JOURNAL OF MEMBRANE SCIENCE
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2022
·
IF 10.53
Li-Hao Xu,Yan Li,Shen-Hui Li,Ming-Yu Lv,Zhi-Ping Zhao
Expanding the metal–organic frameworks (MOFs) category using room-temperature colloidal chemistry route with regular crystal structure is challenging, but important for reducing energy consumption and realizing an economically viable application in industry. Herein, we developed a novel advanced copper terephthalate MOF (CuBDC) between graphene oxide (GO) layers using a simple space-confined growth strategy at room temperature. The inclusion of CuBDC@GO can realize high filler loadings while maintaining uniform dispersion throughout PDMS matrix. The paralled arranged CuBDC sheets created 1D inner vertical channels, along with the enlarged GO interlayer space for rapid molecule permeselective transport. The resultant mixed matrix membranes (MMMs) with 30 wt% CuBDC@GO loading improved the separation factor from 190.6 to 576.3, and simultaneously increased the total flux from 575.2 to 1357.4 g m -2 h -1 for separating 0.5 wt% butyl acetate at 40 °C. The transport mechanism was explained by adjusting the CuBDC content in composites to examine the significant increase in membrane permeability (from 12.5 to 58.3) and selectivity (from 0.7 to 2.0). Compared to alcohol or ketone, the larger size strip-like butyl acetate molecules are ideal for rapid transport through the CuBDC-supported 1D continuous inner channels, and effectively inhibit the movement of water molecules, ultimately resulting in the largest pervaporation performance improvement in butyl acetate/water separation. This CuBDC@GO prepared by a simple, green and room-temperature synthesis route can be widely applied to prepare defect-free membranes with excellent performance for sustainable applications. We also anticipate that this advanced space-confined growth strategy can be extended to various other MOFs and applications.
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Hongming Fu,Zhaohao Li,Yuntao Zhang,Heng Zhang,Haiping Chen
With the increasing demand for environmental protection, the recovery and reuse of fly ash has attracted more and more attention. In this paper, the fly ash based porous ceramic membrane is modified from hydrophilic to superhydrophobic successfully. Average contact angle and roll-off angle of the modified superhydrophobic fly ash based ceramic membrane are 151.3° and 11.3°, respectively. Additionally, a variety of performances of the prepared superhydrophobic fly ash based ceramic membrane are characterized. Dynamic process of droplets with different initial velocities impacting on the surface of superhydrophobic fly ash based ceramic membrane is photographed by high-speed camera. It is proved that dynamic process of droplet impacting on superhydrophobic surface includes spreading, retraction and partial rebound. Spreading, retraction and solid-liquid contact time of droplets are about 2.9 ms, 11.5 ms and 14.4 ms, respectively. The above data is almost unaffected by impact velocity of droplets. In addition, experiments show that the prepared superhydrophobic fly ash based ceramic membrane has good acid and alkali corrosion resistance , and self-cleaning performance. In this paper, superhydrophobic ceramic membrane prepared by fly ash shows excellent performance and it can provide guidance for the reuse of fly ash.
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高影响因子
Energy Technology
·
2022
·Vol. 10
·期 5
·2200070
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IF 4.149
Yizhong Chen,Chaosheng Shi,Jingfei Zhang,Yongqiang Dai,Yu Su,Bing Liao,Mingqiu Zhang,Xiaoming Tao,Wei Zeng
The most robust consensus related to ionic-hydrogel-based triboelectric nanogenerator (TENG) is that the charge density at the solid interface plays a pivotal role in its output performance. However, there has been no reliable evidence of the mechanism regarding the influence of ion enrichment on TENG. Higher surface charge density at the solid interface could result in higher output performance. Herein, the ionic hydrogel is prepared through polymerization reaction of the organic monomers with LiCl as the ionic conductor. The ion migration on the hydrogel surface is regulated via tuning the temperature difference between the top and bottom sides. Upon contacting with the upper electrode, more induction charges are induced on the cation-enriched surface of hydrogel, leading to a larger output of the TENG. At the temperature difference of 25 °C, the open-circuit voltage and maximum output power density is increased by 77% and 166% compared with the TENG without temperature field, respectively. When the temperature of the hydrogel surface is higher than 50 °C, the output performance of TENG would decrease due to the water loss of hydrogel. This research will advance further understanding of the mechanism of thermoelectric ionic conductors in TENGs, self-powered sensors, and wearable devices.
