JOURNAL OF MOLECULAR LIQUIDS
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2025
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IF 5.2
Huibing Dai,Maoqian Hu,Ning Zhu,Lijun Song,Hailong Hong
Deep eutectic solvents (DES) are regarded as eco-friendly alternatives for extracting bioactive substances from natural products. In this study, the DES with varying compositions were employed to extract flavonoids from Artemisia argyi H.Lév. & Vaniot ( A. argyi ) with the assistance of ultrasound, and optimized the extraction conditions through a Box-Behnken design (BBD). The results indicated that the choline chloride (ChCl) / lactic acid (LAC) (molar ratio 1:2) was the best DES for extracting flavonoids from A. argyi with an extraction power of 150 W. The optimal process condition was identified as DES with a water content of 40.0 %, a material-liquid ratio of 1:22.4 g·mL −1 , and the extraction temperature of 44.8 °C. This method demonstrated superior performance compared to the traditional ethanol method. The biological activities in vitro revealed that the extracts exhibited desirable antioxidant activity, and the extraction mechanism of flavonoids was investigated by density functional theory. Furthermore, five distinct types of macroporous resins (HPD826, AB8, YKDH-3, D101, and NKA-9) were selected for the recovery of DES. YKDH-3 exhibited the strongest adsorption capacity, and HPD826 the weakest. The extraction rate of recycled DES reached 84.5 %, the number of recycling was up to more than 6 times. In short, this method, combined with macroporous resin enrichment, can be used as an alternative method for green and efficient extraction of bioactive flavonoids from plants.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Xing Cheng,Yue Tang,Xiaohuan Huang,Linghui Huang,Han Tao,Yuangen Wu
Artificial enzymes have attracted much attention in food analysis because of their simple preparation, low cost, and strong stability. However, the most used artificial enzymes are based on oxidoreductases such as oxidase, peroxidase, catalase, and laccase. There are few reports on hydrolases like phosphatase for food analysis. Herein, a novel green zirconium-glutamic acid (Zr(IV)-Glu) complex was prepared using Zr ions and glutamic acid. The Zr(IV)-Glu complex was first found to possess excellent phosphatase-like activity, which was used to establish a fluorescent sensor for detecting phytic acid (PA). The Zr(IV)-Glu complex can catalyze the hydrolysis of 4-methylumbellione phosphate disodium salt (4-MUP) to produce blue fluorescent products with fluorescence emission peaks at 448 nm. PA with six phosphate groups can attach on the surface of Zr(IV)-Glu to form Zr-O-P bond and inhibit the catalytic activity of Zr(IV)-Glu, leading to the decrease of fluorescence in the system. The change of fluorescent intensity at 448 nm was positively correlated with the PA content, so that a fluorescent sensor using the phosphatase-like activity of Zr(IV)-Glu was proposed to detect PA. The established sensor has high sensitivity, low detection limit (LOD) of PA to 58 μg·L -1 , strong anti-interference ability, and excellent selectivity. This work can provide a new method for PA detection in food and further expand the application of phosphatase mimics.
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JOURNAL OF APPLIED ELECTROCHEMISTRY
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2024
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IF 2.4
Zhang Ruixuan,Wang Qiushi,Chen Liang,Zhang Jun,Liu Zhaoping
Due to the intrinsic structural stability, materials with polyanionic framework have attracted worldwide attention to build-up aqueous metal-ion batteries for large-scale energy storage. Anion-dependent electrochemical behaviors of graphene-modified Na 3 V 2 (PO 4 ) 3 (rGO/NVP/C) with rhombohedral structure have been explored. Compared to common saturated solutions, remarkable improvements on overall the electrochemical performances have been achieved in novel deep eutectic solvents (DES) based on methylsulfonylmethane, perchloride salts and water. A high-voltage aqueous lithium-ion battery consisted of rGO/NVP/C nanomaterials as cathode materials and carbon-coated NbOPO 4 as anode materials (rGO/NVP/C||DES-Li||NbOPO 4 ) exhibits a specific energy of 74 Wh kg −1 with a voltage output up to 1.8 V and excellent capacity retention that is above 80.1% after 600 cycles at 2 C current density. Kinetic studies have clearly shown that Li + (de)intercalation in rGO/NVP/C in DES is dominated by a diffusion-controlled process. During the repetitive Li + (de)intercalation, a phase transformation from Na 3 V 2 (PO 4 ) 3 phase into Li 2 NaV 2 (PO 4 ) 3 is identified. The negligible changes of lattice volume within Na 3 V 2 (PO 4 ) 3 during Li + (de)intercalation, and the wide electrochemical window of DES together with the low activity of water in DES enable the long cycle life of rGO/NVP/C||DES-Li||NbOPO 4 . Graphical abstract
