CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lei Wang,Yilun Gao,Jianjun Luo,Wenyang Xu,Chi Zhang,Hua Yuan,Yaopeng Zhang,Yaokun Pang
Biodegradable or eco-friendly triboelectric materials from natural polymers are considered promising and viable alternative for the development of green triboelectric nanogenerators (TENGs). Yet, they are mostly struggling from poor mechanical properties and low triboelectric output performance. In this work, we developed a highly efficient NH 2 -MXene/TiO 2 @sodium alginate (NMTS) composite film with NH 2 -MXene/TiO 2 as a filler and sodium alginate (SA) as a matrix and a TENG based on this composite film (NMTS-TENG) was constructed. The tribo-positive characteristic of SA was enhanced by adding NH 2 -MXene and TiO 2 . Different loaded content of the NH 2 -MXene and TiO 2 were explored and optimized to improve mechanical properties of the composite film and the output performance of NMTS-TENG. The microstructure and dielectric constant of the composite films were well characterized to investigate the enhancement mechanism. Under optimal conditions, the tensile strength of the composite film reaches up to 175.0 MPa and surpass the pure SA film. The NMTS-TENG shows the output performance with an open-circuit voltage of 357.6 V and short-circuit current of 55.1 µA, and the output peak power increases by 9.3 times compared with pure SA-based TENG. In addition, we developed a TENG device to harvest ocean wave energy for self-powered cathodic protection. The electrochemical test results reveal that the open circuit potential of the protected Q235 carbon steel can decrease by 74 mV and the corrosion potential decrease by 146.5 mV, indicating the good anti-corrosion properties. This study provides a promising method to develop high-performance biomaterials based TENG and expands the practical application of SA in the field of the electrochemical cathodic protection.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jianan Chen,Yang Wang,Wenjing Xu,Xiang Wu,Qi Bao,Lijun You,Caihua Xiong,Shaoyun Wang
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 Ca 2+ 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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yaqi Xiao,Zhi Cai,Ying Yi,Yihua Yin,Weiquan Cai,Guanghua He,Jingli Zhang,Wenjin Xu,Yaru Li
Cationic photosensitizers have higher photodynamic antibacterial activity compared with anionic photosensitizers, and with low toxicity and no drug resistance. However, their poor photostability and low utilization rate limit their practical applications. Herein, a new strategy for the construction of a GSH-responsive antibacterial nanogel system is developed via the electrostatic interaction between methylene blue (MB) and sulfonated sodium alginate (HSSA) to self-assemble into nanoparticles followed by sulfhydryl cross-linking in an aqueous solution. The photobleaching of MB can be inhibited due to the self-aggregation-caused quenching (ACQ) effect, but the photodynamic activity can be restored by breaking the disulfide-crosslinking bonds in the nanogel in response to 10 mM GSH. In vitro antibacterial tests prove that the system has antibacterial activity beyond anionic photosensitizers. Antibacterial studies on plants show that the system has targeted antibacterial activity on infected plants and good wettability, retention, and adhesion to plant leaves. Safety evaluation shows that the system has no obvious toxic effect on plants. Therefore, this study provides a new approach to the discovery of novel photodynamic bactericides.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yijiang Li,Chen Chen,Wencheng Xia,Yujin Sun,Hongxin Qiu
In this study, in-situ flocculation kinetics tests, fourier transform infrared spectroscopy and DFT theoretical calculation were used to analyze flocs properties of calcite flocs under combination of sodium alginate and AlCl 3 /polyaluminum chloride (PAC) and their adsorption mechanism. The results showed that the average size of calcite flocs treated with AlCl 3 -sodium alginate was smaller than that of flocs treated with PAC-sodium alginate. The number of residual fine particles in the slurry treated with AlCl 3 -sodium alginate was more than that in the slurry treated with PAC-sodium alginate. However, the fractal dimension of calcite flocs treated with AlCl 3 -sodium alginate was larger than those treated with PAC-sodium alginate. The sodium alginate and Al 3+ could form chemical adsorption on the calcite surface. AlCl 3 has a higher content of Ala than PAC. Ala could form chemical adsorption between sodium alginate and calcite, resulting in a high strength and fractal dimension of calcite flocs. Alb and Alc was not easily able to form metal bridges between calcite and sodium alginate. The sweep effect of PAC and sodium alginate leads to the formation of large-sized flocs. This work can promote the supplication of sodium alginate as a green flocculant.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jingyi Hu,Yihua Xu,Xiaolu Ma,Weitong Hu,Yunting Zhang,Yuxian Ye,Shengfei Yang,Hangjuan Lin,Xiaoxia Sheng,Jiahe Wu,Tianyuan Zhang,Jianqing Gao
