JOURNAL OF MEMBRANE SCIENCE
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2023
·
IF 9.5
Na Xing,Xiao Pang,Qingrui Meng,Zhong Gao,Leilang Zhang,Sijia Wang,Ziwen Liu,Yan Kong,Cuiting Ding,Hong Wu,Zhongyi Jiang
Proton exchange membranes (PEMs) are the core components of electrochemical hydrogen energy production, storage and conversion devices. It is a great challenge to develop PEMs with a combination of high proton conductivity, minimal H 2 crossover and mechanical robustness for achieving high efficiency and long-term stability in these devices. Here, a co-assembled PEM composed of ionic covalent organic framework (iCOF) nanosheets and functionalized graphene oxide (GO) nanosheets was presented. The iCOF (TpPa-SO 3 H) nanosheets and polydopamine-modified graphene oxide (DGO) nanosheets were co-assembled into TpPa-SO 3 H/DGO mixed nanosheets with ultrahigh aspect ratio, which were readily further processed into TpPa-SO 3 H/DGO co-assembled membranes. The abundant and uniformly distributed –SO 3 H groups on TpPa-SO 3 H nanosheets and the acid-base pairs formed between TpPa-SO 3 H and DGO nanosheets promoted proton conduction significantly. Additionally, the dense structured DGO nanosheets inhibited H 2 crossover remarkably, and the multiple interactions between TpPa-SO 3 H and DGO nanosheets enhanced mechanical strength . The resultant TpPa-SO 3 H/DGO co-assembled membrane exhibited an ultrahigh proton conductivity of 916.4 mS cm −1 (80 °C, 100% RH), an unprecedently low H 2 crossover of 9.7 barrer and a sufficient tensile stress of 87.8 MPa. The enhanced proton conduction and H 2 barrier property led to enhanced performance in both electrochemical hydrogen compression and single hydrogen fuel cells.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Xiaoyi Pu,Xin Wang,Youping Liu,Xin Di
In this work, a novel deep eutectic solvent composed of thymol and octanol was synthesized and employed as a green extractant for ultrasound-assisted dispersive liquid–liquid microextraction (UA-DLLME) of three quinolones in environmental water followed by HPLC-UV analysis. Parameters affecting UA-DLLME were investigated and optimized. The optimal DES ratio was 2:1, the volume was 150 μL, ultrasonic time was 5 min, and the NaCl concentration was 0.68 mol·L -1 . Good linearity was obtained over the concentration range of 1–100 ng·mL −1 with R 2 ≥ 0.9986. The limits of detection (LOD) were 0.1–0.3 ng·mL −1 and the limits of quantification (LOQ) were 0.4–1.0 ng·mL −1 with RSD less than 4.8%. The method was fast, sensitive and eco-friendly, which offered a new way to monitor quinolone levels in environmental water.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Xinmiao Wang,Qian Wang,Dong Cai,Jinghan Yu,Xiaoyang Liu,Fawen Yin,Dayong Zhou
Phenolic esters are considered as promising functional food ingredients. However, their digestion, absorption and metabolism are still unclear. Tyrosol acyl esters (TYr-Es), hydroxytyrosol acyl esters (HTy-Es) and alkyl gallates (A-GAs) were hydrolyzed by carboxylesterase in plasma and exhibited slow release of polyphenols (phenolic acids). In vitro hydrolysis degrees initially increased and then decreased with the increasing carbon chain length (C2-C16). TYr-Es exhibited higher hydrolysis degrees compared to HTy-Es, and hydrolysis degrees of TYr-Es and HTy-Es were markedly higher than those of A-GAs. Due to the fast hydrolysis rates of TYr-Es and HTy-Es, they were undetectable in all rat plasma samples collected at several times within 24 h after administration. Whereas, A-GAs could be detected in rat plasmas and three absorption peaks were found in the pharmacokinetic profiles. Importantly, the T 1/2 , MRT, AUC 0-∞ , AUC 0-t in octyl gallate group were longer (or stronger) than those in propyl gallate and dodecyl gallate groups.
