Food Packaging and Shelf Life
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2022
·
IF 8.749
Jinsong Li,Xiaoli Qin,Xiong Liu,Jiaqi Li,Jinfeng Zhong
This study aimed to develop rice protein (RP)/sodium alginate (SA)-based biodegradable films with excellent properties by incorporating cellulose nanocrystals (CNCs) and rosemary extract. Effects of the RP/SA weight ratio and CNCs content on the physical properties of the films were investigated, and the improved performance was illustrated by Fourier Transform Infrared spectroscopy and molecular dynamics (MD) simulation. As the RP/SA weight ratio varied from 5:0–1:1, the tensile strength (TS) of the films was increased by 143%, water vapor permeability (WVP) and oil permeability were significantly reduced by 22% and 99.2%, respectively. As the CNCs content increased to 0.3%, the TS was enhanced by 51% and the WVP was reduced by 14%. The improved mechanical and barrier properties of the films were possibly attributed to the formation of a more homogeneous and compact structure observed by scanning electron microscopy. In addition, MD simulation results revealed that there were high number of hydrogen bonds and strong electrostatic interactions in the RP/SA/CNCs/RE system, which may also lead to the improvement of mechanical and barrier properties of films. Finally, the films effectively attenuated oil oxidation . The developed films with enhanced properties are potential food packaging materials.
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高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Shun Hu,Zhen Ge,Jie Tan,Haoran Lai,Tingting Feng,Shu Zhang,Ziqiang Xu,Haiping Zhou,Xiuhua Cao,Guisheng Zhu,Mengqiang Wu
Designing cathode and anode materials that can accommodate capacity and rate performance is a significant challenge in developing lithium-ion capacitors (LICs). Herein, we synthesize a unique N/S dual-doped hierarchical porous carbon (NSC) under the effect of pore distribution modification and heteroatom doping. The nanosheet shape and pore distribution of NSC are highly adjustable, while it demonstrates a reversible capacity that is tens of times more than that of unaltered pristine active carbon. Meanwhile, the prepared glycerol-engineered polyacrylonitrile nanofiber (GPN) form a fast conducting network in the presence of glycerol and carbon nanotubes (CNTs) and exhibit a 300% higher capacity compared to pure polyacrylonitrile nanofibers at 5 A g −1 . On this premise, the constructed highly stable LIC (NSC//GPN x @CNTs) can achieve an energy density of 131.48 Wh kg −1 and have an excellent capacity retention rate (93.5%) over 10,000 cycles at a high current density (5 A g −1 ). This work may lead to new avenues for the preparation of heteroatom-doped porous carbon and redefine the electrode matching of highly stable LICs.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Zhengxin Ma,Zeyuan Xing,Yao Zhao,Hongbo Zhang,Qiangwei Xin,Jie Liu,Meng Qin,Chunmei Ding,Jianshu Li
Multifunctional and sustainable packaging materials applicable to changeable conditions are in high demand as alternatives to petroleum-based polymers. Soybean polysaccharides (SPS) with remarkable antioxidation and film-formation properties are great candidates for sustainable packaging materials. However, the poor water resistance and mechanical properties of SPS hinder their further application. Inspired by the Janus properties of lotus leaf, we developed asymmetric multifunctional packaging films by addressing the problems of SPS while keeping their merits. Specifically, SPS-stabilized silver nanoparticles were incorporated with gelatin and wax to enhance the mechanical properties and water tolerance of the resulting film. Moreover, hierarchical micro-/nano-structures consisting of carnauba wax were feasibly fabricated on one side of the film, resembling the natural front lotus leaf. This Janus film has outstanding water resistance, outperforming all other SPS-based materials reported to date. In addition, the excellent antibacterial activity (>95 % against Escherichia coli and Staphylococcus aureus ), antioxidation properties (2-fold enhancements), and UV-blocking performance (∼100 % at 200–400 nm) were well retained. By virtue of these multifunctional properties, the resulting film has been successfully applied in food packaging, as evidenced by meat and fruit preservation experiments. This biomimetic strategy provides a reference for the fabrication of sustainable high-performance food packaging.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2023