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JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2024
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IF 2.2
Zhang Fangfang,Zuo Yuanyuan,Wu Degang,Yang Guanda,Schubert Dirk W.,Nie Lin
This study explores the surface modifications and properties of magnesium substrates through the application of alumina coatings for improved functionalities. Surface microstructures were investigated using a field emission scanning electron microscope after roughening treatments and alumina spray coatings. Elemental mapping revealed the distribution of coatings, demonstrating successful modifications with silane coupling agent and uniform alumina distribution. Contact angle measurements showcased enhanced hydrophobicity post-alumina coating, with notable improvements in contact angles over various liquids and self-cleaning assessments. Furthermore, wear resistance tests indicated the durability of the alumina coatings, displaying high stability even after repeated abrasions with sandpaper. The self-cleaning tests unveiled the remarkable performance of alumina-coated surfaces in repelling contaminants, underscoring their effective self-cleaning characteristics. Furthermore, the electromagnetic wave absorption properties of magnesium substrates coated with alumina demonstrated outstanding absorption efficiency, notably within the 7-11 GHz frequency range. This comprehensive analysis highlights the potential and effectiveness of alumina coatings in enhancing the properties of magnesium sheets, specifically in improving hydrophobicity, wear resistance, self-cleaning capabilities, and electromagnetic wave absorption.
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WATER RESEARCH
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2024
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IF 11.4
Yuanping Fang,Congli Chen,Bin Cui,Haiyan Li,Dandan Zhou
Frequent occurrence of trace antibiotics in reclaimed water is concerning, which inevitably causes aquifer contamination in the case of managed aquifer recharge (MAR). Global governments have formulated strict reclaimed water standards to ensure the safety of water reuse. Recent studies have found that improved antibiotics removal is intimately associated with high ammonia-oxidizing activity. However, the role of NH 4 + -N in the removal of residual antibiotics of reclaimed water during MAR remains unknown. NH 4 + -N removal and the effects of ammonia oxidation on antibiotics biodegradation in the aquifer are the most significant facts for solving the above collision. In this work, the effects of NH 4 + -N (0, 1 and 5 mg/L) in a model refractory antibiotic (oxacillin (OXA), 100 μg/L) attenuation were deciphered by employing three individual simulated MAR columns, which so called N0, N1 and N5. The results showed that 5 mg/L NH 4 + -N in influent upregulated the abundance of amo genes by 28.9 %-68.0 % in N5. And the enriched functional genes encoding key degradation enzymes enhanced the OXA removal by 18.7 % and alleviated the oxidative stress caused by antibiotics. Subsequently, antibiotic resistance genes (ARGs), mobile gene elements (MGEs) and human bacterial pathogens (HBPs) abundance were all significantly decreased. Moreover, the intimate association between ammonia-oxidizing microorganisms (AOM) and candidate OXA degraders based on microbial network analysis further supported the significance of AOM on OXA biodegradation. This study provides comprehensive evidence that appropriate amounts of NH 4 + -N are beneficial in antibiotics and antibiotic resistance risk reduction, providing compelling insights for refine NH 4 + -N recharge limitation.
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ANALYTICA CHIMICA ACTA
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2024
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IF 5.7
Chiyu Ma,Yong Qiu,Tao Liang,Nan Jiang,Liubing Kong,Jianguo Wu,Xianyou Sun,Guangqing Ren,Xinwei Wei,Ping Wang,Hao Wan
