PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Chengyi Si,Yawen Zhang,Le Li,Tian Zhang,Hongyu Liu,Ao Men,Xiaoqiang Fan,Minhao Zhu
Despite methylphenylsiloxane (MPS) possesses heat-resistance and corrosion resistance , the brittleness hinders its widespread application. Herein, the polyimide (PI) and Ti 3 AlC 2 were introduced for modifying MPS, thereby preparing the T-PI-MPS coating. The bilayer structure of surface-enriched MPS and internal-enriched PI was achieved by controlling the addition amount along with the density difference. The results indicate that the T-PI-MPS coating achieved a contact angle of 95.1° and exhibited corrosion resistance to salt spray for 28 days. Compared to PI-MPS, the wear rate of T-PI-MPS was reduced by 85 % and the friction coefficient declined from 0.75 to 0.58. As expected, T-PI-MPS exhibited exceptional excellent heat-resistance. The exceptional performance is attributed to the following three factors: I. the MPS-enriched layer is characterized by a stable Si O chain organization. This structure gives the corrosion resistance and water resistance, and prevents the hydrolytic swelling of PI. II. the PI-enriched layer is constructed from imide bonds, which give the coating superior friction performance due to its high load-bearing capacity. III. the incorporation of Ti 3 AlC 2 plays a role in mitigating internal defects, prolonging the corrosion path, and inhibiting cracks due to its unique nanolayered structure, high temperature resistance, and hardness.
研究领域:
材料科学
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腐蚀与防护
·
表面工程
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DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2014
·Vol. 406
·期 28
·7213-7220
·
IF 3.578
Gao Lin,Wang Jixiang,Li Xiuying,Yan Yongsheng,Li Chunxiang,Pan Jianming
In this study, we report here a general protocol for making core-shell magnetic Fe 3 O 4 /SiO 2 -MPS/MIPs (MPS = 3-(methacryloxyl) propyl trimethoxysilane, MIPs = molecularly imprinted polymers, Fe 3 O 4 /SiO 2 -MPS as core, MIPs as shell) via a surface molecular imprinting technique for optical detection of trace λ -cyhalothrin. The fluorescent molecularly imprinted polymer shell was first prepared by copolymerization of acrylamide with a small quantity of allyl fluorescein in the presence of λ -cyhalothrin to form recognition sites without doping. The magnetic Fe 3 O 4 /SiO 2 -MPS/MIPs exhibited paramagnetism, high fluorescence intensity, and highly selective recognition. Using fluorescence quenching as a detecting tool, Fe 3 O 4 /SiO 2 -MPS/MIPs were successfully applied to selectively and sensitively detect λ -cyhalothrin, and a linear relationship could be obtained covering a wide concentration range of 0–50 nM with a correlation coefficient of 0.9962 described by the Stern-Volmer equation. The experimental results of practical detection revealed that magnetic Fe 3 O 4 /SiO 2 -MPS/MIPs as an attractive recognition element was satisfactory for determination of trace λ -cyhalothrin in honey samples. This study, therefore, demonstrated the potential of MIPs for detection of λ -cyhalothrin in food.
研究领域:
分析化学
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食品安全
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环境科学
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DOI
PubMed
高影响因子
RSC Advances
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2018
·Vol. 8
·期 7
·3910-3918
·
IF 2.936
Xiaotian Zhang,Yangyi Sun,Yijing Mao,Kunlin Chen,Zhihai Cao,Dongming Qi
This paper presents a simple and controllable method for the synthesis of monodisperse nanometer-sized organic–inorganic raspberry-like polystyrene (PS)–SiO2 nanocomposite particles (NCPs) via Pickering emulsion polymerization, by simply using a silane coupling agent, 3-(trimethoxysilyl)propyl methacrylate (MPS), as an auxiliary monomer and controlling its hydrolysis/condensation processes and amount. In this method, when MPS was stirred in acidic water with styrene (St) for a period of time, and then a basic silica solution added, raspberry-like PS–SiO2 NCPs were directly obtained after the polymerization. The whole process needs neither surface treatment for the silica particles nor additional surfactants or stabilizers. We propose that a silica-stabilized Pickering emulsion is formed through Si–OH reaction between the hydrolysis/condensation products of MPS distributed on the St droplets surface and the silica particles.
