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学者姓名:游力军
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Conductive hydrogels have attracted immense interest in the field of flexible electronic devices and biosensors. However, issues such as poor breathability, insufficient adhesion and water retention properties still remain and limit their applications as wearable sensors. To address these issues, a porous conductive hydrogel (SA/PAM/CTAB-GO) with high breathability (5.97 mg.cm−2·h−1), favorable conductivity (2.85 S/m), desirable adhesion (1.39 KPa) and moisture retention properties was synthesized by polymerization and crosslinking using sodium alginate and polyacrylamide as gel substrates, cetyltrimethylammonium bromide modified graphene oxide as foam stabilizer and Ca2+ as crosslinking agent. The hydrogel exhibited excellent mechanical properties, water retention characteristics, and high breathability comparable to cotton. Moreover, the SA/PAM/CTAB-GO hydrogel presented excellent sensing sensitivity, fast response ability (225 ms), and favorable endurance, which monitored human motions sensitively and realized the accurate, sensitive and reliable detection of human ECG and EMG signals. The hydrogel sensor was applied in human-computer interaction and sensitively controlled robot arms and virtual characters. The design of dual network mechanism of calcium crosslinking and foam porosity method improved the sensing properties, breathability, adhesion, and stability of the hydrogel making it possesses high performance as wearable sensor and has promising application prospect in flexible electronics. © 2025 Elsevier B.V.
Keyword :
Crosslinking Crosslinking Elastomers Elastomers Flexible electronics Flexible electronics Human robot interaction Human robot interaction Robotic arms Robotic arms Sodium alginate Sodium alginate
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GB/T 7714 | Chen, Jianan , Wang, Yang , Xu, Wenjing et al. High performance breathable conductive hydrogel sensor based on sodium alginate and polyacrylamide with cross-linked dual network structures [J]. | International Journal of Biological Macromolecules , 2025 , 307 . |
MLA | Chen, Jianan et al. "High performance breathable conductive hydrogel sensor based on sodium alginate and polyacrylamide with cross-linked dual network structures" . | International Journal of Biological Macromolecules 307 (2025) . |
APA | Chen, Jianan , Wang, Yang , Xu, Wenjing , Wu, Xiang , Bao, Qi , You, Lijun et al. High performance breathable conductive hydrogel sensor based on sodium alginate and polyacrylamide with cross-linked dual network structures . | International Journal of Biological Macromolecules , 2025 , 307 . |
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In this research, we fabricated an innovative NiO/CN/Ag composite through the straightforward electrostatic assembly of Ag nanoparticles and g-C3N4 sheets onto NiO nanoflowers. This composite enables both surface enhanced Raman spectroscopy (SERS) detection and photo-degradation of pesticides. The results reveal NiO/CN/ Ag can quantitatively detect thiram (TRM) and diquat dibromide (DQDB) in water, with a limit of detection (LOD) of 10-9 M, and also exhibit outstanding photo-degradation efficiency, exceeding 95 % for TRM and DQDB within 90 min under simulated sunlight. Significantly, after the organic reagent (citric acid) on NiO/CN/Ag was completely removed through simulated solar irradiation, the signal-to-noise ratios of SERS spectra on NiO/CN/ Ag were enhanced, achieving LODs of 10- 8 M for TRM and DQDB in different fruit juices and dried flower teas. Additionally, the composite demonstrate impressive recyclability, maintaining robust SERS signals and high degradation rates even after five cycles of "detection-degradation" processes.
Keyword :
Electrostatic self-assembly Electrostatic self-assembly Pesticide residue Pesticide residue Photo-degradation Photo-degradation Recyclable sensing Recyclable sensing SERS SERS
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GB/T 7714 | Wen, Xiaojun , Liu, Yiting , Zhang, Weilong et al. Recyclable NiO/g-C3N4/ag hybrid substrates for sensitive SERS detection and photo-degradation of residual pesticides in beverages [J]. | FOOD CHEMISTRY , 2025 , 464 . |
MLA | Wen, Xiaojun et al. "Recyclable NiO/g-C3N4/ag hybrid substrates for sensitive SERS detection and photo-degradation of residual pesticides in beverages" . | FOOD CHEMISTRY 464 (2025) . |
APA | Wen, Xiaojun , Liu, Yiting , Zhang, Weilong , You, Lijun , Cai, Ning , Li, Jumei . Recyclable NiO/g-C3N4/ag hybrid substrates for sensitive SERS detection and photo-degradation of residual pesticides in beverages . | FOOD CHEMISTRY , 2025 , 464 . |
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With the increasing demand for wearable sensing devices equipped with hydrogels for motion intent recognition and health monitoring applications, it is urgent to carry out research on enhancing their comfort and breathability. Gel/PVA/DPy breathable hydrogels with high breathability, excellent electrical conductivity, and sensing ability were prepared by the fermentation method using gelatin and polyvinyl alcohol to create a dual-network structure of hydrogels with Dopamine-modified polypyrrole(DPy) serving as a conductive filler. The prepared hydrogel film exhibits excellent air permeability (5.83 mg·cm−2·h−1), tensile sensitivity (GF=5.14), compressive sensitivity (GF = 5.33), outstanding responsiveness to external tensile stimulation (response time of 0.30 s, recovery time of 0.20 s), and exceptional responsiveness to external compressive stimuli (response time of 0.20 s, recovery time of 0.30 s). The film is utilized as a high-sensitivity, high-precision wearable sensor for monitoring activities such as finger bending, facial micro-expressions, wrist swinging, and throat vocalizations; for real-time pressure-sensitive arrays; and for controlling electronic devices for gaming. This study offers a design concept and reference for preparing breathable hydrogel films for wearable sensors. © 2025 Elsevier B.V.
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GB/T 7714 | Xu, Wenjing , Ma, Xiaoyu , Chen, Jianan et al. Highly sensitive gas permeable gelatin-polyvinyl alcohol conductive hydrogels prepared by fermentation method as wearable sensor [J]. | Sensors and Actuators A: Physical , 2025 , 388 . |
MLA | Xu, Wenjing et al. "Highly sensitive gas permeable gelatin-polyvinyl alcohol conductive hydrogels prepared by fermentation method as wearable sensor" . | Sensors and Actuators A: Physical 388 (2025) . |
APA | Xu, Wenjing , Ma, Xiaoyu , Chen, Jianan , Wu, Xiang , Bao, Qi , You, Lijun et al. Highly sensitive gas permeable gelatin-polyvinyl alcohol conductive hydrogels prepared by fermentation method as wearable sensor . | Sensors and Actuators A: Physical , 2025 , 388 . |
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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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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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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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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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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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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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