CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhaorui Zhang,Jiahao Liu,Haiying Du,Xufei Zhao,Haoming Sun,Minghui Yang,Jinkui Chu
A surface functional group modulation method was used to regulate the NO 2 sensing performance of the Ti 3 C 2 T x sensor. The monolayer Ti 3 C 2 T x MXene was synthesized from Ti 3 AlC 2 (MAX phase) by hydrofluoric acid (HF) etching. Ar/O 2 hybrid plasma treatment was used to regulate the ratio of hydroxyl and fluorine functional groups (OH/ F) in the Ti 3 C 2 T x surface structure. Room-temperature (RH) NO 2 sensor based on modified Ti 3 C 2 T x was fabricated by the dip coating method. The modified Ti 3 C 2 T x sensor has a higher gas response (45.31 %) to 50 ppm NO 2 compared with the untreated Ti 3 C 2 T x sensor which shows more excellent sensitivity and linearity with the NO 2 concentration of 5–50 ppm. It is due to that the presence of the hydroxyl potential on the Ti 3 C 2 T x surface well amplifies the electronic surface activity of Ti 3 C 2 T x . Concurrently, the modified electronic structure augments the adsorption propensity of Ti 3 C 2 T x for O 2 (2.26 |eV|) and NO 2 (3.24 |eV|), thereby improving the NO 2 sensing capability of the Ti 3 C 2 T x sensor. These results demonstrate that Ti 3 C 2 T x with a high ratio of OH/ F functional groups has great potential in developing high-performance room temperature NO 2 sensors.
研究领域:
材料科学
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环境科学
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化学
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Separations
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2026
·Vol. 13
·期 2
·63
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IF 3.5
Jingjing Quan,Yuting Zheng,Lan Yao,Lianqing Li,Xingming Ning
The highly efficient performance of photoelectrochemical (PEC) water splitting is largely governed by the construction of active interfaces, especially for the star semiconductor/electrocatalyst system. However, traditional strategies struggle to optimize this critical process. To overcome this challenge, we report a fluorine (F) engineering strategy that enables the synchronous modulation of charge transfer and surface catalytic reaction dynamics in a BiVO4/FeCoOOH-integrated photoanode. Various characterization methods confirm that F engineering can activate the BiVO4/FeCoOOH/electrolyte interfaces. Benefiting from these positive effects, the optimized BiVO4/FeCoOOH-F photoanode achieves a relatively high photocurrent density of 5.46 mA/cm2at 1.23 V vs. RHE, along with outstanding photostability and a small Tafel slope of 96.5 mV dec−1. This study provides new insights into F-based interface manipulation, offering a promising route to developing high-performance semiconductor/electrocatalyst systems for efficient and stable PEC water splitting applications.
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PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
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2024
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IF 2.8
Zhe Han,Shengyi Wang,Ao Gao,Meiqi Dong,Yufeng Xiao,Hongyu Pan,Lining Zheng,Hao Zhang
Tomato wilt disease, caused by Fusarium oxysporum f. sp. lycopersici , is a major soil-borne disease affecting tomato cultivation. In this study, two strains exhibiting significant control effects on F. oxysporum f. sp. lycopersici and tomato growth-promoting effects were isolated from the rhizosphere. Through physiological and biochemical identification, as well as 16S rRNA identification, these strains were identified as Enterobacter quasihormaechei L33 and Klebsiella oxytoca TL2, respectively. And the two strains of bacteria were confirmed to have no antagonistic effect through antagonistic compatibility tests. Notably, when these strains were mixed in a ratio of 5:1, they demonstrated remarkable antifungal activity. The mixed strains induced mycelium swelling, necrosis, and rupture in F. oxysporum f. sp. lycopersici , resulting in a 56.65 % inhibition of mycelial fresh weight. Additionally, they inhibited spore production with an inhibition rate of 787.5 %, and the inhibition rate of the lipopeptide produced reached 93.80 % at 50 mg/mL. Furthermore, in potting experiments, the mixed strains reduced the disease incidence by 36.25 % after 8 weeks. Additionally, compared to the control group, the mixed bacterial strain group enhanced fresh weight, plant height, chlorophyll a and b levels, and root activities by 96.31 %, 18.51 %, 184.48 %, 53.03 %, and 44.31 %, respectively. In addition, mixed strains can inhibit the cell wall degrading enzymes produced by Fusarium oxysporum f sp., induce plant defense enzymes, including increased activity of peroxidase, catalase, and superoxide dismutase, and reduce the decrease in malondialdehyde levels. The mixed strains could colonize tomato plant roots. Overall, these findings suggest a potential biocontrol agent deriving from the mixed strains against tomato wilt disease.
