ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Jing Liu,Bo Zheng,Pei Wang,Xingang Wang,Bin Zhang,Qiuping Shi,Tingfei Xi,Ming Chen,Shaokang Guan
Bioabsorbable magnesium alloys are becoming prominent as temporary functional implants, as they avoid the risks generated by permanent metallic implants such as persistent inflammation and late restenosis. Nevertheless, the overfast corrosion of Mg alloys under physiological conditions hinders their wider application as medical implant materials. Here we investigate a simple one-step process to introduce a cross-linked 3-amino-propyltrimethoxysilane (APTES) silane physical barrier layer on the surface of Mg–Zn–Y–Nd alloys prior to electrostatic spraying with rapamycin-eluting poly(lactic-co-glycolic acid) (PLGA) layer. Surface microstructure was characterized by scanning electron microscope and Fourier transform infrared spectroscopy. Nanoscratch test verified the superior adhesion strength of PLGA coating in the group pretreated with APTES. Electrochemical tests combined with long-term immersion results suggested that the preferable in vitro anticorrosion behavior could be achieved by dense APTES barrier. Cell morphology and proliferation data demonstrated that APTES pretreated group resulted in remarkably preferable compatibility for both human umbilical vein endothelial cells and vascular smooth muscle cells. On the basis of excellent in vitro mechenical property, the animal study on the APTES pretreated Mg–Zn–Y–Nd stent implanted into porcine coronary arteries confirmed benign tissue compatibility as well as re-endothelialization without thrombogenesis or in-stent restenosis at six-month followup.
研究领域:
生物材料学
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医学工程
·
组织工程
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 26
·16581-16588
·
IF 4.036
M. S. Bacchu,M. R. Ali,M. N. Hasan,M. R. A. Mamun,M. I. Hossain,M. Z. H. Khan
This work demonstrates a simple and inexpensive electrochemical biosensing pathway for selective and sensitive recognition of 17β-estradiol (E2) in environmental and food samples. The biosensing system is based on graphitic carbon nitride (g-C3N4) and a conductive polymer 3-aminopropyltriethoxysilane (APTES). The proposed biosensor shows the ability to detect E2 in attomolar levels within a wide linear logarithm concentration range of 1 × 10−6 to 1 × 10−18 mol L−1 with a limit of detection (LOD) of 9.9 × 10−19 mol L−1. The selectivity of the developed biosensor was confirmed by conducting the DPV of similarly structured hormones and naturally occurring substances. The proposed biosensor is highly stable and applicable to detect E2 in the presence of spiked food and environmental samples with satisfactory recoveries ranging from 95.1 to 104.8%. So, the designed electrochemical biosensor might be an effective alternative tool for the detection of E2 and other endogenous substances to attain food safety.
研究领域:
分析化学
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环境科学
·
食品科学
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Tao Zhou,Sheng Huang,Dongjie Niu,Lianghu Su,Guangyin Zhen,Youcai Zhao
Humic substances are produced during the microbial degradation of biomolecules and should be recycled because they are an abundant source of carbon, hydrogen, oxygen, and nitrogen. Herein, (3-aminopropyl)triethoxysilane (APTES) was first used to recover carbon-rich water-soluble humic acid (HA) from wastewater, and the operational parameters (i.e., pH, solution temperature, APTES dosage, reaction time, and initial HA concentration) were optimized for separation efficiency. The results showed that the optimal HA separation efficiency (96.7%) could be achieved at an initial HA concentration of 250 mg/L, APTES dosage 4 mL/L, equilibration time 10 min, pH 3.0, and temperature 35 °C. Furthermore, cations (Mg2+ and Ca2+) led to a remarkable separation of HA, while anions (CO32– and SO42–) weakened the aggregation and deposition of HA. Mechanism analysis unveiled that ladderlike oligomeric aminosilanes (LAOAs) were generated by the hydrolysis, condensation, and self-assembly of APTES. The LAOAs were involved in adsorption bridging action with HA, thus efficiently promoting the precipitation of humic substances. The described carbon separation technique (converting dissolved matter into insoluble substances) can be a promising option for the efficient recovery and reutilization of carbon resources in high-concentration organic wastewater.
