Advanced Membranes
·
2025
·
IF 9.5
Wenlong Ding,Haoyu Liu,Jiayi Liao,Tongtong Wang,Dongze Li,Yu Xu,Shiyu Zhou,Zhiqiang Wu,Wenhui Shi,Jiangnan Shen,Junbin Liao
Construction of homogeneous polymer ion-exchange membranes (IEMs) with suitable ion transport channels and stable structures is crucial to the separation of mono-/multi-valent anions. Amphoteric ion-exchange membrane (AIEM) is a special type of IEM that possesses unique properties due to the presence of both anion exchange groups and cation exchange groups. In this work, we have grafted 1-bromoheptane and 3-bromopropanesulfonate onto the poly(aryl ether sulfone) chain through nucleophilic substitution reactions. Unlike the IEM attaching different ion-change functional groups onto one side-chain, this kind of AIEM bears two kinds of ion-change functional groups on dual side-chains. The results show that the as-prepared AIEMs could maintain low water absorption (< 20%) and swelling ratios (< 11%). The optimal surface area resistance is 6.31 Ω∙cm 2 . The perm-selectivity (Cl − /SO 4 2− ) of the optimized PAES-TA/BS-0.85 AIEMs in a binary mixed solution system at 2.5 mA∙cm 2 could be achieved as high as 67.46, which is much higher than commercial ACS IEMs under the same conditions. Small Angle X-ray scattering reveals a distinct phase separation pattern within the AIEM matrix, which is due to the introduction of sulfonates to increase the hydrophilicity of the side-chains. The combined effects of pore size screening and electrostatic repulsion render the high selectivity of as-prepared AIEMs.
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Advanced Science
·
2024
·
IF 14.3
Jiaqi Miao,Alan C. H. Tsang
Manipulating small-volume liquids is crucial in natural processes and industrial applications. However, most liquid manipulation technologies involve complex energy inputs or non-adjustable wetting gradient surfaces. Here, a simple and adjustable 3D liquid manipulation paradigm is reported to control liquid behaviors by coupling liquid–air–solid interfacial energy with programmable magnetic fields. This paradigm centers around a hierarchical rectifier with magnetized microratchets, using Laplace pressure asymmetry to enable multimodal directional steering of various surface tension liquids (23–72 mN m −1 ). The scale-dependent effect in microratchet design shows its superiority in handling small-volume liquids across three orders of magnitude (10 0 –10 3 µL). Under programmed magnetic fields, the rectifier can reconfigure its morphology to harness interfacial energy to exhibit richer liquid behaviors without dynamic real-time control. Reconfigured rectifiers show improved rectification performance in the inertia-dominant fluid regime, i.e., a remarkable 2000-fold increase in the critical Weber number for pure ethanol. Moreover, the rectifier's switchable reconfigurations offer flexible control over liquid transport directions and spatiotemporally controllable 3D liquid manipulation reminiscent of inchworm motions. This scalable liquid manipulation paradigm promotes versatile engineering and biochemistry applications, e.g., portable liquid purity testing (screening resolution <1 mN m −1 ), logical open-channel microfluidics, and automated chemical reaction platforms.
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高影响因子
Food Production Processing and Nutrition
·
2024
·Vol. 6
·期 1
·1-15
·
IF 4
Liang Zijian,Zhang Pangzhen,Ma Wen,Zeng Xin-An,Fang Zhongxiang
An innovative Chardonnay wine flavored with black tea was prepared under optimal ultrasound conditions at 450.0 W for 22.6 min, and its physicochemical features, antioxidant power, total phenolic content, and volatile composition were systematically examined. A total of 165 phenolic and non-phenolic substances were characterized, including 27 newly formed phenolic substances and 10 non-phenolic substances that were not found in both black tea and Chardonnay wine. Catechin was found to be the phenolic compound with the largest amount detected, which was responsible for the potentiated antioxidant activities. The wine exhibited a profile of 44 volatile compounds, with 13 volatiles as odor-active compounds. Black tea infusion resulted in a decline in fruity, fermented and spicy aromas, but an increase in green and citrus odors, while ultrasound processing further intensified these odors. This study anticipated that ultrasound technology could hold promise for crafting flavored wines with heightened functionalities and appealing flavor profiles. Graphical Abstract Ultrasound-assisted infusion of black tea potentiated the antioxidant activity and enriched the volatile and phenolic profiles of Chardonnay wine.
