APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Chen-Xiang Wang,Wei Wang,Ning Wang,Xue-Fen Zhang
Superhydrophobic coatings hold significant promise for protecting aluminum alloys from corrosion. Yet, their widespread use is impeded by complex preparation processes, limited durability, and poor protection. In this study, natural palygorskite was activated through thermal treatment and subsequently modified with dodecyltrimethoxysilane. The resulting superhydrophobic particles (SH-P-H) demonstrated responsiveness to pH changes and could accommodate more benzotriazole (BTA). A new superhydrophobic composite coating (EP/BTA@SH-P-H) was then constructed on aluminum alloys by one-step spraying of epoxy resin and BTA-containing SH-P-H. Electrochemical tests revealed that intact and defective EP/BTA@SH-P-H coatings maintained improved anticorrosion performance in 3.5 wt% NaCl solution than the BTA-free ones. Notably, the EP/BTA@SH-P-H coating could withstand 700 cm of sandpaper abrasion, 68 times of tape peeling, at least 60 min of high-speed water impact, 92 h of immersion in corrosive solutions (pH = 1, 7, and 14) and organic solutions (EtOH and n-hexane), 200 h of UV irradiation, and at least 30 days of real-world exposure. When exposed to sunlight, the EP/BTA@SH-P-H coating could recover its superhydrophobicity even after plasma degradation for 13 cycles. Furthermore, the coating exhibited outstanding self-cleaning and antifouling characteristics, providing innovative ideas for developing durable and multifunctional superhydrophobic coatings for active protection.
研究领域:
材料科学
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表面工程
·
腐蚀防护
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功能涂层
·
纳米复合材料
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Chen-Xiang Wang,Wei Wang,Xue-Fen Zhang
Conventional superhydrophobic composite coatings fail to meet the service needs of aluminum alloys in harsh environments due to their inadequate bonding of hydrophobic particles in the topcoat and vulnerability to organic contamination. To address these challenges, a palygorskite-based superhydrophobic composite coating has been developed, inspired by nacre. The coating is composed of an epoxy resin primer and a polydimethylsiloxane (PDMS) strengthened layer with superhydrophobic palygorskite in between, forming a sandwich structure. The effect of PDMS concentration on the coating's wettability, surface morphology, and mechanical durability was thoroughly investigated. Results show that at 0.3 g/mL PDMS concentration, the final coating (ESPP) exhibits optimal abrasion resistance, withstanding an abrasion distance of 8000 cm on 600-grit sandpaper under a 100 g load. When immersed in 3.5 wt% NaCl solution for 44 days, the low-frequency impedance modulus (|Z| lf ) of the ESPP coating maintains as high as 8.34 × 10 6 Ω∙cm 2 . Even when contaminated with organic contaminants, the coating's corrosion current density is 4 orders of magnitude lower, while its |Z| lf is four orders of magnitude higher compared to that of the coating lacking the PDMS layer. This study is expected to offer new insights into the design of mechanically robust and oil-resistant superhydrophobic anti-corrosion coatings.
研究领域:
材料科学
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表面工程
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防腐蚀技术
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纳米技术
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复合材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2022
·Vol. 103
·期 4
·2014-2022
·
IF 4.125
Wenping Peng,Nan Wang,Shunmin Wang,Junzhen Wang,Zixiu Bian
BACKGROUND Tartary buckwheat is rich in flavonoids. The application of physical processing technology and exogenous materials treatment can effectively promote grain germination and the accumulation of bioactive secondary metabolites. The content of four flavonoids, the activities of key enzymes (phenylalanine ammonia-lyase (PAL), chalcone isomerase (CHI), flavonol synthase (FLS)) and the expression of key enzyme genes ( FtPAL , FtCHI , FtFLS1 , FtFLS2 ) in Tartary buckwheat sprouts treated with microwave and l -phenylalanine ( l -Phe) were investigated, and the relationship between them was analyzed to explore the mechanism of promoting flavonoid accumulation, and to provide a theoretical basis for the development of functional Tartary buckwheat sprout food. RESULTS Germination can promote the synthesis of flavonoids. The contents of chlorogenic acid and rutin in 7-day sprouts increased by 13 420.63% and 225.12% compared with seeds, respectively. Under the best treatment condition T 3 (microwave 250 W, 90 s, 2.9 mmol L −1 L-Phe), the specific activities of PAL, CHI and FLS in 5-day-old sprouts increased by 47.84%, 53.04% and 28.02% compared with control check (CK), respectively; and the expression of FtPAL , FtCHI and FtFlS1 increased by 39.84%, 24.78% and 33.72% compared with CK, respectively. Correlation analysis showed that the content of flavonoids in Tartary buckwheat sprouts was significantly positively correlated with the specific activities of key enzymes ( P < 0.01) and dynamically correlated with genes related to the synthesis of three enzymes. CONCLUSION It suggested that microwave and l -Phe treatment may promote the synthesis of flavonoids by promoting the expression of key enzymes genes in phenylpropane metabolism and controlling the activity of key enzymes in phenylpropane metabolism. © 2022 Society of Chemical Industry.