研究领域:
植物病理学
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微生物学
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高影响因子
JCI Insight
·
2022
·
IF 9.484
Jing Yang,Hongxia Li,Chi Zhang,Yafeng Zhou
There is a high prevalence of ventricular arrhythmias related to sudden cardiac death in patients with chronic kidney disease (CKD). To explored the possible mechanism of CKD-related ventricular arrhythmias, a CKD rat model was created, and indoxyl sulfate (IS) was further used in vivo and in vitro. This project used the following methods: patch clamp, electrocardiogram, and some molecular biology experimental techniques. IS was found to be significantly elevated in the serum of CKD rats. Interestingly, the expression levels of the fast transient outward potassium current–related (I to,f -related) proteins (Kv4.2, Kv4.3, and KChIP2) in the heart of CKD rats and rats treated with IS decreased. IS dose-dependently reduced I to,f density, accompanied by the decreases in Kv4.2, Kv4.3, and KChIP2 proteins in vitro. IS also prolonged the action potential duration and QT interval, and paroxysmal ventricular tachycardia could be induced by IS. In-depth studies have shown that ROS/p38MAPK, ROS–p44/42 MAPK, and NF-κB signaling pathways play key roles in the reduction of I to,f density and I to,f -related proteins caused by IS. These data suggest that IS reduces I to,f -related proteins and I to,f density by activating ROS/MAPK and NF-κB signaling pathways, and the action potential duration and QT interval are subsequently prolonged, which contributes to increasing the susceptibility to arrhythmia in CKD.
研究领域:
心脏病学
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肾病学
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分子生物学
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电生理学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Wei Huang,Lin Zhang,Xuejun Lai,Hongqiang Li,Xingrong Zeng
With the increasing occurrences of industrial oily wastewater emissions and crude oil spills, the deteriorated global environment and ecosystems have attracted a great deal of attention worldwide. Herein we report a highly hydrophobic balsa wood sponge wrapped with fluoroalkyl silane modified reduced graphene oxide (F-rGO@WS) for efficient clean-up of all kinds of oils including viscous crude oil from water. The F-rGO@WS possessed excellent water repellency with a water contact angle of 145°. Owing to high hydrophobicity and longitudinal channels, the F-rGO@WS was successfully applied for separating oil-water mixtures, and the separation efficiency reached 99.0%. Furthermore, the F-rGO@WS also possessed quick electrothermal capability and could be utilized as a filter to efficiently separate viscous crude oil from water by means of the generated Joule heat under a low voltage, and the separation rate was about 10 times higher than that without voltage. Our findings stand out a new tool to fabricate functional natural materials and exhibit great potential in practical applications such as water pollution control and clean-up of viscous crude oil.
研究领域:
环境科学
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材料科学
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溢油修复
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纳米材料
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水污染控制
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DOI
高影响因子
ANALYST
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2023
·
IF 4.2
Lihua Xu,Qiong Wang,Yan Liu,Songsen Fu,Yufen Zhao,Shaohua Huang,Biling Huang
Chiral amino-group compounds are of significance for human health, such as biogenic amino acids (AAs), dipeptides, and even various drugs. Enantiospecific discrimination of these chiral compounds is vital in diagnosing diseases, identifying pathological biomarkers and enhancing pharmaceutical chemistry research. Here, we report a simple and rapid 19F NMR-based strategy to differentiate chiral AAs, dipeptides, and amines, that were derivatized with (R)-2-(2-fluorophenyl)-2-hydroxyacetic acid ((R)-2FHA). As a result, 19 proteinogenic AAs (37 isomers) as well as Gly could be concurrently resolved. Moreover, various mirror-image dipeptides, such as Ser–His, Leu–Leu, and Ala–Ala, were commendably recognized. Intriguingly, we found that the absolute configuration of AAs in the N-terminus of dipeptides decided the relative 19F chemical shifts between two enantiomers. Besides, the ability of this method for enantiodiscrimination was further demonstrated by non-AA amines, including aromatic and aliphatic amines, and even amines having chiral centers several carbons away from the amino-group. The structurally similar antibiotics, amoxicillin and ampicillin, were well discriminated. Furthermore, this method accurately determines the de or dr values of non-racemic mixtures. Therefore, our strategy provides an effective approach for 19F NMR-based enantiodiscrimination and diastereomeric purity determination of amino-group compounds.