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高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
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2022
·Vol. 57
·期 6
·3503-3514
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IF 3.612
Ya-Xing Li,Chan Zhong,Hui-Zhen Zhang,Yuan-Yang Zhao,Mei Shu,Guo-Ping Wu
Summary A new gelatin-protocatechuic acid (PCA) film with Escherichia coli O157:H7 phage JN01 was developed and characterised. After incorporated with JN01, swelling value, water vapour permeability, water solubility and elongation at break of gelatin-PCA film were not significantly different. The addition of JN01 increased b value and transparency of film, while it decreased L value, a value and tensile strength of film. Moreover, the gelatin-PCA-JN01 film presented antioxidant activity of 60.07%. Furthermore, JN01 could be steadily released from gelatin-JN01 and gelatin-PCA-JN01 films in aqueous solution, and their release rates were 7.56% and 0.12% after 11 h, respectively. The microstructure analysis showed that JN01 particles were clustered and uniformly distributed in film, and the aggregation would be attenuated in the presence of PCA. Meanwhile, E . coli O157:H7 counts were 1.13 log 10 CFU mL −1 and 0.45 log 10 CFU mL −1 lower in gelatin-JN01 and gelatin-PCA-JN01 films compared with pure gelatin film in vitro at 4 °C for 24 h, respectively. After stored at 4 °C for 7 days, Escherichia coli O157:H7 counts were 1.00 log 10 CFU g −1 and 0.80 log 10 CFU g −1 lower in beef packed with these two gelatin films, compared with beef without gelatin film, respectively. In conclusion, the developed gelatin-PCA-JN01 film has potential application in food preservation.
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高影响因子
FOOD HYDROCOLLOIDS
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2022
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IF 11.504
Qais Ali Al-Maqtari,Adel Ali Saeed Al-Gheethi,Abduljalil D.S. Ghaleb,Amer Ali Mahdi,Waleed Al-Ansi,Abeer Essam Noman,Abdulqader Al-Adeeb,Aboudou Kabirou Olatoundé Odjo,Yuhang Du,Minping Wei,Weirong Yao
This study aimed to evaluate the influence of incorporating two concentrations of microcapsules containing Pulicaria jaubertii extract (MPJE) on the physicochemical, microstructure, and bioactivities properties of films based on chitosan (CH), gelatin (GEL), and CH50:GEL50 for possible use as active food packaging in the future. The MPJE treatment was compatible with the CH and/or GEL film without affecting chemical structures. Physico-mechanical results revealed that the CH50:GEL50 film showed optimal properties. The films blended with MPJE considerably improved in glass transition temperature and thermal stability. The films treated with MPJE presented high barrier property toward UV and visible light. Compared with that of the control films, the microstructure of the films loaded with MPJE had a rougher surface with homogeneous microcapsules, which increased with increasing MPJE concentration. Furthermore, mixing MPJE with CH and/or GEL led to the formation of high bioactive films with lower moisture content than the control films, suggesting that MPJE can be utilized to preserve lipid-rich foods .
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高影响因子
ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Jiaojiao Zhu,Man Guo,Yanhui Cui,Yingcai Meng,Jinsong Ding,Wenbin Zeng,Wenhu Zhou
Pulmonary delivery of anti-inflammatory siRNA presents a promising approach for localized therapy of acute lung injury (ALI), while polycationic vectors can be easily trapped by the negatively charged airway mucin glycoproteins and arbitrarily internalized by epithelial cells with nontargetability for immunological clearance. Herein, we report a material, the dopamine (DA)-grafted hyaluronic acid (HA–DA), coating on an anti-TNF-α vector to address these limitations. HA–DA was simply synthesized and facilely coated on poly(β-amino ester) (BP)-based siRNA vectors via electrostatic attraction. The resulting HA–DA/BP/siRNA displayed significantly enhanced mucus penetration, attributable to the charge screen effect of HA–DA and the bioadhesive nature of the grafting DA. After transmucosal delivery, the nanosystem could target diseased macrophages via CD44-mediated internalization and rapidly escape from endo/lysosomes through the proton sponge effect, resulting in effective TNF-α regulation. Meanwhile, DA modification endowed the coating material with robust antioxidative capability to scavenge a broad spectrum of reactive oxygen/nitrogen species (RONS), which protected the lung tissue from oxidative damage and synergized with anti-TNF-α to inhibit a cytokine storm. As a result, a remarkable amelioration of ALI was achieved in a lipopolysaccharide (LPS)-stimulated mice model. This study provides a multifunctional coating material to facilitate pulmonary drug delivery for the treatment of lung diseases.