研究领域:
食品科学
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植物生理学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CLAY SCIENCE
·
2025
·
IF 5.8
Cuicui Liang,Fei Zha,Xiaohua Tang,Xiaojun Guo,Haifeng Tian,Yue Chang
The misuse of antibiotics leads to the emergence of a variety of drug-resistant bacteria, which poses a serious threat to human life. Novel antimicrobial strategies are urgently needed. Herein, peroxidase-like enzyme material of Cu 2 O/NPC/Pal was prepared from Cu 2 O/nanoporous carbon (Cu 2 O/NPC) derived from Cu-MOF in the presence of palygorskite (Pal) by the pyrolysis-etching-pyrolysis strategy. Cu 2 O/NPC/Pal could catalyze the production of ·O 2 − from H 2 O 2 to cause the oxidative stress and cell membrane damage to bacteria. The antibacterial rates against Staphylococcus aureus and Pseudomonas aeruginosa reached 98.99 % and 92.70 %, respectively. In addition, Cu 2 O/NPC/Pal can promote the oxidation of glutathione and the consumption of intracellular effectively. Introduction of Pal into Cu 2 O/NPC significantly enhances the binding affinity and forms a highly concentrated substrate microenvironment. The study provided the pyrolysis strategy for the synthesis of carbon-based metal oxide nanomaterials in combination with mineral-based materials for the enhancement of peroxide-like activity in antimicrobial application.
研究领域:
微生物学
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材料科学
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医学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Chengda Li,Yueli Wen,Bin Wang,Maohong Fan,Wenlong Liu,Zheng Cui,Wei Huang
Activation and desorption of the hydrogen atom in the toluene methyl is a restrictive step for side-chain alkylation of toluene with methanol (SATM). In this work, two dehydrogenation strategies were used to improve the catalytic performance, dehydrogenation component Cu was introduced in PAl-NaX catalyst as well as the acid-base property was adjusted by changing NaOH loading amount. The relationship among the percentage of acid-base sites, low valence Cu species and the catalytic performances was investigated combined with the multiple characterizations, like X-ray photoelectron spectroscopy (XPS), Temperature-programmed desorption (TPD) of NH 3 and CO 2 , etc. together with ternary regression analysis. It is found that the dehydrogenation component Cu, especially low valence Cu species, promotes the selectivity of side-chain alkylation products to a certain degree, but base sites play an even more critical role in enhancing it.
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2017
·
IF 2.446
Jixiang Xu,Jianyang Gao,Yong Liu,Qingyun Li,Lei Wang
A facile method for fabrication of In 2 O 3 /Co 3 O 4 @palygorskite composites from a Co/In-based metal-organic framework (MOF) was reported. First, Co/In-MOFs hybridized with palygorskite (PAL) was prepared via a one-pot solvothermal method. Second, In 2 O 3 /Co 3 O 4 @PAL composites were obtained by pyrolysis of In 2 O 3 /Co 3 O 4 @PAL in air. It was found that the In 2 O 3 /Co 3 O 4 @PAL composite exhibited higher photocatalytic activities than In 2 O 3 /Co 3 O 4 to the degradation of MB and TC under visible-light irradiation. About 99% of MB (within 40 min) and 80% of TC (within 120 min) were degraded using In 2 O 3 /Co 3 O 4 @5.0%PAL as catalyst. It was supposed that the efficient adsorption of MB and TC, and electrostatic interactions between electron–hole and PAL were responsible for such improvement. The photocatalytic degradation mechanisms of MB and TC on the In 2 O 3 /Co 3 O 4 @PAL were investigated. This work shows that hybridization MOFs with PAL could enhance the photocatalytic properties of MOFs-derived metal oxides for water treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Dafan Chen,Aiqin Wang,Yiming Li,Yajie Hou,Zhining Wang
An effective and conventional remediation technique in marine oil spills is to apply chemical dispersants to emulsify oil slicks into small oil droplets. Still, the potential hazards of chemical dispersants onto the marine ecosystem have motivated the research for environmentally friendly alternative while keeping exceptional dispersion ability. Here, we showed that the mixture of palygorskite (PAL) and rhamnolipid (Rha) formed a biocompatible alternative to synthetic surfactants used for oil spill dispersion. The oil droplets dispersed by R-PAL presented a small average size and long-term stability, which illustrated the synergistic interactions between Rha and PAL acting as an efficient dispersant in artificial sea water (ASW). Due to the strong flocculation caused by high salinity , PAL alone was not effective emulsifiers in ASW. A small amount of Rha could played a major role in modifying the surface characteristics of PAL and decreasing oil-water interfacial tension. Therefore, PAL particles irreversibly adsorbed onto the oil-ASW interface and formed a rigid interfacial film around oil droplets in the presence of Rha, which offered an efficient barrier to droplet coalescence. The synergistic interactions between PAL and Rha could enable the dispersion of tetradecane in ASW. Such a functionality was further tested in dispersing crude oil in ASW. The study presents a new strategy of using a mixture of PAL and Rha for oil dispersion, thus providing an ecofriendly alternative to conventional dispersants.