Hair-related disorders are currently widely concerned issues for not only the scientific society but also the public attentions. Microneedle-based drug delivery system has been regarded as a promise hair follicle-targeted drug delivery approach, largely because they can effectively penetrate the stratum corneum barrier and deliver drugs to hair follicles within dermis. However, the currently reported microneedles for treating hair-related disorders usually rely on rigid backings, showing poor adaptability to the curved scalp and thereby restricting their usability for hair follicles targeted drug delivery. To this end, this study utilized sodium alginate and polyvinylpyrrolidone to construct a scalp-curvature-conforming microneedle with flexible backing. Subsequently, Psoralea corylifolia extract (PE) was loaded into the microneedles to investigate its capability in delivering PE to the hair follicle site for treating leukotrichia associated with vitiligo. These PE-loaded microneedles can effectively conform to the curvature of skin, enhancing the efficiency of microneedle insertion and ensuring stable drug delivery. Moreover, animal studies demonstrate that the PE loaded microneedles can effectively penetrate the stratum corneum, benefiting the drug delivery to hair follicles located site, and consequently showing a successful inhibition of hair graying. In summary, the present study reports a design and preparation of scalp-curvature-conforming microneedle. This design may offer a potential solution for efficient drug delivery using microneedles to the curved skin.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Asif Ali Khan,Feng-Jie Cui,Muhammad Wajid Ullah,Abdul Qayum,Ibrahim Khalifa,Syed Asim Shah Bacha,Zheng-Zi Ying,Ismail Khan,Umar Zeb,Abdullah A. Alarfaj,Mohammad Javed Ansari,Yan Yang,Wei Jia,Wen Li
This study aimed to develop bioactive films based on curdlan (CD) and sodium alginate (SA) to enhance the shelf life of the Volvariella volvacea mushroom. A stable nanoemulsion of droplet size of 150.1 ± 5 nm was first formulated using 5% soy protein (Sp) and 10% lavender essential oil (LEO), achieved by ultrasound treatment for 10 min, resulting in small droplet sizes. In parallel, a CD-SA film was prepared by mixing them in a 1:1 ratio. The SpLEO nanoemulsion was then ex situ added to the CD-SA film at varying concentrations (4%, 6%, 8%, and 10%). The resulting bioactive film exhibited desirable properties, including water vapor permeability (1.15 ± 0.05 × 10 −10 g m −1 Pa −1 s −1 ), swelling rate (547%), and tensile strength (10.1 ± 1.3 MPa). Docking and structural analyses suggested that ultrasound treatment enhanced the intermolecular hydrogen bonding, creating a uniform and regular surface and reduced crystallinity. The CD-SA film with ultrasound-treated 8% SpLEO nanoemulsion [i.e., (CD-SA/SpLEO-8)US] showed antibacterial activity against Escherichia coli and Staphylococcus aureus and extended the freshness of straw mushrooms prevention of spoilage during storage. Additionally, the film reduced respiration rate (975 mg CO₂/kg/h at 96 h) and ethylene production (160 ng/kg/s by 96 h) while effectively inhibiting straw mushroom autolysis. This led to a reduction in browning (2.91), total soluble solids (7.5%), weight loss (13.9%), and polyphenol oxidase activity (0.08 ΔOD 420 /min⋅g), thereby extending the shelf life of the mushrooms to 96 h. These findings highlight the potential of incorporating different molecules using ultrasound treatment to develop innovative edible films for food preservation.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Electronic Materials
·
2024
·
IF 4.3
Peihua Xu,Lida Zhu,Baoquan Chang
Endowing variable-stiffness soft robots (VSSRs) with sensing capabilities will help to improve their safe interaction capabilities and intelligence. Therefore, this work adopts direct ink writing (DIW) to directly fabricate functional soft components of the VSSR, including heating and sensing. To improve the printing accuracy of DIW, the liquid metal (LM)/sodium alginate (SA) composite ink was prepared by sonicating LM in a SA aqueous solution and centrifuging. Functional soft components were printed on the bottom and top of the soft robot with LM/SA ink by DIW and were used to achieve low-voltage (as low as 1.5 V) Joule heating and to sense the bending deformation of the soft robot with a low response time (about 80 ms), respectively. Then, the photoabsorber Sudan I (0.02 wt %) was added to the commercial photosensitive resin to improve the precision of digital light processing for manufacturing the soft robot body. Through control of the flexible heating circuit to realize the solid–liquid transition of the low-melting-point alloy (47 °C), the stiffness of the soft robot can be changed. This work has great prospects for the design and manufacture of a VSSR with integrated sensing capability.
