Polymers
·
2025
·Vol. 17
·期 6
·773
·
IF 4.9
Wen Liu,Mudasir Ahmad,Pengfei Song,Qianli Fang,Qingchao Li,Guoqing Huang,Chuncai Yang
Sizing agents are essential to address the increasing demands of enhanced carbon fibers (CFs), where increasing interfacial adhesion and the analysis of mechanical properties are achieved for critical engineering applications. In this work, five types of self-emulsifying sizing agents, featuring organic polymer–inorganic nano zinc oxide (ZnO) core-shell structures with varying crosslinked polymer densities in the core, were synthesized using self-emulsifying technology through a one-pot, in situ synthetic process. This study revealed that these sizing agents exhibited a uniform particle size distribution within the range of 100–200 nm, along with excellent storage stability and thermal stability up to 300 °C. The optimized sizing agent significantly enhanced the surface properties of CFs, achieving a surface roughness of 6.04 nm and a surface energy of 74.81 mJ/m2. Moreover, the interlaminar shear strength (ILSS) and flexural strength of CF/epoxy resin (EP) composites modified with the synthesized sizing agent increased by 86% and 86.43%, respectively, compared to unoptimized composites. These improvements in mechanical properties are attributed to enhanced stress transfer at the CF/EP interface, facilitated by the interlocking mechanism of the nano ZnO particle shell and the superior anti-pressure resistance provided by the crosslinked organic polymer core.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Arabian Journal of Chemistry
·
2024
·
IF 5.3
Mina Ghoroghi,Sara Estaji,Mohammad Iman Tayouri,Reza Jahanmardi,Marcos A.L. Nobre,Hossein Ali Khonakdar
Polylactic acid (PLA) has attracted considerable attention because of its excellent properties compared to petroleum-based materials. However, improving its toughness, crystallization, and functionalities is challenging. Using a laboratory internal batch mixer, we produced unique blended nanocomposites comprising polylactic acid (PLA) as the host matrix, epoxidized soybean oil (ESO) as the plasticizer, and zinc oxide nanoparticles (ZnO NPs) as the reinforcements. The SEM-EDS test showed that neat PLA had a smooth surface, but the PLA-ZnO nanocomposite had rough micrographs and a uniform dispersion state of the nanoparticles. It was also found that adding ESO to the blend nanocomposites created a matrix droplet structure, and the size of the oil domains decreased as the ZnO content increased. All results derived from FTIR, XRD, and DSC tests were consistent with the morphological features in which ZnO NPs acted as the blend’s compatibilizer and heterogeneous nucleating agent. Our team observed that adding ESO decreased the PLA-ZnO nanocomposites’ glass transition temperature (T g ) by an average of 2 °C and increased the crystallization rate. It was also confirmed that the presence of ESO improved the flexibility and reduced the strength of the PLA. The tensile strength was further enhanced by incorporating ZnO into the blend. Adding 5 wt% of ZnO NPs increased the tensile strength of the PLA containing 10 wt% ESO by approximately 3.5 MPa. Furthermore, the tensile modulus was predicted using theoretical models; for example, the Paul model fitted with experimental findings. The addition of ESO increased the overall surface free energy of the nanocomposites. On the other hand, increasing ZnO content resulted in high contact angles and antibacterial properties of the blended nanocomposites. The favorable characteristics of the resulting films emphasized the potential use of these nanocomposite films as a promising choice for food packaging materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shanshan Qiao,Yuqing Chen,Jiachao Shen,Pei Tao,Yanhong Tang,Haokun Shi,Hao Zhang,Jili Yuan,Chengbin Liu
Developing carbon dioxide (CO 2 ) photocatalysts from transition metal carbides (TMCs) with abundant active sites, modulable electron cloud density, as well as low cost and high stability is of great significance for artificial photosynthesis. Building an efficient electron transfer channel between the photo-excitation site and the reaction-active site to extract and steer photo-induced electron flow is necessary but challenging for the highly selective conversion of CO 2 . In this study, we achieved an oxygen-bridged Schottky junction between ZnO and Ni 3 ZnC 0.7 (denoted as Zn oxide –O–Zn TMC ) through a ligand-vacancy strategy of MOF. The ZnO–Ni 3 ZnC 0.7 heterostructure integrates the photo-exciter (ZnO), high-speed