研究领域:
材料科学
·
高分子化学
·
纳米技术
·
胶体与界面科学
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
·
IF 4.6
Y. Yan,F.F. Huang,D.W. Wu,L. Li,N. Zhang,M.L. Huang
MPS-TGA synergy enables stable, controllable cyanide-free Au Sn co-deposition. • MPS selectively coordinates with Au + , while TGA coordinates with both Au + and Sn 2+ . • Au Sn co-deposition follows an irreversible, diffusion-controlled mechanism. • Baths remain stable for six months, consistently yielding reproducible Au Sn coatings. • Au Sn eutectic coating is mirror-bright, flat ( R a < 30 nm) and homogeneous after reflow. To replace toxic cyanide-based and unstable complex systems, a cyanide-free Au Sn electroplating bath using sodium 3-mercapto-1-propanesulfonate (MPS) and thioglycolic acid (TGA) as coordinating ligands, and the underlying co-deposition mechanism is systematically elucidated. The bath enables green processing, high bath stability (stable for six months) and superior coating quality. Electrochemical analyses reveal that MPS selectively coordinates with Au + , whereas TGA coordinates with both Au + and Sn 2+ , forming stable Au-MPS-TGA and Sn-TGA complexes. This synergistic coordination negatively shifts the deposition onset potentials of Au and Sn to −0.99 V and − 1.09 V (vs. SCE), respectively, narrowing their gap to 0.1 V and establishing the Au Sn co-deposition onset at −1.03 V (vs. SCE). Optimal concentration ratios are c (MPS): c (Au) = 8:1–12:1, c (SnCl 2 ): c (Au) = 3.0:1–4.0:1 and c (TGA): c (Au) = 8:1–10:1, under which Sn deposition is accelerated and the operating current density range is broadened to 2–6 ASD, yielding controllable and reproducible coating compositions (16.7–50.0 at.%Sn). The Au Sn co-deposition follows an irreversible, diffusion-controlled mechanism with a low activation energy ( E a ) of 9.50–27.36 kJ/mol, driven by sufficient overpotential to overcome the initial energy barrier for complex dissociation, thereby promoting fine-grained nucleation and growth. Consequently, the mirror-bright, flat Au Sn eutectic coating electroplated at 3 A/dm 2 (ASD) exhibits dense, uniform and residue-free deposits, which transform into a homogeneous eutectic microstructure after reflow. Download: Download high-res image (499KB) Download: Download full-size image
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高影响因子
SYNTHETIC METALS
·
2014
·
IF 2.222
Youxiong Zhang,Mingliang Xin,Weihong Lin,Zhiwei Yu,Jun Peng,Kai Xu,Mingcai Chen
The synthesis by in situ oxidative polymerization of poly(5-methoxyl-2-(3-sulfopropoxyl)-1,4-phenylenevinylene) (MPS-PPV)/poly(3,4-ethylenedioxythiophene) (PEDOT) composite particles with high surface area in aqueous dispersion of MPS-PPV was reported. The nanostructure and growth mechanism of MPS-PPV/PEDOT composite particles were investigated in detail by FE-SEM and TEM, as well as XRD. PEDOT appeared to have used the tangled-worm like structures of MPS-PPV assembled in the presence of FeCl 3 as a scaffold for polymerization, wrapping itself around the tangled worms like bark on a tree. Cyclic voltammetry (CV) was used to qualitatively characterize the pseudo-capacitance properties of MPS-PPV/PEDOT composite particles. Their mass-specific capacitance and cycling stability were calculated by cyclic voltammetry cycles at different potential scan rates. The results showed that the maximum mass specific capacitance for MPS-PPV/PEDOT composite particles increases with the increase of the weight ratio of MPS-PPV, which can be achieved as high as 102 F g −1 . Moreover, the materials exhibited high cycling stability and retained approximately 45% of their maximum total capacitance, which was higher than that of pure PEDOT (approximately 40%), as the scan rate approaches 25 mV s −1 . These results make the composite materials available in the field of electronic devices.