研究领域:
环境科学
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材料科学
·
海洋学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yabin Li,Jingyao Qi,Jimin Shen,Pengwei Yan,Jing Kang,Binyuan Wang,Shuyu Wang,Jinxiang Zuo,Zhonglin Chen
Peroxymonosulfate (PMS)-based advanced oxidation processes are perceived as a novel strategy for water purification. However, designing an efficient catalyst with a low metal leaching rate remains challenging. Here, under palygorskite (PAL) mediation, 16%-CoCu 0.4 Fe 1.6 O 4 @PAL (16%-CCFO@PAL) was constructed, exhibiting ample oxygen vacancies (V O ) and low metal leakage. The V O was confirmed by systematic characterizations and theoretical calculations. The catalyst showed the efficient catalytic capacity for PMS by dual-path (i.e., metal sites and V O ) activation. Large amounts of SO 4 •- , •OH, and 1 O 2 were produced, greatly destroying bisphenol S (BPS). BPS removal was greater than 99% within 25 min in the 16%-CCFO@PAL/PMS system. At the metal sites, PMS was activated under the synergistic effects of Co(II)/Co(III), Fe(II)/Fe(III), and Cu(I)/Cu(II) pairs and electron transfer. In addition to metal sites, the V O was also an activation center for PMS, which mainly captured the O I atom in [H-O I -O II -SO 3 ] - , donating an electron to O I and promoting SO 4 •- generation. The interfacial reaction mechanism was explored by in situ tests, and a dual-path activation mechanism was proposed. This work provides a new perspective for V O -assisted PMS activation for water treatment.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 9
·2618
·
IF 4.927
Jiao Zhou,Xinyue Lin,Shuangshuang Liu,Zhanbin Wang,Dongchao Liu,Yonghong Huo,Dehai Li
Inonotus hispidushas various health-promoting activities, such as anticancer effects and immune-stimulating activity. The commercialization of valuable plant triterpenoids faces major challenges, including low abundance in natural hosts and costly downstream purification procedures. In this work, orthogonal design was used to compound methyl jasmonate (MeJA), salicylic acid (SA), oleic acid, and Cu2+, and the effects of combinations on the total triterpenes biosynthesized were studied. The optimal combination was screened out and its effect on the activity of PAL, CAT, and SOD was studied. The optimal concentration of oleic acid was 2% when MeJA was 100 mol/L, and the total triterpenoid content and mycelia production were 3.918 g and 85.17 mg/g, respectively. MeJA treatment induced oxidative stress, and at the same time increased the activity of related defense enzymes. Oleic acid is thought to regulate cell permeability by recombining cell membranes. It promotes the material exchange process between cells and the environment without affecting cell growth. When oleic acid was used in combination with MeJA, a synergistic effect on triterpene production was observed. In conclusion, our findings provide a strategy for triterpenoid enrichment ofI. hispidus.Keywords:Inonotus hispidus;combination of elicitors;defense enzyme;triterpenoid
研究领域:
药理学
·
真菌学
·
生物化学
·
天然产物化学
✓ 已验证
DOI
PubMed
高影响因子
Acta Biomaterialia
·
2025
·
IF 9.6
Rong Zhang,Yongchang Tian,Jiaming Cui,Ian W Hamley,Chunsheng Xiao,Li Chen
The management of bacterial wounds presents a significant challenge in the field of medicine and poses a grave threat to public health. Traditional gauze materials exhibit limited efficacy in treating bacterial infection wounds, while antibiotics demonstrate cytotoxicity and resistance. Therefore, in this study, the peptide biomimetic polymer (PAL-BA) was designed and served as the antibacterial framework for constructing an antibiotic drug-free antibacterial hydrogel dressing through a Schiff base reaction with oxidized hyaluronic acid (OHA). The design of PAL-BA aims to emulate the antimicrobial properties of host defense peptides, serving as a viable alternative to antibiotics drugs. It exhibits comparable antimicrobial activity to polylysine while maintaining biosafety. In vitro experiments demonstrated that PAL-BA exhibited exceptional antibacterial activity against both Staphylococcus aureus and Escherichia coli , while the PAL-BA based antibacterial hydrogel (PBP