CRYSTAL GROWTH & DESIGN
·
2026
·Vol. 26
·期 17
·6875-6885
·
IF 3.6
Li Yanan,Wang Haijun,Yu Qianqian,Chen Yilin,Zhang Fuyuan
Poly(vinylidene
fluoride) (PVDF)-based piezoelectric materials
are commonly constrained by low polar-phase content. Here, we report
an APTES-assisted in situ crystallization strategy to fabricate PVDF/APTES@CsPbBr 3 nanocomposites. APTES acts as a bifunctional linker that
passivates CsPbBr 3 quantum dot surfaces while introducing
protonated ammonium (−NH 3 + ) groups. When
incorporated into electrospun PVDF fibers, these -NH 3 + groups interact with fluorine atoms of PVDF chains via ionic-dipole
interactions, as evidenced by a blue shift of the C–F stretching
band in Fourier-transform infrared (FT-IR). This molecular-level interaction
lowers the free energy barrier for polar phase nucleation, promoting
the transformation from nonpolar α phase to electroactive β
phase, as confirmed by X-ray diffraction (XRD), FT-IR, and differential
scanning calorimetry (DSC). The optimized composite achieves a markedly
higher β-phase fraction compared to pure PVDF and unmodified
CsPbBr 3 composites. As a functional demonstration, the
material delivers substantially enhanced piezoelectric output (130
V) and operates as a self-powered motion sensor. When coupled with
a support vector machine classifier, the system achieves high-accuracy
recognition (94.6%) of diverse human activities. This work establishes
APTES-mediated interfacial engineering as a versatile platform for
controlling polymer crystallization in hybrid systems toward high-performance
piezoelectric applications, with the output enhancement attributed
to a synergistic combination of increased β-phase fraction,
intrinsic piezoelectricity of the perovskite fillers, improved interfacial
stress transfer, and refined fiber morphology.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yingfa Liu,Zhongxiang Bai,Guo Lin,Lingling Wang,Xiaoqian Xu,Liang He,Xiaobo Liu
The excellent water transport and molecular sieving properties of graphene oxide (GO)-based membranes have shown application prospects in solving the freshwater crisis. However, it is challenging to further increase water permeability while ensuring separation efficiency, and the destruction of the membrane structure caused by the electrostatic repulsion between the graphene oxide nanosheets also hinders its practical application. In this study, a simple vacuum-assisted method is proposed to prepare a chemical cross-linking mediated composite graphene oxide nanofiltration membrane (GO-TA-APTES-x) by adding tannic acid (TA)-aminopropyltriethoxysilane (APTES) nanoparticles (TA-APTES NPs). Thanks to the expansion of GO membrane interlayer spacing by TA-APTES NPs, the permeability of the GO-TA-APTES-10 membrane is 15 times higher than that of the original GO membrane, and the rejection rate of Congo red remains at 99.9%. In addition, TA-APTES NPs improves the application stability of composite membrane in water environment by means of chemical crosslinking agent, which is expected to promote the transformation of GO nanofiltration membrane from the laboratory environment to industrial application.
研究领域:
材料科学
·
环境工程
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Peiqing Zhang,Sihang Li,Fan Xiao,Yongfang Xiao,Yi Zhang,Zhongguo Shan,Zhenyu Li,Haihua Wang
Membrane distillation (MD) represents a promising advance in wastewater purification, contributing to the mitigation of water scarcity. Hydrophobic poly(vinylidene fluoride) (PVDF) microporous membrane is susceptible to wetting by low surface tension substances, leading to fouling. To address this, PVDF membrane was superhydrophobically modified using modified ZIF-8 to obtain two composite membranes, AZ/PVDF and Z@C/PVDF. AZ/PVDF and Z@C/PVDF composite membranes were prepared by coating more dispersible APTES-ZIF-8 and ZIF-8@MWCNT, respectively, onto the surface of PVDF membrane. The hydrophobicity of the composite membranes was regulated by silane types, fluorination methods, and fluorination time, resulting in reduced surface roughness and increased surface energy. The contact angles of AZ/PVDF and Z@C/PVDF were 154.2 ± 3.4° and 156.8 ± 4.2°, respectively. Both AZ/PVDF and Z@C/PVDF membranes demonstrated outstanding mechanical, thermal, and chemical stability. AZ/PVDF and Z@C/PVDF membranes outperformed PVDF membrane, extending operation times by 2 h and 3 h, respectively, without obvious NaCl crystals. Furthermore, Z@C/PVDF membrane exhibited superior resistance to wetting by SDS than AZ/PVDF and PVDF membranes, treating pickle brine via the direct contact MD (DCMD) process with a recovery rate of 30.2 % within 10 h. Overall, this research offers a promising approach to fabricating superhydrophobic composite membranes for high-salt brine treatment via DCMD.