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PubMed
高影响因子
Nano Energy
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2022
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IF 19.069
Min Wu,Xin Wang,Yifan Xia,Yan Zhu,Shunli Zhu,Chunyang Jia,Wenyu Guo,Qingqing Li,Zhengguang Yan
Conductive hydrogels have attracted tremendous attention for the next-generation electronic/energy/robotic application owing to their excellent mechanical and electrical properties, including stretchability, high conductivity, and stability. How to simultaneously realize their highly transparent, self-healing, antifreezing/antidrying, biocompatible and highly conductive features through a simple approach is still a challenge. Herein, the stretchable freezing-tolerant triboelectric nanogenerator (TENG) and strain sensor have been developed based on a transparent, long-term stable, and highly conductive gelatin/NaCl organohydrogel (GNOH), which is prepared via a facile immersion strategy in a glycerol/water binary solvent. The GNOH demonstrates superior merits of strain (300%), transparency (85%), high conductivity (1.6 S/m), freezing tolerance (−20 ℃), self-healing capability (91%), and environment stability (over 30 days). Furthermore, the wearable strain sensors enable the detecting, quantifying, and monitoring of human activities with high sensitivity of about 2.5 (strain of 0–200%). Meanwhile, the fabricated TENG in single-electrode mode can achieve excellent electrical outputs to power portable electronics when efficiently harvesting biomechanical energies, even at harsh cold temperature (−20 ℃). Additionally, a flexible self-powered calculator based on the arrayed TENG as touch panel is also explored for human-machine interaction (HMI). This study paves the way for potential applications in wearable electronics , healthcare monitoring, biomechanical energy harvesting and HMI.
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高影响因子
COMPOSITES PART B-ENGINEERING
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2022
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IF 11.322
Fukai Chu,Shuilai Qiu,Yifan Zhou,Xia Zhou,Wei Cai,Yulu Zhu,Lingxin He,Lei Song,Weizhao Hu
Owing to poor flame retardant efficiency and compatibility of traditional flame retardants, it is difficult to prepare unsaturated polyester resins (UPR) composites with excellent flame retardant properties. In this research, novel glycerol-based polymeric flame retardants (PCH 3 PG, PBPG and POPG) were synthesized. The effect of different side chains, phosphorus contents and combined structures on flame retardancy efficiency of UPR composites were explored. It has been found POPG was more conducive to improving char formation under high temperatures than PCH 3 PG and PBPG. However, PCH 3 PG and PBPG exhibited better flame retardant efficiency in flame retaradant UPR composites. Especially for UPR/PCH 3 PG, the flame retardant performance increased rapidly with increasing PCH 3 PG contents. With only 15 wt% of PCH 3 PG in UPR, UPR/PCH 3 PG 15% reached UL-94 V0 and 29% of LOI. When PCH 3 PG contents increased to 20 wt%, the LOI of UPR/PCH 3 PG 20% increased to 30%, and PHRR and THR were reduced by 67.93% and 57.22%, compared with pure UPR. The thermal degradation products and flame retardant mechanism in gaseous and condensed phase were studied. It was found the most efficient PCH 3 PG was mainly played flame retardant effect in gaseous phase , supplemented by the barrier effect of condensed phase. Additionally, the polymeric glycerol-based flame retardants exhibited good compatibility with UPR matrix. This work explores the high-efficiency flame retardant structures with good compatibility for UPR, promoting the wide application of UPR materials.
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高影响因子
OPTICAL MATERIALS
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2022
·
IF 3.754
Zehao Hu,Ting Chen,Zhixiang Xie,Chunxian Guo,Weihui Jiang,Yuanhong Chen,Yanqiao Xu
Microwave organic phase preparation of AgInS 2 quantum dots (QDs) is extremely essential to the large-scale, green and efficient preparation of AgInS 2 QDs. Here, commercial glycerol is used as the microwave absorber to prepare AgInS 2 QDs in nonpolar organic solvent octadecene at reaction temperature range of 100–180 °C. The AgInS 2 QDs can be obtained within 15 min and exhibit tunable photoluminescent properties. After decorating by ZnS layer, the prepared AgInS 2 @ZnS core/shell QDs emitted a bright orange-yellow light under ultraviolet light irradiation, and its quantum yield increased from 13.66% to 33.10%. Moreover, it exhibited excellent spectral tunability among the range of 608.0 nm–549.8 nm with the molar ratios of Zn/AgIn changed from 0 to 3. Finally, a WLED was fabricated by combining AgInS 2 @ZnS QDs and Y 3 Al 5-x Ga x O 12 :Ce 3+ phosphors with a blue chip, the color rendering index (CRI), correlated color temperature (CCT), and luminous efficiency (LE) of the device was 87.6, 3361 K, and 58.83 lm/W, respectively, indicating the great application prospect in illumination. The research explores a novel avenue for the fast and efficient synthesis of I–III–VI semiconductor QDs in nonpolar solvent via microwave method.