Background Ionic calcium (Ca 2+ ) plays a crucial role in maintaining normal physiological and biochemical functions within the human body. Detecting the concentration of Ca 2+ is of utmost significance for various purposes, including disease screening, cellular metabolism research, and evaluating drug effectiveness . However, current detection approaches such as fluorescence and colorimetry face limitations due to complex labeling techniques and the inability to track changes in Ca 2+ concentration. In recent years, extensive research has been conducted in this field to explore label-free and efficient approaches. Results In this study, a novel light-addressed potentiometric sensor (LAPS) using silicon-on-sapphire technology , has been successfully developed for Ca 2+ sensing. The Ca 2+ -sensitive LAPS achieved a wide-range detection of Ca 2+ , ranging from 10 −2 M to 10 −7 M, with an impressive detection limit of 100 nM. These advancements are attributed to the ultra-thin silicon layer, silicon dioxide layer, and solid-state silicon rubber sensitive membrane around 6 μm. Furthermore, the sensor demonstrated the ability to dynamically monitor fluctuations in Ca 2+ concentration ranging from 10 −9 M to 10 −2 M within a solution. Its remarkable selectivity , specificity, and long-term stability have facilitated its successful application in the detection of Ca 2+ in human serum and urine. Significance and novelty This work presents a Ca 2+ -sensitive sensor that combines a low detection limit and a wide detection range. The development represents the emergence of a label-free and rapid Ca 2+ detection tool with immense prospects in home-based health monitoring, community disease screening, as well as cellular metabolism, and drug screening evaluations.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yadan Song,Songsong Zhi,Hongju Wang,Qian Yang,Jing Guo,Can Yang,Kai Jiang,Dapeng Wu
A solid-state pulsed laser technique was developed to in situ grow arbitrary immobilized catalysts (Fe 3 O 4 , CeO 2 , WO 3 etc.) on the inner surface of quartz tube with robust adhering strength. In a case study, anatase/rutile hetero-phase TiO 2 film was deposited to serve as immobilized photocatalysts for the effective removal of antibiotics from aqueous environment. The X-ray absorption spectroscopy, low temperature electron paramagnetic resonance and the density functional theory simulation directly confirm a defect-assisted type-II band alignment was established to facilitate the charge transfer at the hereto-interphase. In addition, the oxygen vacancy enriched anatase phase with greater binding energy towards the dissolved oxygen facilitated the O 2 – generation. Meanwhile, the rutile phase enriched with Ti 3+ could effectively activate the antibiotics to promote the direct h + mediated oxidation. Such integration of unique atomic vacancies prevent defects from becoming electron-hole recombination centers and consequently extend the lifetime of the photoexcited charge carrier. The degradation mechanism of oxytetracycline was thoroughly examined by ultra-high resolution electrospray time-of-flight mass spectrometry and Fukui function, while the ecological structure–activity relationships program assessed the toxicity of contaminant to the environment. Milewhile, a continuous water treatment apparatus employing the catalytic tubes as reactors was established and demonstrated a ∼ 95 % OTC degradation under the natural sunlight adopting river water as the background. The experimental studies also claimed that ∼ 90 % of the initial activity could be retained after 100 cycles reuse, which permits their great potential for the applicational scenarios.
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JOURNAL OF MOLECULAR LIQUIDS
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2024
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IF 5.3
Li Fu,Guoman Lin,Yu Chen,Qiuxiang Zhou,Wenlong Feng,Jiaqi Wang,Fengjiao Liu,Jiahe Chen,Jingjing Guo
Deep eutectic solvent (DES) has become a potential protein extractant as its good biocompatibility, environmental friendliness and accessibility. In this study, two types of DESs, ferric chloride hexahydrate: oxalic acid (FeCl 3 ·6H 2 O: H 2 C 2 O 4 ) and choline chloride: zinc chloride (ChCl: ZnCl 2 ), were prepared. The interactions between these two types of DESs and bovine serum albumin (BSA) were investigated by utilizing spectroscopic and electrochemical methods. It was found that both FeCl 3 ·6H 2 O: H 2 C 2 O 4 and ChCl: ZnCl 2 are able to form complexes with BSA by a relatively high affinity. During the process, no significant change in BSA conformation was observed. The binding ratios of BSA in the FeCl 3 ·6H 2 O: H 2 C 2 O 4 and ChCl: ZnCl 2 systems are up to 98.59 % and 98.14 %, respectively, indicating that the two DESs are both promising extractants for BSA. The interactions between the DESs and BSA are mainly hydrogen bond and van der Waals force, which are strong enough to extract BSA but not too strong for regeneration, making the DESs more applicable in the industry. Moreover, it was found that the binding ratio of BSA in the FeCl 3 ·6H 2 O: H 2 C 2 O 4 -BSA system remains above 91.7 % in the temperature range of 298–313 K, illustrating the potential of FeCl 3 ·6H 2 O: H 2 C 2 O 4 to be used in BSA extraction under a wider range of temperature. In contrast, ChCl: ZnCl 2 will be better used under lower temperatures.