electron transport channel (Zn oxide –O–Zn TMC ), and reaction-active species (Ni 3 ZnC 0.7 ), where Zn oxide –O–Zn TMC facilitates the transfer of excited electrons in ZnO to Ni 3 ZnC 0.7 . The Zn atoms in Ni 3 ZnC 0.7 serve as electron-rich active sites, regulating the CO 2 adsorption energy, promoting the transformation of *COOH to CO, and inhibiting H 2 production. The ZnO–Ni 3 ZnC 0.7 shows a high CO yield of 2674.80 μmol g –1 h –1 with a selectivity of 93.40 % and an apparent quantum yield of 18.30 % (λ = 420 nm) with triethanolamine as a sacrificial agent. The CO production rate remains at 96.40 % after 18 h. Notably, ZnO–Ni 3 ZnC 0.7 exhibits a high CO yield of 873.60 μmol g –1 h –1 with a selectivity of 90.20 % in seawater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Xiaobo Zhang,Zhiru Li,Yushu Shi,Bing Hu,Qiuyue Zheng,Yongzhe Piao,Liang Feng,Jijuan Cao
Aflatoxin B1 (AFB 1 ), a hepatotoxic and carcinogenic food contaminant, is commonly found in agricultural food. Herein, Au NPs anchored ZIF-8-derived porous carbon-ZnO (Au NPs/PC ZIF-8 -ZnO) was firstly synthesized to act as the sensing substrate. Then, a ratiometric electrochemical (EC) and “off–on” photoelectrochemical (PEC) dual-mode paper-based aptasensor was presented for AFB 1 detection based on a distance-modulation sensing strategy. The independent signal transduction mechanisms and output mode not only broaden the dynamic detection range but also provide a self-verification to assay results, improving the sensitivity and reliability. The wide detection ranges of 0.1 pg/mL-100 ng/mL (EC mode) and 0.02 pg/mL-100 ng/mL (PEC mode) were obtained using dual-mode aptasensor, with detection limits of 36.7 and 9.3 fg/mL, respectively. The fabricated aptasensor exhibited excellent selectivity, reproducibility and stability. Furthermore, it exhibited good practicability for AFB 1 assays in real samples, demonstrating great potential applications for food safety evaluation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jehangir Khan,Shah Alam,Teshale Ayano Begeno,Zhenxia Du
In recent years, the utilization of smart colorimetric packaging films for monitoring food freshness has garnered significant concentration. However, their limited tensile strength , hydrophobicity , antioxidant, and antibacterial properties have been substantial barriers to widespread adoption. In this study, we harnessed the potential of biodegradable materials, specifically chitosan/polyvinyl alcohol, alongside shikonin extracted from Radix Lithospermi and ZnO nanoparticles, to create a novel colorimetric sensing film. This film boasts an impressive tensile strength of 82.36 ± 2.13 MPa, enhanced hydrophobic characteristics (exemplified by a final contact angle of 99.81°), and outstanding antioxidant and antibacterial properties. It is designed for real-time monitoring of shrimp freshness. Additionally, we verified the effectiveness of this sensing film in detecting shrimp freshness across varying temperature conditions, namely 25 °C and 4 °C was validated through the measurement of total volatile basic nitrogen (TVB-N). Visual inspection unequivocally revealed a transition in color from dark red to purple-light blue and finally to dark bluish providing a clear indication of shrimp spoilage, which demonstrated a strong correlation with the TVB-N content in shrimp measured through standard laboratory procedures . The colorimetric sensing film developed in this study holds great promise for creating smart labels with exceptional antioxidant and antibacterial properties, tailored for visual freshness monitoring of shrimp.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Yuting Yan,Henan Li,Qian Liu,Nan Hao,Hanping Mao,Kun Wang
Improving inherent performance of photoactive materials and designing a novel detection strategy are crucial for achieving excellent photoelectrochemical (PEC) aptasensor. Herein, we present a facile thermal-treatment strategy for fabricating thiophene-sulfur-doped graphene/ZnO nanocomposite (t-SG/ZnO). In this nanoarchitecture, pure thiophene-sulfur-doped graphene (t-SG) acted as a novel enhanced carrier, which can effectively improve the visible light photoactivity and photostability of ZnO nanoplates by enhancing the interfacial charge transfer and decreasing the band gap of pure ZnO nanoplates. The as-prepared t-SG/ZnO nanocomposite exhibited higher photocurrent intensity, which was about 1.5 times and 2.6 times than that of nitrogen doped graphene/ZnO and graphene/ZnO, respectively. Furthermore, we have fabricated an “on-off-on” PEC aptasensing strategy for sensitive and selective determination of acetamiprid based on the outstanding PEC performance of t-SG/ZnO by using the aptamer technique as specific recognition. This PEC aptasensing strategy not only gives insights into using t-SG as a novel sensibilizer to improve the PEC nature of semiconductor but also offers a new PEC aptasensor platform for acetamiprid direct detection. This proposed method provides a promising flexible platform for pesticide detection.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Qi Li,Shengchao Yang,Yufan Huang,Yuwei Liang,Chunling Hu,Min Wang,Zhiyong Liu,Yanlong Tai,Jichang Liu,Yongsheng Li