研究领域:
化学工程
·
材料科学
·
环境工程
·
纳米技术
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Qianyun Tan,Shuying Pu,Guangyu Zhu,Chunxiao Yin,Gege Zhang,Zhongyao Zhang,Min Wu,Yong Tan,Fa-Qian Liu
Marine biofouling is one of the biggest problems for titanium alloys and rutile TiO 2 coatings in marine engineering applications. Hydrogel materials are a novel and environmentally benign antifouling strategy, but they cannot be stabilized on alloy surfaces to provide long-term protection. Focusing on the challenges of bonding at the hydrogel-alloy interface, a PAA/PHEMA composite hydrogel containing Cu 2 O@PEG powder was strongly bonded to the titanium alloy by forming chemical bonds with APTES. The composite hydrogel still achieves an adhesion strength of 60–70 kPa after 7 days of immersion. The samples maintained a stable copper ion leaching rate of 2.61–3.76 μg·cm −2 ·d −1 after 21 days of immersion. The coating-modified titanium alloys showed a 100 % bactericidal rate within three hours of contact with different bacteria and exhibited a high anti-algal adhesion rate of up to 99 %. In addition, the attachment mode of APTES on rutile TiO 2 was clarified for the first time by Density Functional Theory (DFT) calculations. According to DFT calculations, the adsorption energy of APTES on Ti-TiO 2 is −747.025 kJ/mol, and the adsorption energy of acrylic acid on TiO 2 -APTES is −535.152 kJ/mol. The chemical bonding connection between the hydrogel-alloy interface, as a novel interface bonding strategy, would be expected to broaden the application of titanium alloy in marine engineering.
研究领域:
材料科学
·
海洋工程
·
表面化学
·
计算化学
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Jinglei Cui,Qian Wang,Jianming Gao,Yanxia Guo,Fangqin Cheng
Rare earth elements (REE) are strategic resources and the recycling of REE in alternative resources is urgent and gets increasingly attention. However, the separation of REE in these alternative resources is still a challenge due to the low concentration of REE and multi coexisted ions in acidic system. In this study, the species distribution of REE within the pH 0–8.0 was calculated. The SBA-15 originated from coal fly ash was modified by two steps with (3-aminopropyl) triethoxysilane (APTES) and diethylenetriaminepentaacetic dianhydride (DTPADA) to obtain DTPADA-SBA-15 adsorbent, which was applied to the selective adsorption of REE. The results showed that DTPADA-SBA-15 possessed excellent adsorption performance on the selective adsorption of REE, including Eu, Gd, Tb, Nd and Sm, in acidic solution (pH 2) with multi competing ions. The FT-IR and Zeta potential characterization verified that the chemical adsorption through the coordination of O in DTPADA-SBA-15 with REE was dominant at lower pH value. The study of adsorption kinetics indicated that the adsorption of rare earth metal ions followed pseudo-second-order kinetic, of which the adsorption process followed the Langmuir isotherm model.