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IF 5.7
Chaoyu Liang,Jin Huang,Jianjun Wang,Hongxiao Gong,Wang Guo,Ruiqi Cao,Pengbing Zhao
The conventional LTCC fabrication route requires a series of costly molding equipment and a complicated manufacturing process. If it is achievable to fabricate ceramics using three-dimensional inkjet printing (IJP) technology, it is anticipated that LTCC components could be designed as a more efficient and flexible additive manufacturing route using IJP technology to co-print ceramic and conductive layers and co-fire them. This research represents the first attempt to utilize IJP technology in the field of LTCC, where we developed a stable SiO 2 -H 3 BO 3 nanoceramic ink that can be continuously printed through a piezoelectric nozzle with an array of spray holes. The ink was supplemented with selected photosensitive resins to facilitate the curing of the printed layer under ultraviolet light irradiation. Green bodies are sintered at 950° for two hours to obtain ceramic sheets with good surface flatness and microscopic sintering degrees. The tested samples have an ultra-low dielectric constant ( ε r ) of about 2.485 and a low dielectric loss (tan δ ) of about 0.0038 (at 1 MHz), while being stable at high temperatures (< 400°) and high frequencies (< 10 GHz), indicating its ability to match the required dielectric properties required for microwave dielectric substrates.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
·
IF 10.53
Xiaoping Wang,Yanling Liu,Kaiming Fan,Peng Cheng,Shengji Xia
Introducing nanomaterials into the polyamide layer of thin-film composite (TFC) membranes during interfacial polymerization process can customize the physicochemical properties of membranes and further enhance the membrane permeability without sacrificing selectivity. In this study, we prepared novel thin-film nanocomposite (TFN) nanofiltration membranes by varying the deposition density of hierarchical flower-like structured molybdenum disulfide (HF–MoS 2 ) with the assistance of vacuum filtration. Ascribed to the unique 3D hierarchical structure of HF–MoS 2 , a nano-sized striped polyamide film with a decreased thickness of 30–40 nm was formed, which increased the membrane effective filtration area and reduced the mass transfer resistance for water permeation. In addition, compared to the control TFC membrane, the TFN membranes possessed relatively looser polyamide layers with higher surface hydrophilicity and more negative surface charges. When the deposition density of HF–MoS 2 was 10 μg/cm 2 , the optimal performance of the TFN membranes was obtained, i.e., a water permeability of 18.4 L m −2 h −1 bar −1 and rejections above 98% for Na 2 SO 4 and MgSO 4 . Moreover, the optimal TFN membrane demonstrated an excellent separation performance and structure stability in the mixed salt solution and the long-term filtration test of 120 h, respectively. This work provides a novel approach to design high-performance TFN membranes applied for water/wastewater treatment.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 47
·期 3
·1174-1185
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IF 3.925
Xinyu Liu,Jing Xu,Jiandong Wu,Zhenlu Liu,Shengming Xu
In the process of photocatalysis, semiconductor materials generate photogenerated electrons and photogenerated holes when excited by sunlight, so as to participate in the process of photocatalytic decomposition of water to produce hydrogen. In this work, under the combined action of ultrasonic and electrostatic forces, two semiconductors are successfully coupled through electrostatic self-assembly to effectively avoid the serious phenomenon of sulfide photocorrosion. Through electrochemical and fluorescence characterization experiments, it is confirmed that ZnCo2O4/CdS can accelerate the generation and transmission rates of photogenerated carriers. ZnCo2O4/CdS greatly increased the activity of the catalyst under simulated sunlight irradiation. With good photocatalytic activity, the hydrogen yield reached 80.71 mmol g−1 within 5 hours, far superior to those of Co3O4/CdS and ZnO/CdS. The relative values of the work functions of ZnCo2O4(311) and CdS(110) were calculated by DFT. Combined with the position of the conduction band, it was concluded that a new S-scheme induced by an internal electric field was formed at the ZCO/CS-25% contact interface, thus improving the photocatalytic activity.