研究领域:
环境科学
·
废水处理
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产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2020
·
IF 0
Hong Qian Dai,Yuan Lu,Zhi Hin Ou,Min Xu
Fe3O4-APTES-CS2 was prepared by modification of Fe3O4 with 3-aminopropyltriethoxysilane (APTES) and carbon disulfide (CS2). Lipase was covalently bonded to Fe3O4-APTES-CS2 to obtain the immobilized lipase Fe3O4-APTES-CS2-lipase. The textural characteristic of Fe3O4-APTES-CS2-lipase was assessed by scanning electron microscopy. The optimal immobilization conditions were 2.5 mg/mL lipase, pH 7.0, 35 °C, 3 h. The loading amount of lipase was 119.0 mg/g carrier. The immobilization efficiency reached 57%. (R)-(+)-N-acetyl-1-methyl-3-amphetamine was synthesized by Fe3O4-APTES-CS2-Li- pase. The conversion, enantiomeric excess of (R)-(+)-N-acetyl-1-methyl-3-amphet-a- mine and E value reached 36.8%, 98.5% and 132, respectivel.
研究领域:
化学
·
生物化学
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材料科学
·
催化
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DOI
Colloids and Interfaces
·
2025
·Vol. 9
·期 4
·49
·
IF 3.2
Qian Lei,Lei Rao,Wencan Deng,Xiuqin Ao,Fan Fang,Wei Chen,Jiaji Cheng,Haodong Tang,Junjie Hao
Lead sulfide colloidal quantum dots (PbS QDs) have demonstrated great potential in short-wave infrared (SWIR) photodetectors due to their tunable bandgap, low cost, and broad spectral response. While significant progress has been made in surface ligand modification and defect state passivation, studies focusing on the interface between QDs and electrodes remain limited, which hinders further improvement in device performance. In this work, we propose an interface engineering strategy based on 3-aminopropyltriethoxysilane (APTES) to enhance the interfacial contact between PbS QD films and ITO interdigitated electrodes, thereby significantly boosting the overall performance of SWIR photodetectors. Experimental results demonstrate that the optimal 0.5 h APTES treatment duration significantly enhances responsivity by achieving balanced interface passivation and charge carrier transport. Moreover, The APTES-modified device exhibits a controllable dark current and faster photo-response under 1310 nm illumination. This interface engineering approach provides an effective pathway for the development of high-performance PbS QD-based SWIR photodetectors, with promising applications in infrared imaging, spectroscopy, and optical communication.
研究领域:
纳米技术
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光电子学
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材料科学
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半导体器件
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产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2018
·Vol. 15
·期 5
·1107-1115
·
IF 1.619
Luo Jian,Wang Jihu,Wen Shaoguo,Yu Dayang,Wu Youtong,Sun Kai
In this work, reduced sulfonated graphene (RSG) containing free amine groups was prepared and modified by 3-aminopropyltriethoxysilane (APTES) and reduction by diethanolamine (DEA). In addition, waterborne polyurethane (WPU) composite coatings were prepared by adding RSG as an anticorrosive filler to WPU. From the results of Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy (SEM), it can be found that sulfonated graphene was modified with APTES and successfully reduced by DEA. The SEM images illustrated that RSG was uniformly doped in the WPU. With increasing RSG content, the hydrophobicity of the RSG/WPU films increased due to the strong covalent interaction between RSG and WPU. Finally, the corrosion resistance of the coating was characterized by polarization curves and salt spray tests.