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Sai Yang,Ziteng Lian,Lin Cheng,Xiuying Liu,Shicheng Dai,Xiaohong Tong,Huan Wang,Lianzhou Jiang
In this study, the emulsion gel system was constructed by succinylated SPI (SSPI) emulsion together with sodium alginate (Alg). The aim was to evaluate the influence of succinylation and Alg concentration (0 %, 1 %, 1.5 %, 2 %, 2.5 %, w/v) on the emulsion gel structure and formation mechanism, the encapsulation efficiency, release behavior, and digestion properties of quercetin . The succinylation modification and the increase in Alg concentration improved the textural properties of the emulsion gels and SSPI-2 % showed the optimum water-holding capacity (91.37 %). Fourier transform infrared spectroscopy , intermolecular forces, and X-ray diffraction indicated the formation of the gel network dominated by electrostatic interactions and hydrogen bond stabilization, with a decrease in the crystal size and disruption of the molecular rigidity structure. Low-field nuclear magnetic resonance, rheology, and microstructures showed the improvement of the moisture distribution of the gels and the formation of denser and more homogeneous. The quercetin delivery properties of SSPI emulsion gels were enhanced compared to SPI emulsion gels. The encapsulation rate of quercetin was further enhanced with increasing Alg concentration, and the optimum was reached at SSPI-2 % (96.40 %). The Ritger-Peppas model describes quercetin from SPI and SSPI gels regulated by different release kinetics in gastrointestinal fluids with a favorable sustained release effect. In addition, SSPI-2 % exhibited the highest quercetin bioaccessibility (74.54 %) and chemical stability (66.81 %). This research provides novel perspectives to explore the development of innovative emulsion gels and transport systems for bioactive.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Huanhui Zhan,Ju Liu,Ping Wang,Chenfei Wang,Zhongguo Wang,Muhua Chen,Xinbao Zhu,Bo Fu
In the field of building energy conservation , the development of biodegradable biomass aerogels with excellent mechanical performance, flame retardancy and thermal insulation properties is of particular importance. Here, a directional freeze-drying method was used for fabricating composite sodium alginate (SA) aerogels containing functionalized ammonium polyphosphate (APP) flame retardant . In particular, APP was coated with melamine (MEL) and phytic acid (PA) by a supramolecular assembly process. Through optimizing the flame retardant addition, the SA-20 AMP sample exhibited excellent flame retardant and thermal insulation properties, with the limiting oxygen index of 38.2 % and the UL-94 rating of V-0. Such aerogels with anisotropic morphology demonstrated a low thermal conductivity of 0.0288 (W/m·K) in the radial direction (perpendicular to the lamellar structure). In addition, as-obtained aerogels displayed remarkable water stability and mechanical properties, indicating significant potential for practical applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2018
·Vol. 23
·期 3
·546
·
IF 3.098
Lei Wang,Wanfu Zhou,Qingguo Wang,Chao Xu,Quan Tang,Haiyang Yang
Oxidized sodium alginate is a handily modifiable polysaccharide owing to the pendant aldehyde groups which can form dynamic covalent bonds with amines, acylhydrazines, etc., providing oxidized sodium alginate-based hydrogels with stimuli-responsive properties. However, due to the stiffness and, in particular, the hydrophobicity of sodium alginate dialdehyde at low pH, the mechanical performance and pH stimuli responsiveness of oxidized sodium alginate-based hydrogels are still strictly limited. Herein, we report a new strategy to build an injectable, dual responsive, and self-healing hydrogel based on oxidized sodium alginate and hydrazide-modified poly(ethyleneglycol) (PEG). The hydrazide-modified PEG, referred to as PEG-DTP, acts as a macromolecule crosslinker. We found that the presence of PEG-DTP reduces the hydrophobicity of oxidized sodium alginate at low pH so effectively