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高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xingle Guo,Xiaojiao Zheng,Xu Guo,Junxue Wu,Xu Jing
Emulsive liquid–liquid microextraction (ELLME), a simple, rapid, and environmentally friendly technique, was established to identify chiral prothioconazole and its chiral metabolite in water, juice, tea, and vinegar using ultra-high-performance liquid chromatography (UPLC). Environmentally friendly extractant was mixed with pure water to prepare a high-concentration emulsion, which was added to samples to complete the emulsification and extraction in 1 s. Afterward, an electrolyte solution was added to complete the demulsification without centrifugation. ELLME did not use dispersants compared to the familiar dispersive liquid–liquid microextraction (DLLME), thus reducing the use of toxic solvents and avoiding the effect of dispersants on the partition coefficient. The linear range was from 0.01 to 1 mg/L. The limit of detection was 0.003 mg/L. The extraction recoveries ranged from 82.4 % to 101.6 %, with relative standard deviations of 0.7–5.2 %. The ELLME method developed has the potential to serve as an alternative to DLLME.
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高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Jia Ma,Jiang-Hua Zhang,Hua-Wei Zhang,Qian-Qian Du,Zi-Xuan Li,Zhi-Fei Yang,Sha-Sha Yang,Da-Yong Zhou
It is of great importance to develop a most efficient, recyclable, and ecofriendly process to produce novel structured phospholipid emulsifiers. Herein, innovative medium-chain structured phospholipid (MCSPL) emulsifiers were synthesized through transesterification of soybean lecithins with medium-chain fatty acids (MCFAs) promoted by Zn- or Al-incorporated Fe 3 O 4 @SiO 2 , denoted by Fe 3 O 4 @SiO 2 /M (M = Zn or Al). Resultingly, Fe 3 O 4 @SiO 2 /M (M = Zn or Al) exhibited the most superior reactivity with 97.1% or 88.7% MCFA incorporation to other benchmark catalysts and also had excellent magnetic separability and recyclability. Noticeably, targeted MCSPLs possessed almost more superior emulsifying properties to other phospholipid emulsifiers, and had potential for use as oil–in–water emulsifiers. Conclusively, the present findings demonstrate that transesterification promoted by Fe 3 O 4 @SiO 2 /M (M = Zn or Al) can be a promising approach for green, economic, and highly effective synthesis of novel dual-function phospholipid emulsifiers with bioactive and emulsifying properties in food, pharmaceutical, and cosmetic industries.
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Food Bioscience
·
2023
·
IF 5.2
Kaiyong Yao,Qile Xia,Yan Cao,Bindan Chen,Jie Cai,Chenxing Liu
Yellow wine lees (YWL) are the main byproduct in the yellow wine brewing and can be used as animal feed. The deficiencies in fiber digestibility and amino acid equilibrium of YWL limited its utility value in animal feeding. The nutritional profile of YWL could be moderated after fermentation treatment. We fermented YWL with Candida utilis KF01 and Bacillus subtilis KF02, whose genomes were sequenced. We set three groups in the animal test with 15 Holstein cows : control, YWL, and fermented yellow wine lees (FYWL) group. 206 and 5 amino acid metabolism-related KEGG pathways, as well as 5257 (639 GO and 4618 eggNOG annotations) and 1579 (372 GO and 1207 eggNOG annotations) amino acid metabolism-related gene annotations were found in C. utilis KF01 and B. subtilis KF02. The collected milk samples were analyzed for composition. The contents of mono-unsaturated fatty acid (MUFA, 36.90% relative content), poly-unsaturated fatty acid (PUFA, 5.63% relative content), and essential amino acid (EAA, 2.01%) in the FYWL group milk were significantly (P < 0.05) higher. The content of flavor substances in the FYWL group (146.33 ng/mL) was the highest, followed by the control (89.19 ng/mL) and the YWL group (41.36 ng/mL). The principal component analysis (PCA) result presented the intra-group variations in flavor substances and differences in single substance among all groups. Feeding FYWL had significant effects (P < 0.05) in the Holstein cows on the milk composition.
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 32
·10965-10972
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IF 6.4
Mingming Liu,Qun Wan,Xinrong Liao,Wenji Zhan,Changwei Yuan,Qinggang Zhang,Mengda He,Cong Zou,Meitian Pan,Long Kong,Liang Li
Perovskite nanocrystals, which are well-known for their outstanding optoelectronic properties, have attracted widespread attention for several photonic and optoelectronic technologies. However, the inherent instability of perovskite nanocrystals limits their practical applications. Therefore, herein, we developed a calcium- and fluorine-ion combined-treatment method to enhance the stability of perovskite nanocrystals, which not only exhibited near unity photoluminescence efficiency and cubic morphology, but also possessed excellent photostability and thermal resistance. Additionally, the light-emitting diodes incorporating these perovskite nanocrystals showed pure green electroluminescence with a maximum external quantum efficiency of 11.85%, luminance as high as 20 940 cd m−2, and stable operation for up to 172 min.