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
THERMOCHIMICA ACTA
·
2017
·
IF 2.236
Xia Gao,Tianbo Zhao,Guan Luo,Baohui Zheng,Hui Huang,Xue Han,Yuqiao Chai
A facile method was developed for encapsulating paraffin wax with St-DVB-SiO 2 organic−inorganic hybrid shells through the combination of suspension emulsion polymerization and hydrolysis and condensation reaction. In this work, the influence of TEOS/MPS mass ratios on the morphology, particle size distribution (PSD), content of core materials, latent heat storage capacity, thermal conductivity and stability of these microcapsules has been studied. SEM and PSD analysis showed that the fabricated microcapsules had a bowl-like shape with concaves on the shell. Moreover, SEM and TGA results jointly illustrated that the higher amount of MPS incorporated into the experimental process, the more SiO 2 particles bonded on the shell of microcapsules. DSC measurements revealed that the microcapsules had a melting temperature range of 44.36–55.03 °C and latent heat storage capacities of 38.90–95.67 J/g. It was suggested that microencapsulated paraffin wax with St-DVB-SiO 2 hybrid shells has been synthesized successfully.
研究领域:
材料科学
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化学工程
·
热能存储
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DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2022
·
IF 9.988
Zongrui Li,Shengsheng Li,Liangzhong Li,Lin Tao,Xiaohui Zhu,Ruixue Ma,Bingbing Sun,Yanhong Zhang,Yunjiang Yu
The presence of microplastics (MPs) and the associated organic pollutants in the aquatic environment has attracted growing concern in recent years. MPs could compete with chemicals for adsorption sites on the surface of sediment, affecting the sorption processes of pollutants on sediment. However, few studies focused on the binary system of microplastics-sediment (MPs-S), which appear much common in aquatic environment. Herein, we investigated the interactions between a continuously used flame retardant tetrabromobisphenol A (TBBPA) and four MPs-S complexes (PVC–S, PE-S, PP-S and PS-S). The equilibrium adsorption capacities were 17.1, 15.6, 15.4, and 14.0 mg/kg for PVC-S, PS-S, PE-S, and PP-S, respectively. Kinetics suggest that adsorption behavior of TBBPA was fitted by pseudo-second-order model. Co-adsorption of TBBPA in binary systems were much lower than the sum of each simple system, which may be due to the mutually occupied adsorption sites. Higher ionic strength and lower dissolved organic matter strengthened the sorption of TBBPA onto MPs-S complexes. The enhanced sorption capacities for TBBPA were observed with elevated proportion and small particle size of MPs in the MPs-S complexes. This study contributes to the knowledge on the impact of MPs in partitioning of organic pollutants in-between solid and aqueous phases in the aquatic environment.