The difficulty in fabricating a multifaceted composite heterojunction system based on Cd x Zn 1- x S limits the enhancement of photocatalytic performance. In the present scrutiny, novel ZnO/Cd x Zn 1- x S/CdS composite heterojunctions are successfully prepared by the alkaline dissolution etching method. The internal electric field at the interface of I-type and Z-scheme heterojunction improved the effective charge separation. The ZC 8 sample exhibits excellent photocatalytic performance and the H 2 production efficiency is 15.67 mmol g −1 h −1 with good stability up to 82.9 % in 24-hour cycles. The performance of CH 4 and CO capacity in the CO 2 RR process is 3.47 μmol g −1 h −1 and 23.5 μmol g −1 h −1 , respectively. The photogenerated accelerated charge transport is then examined in detail by in situ X-ray photoelectron spectroscopy (ISXPS) and density functional theory (DFT) calculations. This work presents a new idea for the synthesis of Cd x Zn 1- x S solid-solution-based materials and provides a solid reference for the detailed mechanism regarding the electric field at the heterojunction interface.
✓ 已验证
产品关联
DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2025
·
IF 5.5
Jinglin Zhang,Shuoyan Jiang,Huidi Liu,Zengxi Wang,Xiang Cai,Shaozao Tan
Medical stainless steel (SS) is a widely used alloy in orthopedic and dental implant applications. However, SS can cause local corrosion in the body, which may affect cell proliferation and differentiation, and is prone to related bacterial infection. Therefore, surface modification is required to improve the corrosion resistance and antibacterial performance of SS to extend its service life. To achieve this goal, a new type of composite coating was established on the surface of SS. First, zinc oxide (ZnO) nanoparticles were deposited on the surface of SS by electrochemical deposition. Then, polydopamine (PDA) was formed through the self-polymerization of dopamine. Finally, the Michael addition reaction between ε-polylysine (ε-PL) and PDA was used to chemically graft a cationic antimicrobial peptide (AMP), namely, ε-PL, constructing a corrosion-resistant and antibacterial ZnO/PDA/ε-PL coating on the surface of the SS (SZP/ε-PL). The results indicated that the obtained composite coating could significantly improve the corrosion resistance of SS because of the introduction of ZnO. After being irradiated with near-infrared (NIR) light (wavelength: 1064 nm, power: 1 W/cm2) for 8 min, the temperature of SZP/ε-PL increased from 22.4 to 57.8 °C. Moreover, there was no significant temperature decay after four cycles, which indicated the good photothermal performance and stability of SZP/ε-PL owing to the function of PDA. Combining photothermal sterilization and AMP contact sterilization, the antibacterial rates of SZP/ε-PL against Escherichia coli and Staphylococcus aureus both reached nearly 100%. In addition, SZP/ε-PL has excellent blood compatibility. With the above advantages, SZP/ε-PL was expected to become a safe and efficient implant material.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Ahmed Uddin,Muhammad Bilal,Jinchen Qian,Muhammad Akram,Qingquan He
This study presents a novel ZnO/Oxygen-doped g-C 3 N 4 (ZnO/OCN) nanocomposite photocatalyst for enhanced bisphenol A (BPA) degradation and CO 2 reduction. Synthesized via a facile air calcination-assisted hydrothermal method, the ZnO/OCN heterojunction exhibits significantly improved photocatalytic activity compared to individual ZnO and OCN under visible light irradiation. A remarkable 92.52% BPA degradation was achieved within 180 min using the ZnO/OCN (5%) composites. Additionally, the optimal composite yields CO and CH 4 production of 59.76 and 4.94 μmol⋅g −1 ⋅h −1 , respectively, approximately 6.64 and 2.5 times than those individual catalysts. This enhanced performance stems from the construction of a Z-scheme heterojunction, which