analysis tool for detecting organic fungicides like malachite green (MG) and crystal violet (CV). Remarkably, they achieved detection limits as low as 10−9 M in DI water as well as fish pond water, and exhibited a strong linear correlation between logarithmic concentrations and SERS intensities (R2 ≥ 0.97). Beyond that, with the aid of hydrogen peroxide (H2O2), the peroxidase-like Cu2O/g-C3N4/Ag composites rapidly degraded MG and CV molecules within just 5 min. Furthermore, their practical reusability based on the peroxidase-like reaction was proved by high SERS performance across 5 detection cycles. These results emphasize the immense potential of Cu2O/g-C3N4/Ag in SERS-based trace fungicide detection and suggest future applications in ecological restoration through peroxidase-like reactions. © 2024 Elsevier B.V.
Keyword ：
Fish ponds Fish ponds Fungicides Fungicides Reusability Reusability
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| GB/T 7714 | Cheng, Huan , Luo, Kuang , Wen, Xiaojun et al. Constructing recyclable SERS platform based on peroxidase-like Cu2O/g-C3N4/Ag composites for sensitive sensing of fungicides [J]. | Journal of Molecular Liquids , 2024 , 414 . |
| MLA | Cheng, Huan et al. "Constructing recyclable SERS platform based on peroxidase-like Cu2O/g-C3N4/Ag composites for sensitive sensing of fungicides" . | Journal of Molecular Liquids 414 (2024) . |
| APA | Cheng, Huan , Luo, Kuang , Wen, Xiaojun , You, Lijun , Cai, Ning , Li, Jumei . Constructing recyclable SERS platform based on peroxidase-like Cu2O/g-C3N4/Ag composites for sensitive sensing of fungicides . | Journal of Molecular Liquids , 2024 , 414 . |
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Hydrogel-based wearable sensing devices are attractive and have broad application prospects on motion intention recognition and health monitoring. The research on the aspect of their wearable comfort and the improvement of breathability is essential. In this paper, a breathable porous hydrogel film was prepared using a template method combined with the inverse Hofmeister effect. Different from conventional hydrogels that utilize the Hofmeister effect by using lyophilic ions for toughening, our approach involved the reverse application of the Hofmeister effect, the use of chaotropic ions, which induced a loosening effect within the hydrogel interior, thereby achieving a more uniform pore distribution. The prepared hydrogel film has excellent mechanical properties (elongation at break of 404%, tensile strength of 173 kPa), air permeability (9.96 mgcm(-2)h(-1)), and sensitivity (GF = 4.41). The film is used as a wearable sensor with high sensitivity and accuracy to monitor human finger, wrist, and large joint movements, human electrophysiological signals [electromyogram (EMG) and electrocardiogram (ECG)], small changes in vocal cord vibration, and manipulation of electronic devices for gaming. This work provides an approach for the preparation of breathable hydrogel films as wearable sensors.
Keyword ：
breathable film breathable film conductive hydrogel conductive hydrogel gelatin gelatin inverseHofmeistereffect inverseHofmeistereffect wearable sensor wearable sensor
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| GB/T 7714 | Ma, Xiaoyu , Xu, Wenjing , Chen, Jianan et al. Breathable Gelatin Conductive Hydrogels Using a Template Method and Reverse Use of Hofmeister Effect for Wearable Sensors [J]. | ACS APPLIED POLYMER MATERIALS , 2024 , 6 (11) : 6290-6301 . |
| MLA | Ma, Xiaoyu et al. "Breathable Gelatin Conductive Hydrogels Using a Template Method and Reverse Use of Hofmeister Effect for Wearable Sensors" . | ACS APPLIED POLYMER MATERIALS 6 . 11 (2024) : 6290-6301 . |
| APA | Ma, Xiaoyu , Xu, Wenjing , Chen, Jianan , Wang, Yang , Xiong, Weijie , Li, Jumei et al. Breathable Gelatin Conductive Hydrogels Using a Template Method and Reverse Use of Hofmeister Effect for Wearable Sensors . | ACS APPLIED POLYMER MATERIALS , 2024 , 6 (11) , 6290-6301 . |