that even a pH-induced reversible sol-gel transitions can be realized. Meanwhile, the disulfide bonds in PEG-DTP endows the hydrogel with the other reversible sol-gel transitions by redox stimuli. In particular, due to the softness of PEG-DTP chains, mechanical performance was also enhanced significantly. Our results indicate we can easily integrate multi-stimuli responsiveness, injectability, and self-healing behavior together into an oxidized sodium alginate-based hydrogel merely by mixing an oxidized sodium alginate solution with PEG-DTP solution in certain proportions.Keywords:oxidized sodium alginate;dynamic covalent bonds;stimuli-responsive;sol-gel transitions;injectable hydrogel;self-healing
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Pengyuan Sun,Yingao Zhu,Lingyu Yin,Baohua Kong,Xiufang Xia,Qian Liu,Hui Wang
In this study, potassium-doped carbon dots (K-CDs) were added to sodium alginate (NaAlg) hydrogel to yield high-strength, antibacterial, antioxidant NaAlg hydrogel absorbent pads (NaAlg/K-CDs) to absorb chilled pork exudate during storage. The results revealed that the swelling rates of the NaAlg/K-CDs peaked at 3286.83%, a figure exceeding that of the commercial absorbent pads. Based on the bacterial diversity and richness results, Pseudomonas aeruginosa ( P . aeruginosa ) was evidently the dominant spoilage organism during chilled pork storage. On storage day 6, the P . aeruginosa population in the NaAlg/K-CDs hydrogel absorbent pad group was 82% of that in the control group. The total volatile basic nitrogen (TVB-N) value of the NaAlg/K-CDs group remained lower than 0.15 mg/g on day 8. The pH, TVB-N, total viable count (TVC), cooking loss, and volatile odour values of the chilled pork in the NaAlg/K-CDs hydrogel absorbent pad group were significantly lower than those in other absorbent pad groups. Moreover, the colour change and shear force values of the chilled pork in the NaAlg/K-CDs hydrogel absorbent pad group were lower than those in the control and wood fiber paper absorbent pad groups. These results indicate that the shelf life of the NaAlg/K-CDs-packaged chilled pork was extended by 2 days compared with that of the control. Therefore, the NaAlg/K-CDs hydrogel absorbent pads potentially inhibited microbial growth and improved the storage quality of chilled pork. This study provides an alternative solution against traditional chilled pork absorbent pads, further promoting the advancement of fresh meat preservation techniques.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Lu Xin,Aiyuan Jia,Zhi Liu,Can Shi,Zhisheng Liu,Mei Hong,Yangxue Li
The ecological threat posed by ciprofloxacin (CIP) contaminated groundwater could be settled by permeable reactive barriers (PRB) technology. However, exploiting proper and recyclable backfill medium was a major challenge for a PRB system. Herein, a novel three-component covalent organic polymer (SLEL-7) was synthesized by a solvothermal method for the adsorptive purification of CIP in groundwater, followed by the successful introduction into sodium alginate to acquire excellent recyclable beads (SLEL-7@SA beads) achieving enhanced adsorption behaviors. Plausible adsorption mechanisms were proposed through characterizations and adsorption studies in addition to the main controlling factors, including pore filling effect, hydrogen bonding and π-π EDA interaction, of course, hydrophilic-lipophilic balance and electrostatic interaction also took part in. Aside from that, a laboratory PRB column loading SLEL-7@SA beads as backfill medium was established which could continuously treat 60 bed volumes (BVs) of CIP (500 μg·L –1 ). And to be more specific, the Thomas, Yoon-Nelson and Adams-Bohart models were applied to predict the dynamic behaviors of CIP adsorption in the column. Overall, this work emphasized the structural and functional design of three-component COPs and the great potential of macroscopic COP@SA composite beads for in-situ remediation of CIP micro-polluted groundwater.
✓ 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）