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Advanced Healthcare Materials
·
2024
·
IF 10
Ziting Bao,Sheng Lu,Duo Zhang,Guanyu Wang,Xiaolin Cui,Guozhen Liu
Type 2 diabetes is rapidly emerging as a global public health problem. While blood glucose monitoring has been the primary method of managing diabetes for decades, the increasing global prevalence of the disease suggests that there might be a need to identify additional biomarkers for a more precise early diagnosis. Herein, a microneedle patch based wearable sensor is developed for the purpose of diabetic diagnosis. Utilizing methacrylic acid modified gelatin and polyvinyl alcohol in the fabrication of microneedles has improved their mechanical properties for skin penetration and increased swelling capacity for interstitial fluid extraction, thanks to the double crosslinking mechanism. The fabricated microneedles are further integrated with test paper functionalized with enzyme and dye molecules to detect multiple signature biomarkers of diabetes in vivo through a colorimetric reaction. Such a wearable microneedle patch holds significant promise for the real-time monitoring of various biomarkers related to chronic diseases and aging.
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CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Hailing Shi,Ruihao Ge,Kai Li,Kui Liu,Yixuan Wang,Fengyu Quan,Kewei Zhang,Xing Tian
Solar energy-driven water evaporation technology presents a sustainable method for seawater desalination and wastewater treatment. However, creating a biomass-based interfacial evaporator that achieves high salt resistance and rapid evaporation rates remains a significant challenge. In this study, we prepared a novel foam from carboxymethylated regenerated cellulose fibers, leveraging their natural orientation properties and excellent hydrophilicity. This foam featured hierarchically ordered water transport channels and numerous hydrophilic groups, which enhanced water transport efficiency and decreased the enthalpy of evaporation. The incorporation of polypyrrole gave it effective photothermal conversion properties. The foam demonstrated strong performance in solar-driven water evaporation, achieving an evaporation rate of 3.57 ± 0.04 kg m −2 h −1 under simulated sunlight conditions, with an evaporation efficiency of 93.8 ± 1.5 % and a notable ability to resist salt. This research provides a practical solution for sustainable desalination and holds great potential for the future development of desalination evaporators.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhiqing Hu,Peizhuang Wang,Jiaqi Shang,Li Zhang,Jiang Zhou,Lili Ren
Chitin nanofibers are widely used in many fields because of their biocompatibility , renewability and excellent mechanical properties. Herein, zwitterionically charged chitin nanofibers (ZC-ChNFs) were prepared from chitin via one step chemical modification (oxalic acid pretreatment) and subsequent ultrasound treatment. Effects of pretreatment time on size of the ZC-ChNFs and pH of ZC-ChNF suspensions on the thickness, porosity, refractive index and antireflective capacity of ZC-ChNF coatings were investigated. It was found that, by adjusting pH of the ZC-ChNF suspension, porosity and refractive index of the ZC-ChNF coatings could be controlled. The ZC-ChNF coatings fabricated with smaller ZC-ChNFs had higher antireflective performance and the transmittance gain of a glass with a ZC-ChNF coating was about 3.5 % at a wavelength of 550 nm compared to the bare glass. The results of this work provide a promising pathway to fabricate antireflective coating with ZC-ChNFs just by controlling the pH of ZC-ChNF suspensions.