研究领域:
材料科学
·
高分子化学
·
表面工程
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腐蚀与防护
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纳米复合材料
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DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Qianqian Zhao,Haiqi Jia,Xiaohui Yi,Shaolu Li,Genghao Gong,Yunxia Hu
The physicochemical properties of the polyamide reverse osmosis (PA RO) membrane surface play a crucial role in membrane fouling. In this work, a silicon-based material, γ-Aminopropyl triethoxysilane (APTES), was incorporated onto the PA membrane surface by self-crosslinking induced surface modification to improve its antifouling properties. FTIR and XPS analyses reveal that APTES primarily bonded to the pristine PA membrane via amidation between –NH 2 groups in APTES and residual –COCl groups on the membrane surface, and then combined with each other to form Si–O–Si groups (even Si–O–Si networks). The incorporation of APTES reduces the membrane surface energy and roughness, and the surface potential of the membranes can be adjusted by varying the APTES addition. Meanwhile, the pure water permeance of the APTES-PA membrane reached ~3.77 LMH/bar while maintaining a NaCl rejection of ~98.65%. Additionally, although the negative charge of the APTES-PA (M0.15) membrane increases, the antifouling against electropositive small molecular foulants is enhanced, mainly due to the low-surface-energy of the APTES-modified layer. Furthermore, the stability of the APTES-modified layer in the presence of electronegative small molecular foulants with strong decontamination capabilities can be reinforced by a simple high-temperature heat treatment. Broadly speaking, surface modification of the PA RO membrane by APTES combining grafting with self-crosslinking induced method is beneficial for its anti-fouling and reuse.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
NANO
·
2018
·
IF 1.1
Zongxue Yu,Xia Min,Fei Li,Qi Chen
In the study, the Ag–SiO 2 –APTES nanocomposite was synthesized via the self-assembly method to prepare Ag–SiO 2 and subsequently used 3-aminopropyltriethoxysilane (APTES) to functionalize its surface. The as-prepared Ag–SiO 2 –APTES nanocomposite was embedded into poly(vinylidene fluoride) (PVDF) membrane by the co-blending way to fabricate the Ag–SiO 2 –APTES membrane. The Ag–SiO 2 –APTES nanocomposites were characterized by X-ray diffraction (XRD). These membrane materials were characterized by field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM) and FT-IR spectra. The performance of membrane was investigated simultaneously for removing the organic dye methylene blue (MB), Rhodamine B, Direct Red 28 and anti-microbial ability. The experimental results demonstrated that the Ag–SiO 2 –APTES modified membrane were presented to be more hydrophilic with a contact angle 55.6 ∘ , whereas the pristine PVDF membrane was 81.8 ∘ . The dye rejection ratios were also improved after adding Ag–SiO 2 –APTES, which reached 86.8% for MB, 87% Rhodamine B, 88% for Direct Red 28, besides, the removal rate of MB was about 98.7% at pH = 11. More importantly, the Ag–SiO 2 –APTES membranes exhibited excellent antifouling properties for treating MB solution and could reach 85% of flux recovery ratio after four cyclic experiment. Finally, via inhibition zone method of antimicrobial test Ag–SiO 2 –APTES membrane exhibited the antimicrobial activity against Escherichia coli ( E. coli ) excellently. The novel antifouling and antibacterial Ag–SiO 2 –APTES membrane has a potential for dye wastewater treatment and water purity.
研究领域:
材料科学
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环境工程
·
化学工程
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产品关联
DOI
高影响因子
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
·
2022
·Vol. 77
·期 12
·1217-1222
·
IF 1.712
Song Xie,Yushan Liu,Hongliang Chen,Xiaozhan Yang,Wenlin Feng
A cadmium ion (Cd 2+ ) sensor based on polyvinyl alcohol (PVA)/tetraethyl orthosilicate (TEOS)/3-aminopropyl triethoxysilane (APTES) film integrated Mach–Zehnder interferometer was fabricated and evaluated. The three core fiber (TCF) is spliced with two single mode fibers (SMFs), one end of TCF and SMF are spliced with enlarged taper, and the other end of TCF is directly spliced with another SMF. PVA/TEOS/APTES composite film is coated on the surface of TCF. When the Cd 2+ is adsorbed by the sensing film, the relative refractive index of TCF cladding changes, the output interference trough wavelength shifts. By monitoring the wavelength shift information of the interference trough, the concentration of Cd 2+ will be obtained. In the concentration range of 0–0.4 μM, with the increase of Cd 2+ concentration, the interference trough shows a red shift. The sensitivity and the detection limit of the sensor are 7 nm/μM and 0.0143 μM (1.6 ppb), respectively. The sensor has excellent selectivity and good pH stability. It has the advantages of easy preparation, simple structure, and has potential application for the detection of trace Cd 2+ .