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A sandwich structured Fe3O4/Ag/m(TiO2-ZrO2) magnetic nanosphere with Ag nanoparticles as an interim layer was fabricated with in situ deposition of Ag nanoparticles onto Fe3O4 nanospheres and subsequent coating an outmost shell of mesoporous TiO2-ZrO2. As compared to Fe3O4/m(TiO2-ZrO2)/Ag with Ag nanoparticles as the outmost layer, unique Fe3O4/Ag/m(TiO2-ZrO2) sandwich nanospheres possess higher efficient charge migration and larger specific surface area disclosed by the BET and photoelectrochemical characterizations, so they present improved photocatalytic activity toward Cr(VI) reduction. In addition, they have high thermal stability because mesoporous TiO2-ZrO2 outmost shell could protect the interim Ag nanoparticles from damage and agglomeration at high temperature. Results showed reduction efficiency of Cr(VI) of Fe3O4/Ag/m(TiO2-ZrO2) reached 98.4 % in 30 min, as 1.6 times as that of Fe3O4/m(TiO2-ZrO2)/Ag. The Fe3O4/Ag/m(TiO2-ZrO2) still obtained 91.3 % and 87.9 % reduction ratio after calcination at 500 celcius and recycling 5 times, respectively. The photocatalytic mechanism was also revealed by scavenger experiments and ERP analysis. This work provided a good example for further design and preparation of magnetic photocatalysts with high performance for the remediation of heavy metal pollutants.
Keyword ：
Ag Ag Cr(VI) Cr(VI) MesoporousTiO2-ZrO2 MesoporousTiO2-ZrO2 m(TiO2-ZrO2) m(TiO2-ZrO2) Photocatalytic reduction Photocatalytic reduction Sandwich nanosphere Sandwich nanosphere
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| GB/T 7714 | Li, Xian , He, Jiafeng , Zhang, Weilong et al. Ag nanoparticles interlayered Fe3O4/Ag/m(TiO2-ZrO2) magnetic photocatalysts with enhanced stability and photocatalytic performance for Cr(VI) reduction [J]. | APPLIED SURFACE SCIENCE , 2023 , 607 . |
| MLA | Li, Xian et al. "Ag nanoparticles interlayered Fe3O4/Ag/m(TiO2-ZrO2) magnetic photocatalysts with enhanced stability and photocatalytic performance for Cr(VI) reduction" . | APPLIED SURFACE SCIENCE 607 (2023) . |
| APA | Li, Xian , He, Jiafeng , Zhang, Weilong , You, Lijun , Li, Jumei . Ag nanoparticles interlayered Fe3O4/Ag/m(TiO2-ZrO2) magnetic photocatalysts with enhanced stability and photocatalytic performance for Cr(VI) reduction . | APPLIED SURFACE SCIENCE , 2023 , 607 . |
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| GB/T 7714 | Yang, Jie , Song, Gao , Zhou, Ling et al. Highly sensitively detecting tetramethylthiuram disulfide based on synergistic contribution of metal and semiconductor in stable Ag/TiO2 core-shell SERS substrates (vol 539, 147744, 2021) [J]. | APPLIED SURFACE SCIENCE , 2023 , 618 . |
| MLA | Yang, Jie et al. "Highly sensitively detecting tetramethylthiuram disulfide based on synergistic contribution of metal and semiconductor in stable Ag/TiO2 core-shell SERS substrates (vol 539, 147744, 2021)" . | APPLIED SURFACE SCIENCE 618 (2023) . |
| APA | Yang, Jie , Song, Gao , Zhou, Ling , Wang, Xinyue , You, Lijun , Li, Jumei . Highly sensitively detecting tetramethylthiuram disulfide based on synergistic contribution of metal and semiconductor in stable Ag/TiO2 core-shell SERS substrates (vol 539, 147744, 2021) . | APPLIED SURFACE SCIENCE , 2023 , 618 . |
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Conductive hydrogels with stretchability, breathability and long-term stability have attracted increasing attention for the applications in interactive wearable devices, artificial prosthetics, and intelligent robots. In this paper, a stretchable (up to 254 %), well breathable (vapor transmission up to 1.231x10(-2) g center dot cm(-2)center dot h(-1)), and stable conductive (1.21 S/m) hydrogel films (Gel/PPy/Ag) was prepared by gel-template immersion method using gelatin as gel networks, polypyrrole (PPy) and silver (Ag) as conductive reinforcing filler and Span 80 as emulsion template. The film could maintain flexibility and conductivity after stored in an environment of -20 degrees C or 25 degrees C for 20 days. The excellent frost resistance and water retention ensured the practical application of the porous organic hydrogel film with environmental adaptability and long-term stability. The strain sensor made from the Gel/PPy/Ag films presented excellent sensitivity (GF reached 2.034), good durability, fast response (0.34 s) and recovery ability (0.36 s). It monitored weak and vigorous human motions effectively and sensitively. The Gel/PPy/Ag flexible electrodes realized the real-time sensitive detection of human Electrocardiogram (ECG) and electromyogram (EMG) signals and precision sensing control of the manipulator arm. The Gel/PPy/Ag hydrogel and the prepared flexible electronic devices have broad application prospects in the field of health monitoring, motion monitoring, operation control and other soft electronic devices.