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DESALINATION
·
2025
·
IF 9.8
Renpan Xing,Xin Zhong,Jing Wu,Zijun Zhang,Hui Huang,Weizhan Zhong,Ming Li,Weiming Wang,Jun Xiong
Interfacial solar evaporation technology (ISET) holds significant promise for mitigating freshwater scarcity through solar-driven desalination. However, the advancement of solar evaporators that employ straightforward methods to enhance the evaporation rate (ER), improve salt resistance, and facilitate the collection of salt crystals poses a considerable challenge for ISET. In this study, we developed a photothermal material (PTM) named polypyrrole-polyester filter cotton (PPy-PFC), achieved by coating polypyrrole (PPy) onto polyester filter cotton (PFC) using a simple solution immersion technique. The PPy-PFC effectively reduces the enthalpy of water evaporation, resulting in an impressive ER of 2.44 kg m −2 h −1 under 1-solar intensity. The polyester fiber bundle (PFB) incorporates vertical water supply channels and acts as a water pump. When multiple PFBs are employed to deliver water to the PPy-PFC, it can consistently evaporate 20 wt% saltwater with an ER of 1.95 kg m −2 h −1 . This remarkable salt resistance performance is attributed to the ample water supply delivered by the multiple PFBs, which facilitates the diffusion backflow of salt ions. Additionally, by positioning a single PFB at the center of the PPy-PFC, a unidirectional saltwater-flowing evaporator is constructed. Crystallized salt forms around the single PFB with a radius of 1.5 cm, achieving zero liquid discharge (ZLD). This study presents a novel strategy for designing solar evaporators that improve ER by reducing the enthalpy of water evaporation, enhancing salt resistance through sufficient water supply, and enabling the collection of salt crystals via the establishment of a unidirectional saltwater-flowing channel.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Wei Li,Siyuan Cao,Xu Yin,Qi Zhang,Liankai Gu,Hongwei Zhu,Kajia Wei,Weiqing Han
Seeking efficient and facile methods for precise oxygen vacancy (Ov)-content regulation is challenging for practical application. Herein, we propose a confinement-based Ov optimization strategy, and construct Fe 3 O 4 with controllable Ov confined in S-doped mesoporous carbon (Fe 3 O 4 @SMC) catalyst to enhance nonradical oxidation of PMS. The confinement effect induced the O 2p orbitals p-band-center shift in Fe 3 O 4 @SMC, which promoted Ov formation, thus achieving 100 % BPA degradation within 9 min via an electron-transfer process (ETP) dominated nonradical pathway with a 125.8-fold higher k obs value than unconfinement catalyst. Ov content variation under confinement, triggered by tuning confined support defect level, steered nonradical transition from single-electron-activated singlet oxygen route to two-electron-transferred ETP pathway, which improved selectivity (> 95 % of electron-rich pollutants removal), adaptability and durability (10 h continuous-flow operation) of catalyst. This work paves the way for modulating Ov in iron-oxides via confinement engineering and offers new insights into the Ov-induced mechanism in confined environments.
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Foods
·
2025
·Vol. 14
·期 18
·3188
·
IF 5.1
Rui Liao,Xiongjun Xiao,Huiling Huang,Kangjie Yu,Jianxia Tan,Yue Wang,Cong Li,Siyu Li,Yi Ma
This study investigated the potential of yeast polysaccharides (YPs) as an SO 2 substitute by adding varying concentrations (0–250 mg/L) prior to wine fermentation. The antioxidant activity and color stability were evaluated using UV–visible spectrophotometry, high-performance liquid chromatography, and colorimetric methods. Furthermore, HS-SPME-GC-MS and quantitative descriptive analysis were employed to compare the volatile compound profiles and sensory attributes between the optimal yeast polysaccharide treatment group (TS100, 100 mg/L) and the sulfur dioxide treatment group (S). Results showed that YPs addition effectively preserved phenolic compounds, with TS100 exhibiting the highest total phenols, flavonoids, and anthocyanins, where total anthocyanins reached 340.79 mg/L, a 2.52% increase over the S group. ABTS + scavenging activity showed no significant difference from the S group, confirming strong antioxidant capacity. Flavor compound content was higher in TS100 (10,458.99 μg/L) than in the S group (10,156.07 μg/L), with ethyl caprylate and ethyl decanoate being particularly prominent. These esters contributed intense fatty and fruity aromas, enhancing the overall sensory quality of the wine. In summary, 100 mg/L YPs addition yielded the best wine quality, demonstrating promising potential as an SO 2 alternative in winemaking.
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