研究领域:
环境科学
·
污染生态学
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Yan Xu,Bing Wu,Zhiyuan Zhang,Yingjie Mai,Zemin Ling,Liming Bian,Yang Chen,Fuxin Wei
The regeneration of tendons remains a major challenge in tissue engineering. In this study, we present an original scaffold-based approach for tendon repair that combines decellularized tendon matrix microparticles (DTM-MPs), exosomes derived from human adipose-derived stem/progenitor cells (sub-Exos), and collagen-binding domain (CBD) peptides. This hybrid scaffold (DTM-MPs/CBD@sub-Exos/Gel) was fabricated using a DTM-MPs-based hydrogel to provide sustained release of bioactive exosomes at the site of injury. Characterization of the scaffold revealed high bioactivity, biocompatibility, and enhanced mechanical properties compared to controls. In vitro studies demonstrated that sub-Exos significantly enhanced tendon-specific differentiation of rat tendon-derived mesenchymal stem cells (rTD-MSCs), while CBD modification facilitated controlled exosome release and promoted tendon healing. Macrophage polarization toward the anti-inflammatory M2 phenotype was also favored in the presence of the CBD@sub-Exos-loaded scaffold. In vivo evaluations in a rat Achilles tendon defect model confirmed that the DTM-MPs/CBD@sub-Exos/Gel scaffold accelerated tendon regeneration, restored mechanical properties, and exhibited sustained exosome release. Histological analysis revealed improved tendon matrix formation, with enhanced collagen synthesis and structural alignment in the CBD@sub-Exos-modified scaffold group. These findings suggest that the DTM-MPs/CBD@sub-Exos/Gel scaffold offers a promising therapeutic strategy for tendon injury repair by promoting tissue regeneration, modulating inflammation, and enhancing tissue repair outcomes.
研究领域:
组织工程
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再生医学
·
生物医用材料
·
干细胞治疗
·
炎症调控
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DOI
PubMed
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2026
·
IF 2.7
Huiling Jia,Yuequan Jian,Jiayi Lv,Jinxiu Wu,Xiaoxiong Ma
The double-shell P (MMA-MPS)/SiO 2 /CeO 2 composite abrasive was designed and prepared through the soap-free emulsion polymerization, the sol–gel method, and the in situ chemical precipitation method. Take 3-(methacryloyloxy)propyltrimethoxysilane-modified methyl methacrylate (P (MMA-MPS)) microspheres as the core. The a SiO 2 and b SiO 2 inner shells were coated on the core in acidic and alkaline environments, respectively. The CeO 2 outer shell was then deposited on the inner shell. The morphology, structure, and chemical mechanical polishing performance on KDP crystals of composite abrasives were characterized using SEM, TEM, XRD, FTIR, XPS, and AFM. The results indicate that the P (MMA-MPS)/ a SiO 2 /CeO 2 abrasive possesses the “loose net-like” inner shell of a SiO 2 with the positive charge (-Si-OH 2 + ), leading to the sparser outer shell of CeO 2 and the expanded CeO 2 lattice. After polishing, the surface roughness (Ra) of KDP crystal is 0.69 nm, and the material removal rate (MRR) is 125.6 nm/min. The P (MMA-MPS)/ b SiO 2 /CeO 2 abrasive possesses the “dense strawberry-like” inner shell of b SiO 2 with the negative charge (-Si-O − ), which facilitates the uniform deposition of Ce 3+ through electrostatic adsorption, and forms the dense, complete and highly crystalline outer shell of CeO 2 . The proportion of Ce 3+ is increased by 2.5%. After polishing, the Ra of the KDP crystal further decreases to 0.43 nm, and the MRR increases to 146.2 nm/min. In summary, the comprehensive performance of the P (MMA-MPS)/ b SiO 2 /CeO 2 abrasive is superior to that of the P (MMA-MPS)/ a SiO 2 /CeO 2 abrasive.