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高影响因子
LIFE SCIENCES
·
2023
·
IF 6.1
Qingbo Yang,Chuangqi Mo,Pengfei Cui,Shuwen Zhou,Lin Qiu,Pengju Jiang,Yang Xuan,Hai Huang,Cheng Wang,Jianhao Wang
Aims Bacterial infection is a significant factor contributing to the deterioration of wounds, and the misuse of antibiotics has exacerbated bacterial resistance. Therefore, there is an urgent need to develop a novel antibacterial strategy to replace conventional therapies. This study aims to construct a self-activated cascade reaction nanozyme, f-FeNC@GOx, which triggers a cascade reaction in the presence of glucose. This cascade reaction generates highly toxic hydroxyl radicals ( OH), thereby achieving the goal of eliminating bacteria and promoting wound healing. Material and methods In vitro antibacterial experiments, bacterial spread plate method, Live/Dead staining, and crystal violet staining were conducted to analyze the antibacterial ability and mechanism of f-FeNC@GOx. In vivo experiments, a mouse wound model was established, and H&E and Masson staining of wound tissues were performed to assess the antibacterial activity of the f-FeNC@GOx in vivo . Key findings The in vivo and in vitro experiments confirmed that f-FeNC@GOx exhibited significant antibacterial effect against both Staphylococcus aureus and Escherichia coli in the presence of glucose. Furthermore, it showed optimal wound healing performance in the wound models. Significance These findings suggested that f-FeNC@GOx was a novel and effective antibacterial nanomaterial, which provided a promising antibacterial strategy using nanoenzyme based cascade reaction.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Meixue Zhao,Jianping Guo,Qingping Xin,Yanli Zhang,Xu Li,Xiaoli Ding,Lei Zhang,Lizhi Zhao,Hui Ye,Hong Li,Guangyu Xuan,Yuzhong Zhang
Membrane separation is a novel technology that has been widely studied for efficient CO 2 capture. This study aims to synthesize novel porous amino-functionalized nanosheets using PEI (polyethyleneimine) (PEI-F-Ce) and PEI-F-Ce/polyethylene oxide (PEO) mixed matrix membranes (MMMs). PEI-F-Ce nanosheets were prepared via the electrostatic self-assembly method, allowing for the adjustment of both lateral and pore sizes of the nanosheets by varying the PEI concentration. The MMMs loaded with 2 % PEI-F-Ce-2.5 nanosheets exhibit excellent CO 2 permeability (641 Barrer) and outstanding CO 2 /N 2 selectivity (70.1). These values surpassed those of pure PEO membranes by 62 % and 53 %, respectively, exceeding the 2019 upper bound. PEI-F-Ce-2.5 nanosheets with a stable pore channel 3.406 nm improved CO 2 transport and showed a large CO 2 adsorption capacity of 1.32 mmol g −1 , leading to enhanced the CO 2 /N 2 reaction selectivity. Moreover, the reversible reaction of CO 2 with –NH 2 enhanced the CO 2 /N 2 selectivity by 5.1 times at −20 °C, thereby highlighting its potential for cryogenic gas separation applications.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yuxiang Li,Xi Chen,Lei Zhang,Ruishan Han,Iftikhar Hussain,Xiaoxia Ma,Kaili Zhang
Metastable intermolecular composites (MICs) composed by solid fuel and oxidizer can undergo violent redox reaction with release of huge amount of energy. Integration of MIC with microelectromechanical-system (MEMS) is of particular interest to meet the demand of miniaturization in modern pyrotechnic devices. Meanwhile, fluorine-containing oxidizers are favored in MIC owing to their potential to fluorinate the oxide passivation layer in common elemental fuels. Herein, Co(OH)F was employed for the first time as a novel fluorine-containing oxidizer in Al-based MIC. Vertically aligned Co(OH)F@Al nanobelt arrays (NAs) with tunable morphology were successfully fabricated on a variety of substrates (Si, glass, Ni, Cu, Ti) via a facile hydrothermal synthesis followed by electron beam evaporation. The whole fabrication process is highly compatible with modern MEMS technology. The thermal behavior of pure Co(OH)F and Co(OH)F@Al composites was comprehensively investigated by TG-DSC and a series of ex-situ and in-situ characterization. It was found that, Co(OH)F@Al composites achieved main exothermal reaction before melting of Al regardless of morphology and equivalence ratio. This feature is attributed to the etching of Al 2 O 3 shell by HF released from Co(OH)F which is termed as pre-ignition reaction. To elucidate the effect of micro-structure on the actual specific heat release, we proposed a phenomenological model which can be a reference for future micro-structure design of MIC.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Pengyu Gao,Guotai Li,Zhiguo Wang,Hui Zhang,Yansheng Shan,Xin Yuan,Qiang Shi,Xue Dou,Qihui Zhou,Quanchen Xu