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Food Packaging and Shelf Life
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2023
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IF 8
Yitong Dong,Zhilu Rao,Yanchun Liu,Xuejing Zheng,Keyong Tang,Jie Liu
An edible film based on soluble soybean polysaccharide (SSPS) and gelatin incorporating curcumin was fabricated as active packaging material for soybean oil . The effect of curcumin (Cur) on structural and physical properties of SSPS/gelatin films were investigated. Scanning electron microscopy revealed that curcumin was evenly distributed in the SSPS/gelatin matrix. Hydrogen bonding interactions between SSPS/gelatin and curcumin were unveiled by Fourier-transform infrared spectroscopy. The addition of curcumin (0 −0.20 %) significantly increased the tensile strength , temperature of maximum mass loss rate, yellow index, transparency value and water contact angle from 2.3 to 5.5 MPa, 249–252 °C, 2.04–183.07, 0.51–1.63, and 70.7–98.6°, respectively. The DPPH and ABTS radical scavenging activities of the SSPS/gelatin film containing 0.20% curcumin were 42.6 % and 99.6 %, respectively, which were remarkably higher than those of neat SSPS/gelatin film. The SSPS/gelatin/Cur composite films showed antibacterial activity against Escherichia coli and Staphylococcus aureus . The heat-sealed SSPS/gelatin/Cur pouch of soybean oil showed quick-dissolving property upon contact with hot water. Moreover, peroxide value results indicated that the SSPS/gelatin/Cur pouch could effectively delay the soybean oil oxidation under accelerated storage conditions. Therefore, the SSPS/gelatin/Cur composite films may be served as active packaging materials for edible oils .
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Journal of Energy Storage
·
2023
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IF 9.4
Chuhan Zhang,Qingli Sui,Lin Lu,Yongjin Zou,Fen Xu,Lixian Sun,Dan Cai,Cuili Xiang
This paper presents CuCo 2 O 4 @MoNi-layered double hydroxides (CuCo 2 O 4 @MoNi-LDH) core–shell assemblies synthesized successfully by a stepwise process using hydrothermal and calcination methods. The morphology of a core–shell structure consisting of nanosheets grown uniformly on the surface of the hollow spheres was realized. The results showed that CuCo 2 O 4 @MoNi-LDH hollow spherical nano-sheets are an excellent choice for applications that require outstanding structural stability and a high specific surface area. A specific capacitance of 1286 F g −1 was obtained at a current density of 1 A g −1 , which indicates its promising application in supercapacitors . Furthermore, asymmetric supercapacitors assembled using CuCo 2 O 4 @MoNi-LDH positive electrodes achieved an ultra-high strength density of 68.1 Wh kg −1 at an energy density of 795.9 W kg −1 with an excellent cycling stability (i.e., the capacitance retention rate of 88 % after 6000 cycles). According to these findings, CuCo 2 O 4 @MoNi-LDH is a strong contender for power storage applications.
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高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2023
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IF 5.8
Bo Li,Haocheng Yang,Kaiyuan Cheng,Hongli Song,Jie Zou,Chenchen Li,Wenqian Xiao,Zhongning Liu,Xiaoling Liao
To avoid infection and other risks caused by large open-surgery incisions using scaffold transplants, it is very important to study injectable microcarrier-loaded cells for targeted therapy and tissue regeneration . In this study, on the one hand, to simulate the hierarchical structure of the extracellular matrix and carry cells, poly( L -lactic acid) (PLLA) nanofibrous microspheres (large microspheres) were initially fabricated as cell carriers. On the other hand, to precisely deliver cells through a magnetic field and promote stem cell differentiation , drug-loaded mesoporous Fe 3 O 4 @SiO 2 microspheres (small microspheres) were prepared and coated on the surface PLLA nanofibrous microspheres. The coating conditions were systematically studied and optimized. The results showed that planetary-satellite-like cell carriers were successfully prepared and the carriers were capable of freely translocating under the influence of a magnetic field. It has been demonstrated in vitro experiments that the carriers are biocompatible and are capable of acting as drug carriers. Specifically, they were able to load and release cells in response to magnetic fields. In vivo experiments indicated that the carriers could successfully load and release GFP-labelled cells in nude mice . The study presented in this paper provides a versatile and promising platform for the cell-based therapy in tissue engineering and regenerative medicine.