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JOURNAL OF MOLECULAR LIQUIDS
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2023
·
IF 6
Jiangping Cao,Yifei He,Xiaoshuo Zhang,Lei Shi,Baizhao Zeng,Faqiong Zhao
Deep eutectic solvents (DESs) are new alternative solvents used in sample preparation for dissolution, extraction and preconcentration of analytes. In this work, a tributyl phosphate (TBP)-based hydrophobic deep eutectic solvent was applied in the liquid–liquid microextraction (LLME) of total parabens in beverages. The sample preparation procedure consisted of two main steps: the phase transfer catalyst-assisted alkaline hydrolysis of parabens and the LLME of parabens’ hydrolysate p-hydroxybenzoic acid (PHBA). The hydrolysis procedure was improved efficiently by the addition of phase transfer catalyst and the extractant became greener as the natural lauric acid (LauA) was used as the component of the DES . It was verified that the DES composed of TBP and LauA (3:1, mol/mol) was the most effective option for PHBA extraction. Response surface methodology (RSM) based on Box-Behnken design (BBD) was adopted to optimize the predominant experimental conditions. The proposed method provided satisfactory linearity (R 2 ≥ 0.9991), detection limits (0.02 μmol/L), precisions (RSDs ≤ 4.5%), recoveries (85.2% to 104.6%) and negligible matrix effects, which offered a promising way for screening total parabens in various beverage samples.
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MINERALS ENGINEERING
·
2023
·
IF 4.8
Junlian Wang,Lu Liu,Guodong Xu,Fan Li
Highly selective extraction of Pd from leaching liquor of spent auto-catalysts is a research hotspot in recent years. In this study, three novel octanethioic acid alkyl amide extractants (alkyl = butyl TA-804, hexyl TA-806 and 2-ethylhexyl TA-826) were designed, synthesized and characterized by 1 H NMR, FT-IR and ESI-HRMS. The effect of contact time, extractant concentration, HCl concentration and diluents on Pd selective extraction and separation by these three extractants were investigated. The stripping behaviors of the loaded Pd in the organic phase were examined. The McCabe-Thiele diagrams of Pd extraction and stripping were drawn. The extraction mechanism was studied through methods of stoichiometry calculation, slope analysis, FT-IR and ESI-HRMS. In the end, the Pd separation from simulated leaching liquor of spent auto-catalysts by TA-804, TA-806 and TA-826 was carried out. The results show TA-826 has much slow Pd extraction kinetics than TA-804 and TA-806. They all have highly efficient extraction and separation performance for Pd from chloride media at acidities of [HCl] ≤ 3 mol/L. When the HCl concentration is ≥4 mol/L, Fe and Pt begin to be extracted. At any acidities, Rh, Zn, Al, La, Zr, Co, Cu, Ni, Ce and Mg are not extracted. The studied octanethioic acid alkyl amides extract Pd from chloride media via complexation mechanism. Two extractant molecules quantitatively extract one Pd. The loaded Pd are easily and efficiently stripped by thiourea. They can efficiently extract and highly separate Pd from leaching liquor of spent auto-catalysts at acidity of 3 mol/L HCl.