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Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Wen Leng,Jiaopeng Lai,Cao Yang,Yanpeng Zhu,Jian Wang,Lihui Yang,Sihao Lv
ABSTRACT Interface engineering is an effective strategy for improving the catalytic activity of electrocatalysts. Herein, an enhanced binder-free Ti 4 O 7 electrode doped with waste MOF-recycled N-doped carbon polyhedrons (Dr-CN) was developed and denoted as Dr-CN@Ti 4 O 7 . The chemical-bond formation at the interface of Ti 4 O 7 and Dr-CN led to a significant acceleration of charge transfer and higher •OH yield at 1.55-2.75 times rate in comparison with pristine Ti 4 O 7 . At 0.5%Dr-CN@Ti 4 O 7 electrode, the oxidation rate of tetracycline (TCH) was about 3 times that of pristine Ti 4 O 7 , especially when doped with 2 wt% Dr-CN, the kinetic rate can be comparable to that of BDD electrode. Furthermore, the 0.5%Dr-CN@Ti 4 O 7 anode exhibited desirable stability and durability in consecutive 20 cycle tests and was shown to effectively mineralize refractory organic matters in actual livestock and coking wastewater. Energy consumption for TCH removal by 0.5%Dr-CN@Ti 4 O 7 electrode was calculated as 3.02 kWh m -3 , with a 73.5-77.6% reduction compared to some previous electrodes. These results suggested that the interface chemical-bonded engineering strategy via doping MOF-derived carbon can effectively improve the Magnéli-phase Ti 4 O 7 electrode with satisfying electrochemical reactivity and stability.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2024
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IF 3.5
Mengmeng Yang,Yang Ding,Zhaofeng Chen,Qiong Wu,Lihao Liu,Tianlong Liu,Manna Li,Kai Xu,Lu Le,Lixia Yang
As promising candidates for widespread application, advanced ceramic fiber mats with robust mechanical properties are urgently needed. However, the brittleness, fatigue failure, and large density of ceramic fiber pose significant obstacles to its practical application. Herein, a novel SiO 2 aerogel/ZrO 2 composite nanofibrous membrane (SZCNFM) with excellent flexibility was prepared by introducing SiO 2 aerogel nanoparticles into ZrO 2 nanofiber via simple co-electrospinning. The developed tetragonal zirconia phase without changing up to 1200°C endows SZCNFM material with excellent thermal stability. Furthermore, the as-prepared membranes exhibit fatigue resistance ability which can maintain 98% of the original stress after 100 buckling cycle tests. The addition of mesoporous structure aerogel reduces the heat transfer of the nanofibrous membrane, giving its low thermal conductivity (30 mW/m/K) and low-frequency sound absorption (noise reduction coefficient of 0.52). Combined with the high-temperature resistance, low thermal conductivity and excellent sound-absorption ability make it a promising material for heat insulation and acoustic absorption.
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LANGMUIR
·
2024
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IF 3.7
Ze Qiu,Yingzhangyang Liu,Wencai Cheng,Congcong Ding
In this research, we focus our attention on the leaching peculiarity of uranium-containing Mg–Al layered double hydroxide (LDH) which is one kind of waste sediment in uranium tailings, generated by the alkalinization of uranyl raffinate. The effect of inorganic (CO32–, SO42–, PO43–) and organic (C2O42–, C6H6O72–, C6H16O24P62–) anions were investigated. Atomic force microscopy result showed that the thickness of CO32–-LDH increased to 8.6 nm compared to original LDH whose thickness was 6.7 nm. Compared with the control sample (5.58 μm), the grain size with C6H16O24P62– anion grew to 7.04 μm. A large amount of CO32– can stay in LDH, up to 1.78 mol percent, while the C6H16O24P62– anion was only 0.41 mol percent. X-ray diffraction results showed that the anions could change the crystal structure of LDH, especially the C6H18O24P6 anion, and theoretical calculation also conformed this result. The leaching tests showed that the introduction of anions improved the leaching efficiency of UO22+ from LDH. The introduction of anions destroyed the super buffer property of LDH. Theoretical calculation results indicated that the anions could grab UO22+ and help the UO22+ escape from the LDH. This research gave guidance for long-term disposal of uranium-containing tailings.
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Food Chemistry-X
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2024
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IF 6.5
Alsadig Yahya,Abdeen Elkhedir,Mamoun A. Homaida,Yassin Haran,Ikhlas Galal-Eldin,Yassin Taha,Ezzalden Saleh
Potatoes are an important food crop worldwide and are rich in essential nutrients. However, cooking can reduce their nutritional value and alter their texture. This study aimed to investigate the impact of pretreating potato slices with lemon juice. The slices were immersed in 5% lemon juice solution for 3 h, rinsed with distilled water for another 3 h, then cooked at 100°C for 20 min. Findings revealed that lemon juice pretreatment (LJP) notably improved the texture, mouthfeel, and overall acceptability of the cooked potato slices of different sizes (CPS-Ds). Additionally, LJP significantly increased vitamin C and total phenolic contents, slightly decreased pH levels, and preserved the desired color of CPS-Ds. Consumer sensory evaluations also indicated a positive response to LJP samples, suggesting its potential application in the food industry. The study confirmed that LJP is an effective, sustainable, consumer-friendly, and cost-efficient technique for improving the quality of cooked potato slices.
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危险品化学品经营许可证（带存储）