研究领域:
环境科学
·
材料科学
·
化学工程
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高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2016
·
IF 3.652
Zhong-Fang Li,Chuan-Jie Zhang,Li Cui,Ping Zhu,Chao Yan,Yun Liu
Flame retardant cotton fabrics were prepared based on 3-aminopropyl triethoxysilane (APTES) and sodium phytate through layer-by-layer assembly. The structure, surface morphologies before and after burning, flame retardant and thermal degradation properties of prepared cotton fabrics were examined by Fourier transform infrared analysis, scanning electron microscopy (SEM), vertical burning, cone calorimeter, thermogravimetric analysis coupled with Fourier transform infrared analysis (TG-FTIR). SEM results indicated that the product of APTES hydrolysis and sodium phytate were deposited uniformly on the surface of cotton fabrics. In the vertical burning test, after removing the ignition source, the coated cotton fabrics with 15BL extinguished at once, while the uncoated cotton fabrics were burned out, remaining only a little ash. The improved fire retardancy was due to the formed thermally stable residual char on the surface of cotton fabrics, which prevented mass/heat transfer. It is noted from TG-FTIR results that coated cotton fabrics released more H 2 O and CO 2 , and less inflammable gases than those of uncoated cotton fabrics.
研究领域:
材料科学
·
纺织工程
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xin Zhong,Yihang Zhang,Zhiguang Guo
Currently, surfactant-containing oil–water emulsions are the more difficult part of oily wastewater to treat because of their small droplet size and stable oil–water interface. Membrane separation technology is commonly used for emulsion separation due to its surface wettability and adjustable pore size. Here, tannic acid (TA) and 3-aminopropyltriethoxysilane prepolymerization solutions are used as the exchange solvents, allowing growth on the surface and inside of polyvinylidene difluoride (PVDF). Among them, the content of lithium chloride (LCM) hydrate modulates the range and amount of growth. In the pressure range of 0.1–0.7 bar, the modified hydrophilic PVDF-TA/LCM-2 membranes exhibit high pure water permeation fluxes and emulsion separation efficiencies that can be adapted to different separation conditions. At 0.2 bar, the PVDF-TA/LCM-2 achieves pure water permeate flux and emulsion separation fluxes of 1860 and 648 L m -2 h −1 bar −1 , and an emulsion separation efficiency of 99.5 %. In addition, for different kinds of oil-in-water emulsions, the high separation fluxes and high separation efficiencies indicate that PVDF-TA/LCM-2has good emulsion separation performance.
研究领域:
材料科学
·
环境工程
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yanlan Zhou,Ruishuo Guo,Huijia Wang,Xin Xu,Zhiqiang Li,Zhuolu Li,Xile Chen,Ni Li
APTES modification promotes uniform PCNC loading on PU/PEG fibers. • The composite membrane shows enhanced thermal conductivity of 0.129 W · m⁻ 1 ·K⁻1. • The membrane maintains good stability after thermal cycling and water treatment. • High solar reflectance (∼95%) enables effective temperature regulation under simulated solar irradiation. Polyethylene glycol (PEG)-based phase change fibrous membranes are promising flexible thermal management materials, but their performance is often limited by melting-induced deformation, low heat-transfer efficiency, and insufficient cycling stability. In this study, an APTES-regulated interfacial loading strategy was developed by loading amino-functionalized n-octadecane/SiO 2 phase change nanocapsules (N x -PCNCs) onto electrospun PU/PEG fibrous membranes. The effect of APTES concentration on the capsule loading state and thermal management performance was systematically investigated. Moderate APTES modification improved the loading and dispersion of PCNCs on the fiber. Among the samples, PU/PEG/N 20 -PCNCs showed a relatively uniform particle distribution and a thermal conductivity of 0.129 ± 0.015 W · m⁻ 1 · K⁻ 1 . The composite fibrous membrane maintained