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JOURNAL OF ETHNOPHARMACOLOGY
·
2023
·
IF 5.4
Chuiyang Zheng,Huan Nie,Maoxing Pan,Wen Fan,Dajin Pi,Zheng Liang,Dongdong Liu,Fengzhen Wang,Qinhe Yang,Yupei Zhang
Ethnopharmacological relevance Chaihu Shugan powder (CSP) plays an important role in the prevention and treatment of nonalcoholic fatty liver disease (NAFLD) through a variety of biological mechanisms. However, whether the mechanism involves microRNA (miRNA) regulation remains unknown. Aim of the study To investigate the effects of CSP on the miRNA expression profile of rats with NAFLD induced by high-fat diet (HFD), and to explore the mechanism of CSP in the treatment of NAFLD. Methods NAFLD rat models were established by an 8-week HFD. The therapeutic effects of CSP on NAFLD were evaluated by physiological, biochemical and pathological analysis and hepatic surface microcirculation perfusion test. MicroRNA sequencing was used to study the effect of CSP on the miRNA expression profile of NAFLD rats, and the target genes of differentially expressed (DE) miRNAs were predicted for further function enrichment analysis. Next, targets of CSP and NAFLD were collected by a network pharmacological approach, and Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analysis were performed for the common target genes of CSP, NAFLD and DE miRNAs, and the expression levels of key genes and proteins were verified by quantitative Real-time PCR and Western blot . Finally, a network among formula-herb-compound-miRNA-target-biological processes-disease was established to explained the complex regulation mechanism of CSP on NAFLD. Results The results showed that CSP significantly improved liver lipid accumulation, serum lipid and transaminase levels and liver surface microcirculation disturbance in HFD-induced NAFLD rats. The intervention of CSP reversed the high expression of 15 miRNAs in liver tissues induced by HFD, including miR-34a-5p, miR-146a-5p, miR-20b-5p and miR-142-3p. The results of pathway and functional enrichment analysis showed that, CSP might play an anti-NAFLD role via regulating DE miRNAs related to fatty acid metabolic process. Combined with the network pharmacological analysis, it was found that the DE miRNAs might affected the fatty acid biosynthesis pathway in the treatment of NAFLD by CSP. Molecular biology experiments have conformed the decreased the gene and protein levels of acetyl-CoA carboxylase alpha (ACACA), fatty acid synthase (FASN) and other fatty acid biosynthesis related enzymes on NAFLD rats after intervention of CSP. Conclusions CSP can significantly reduce hepatic lipid accumulation of NAFLD rat model induced by HFD, and its mechanism may be through the action of 15 miRNAs such as miR-34a-5p, miR-146a-5p, miR-20b-5p and miR-142-3p. Reduce the gene and protein expression levels of ACACA, FASN and other fatty acid biosynthesis related enzymes, thus reducing fatty acid biosynthesis. Based on an epigenetic perspective, this study explains the key anti-NAFLD mechanism of CSP via combination of microRNA sequencing and network pharmacological analysis, providing a new reference for the modernization of traditional Chinese medicine .
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Biomaterials Science
·
2023
·
IF 6.6
Siyi Li,Qinglin Wang,Yingying Ren,Pengfei Zhong,Pengtao Bao,Shanyue Guan,Xiaochen Qiu,Xiaozhong Qu
The development of cancer treatment is of great importance especially in the early stage. In this work, we synthesized pH-sensitive amphiphilic ruthenium complex containing two alkyl chains and two PEG chains which was utilized as oxygen sensitive fluorescent probe for co-assembly with lipids to harvest a liposomal delivery system (RuPC) for the encapsulation of a photothermal agent indocyanine green (ICG). The resultant ICG encapsulated liposome (RuPC@ICG) enabled to deliver ICG into cells via membrane fusion pathway by which the ruthenium complex was localized in the cell membrane for better detecting the extracellular oxygen concentration. Such characteristic endowed the ratiometric imaging feature to distinguish tumour location from normal tissues at just 3 days after cancer cells were implanted by monitoring the hypoxia condition and tracing the metabolism. Moreover, the pH sensitivity of the liposomes favoured the cell uptake, and improved the anti-tumour efficiency of the formulation in vivo under NIR irradiation. Should liposomal systems have less safety issue, our work not only provided a facile way for the construction of theragnostics by combining phototherapy with photoluminescent imaging, but hopefully paving the way for the clinical translation from bench to bedside.
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JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7475-7483
·
IF 2.1
Sun Baorui,Zhang Minghui,Li Junjie,Li Zhe,Wen Mingli,Liu Zhi-Quan
Ag sintering technology for die-attach application in power semiconductors has garnered significant attention in recent years due to its excellent high-temperature service reliability. In this study, a highly reliable bonding joint was achieved using a specific Ag paste, resulting in shear strength of 37.63 MPa after pressureless bonding at 250°C for 10 min. However, a significant reduction in bonding strength was observed when using another set of Ag paste with better sintering performance. To investigate this anomalous phenomenon, we have performed a series of characterizations and proposed a corresponding bonding formation mechanism. The conclusions and inferences drawn from this study offer valuable theoretical support for the further application of Ag sintering, thereby promoting the advancement of this technology. Graphical Abstract
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危险品化学品经营许可证（带存储）