Periodontitis is a chronic inflammatory disease induced by a plaque biofilm, which can lead to the destruction of the periodontal support tissue and even teeth loss. The common strategies of periodontitis treatment are to eliminate bacterial/biofilm-related inflammation and subsequently inhibit alveolar bone resorption, for which antibiotic therapy is the most traditional one. However, impenetrable polymeric substances on bacterial biofilms make it difficult for traditional antimicrobial agents to take effect. In this study, a novel nanoparticle protease-loaded CuS NPs was developed, combining the advances of photodynamic and photothermal therapy from CuS and enzymatic degradation of the biofilm by a protease. The photothermal activity and the reactive oxygen generation capacity of the designed nanoparticles were verified by the experimental results, constituting the basis of antibacterial function. Next, the high antimicrobial activity of CuS@A NPs onFusobacterium nucleatumand its biofilm was demonstrated. The proper hemo/cytocompatibility of CuS-based NPs was demonstrated by in vitro assays. Last, effective treatment against periodontitis was achieved in a rat periodontitis model through the significant efficacy of inhibiting bone resorption and alleviating inflammation. Thus, the developed CuS@A NPs prove a promising material for the management of periodontitis.
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ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Yuwei Shen,Dingchang Shi,Liangbin Liu,Fan Liao,Wenxiang Zhu,Mingwang Shao
The electrocatalytic activity is closely associated with the electronic structure of catalysts. Electron-deficient palladium (Pd) has been proved to show better oxygen reduction reaction performance than the electrophilic one due to the downshift of the d-band center. In this work, Pd nanoparticles are uniformly dispersed in F, N-doping graphene with the assistant of silicon nanowires and hydrofluoric acid (Pd/F, N-doping G). A strong interaction between the metal and doped-graphene leads to the electron-deficiency of the modified Pd, which is beneficial for obtaining proper adsorption energy of oxygen species. The as-prepared Pd/F, N-doping G-3 catalyst shows a four-electron oxygen reduction pathway with large half-wave potential of 0.87 V and high onset potential of 0.99 V in 0.1 M KOH. In addition, the Pd/F, N-doping G-3 based zinc-air battery exhibits an open potential of 1.40 V and a high power density of 229 mW·cm–2.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Yongming Wu,Mi Deng,Yuanxiang Jin,Xin Liu,Zhaohuan Mai,Hailin You,Xiyan Mu,Xiaoli He,Reem Alharthi,Daniel Joseph Kostyniuk,Chunyan Yang,Wenqing Tu
6:2 chlorinated polyfluorinated ether sulfonate (F-53B), a Chinese PFOS alternative, has recently been identified in river water, sewage sludge , wildlife and humans, causing great concerns about its potential toxic effects. Here, we report the first investigation of the toxicokinetics and oxidative stress of F-53B in adult zebrafish. Adult male and female zebrafish were exposed to 10 and 100 μg/L of F-53B for 7 days followed by a 5-d depuration period to examine bioaccumulation, distribution, and depuration of F-53B in fish. The results showed that F-53B was readily accumulated in fish tissues with log BCF values of 2.36–3.65, but was eliminated slowly ( t 1/2 = 152.4–358.5 h). F-53B accumulation was greater in males than in females and the concentration in tissues decreased in the following order: gonad ≈ liver ≫ gill ≫ brain in females and liver ≈ gill ≫ gonad ≫ brain in males, showing sex- and tissue- specific accumulation of F-53B in fish. After chronic exposure to F-53B for 28 days, a significant dose-dependent increase in histopathological changes in the liver were mainly manifested by vacuolation. Furthermore, F-53B also significantly reduced the enzyme activity (or content) of most of the measured oxidative stress-related markers (e.g., SOD, CAT and MDA) except for an increase in GSH-Px activity, indicating that oxidative stress was induced in zebrafish after treatment with F-53B. The results of this study provide important information on the toxicokinetics and toxic effects of F-53B, which will contribute to the ecological risk assessments of F-53B released into surface waters.
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高影响因子
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