stable phase-change behavior after 200 melting–crystallization cycles and 20 water-treatment cycles, demonstrating good cycling stability under the tested conditions. Moreover, PU/PEG/N 20 -PCNCs exhibited an average solar reflectance of approximately 95 ± 0.8% and reduced the surface temperature by 9.2 and 2.3 °C compared with PU and PU/PEG fibrous membranes under simulated solar irradiation. These results demonstrate that APTES-regulated interfacial loading of PCNCs is an effective strategy for improving the thermal storage, stability, and temperature-buffering performance of PU/PEG phase change fibrous membranes. Download: Download high-res image (136KB) Download: Download full-size image
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2016
·
IF 2.101
Gen Liu,Chaochao Wu,Xia Zhang,Yufeng Liu,Hao Meng,Junli Xu,Yide Han,Xinxin Xu,Yan Xu
Surface functionalization of zirconium dioxide (ZrO 2 ) nano-adsorbents was carried out by using 3-aminopropyl triethoxysilane (APTES) as the modifier. The addition amount of APTES was varied to determine the optimum modification extent, and the bulk ZrO 2 microparticles were also modified by APTES for comparison. Some means, such as TEM, XRD , FT-IR, XPS and TG-DSC were used to character these ZrO 2 particles. The results showed that the APTES molecules were chemically immobilized on the surface of ZrO 2 nanoparticles via Zr O Si bonds, and the nano-ZrO 2 samples showed larger special surface area. In the adsorption of bovine serum albumin (BSA), nano-ZrO 2 samples exhibited enhanced adsorption activity, and APTES modified nano-ZrO 2 with proper APTES content presented the best adsorption property. Under the same adsorption conditions, the equilibrium adsorption capacity of BSA on APTES-ZrO 2 -2 was almost 2.3 times as that on pristine nano-ZrO 2 and 3.0 times as on bulk ZrO 2 microparticles. The increased adsorption capacity of APTES-ZrO 2 nano-adsorbents can be attributed to the chemical interaction between amino and carboxyl groups at APTES-ZrO 2 /BSA interface. The pH-dependent experiments showed that the optimum pH value for the adsorption and desorption was 5.0 and 9.0, respectively, which suggested that the adsorption and release of BSA could be controlled simply by adjusting the solution pH condition.
研究领域:
材料科学
·
化学工程
·
纳米技术
·
生物化学
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高影响因子
DESALINATION
·
2022
·
IF 11.211
Shougang Fan,Zhihao Yu,Xi Wang,Yiyi Tao,Huaiqi Shao,Mingce Long,Xiaoyan Guo
The superior hydrophilicity of graphene oxide (GO) makes it a promising candidate for improving the permeability and antifouling performance of membranes used for feed water pretreatment in desalination systems . However, the uncontrollable assembly structures of GO laminates on membrane surface restrict the full exertion of its hydrophilicity. In this study, a layer-by-layer self-assembled GO-based nanocomposite membrane with adjustable interlayer spacing and assembly layers was facilely fabricated by alternately depositing GO and (3-Aminopropyl) triethoxyilane modified silicon dioxide (SiO 2 @APTES) on membrane surface via electrostatic interaction. The fully exerted hydrophilicity of GO and well-maintained membrane pore structures facilitated the adsorption and penetration of water molecules, meanwhile, the hydration layer and electronegativity of GO effectively inhibited the adhesion of foulant. Thus, monolayer GO/SiO 2 @APTES/GO endowed P-(G/S/G) 1 membrane with more than 10-fold water flux (560.2 L m −2 h −1 ) than pure PVDF membrane (55.4 L m −2 h −1 ) without sacrificing selectivity ; and the antifouling performance was improved by nearly 50%. Moreover, the nanocomposite membrane presented robust structural stability after physicochemical cleaning. Overall, the nanocomposite membrane affords a novel facile way to fully exert the hydrophilicity of GO to improve permeability and antifouling performance, and is expected to provide an important guarantee for efficient operation of desalination system.