gel) effectively eliminated 100% of pathogenic bacteria within a duration of 140 min. In vivo studies further demonstrated that PBP hydrogels effectively accelerate the healing of bacterial infected wounds by blocking the infection process. Therefore, the antimicrobial peptide biomimetic polymer hydrogel exhibits significant promise for the management of bacterial wound infections. Statement of significance The management of bacterial infection wounds remains a challenging issue in clinical practice. In this study, we propose the utilization of a peptide biomimetic polymer (PAL-BA) as an antibacterial framework and its combination with oxidized hyaluronic acid (OHA) through Schiff base reactions to develop an antibiotic drug-free antibacterial hydrogel dressing for the treatment of bacterial infections wounds. The design of PAL-BA aims to mimic the antimicrobial properties of host defense peptides, providing a promising alternative to antibiotic drugs. It demonstrates comparable antimicrobial activity to poly-lysine while maintaining biosafety. Importantly, this antimicrobial peptide biomimetic polymer hydrogel effectively inhibits the infection process in mouse wounds and accelerates the healing of bacterially infected wounds, offering a therapeutic approach for treating infected wounds.
研究领域:
生物材料学
·
医学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Yabin Li,Jingyao Qi,Jimin Shen,Binyuan Wang,Jing Kang,Pengwei Yan,Yizhen Cheng,Li Li,Linlu Shen,Zhonglin Chen
Extensive studies revealed that Cl - could inhibit the removal of targeted pollutants under low Cl - conditions in the peroxymonosulfate (PMS) system. However, the enhanced effect of Cl - has always been overlooked under high Cl - conditions. Here, we find that high concentration of Cl - played a critical role in bisphenol S (BPS) degradation by activating PMS using 16%-CoFe 2 O 4 @PAL (16% [email protected] ). The removal of BPS was sharply enhanced after introducing 0.5 and 1.0 M Cl - , and the corresponding k obs increased to 0.922 min −1 and 1.103 min −1 , which was 6-fold and 7-fold higher than the control (0.144 min −1 ), respectively. HOCl was demonstrated as the dominant species for removing BPS in 16% [email protected] /PMS system under high Cl - circumstances. The typical chlorinated BPS intermediates were identified, which showed higher eco-toxicity than BPS. The chlorinated byproducts along with their toxicity could be effectively eliminated after 30 min. The possible formation mechanism of chlorinated products was further revealed by theoretical calculations. Toxicity assessment experiments showed that BPS significantly affected hormone levels of zebrafish and showed toxicity on the testis and liver of zebrafish, which could be reduced using 16% [email protected] /PMS system. This study attracts attention to the overlooked HOCl in PMS-based processes under high salinity conditions.
研究领域:
环境科学
·
化学工程
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BMC PLANT BIOLOGY
·
2024
·
IF 4.3
Minmin Chen,Xiaoqun Wang,Xiawen Zhou,Baiyu Huang,Yujie Zhao,Haiying Liu,Qiuling He
Tetrastigma hemsleyanum , a traditional Chinese medicinal plant with anti-inflammatory, anti-cancer, and anti-tumor properties, faces increasing abiotic stress due to climate change, agricultural chemicals, and industrialization. This study investigated how three abiotic stress factors influence antioxidant enzyme activity, MDA levels, DPPH free radical scavenging capacity, chlorophyll, carotenoids, active compounds, and gene expression in different T. hemsleyanum strains. The comprehensive evaluation indicates that the ZJWZ strain holds potential as a preferred parental material for future resistance breeding. Furthermore, PAL gene expression was strongly positively correlated with flavonoid and phenol contents, highlighting its role in the stress response through the phenylpropanoid-flavonoid pathway. This study contributes to the standardization of the production and breeding of superior strains of T. hemsleyanum . It also lays the foundation for investigating how plants react to environmental stressors.
研究领域:
植物学
·
药用植物学
·
环境生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）