研究领域:
光学传感
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环境监测
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材料科学
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分析化学
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DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Jiaxue Yang,Mengyuan Liao,Gaoying Hong,Shiqi Dai,Jiadi Shen,Haifeng Xie,Chen Chen
To investigate the effects of 3-aminopropyltriethoxysilane (APTES)- or (3-mercaptopropyl)trimethoxysilane (MPTS)-conditioned nanozirconia fillers on the mechanical properties of Bis-GMA-based resin composites. The conditioned fillers were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and thermodynamic calculations. They were then used to prepare Bis-GMA-based resin composites, whose flexural strength and elastic modulus were evaluated. The Cell Counting Kit-8 (CCK-8) assessed the composites’ cytotoxicity. The FTIR spectra of the conditioned fillers showed new absorption bands at 1569 and 1100 cm–1, indicating successful grafting of APTES or MPTS onto nanozirconia. XPS confirmed the Zr–O–Si bonds in the APTES- or MPTS-conditioned fillers at contents of 2.02 and 6.98%, respectively. Thermodynamic calculations reaffirmed the chemical binding between the two silanes and nanozirconia fillers. Composites containing the conditioned nanozirconia fillers had significantly greater flexural strengths (APTES, 121.02 ± 8.31 MPa; MPTS, 132.80 ± 15.80 MPa; control, 94.84 ± 9.28 MPa) and elastic moduli (8.76 ± 0.52, 9.24 ± 0.60, and 7.44 ± 0.83 GPa, respectively) than a control with untreated fillers. The cytotoxicity assay identified no significant cytotoxicity by composites containing the conditioned fillers. Silanes were previously considered to be unable to chemically condition zirconia to bond with resin. Inclusion of APTES- or MPTS-conditioned nanozirconia fillers can improve the mechanical properties of Bis-GMA-based resin composites without obvious cytotoxicity in this study.
研究领域:
材料科学
·
牙科材料
·
高分子科学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 87
·55489-55495
·
IF 3.108
Yumei Bu,Bin Cui,Weiwei Zhao,Zhenfeng Yang
A carrier possessing simple structure and composition, but with microwave-targeted-fluorescence multifunctional properties to precisely control the delivery of the drug was prepared. Herein, we have constructed the multifunctional Fe3O4@ZnAl2O4:Eu3+@mSiO2–APTES core–shell drug-carrier via direct precipitation method and sol–gel process with surfactant-assistance approach. This carrier is a monodisperse microsphere with an average particle size of 325 nm. Fe3O4 in the core has a high saturation magnetization and provides the Fe3O4@ZnAl2O4:Eu3+@mSiO2–APTES with good drug targeting properties. The ZnAl2O4:Eu3+ interlayer has the characteristic of fluorescent luminescence and can be used to monitor the transport of drugs in the body in real time. In addition, the ZnAl2O4:Eu3+ as a dielectric loss microwave absorbing material combines with the high magnetic loss Fe3O4 to form a composite material, which improved the microwave thermal response. Over 78.2% of VP16 molecules were released under microwave trigger. In addition, mesoporous silica nanoparticles in the outer layer improve the drug loading efficiency through organic modification. The results indicated that this multifunctional drug-carrier with simple structure and composition is a potential controlled drug delivery system in cancer therapy.
研究领域:
材料科学
·
纳米技术
·
药学
·
生物医学工程
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产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2023
·
IF 5.1
Yuxuan Ma,Yajing Sun,Jifeng Guo,Xiao Wei
In this work, a novel in-situ synthetic TA-APTES NPs multifunctional imprinted membrane was fabricated by tanning-inspired coating for selective adsorption of tetrabromobisphenol a (TBBPA) and oil-water emulsion separation. Tannic acid (TA) from natural plants can be cross-linked with 3-aminopropyltriethoxysilane (APTES) by a simple green method to form nanosphere structures with secondary reaction sites. With TA-APTES coating, the membrane can be quickly converted from hydrophobic to super-hydrophilic. TEOS is not only used as a cross-linking agent in imprinting process，but also can be used for TA-APTES hybridization on the membrane surface to introduce stable silicone hydroxyl groups to the membrane surface. The modified membranes showed good hydrophilicity with a water flux of 27,272Lm −2 h −1 at 0.1Mpa, which was 18 times higher than that of pure PVDF membranes. In addition, the separation efficiency of four different types of oil-water emulsions (n-hexane, petroleum ether, dichloromethane and kerosene) reached 99.6%, 98.3%, 95.6%, and 98.7%, respectively. Among them, the oil water emulsion flux of dichloromethane could reach 1000.1. what's more, the prepared membranes also maintained relatively high selective separation efficiencies of TBBPA in oil-water mixtures. To better explain the mechanism of the TBBPA reaction process, the active sites in the TBBPA reaction process were calculated and predicted by density generalization theory (DFT). The Br and phenolic hydroxyl groups on the benzene ring of TBBPA showed higher activity and might be the main reaction sites. In addition, the imprinted composite membranes can be easily regenerated and reused without performance loss through a simple cleaning process. The coating process inspired by natural polyphenol chemistry has the advantage of being green, cost-effective and low energy, showing real potential in multifunctional membrane applications.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）