研究领域:
材料科学
·
环境工程
·
水处理
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高影响因子
Nanoscale
·
2026
·
IF 5.2
Hongri Wan,Xin Li,Yunjiang Wo,Wenwei Tang,Jie Yang,Fei Yu,Jinhui Hou,Zhaojian Gao,Teng Chen,Xiaofang Hu
The intricate contaminants in wastewater, such as organic dyes, pathogenic bacteria, and immiscible oils, have led to significant environmental challenges. These pollutants are detrimental to both ecological systems and human well-being and cannot be effectively removed through wastewater purification using a single material or process. To address this issue, a multifunctional three-dimensional porous polyurethane (PU) sponge was designed. In this research, surface coating technology was applied to modify PU sponge through a facile impregnation method with the addition of a mixed solution containing tannic acid (TA) and aminopropyltriethoxysilane (APTES). Owing to the presence of secondary active reaction sites in the TA–APTES coating, TA–APTES@PU could function as a reactive substrate, facilitating subsequent modifications. TA–APTES@PU was first directly immersed in silver ammonium solution for the reduction of silver ions. Ag nanoparticles can be uniformly distributed and immobilized in situ on TA–APTES@PU, which was accomplished by the residual hydroxyl groups in the TA–APTES coating. The resultant Ag@TA–APTES@PU showed superior catalytic activities in the reduction of organic dye contaminants in aqueous solutions, achieving complete degradation of RhB within 4 minutes, with an apparent rate constant (kapp) of 1.1829 min−1. Ag@TA–APTES@PU also showed excellent antibacterial activities against both gram-positive and gram-negative pathogenic bacteria. TA–APTES@PU was subsequently modified with a low-surface-energy chemical octadecylamine (ODA), converting the TA–APTES coating directly into a superhydrophobic coating (ODA@TA–APTES@PU), which was suitable for treating oily wastewater. Furthermore, Ag@TA–APTES@PU and ODA@TA–APTES@PU also exhibited remarkable recyclability in the context of dye reduction and oil–water separation, respectively. The results indicated that the TA–APTES coating could serve as an excellent platform for the fabrication of multifunctional materials with desirable properties, making it a highly potential option for the treatment of water contaminated by dyes, bacteria, and oils.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125432
·
IF 7.5
Zirui Li,Danli Lian,Xingmeng Ruan,Lulu Wang,Mengting Gao,Xiaohui Dai,Jiangdong Dai,Jianming Pan
Rapid, room-temperature, and scalable fabrication of the membrane is achieved. • The membrane exhibits excellent crude-oil antifouling ability and underwater superoleophobicity. • The membrane shows high permeation flux and excellent separation efficiency for various oil-in-water emulsions, including crude oil emulsion. • The emulsion permeation flux of the membrane almost maintains zero attenuation during long-term operation for n-hexane emulsion (3 h) and even crude oil emulsion (1 h). • The membrane remains stable after prolonged immersion in acidic, alkaline, and saline solutions. Despite the critical importance of efficient oily wastewater separation, practical implementation remains severely constrained by severe fouling, low membrane flux, and challenges in scalable production. Consequently, the rapid and scalable fabrication of superhydrophilic membranes with superior antifouling performance has become an urgent priority for treating large quantities of oily wastewater. Herein, we employed a polyphenol-metal dual autocatalytic system to rapidly and efficiently fabricate a high-throughput, anti-fouling, and scalable PDMAPAA gel @TA-APTES@PVDF hydrogel composite membrane under mild conditions. Endowed with the TA-APTES micro-nano structure and the PDMAPAA hydrogel layer, the membrane achieves high water flux (over 40000 L∙m −2 ∙h −1 ∙bar −1 ), excellent emulsion flux (over 5500 L∙m −2 ∙h −1 ∙bar −1 ) and exceptional oil-water separation efficiency (over 99.50%). The emulsion flux shows almost maintains zero attenuation during long-term operation for the n-hexane emulsion (3 h) and even the crude oil emulsion (1 h). The membrane also has excellent underwater anti-adhesion properties for crude oil. Crude oil adhered to the membrane surface can be readily removed by simple water immersion. What’s more, the membrane exhibits exceptional chemical stability, conferring robust resistance to acidic, alkaline, and saline environments. Download: Download high-res image (294KB) Download: Download full-size image
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高影响因子
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