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高影响因子
Results in Chemistry
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2022
·
IF 0
Kunlin Liu,Jia-Neng Tan,Yulei Wei,Changkun Li,Yuqing Dou,Zhongfeng Zhang
Deep eutectic solvents (DESs) are a recently developed class of green, efficient, and versatile alternatives to traditional organic solvents in natural product extractions. Inspired by the emergence of natural DESs and their green nature, we herein optimized the experimental variables for the extraction of dopamine from purslane ( Portulaca oleracea L., POL) using DESs. Nine choline chloride (ChCl)-based DESs were tested to select the optimum solvent for ultrasound-assisted extraction (UAE), and the combination of ChCl:glycerol (1:2) with 30% water extracted more dopamine from POL than ethanol. The amount of dopamine in the extracts was quantified by HPLC equipped with a fluorescence detector. The influence of UAE treatment on the morphology of plant material was studied by SEM. Based on single-factor experiments, the UAE conditions were optimized by response surface methodology using the Box-Behnken design. The optimum conditions were: extraction time of 30 min, water content in DESs of 32%, temperature of 58 °C, and plant material-liquid ratio of 40 mg/mL, which resulted in 2.96 mg of dopamine per 1 g of POL. The percentage of water in DESs and the extraction temperature were the most significant factors influencing the extraction efficiency of dopamine from POL. The results of this study promote the application of DESs for green and efficient extractions of bioactive alkaloids and other target molecules from plant materials.
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RSC Advances
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2022
·Vol. 12
·期 7
·4408-4416
·
IF 4.036
Guanhao Liu,Jingyi Yang,Yibo Zhao,Xinru Xu
Novel modified MOF intercalated hydrotalcites was synthesized for catalyzing the conversion of glycerol into high value-added glycerol carbonate in this paper. [APmim]OH/ZIF-8 was prepared by encapsulating aminopropyl hydroxide imidazole ionic liquid in ZIF-8 and inserted in Ca–Mg–Al hydrotalcites with layered structures to prepare [APmim]OH/ZIF-8/LDH with strong basicity and high specific surface area. ZIF-8, [APmim]OH/ZIF-8 and [APmim]OH/ZIF-8/LDH were characterized by XRD, FT-IR, SEM and nitrogen adsorption–desorption. The results showed that the conversion rate of glycerol can reach 98.6% and the glycerol carbonate yield was 96.5% in the transesterification of glycerol with dimethyl carbonate catalyzed by [APmim]OH/ZIF-8/LDH when the molar ratio of DMC and glycerol was 3 : 1, the catalyst dosage was 3 wt%, the reaction temperature was 75 °C and the reaction time was 80 minutes. The glycerol conversion rate can still reach more than 90% after five reaction cycles.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Haofeng Hu,Fulin Luo,Qian Zhang,Ming Xu,Xin Chen,Zhihao Liu,Haodong Xu,Lei Wang,Fei Ye,Kui Zhang,Bin Chen,Song Zheng,Jia Jin
In wound treatment, severe bleeding and infection are always primary challenges. Therefore, it is highly desired to develop novel dressing with both hemostatic and antibacterial capability. Herein, a series of biocomposite hemostatic films (BHFs) based alginate/chitosan/collagen-berberine have been prepared and well characterized for further biofunctional study. We have demonstrated that the hemostatic and antibacterial activities were significantly enhanced by calcium/berberine dual-crosslinking system in the film. Through the synergistic effects, BHF-6B exhibited a shorter in vivo clotting and wound healing time than that of commercial dressing in rat tail amputation and full-thickness skin defect models. Additionally, BHF-6B showed excellent bacteriostatic activity with long-term effects. Moreover, hemolysis and cytotoxicity tests in vitro illustrated the prominent biocompatibility of the composite films. Notably, BHF-6B could be degraded quickly and completely in vivo . Overall, the present work indicated that the functionalized BHF-6B has great potential as an absorbable biomaterial for wound treatment.
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高影响因子
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