Keyword ：
Flexible electrodes Flexible electrodes Hydrogel film Hydrogel film Porous conductive hydrogel Porous conductive hydrogel
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| GB/T 7714 | Ma, Xiaoyu , Shi, Xinming , Wang, Yang et al. Stretchable porous conductive hydrogel films prepared by emulsion template method as flexible sensors [J]. | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2023 , 676 . |
| MLA | Ma, Xiaoyu et al. "Stretchable porous conductive hydrogel films prepared by emulsion template method as flexible sensors" . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 676 (2023) . |
| APA | Ma, Xiaoyu , Shi, Xinming , Wang, Yang , Xiong, Weijie , Xiong, Caihua , Yang, Jinhao et al. Stretchable porous conductive hydrogel films prepared by emulsion template method as flexible sensors . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2023 , 676 . |
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Au coated magnetic polyphosphazene (MPCTP) composite particles (MPCTP@Au) were fabricated with sensitive SERS activity. The MPCTP particles were generated by coating polyphosphazene on Fe3O4 nanoparticles through precipitation polycondensation of hexachlorocyclotriphosphazene and phloroglucinol. MPCTP@Au composite particles were obtained by deposition of Au nanoparticles on MPCTP by the reduction of HAuCl4. The size and the thickness of the Au shell can be controlled by varying the amount of HAuCl4. The magnetic core endowed the composite particles with good magnetic responsiveness, which allowed the analyte to be enriched and separated from the complex matrix, and significantly simplifying the sample pretreatment procedure. The SERS activity of MPCTP@Au composite particles were evaluated by DTNB as model Raman reporter, and the limits of detection (LOD) of DTNB was 10-8 mol/L. A high efficient SERS immunoassay system based on the MPCTP@Au substrates for the detection of immunoproteins was developed. Human IgG and rabbit IgG were quantitatively determinated simultaneously by this immunoassay system. The quantitative determination of the immunoglobulin G (IgG) was achieved and the LOD of human IgG, rabbit IgG and the mixture of human IgG and rabbit IgG were as low as 10 fg/mL, 100 pg/mL and 1 ng/mL, respectively. The results showed that the MPCTP@Au composite particles have broad application prospects as high performance SERS active substrates for immunoprotein analysis.
Keyword ：
Bioassay Bioassay Polyphosphazene Polyphosphazene Protein detection Protein detection Surface-enhanced Raman spectroscopy Surface-enhanced Raman spectroscopy
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| GB/T 7714 | You, Lijun , Zhong, Baohua , Huang, Ci et al. Magnetic polyphosphazene@Au particles as substrates for multiple-detection of immunoproteins by surface-enhanced Raman spectroscopy [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 648 : 1006-1014 . |
| MLA | You, Lijun et al. "Magnetic polyphosphazene@Au particles as substrates for multiple-detection of immunoproteins by surface-enhanced Raman spectroscopy" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 648 (2023) : 1006-1014 . |
| APA | You, Lijun , Zhong, Baohua , Huang, Ci , Li, Jumei , Zheng, Zhijuan , Wang, Yang . Magnetic polyphosphazene@Au particles as substrates for multiple-detection of immunoproteins by surface-enhanced Raman spectroscopy . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 648 , 1006-1014 . |
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