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DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Yijin Wang,Meng Jiao,Zhen Zhao,Yinghui Wang,Tiezhu Li,Yihua Wei,Ruilong Li,Fei Yang
Myriad inherent and variable environmental features are controlling the assembly and succession of bacterial communities colonizing on mangrove microplastics (MPs). However, the mechanisms governing mangrove MPs-associated bacterial responses to environmental changes still remain unknown. Here, we assessed the dissimilarities of MPs-associated bacterial composition, diversity and functionality as well as quantified the niche variations of each taxon on plastispheres along river–mangrove–ocean and mangrove landward–to–seaward gradients in the Beibu Gulf, China, respectively. The bacterial richness and diversity as well as the niche breadth on mangrove sedimentary MPs dramatically decreased from landward to seaward regions. Characterizing the niche variations linked the difference of ecological drivers of MPs-associated bacterial populations and functions between river–mangrove–ocean (microplastic properties) and mangrove landward–to–seaward plastispheres (sediment physicochemical properties) to the trade-offs between selective stress exerted by inherent plastic substrates and microbial competitive stress imposed by environmental conditions. Notably, Rhodococcus erythropolis was predicted to be the generalist species and closely associated to biogeochemical cycles of mangrove plastispheres. Our work provides a reliable pathway for tackling the hidden mechanisms of environmental factors driving MPs-associated microbe from perspectives of niches and highlights the spatial dynamic variations of mangrove MPs-associated bacteria.
研究领域:
环境微生物学
·
生态学
·
海洋科学
·
微生物生态学
·
污染研究
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Jiayao Gao,Chen Chen,Linshan Wang,Zhenyu Wang,You Fu,Yaxin Li,Yinghang Kou,Zilong Liu,Yiming Wang,Hongbin Sun
Aluminum-water (Al-H2O) batteries, enabling on-demand high-purity hydrogen production and simultaneous power output, hold great promise for hydrogen energy and electrochemical energy storage applications. However, severe self-corrosion of aluminum anode and parasitic hydrogen evolution reaction (HER) in highly alkaline electrolytes hinder their practical deployment. This work proposes a novel organic-inorganic hybrid corrosion inhibitor comprising sodium 3-mercapto-1-propanesulfonate (MPS) and zinc oxide (ZnO). Combined experimental and computational investigations demonstrate that a dense, robust adsorption-deposition composite protective layer is formed on the anode surface via a "molecular bridging" synergistic mechanism, delivering a corrosion inhibition efficiency of 72.9%. In alkaline Al-H2O full-cell tests, the battery achieves 77.5% anode utilization, and a specific capacity of 2309 mAh g-1 at 20 mA cm-2. This work offers valuable guidance for designing high-performance hybrid corrosion inhibitors for Al anodes.
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Hui Zhang,Jiangyu Yao,Guyu Xiao,Jianhui Xie,Shuying Mao,Chenghong Sun,Jingchun Yao,Jizhong Yan,Pengfei Tu
Target discovery of natural products is a key step in the development of new drugs, and it is also a difficult speed-limiting step. In this study, a traditional Chinese medicine microspheres (TCM-MPs) target fishing strategy was developed to discover the key drug targets from complex system. The microspheres are composed of Fe 3 O 4 magnetic nanolayer, oleic acid modified layer, the photoaffinity group (4- [3-(Trifluoromethyl)-3H-diazirin-3-yl] benzoic acid, TAD) layer and active small molecule layer from inside to outside. TAD produces highly reactive carbene under ultraviolet light, which can realize the self-assembly and fixation of drug active small molecules with non-selective properties. Here, taking Shenqi Jiangtang Granules (SJG) as an example, the constructed TCM-MPs was used to fish the related proteins of human glomerular mesangial cells (HMCs) lysate. 28 differential proteins were screened. According to the target analysis based on bioinformatics, GNAS was selected as the key target, which participated in insulin secretion and cAMP signaling pathway. To further verify the interaction effect of GNAS and small molecules, a reverse fishing technique was established based on bio-layer interferometry (BLI) coupled with UHPLC-Q/TOF-MS/MS. The results displayed that 26 small molecules may potentially interact with GNAS, and 7 of them were found to have strong binding activity. In vitro experiments for HMCs have shown that 7 active compounds can significantly activate the cAMP pathway by binding to GNAS. The developed TCM-MPs target fishing strategy combined with BLI reverse fishing technology to screen out key proteins that directly interact with active ingredients from complex target protein systems is significant for the discovery of drug targets for complex systems of TCM.
研究领域:
药学
·
生物技术
·
分子生物学
·
中医药
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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）