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PubMed
高影响因子
ChemCatChem
·
2023
·Vol. 15
·期 5
·e202201615
·
IF 4.5
Huijie Cao,Tianran Wei,Qian Liu,Shusheng Zhang,Yongji Qin,Hao Wang,Jun Luo,Xijun Liu
Graphical Nano-structured materials for glycerol/glucose oxidation reaction : Herein, hollow-structured PW-NiCo-NC was synthesized from a POMOF precursor as a highly efficient and stable electrocatalyst for HER and glycerol/glucose oxidation reaction. Furthermore, it exhibits energy-efficient catalytic hydrogen production activity in an OWS cell assisted by glycerol/glucose oxidation reaction. The electrocatalytic conversion of water-to-hydrogen powered by renewable energy is one of the promising strategies to unravel the energy and environment crises. However, a such process usually costs large energy consumption owing to the low efficiency of anodic oxygen evolution reaction (OER), which is another vital half reaction of the overall water splitting (OWS) system. Herein, we designed and fabricated hollow nitrogen-doped carbon nanocages loaded with Ni 3 N and Co nanoparticles derived from polyoxometalate-encapsuled metal-organic frameworks. The catalyst exhibited appealing dual functions for both OER and hydrogen evolution reaction (HER), outperforming the Ni-free and solid samples. Notably, the designed catalyst also showed much enhanced electrochemical performance for glycerol/glucose oxidation reaction when compared with OER. The home-made two-electrode electrolyzer, coupled HER with polyalcohol or glucose oxidation reaction, only needs cell voltages of 1.125 and 1.557 V to reach 10 mA cm −2 , respectively, which are much smaller than that in 1 M KOH (2.087 V), demonstrating a large amount of energy saving for hydrogen production.
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高影响因子
JOURNAL OF CHEMICAL RESEARCH
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2023
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IF 1.4
Zhe Chen,Yunxia Wang
A label- and enzyme-free fluorescence assay based on thioflavin T–induced G-quadruplexes is developed to sensitively and specifically detect telomerase activity. Thioflavin T has a dual role as an efficient inducer and fluorescent probe, and the incorporation of thioflavin T into the thioflavin T–induced G-quadruplexes results in an intense fluorescence enhancement. In the presence of thioflavin T and K+, G-quadruplexes are formed by elongation of the telomerase substrate primer that is catalyzed by telomerase extracted from cancer cells. Thus, the telomerase activity in cancer cell extracts can be evaluated by measuring the thioflavin T fluorescence. More importantly, thioflavin T can specifically recognize and bind to G-quadruplexes, whereas it cannot recognize single- and double-stranded DNAs, which leads to the thioflavin T–based fluorescence assay exhibiting a reduced background and improved signal-to-noise ratio. As a result, the proposed assay has the linear range from 5 to 200 HeLa cells and the detection limit is 34 HeLa cells, which holds great potential for use in the detection of telomerase activity and the diagnosis of cancer.
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高影响因子
COMPOSITES COMMUNICATIONS
·
2023
·
IF 8
Yaqin Wang,Congrui Bai,He Shi,Yingying Xu,Xiaoming Wang,Zhaoyang Fan,Huan Jiao
Carbon nanotube yarn is a potential substance for the fabrication of fiber-shaped energy storage devices owing to its lightweight, stiffness, and excellent electrical properties. However, it has a compact structure with a limited pore volume , leading to insufficient active material loading and inadequate gel electrolyte penetration. These seriously restrict its application in fiber-shaped energy storage devices made entirely of solid-state components. Herein, glycerol-functionalized polyacrylonitrile nanofibers (GPN) are electro-spun and collected on Ti wire. And they are chosen as hydrophilic support to load carboxylic multiwalled carbon nanotubes (CMWCNTs) via dip-coating. After oxidation , a 3D rolled O-CMWCNTs@GPN/Ti aerogel fiber-shaped structure with macroscopic thickness and excellent stability in water is fabricated. The O-CMWCNTs@GPN/Ti structure has a high length-specific capacitance value of 15.2 mF cm −1 itself. It also can be used as a current collector to load pseudocapacitive materials to improve capacity. With polyaniline (PANI) electrodeposited in this structure, the as-prepared hybrid aerogel electrode PANI@O-CMWCNTs@GPN/Ti displays a high specific capacitance of 52.6 mF cm −1 in a fiber-shaped supercapacitor device. All features suggest that O-CMWCNTs@GPN/Ti aerogel is an excellent candidate for flexible fiber-shaped energy storage devices.
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