facilitates efficient charge separation and transfer and minimizes electron-hole recombination, thereby boosting the overall photocatalytic performance. A Z-scheme mechanism mediated by oxygen vacancy was suggested for charge separation in the heterojunction. This mechanism involves the recombination of photoinduced electrons, trapped at the oxygen defect levels of ZnO, with holes in the valence band of OCN at the heterojunction interface. A comprehensive investigation, integrating radical trapping experiments and electron paramagnetic resonance (EPR) spectroscopy, confirms the critical role of lattice oxygen in the generation of O 2 − and OH. This highly efficient and sustainable photocatalytic system offers a promising solution for the simultaneous remediation of pollutants and mitigation of greenhouse gases.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Yaling Wang,Lingpeng Yan,Guoqi Ji,Cheng Wang,Huimin Gu,Qun Luo,Qi Chen,Liwei Chen,Yongzhen Yang,Chang-Qi Ma,Xuguang Liu
Zinc oxide (ZnO) is one of the most extensively used electron-transporting layers (ETLs) in organic solar cells. However, owing to numerous surface defects and mismatched energy bands with the photoactive layer, light-soaking process is usually required to achieve a high device performance for the ZnO-based cells. Herein, we reported the synthesis of N,S-doped carbon quantum dots (N,S-CQDs) by a simple hydrothermal treatment using ascorbic acid and ammonium persulfate as reagents. As characterized by high-resolution transmission electron microscopy and X-ray diffraction, the synthesized CQDs were found to be 2–7 nm in dimensions, having a graphite-structured core and amorphous carbon on the shell. Fourier transform infrared and X-ray photoelectron spectroscopy analyses confirmed that these CQDs are highly nitrogen- and sulfur-doped, which leads to efficient (with a quantum yield of 33%) downconversion and excitation-dependent photoluminescence character. Application of these N,S-CQDs as surface modifier for ZnO layer in inverted organic solar cells was investigated. Results indicate that the cells with N,S-CQDs-decorated ZnO ETL showed higher power conversion efficiency without S-shaped kink in the current density–voltage curves. The performance improvement and the elimination of light-soaking effect for ZnO:N,S-CQDs cells are attributed to the ZnO surface defect passivation by N,S-CQDs, as confirmed by fluorescence spectroscopy and scanning Kelvin probe microscopy. The cells with N,S-CQDs-modified ZnO ETL showed a high power conversion efficiency of 9.31%, which is higher than the reference ZnO cells. The current work provides a feasible way to achieve shell element-doped CQDs for specific application in organic electronic devices.
✓ 已验证
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2019
·
IF 4.959
Cong Zhang,Jujie Ren,Yifei Xing,Min Cui,Na Li,Peng Liu,Xiaofang Wen,Meng Li
In this work, PdNPs@ZnO-Co 3 O 4 was synthesized via the facile oxidation treatment of bimetallic ZnCo-zeolitic-imidazolate-framework (ZnCo-ZIF) followed by in situ chemical reduction of PdNPs on the surface of the nanocrystals. After combined with MWCNTs, the PdNPs@ZnO-Co 3 O 4 -MWCNTs nanocomposites were formed, which were then exploited as novel electrode materials to construct the non-enzyme electrochemical sensors for high-sensitivity detection of tanshinol. Due to the high catalytic activity of multi-metallic PdNPs@ZnO-Co 3 O 4 , and the excellent charge transfer property between imidazole groups of the ligands in MOFs and MWCNTs, the obtained sensor exhibited high sensitivity for tanshinol detection under optimum experimental conditions. The sensor shows two well linear relationship between the current and tanshinol concentration in the range of 0.002–0.69 mM (R 2 = 0.989) and 0.69–3.75 mM (R 2 = 0.994) with the corresponding sensitivity of 59.16 μA mM − 1 and 19.08 μA mM − 1 . And the limit of detection (LOD) was calculated to be 0.019 μM (S/N = 3). Furthermore, with the advantages of good repeatability, stability and selectivity, the fabricated sensor can be successfully applied to measurement of tanshinol in real medicinal liquids samples. Our results would accelerate the applications of MOFs in electrochemical field and provide insights into design of multifunctional non-enzyme sensing materials for various applications in biocatalysis, bioanalysis and drug testing.
✓ 已验证
DOI
高影响因子
Journal of Building Engineering
·
2023
·
IF 6.4
Liang Yi,Qian Yang,Long Yan,Ning Wang
To satisfy the fire requirement of wood structure buildings, waterborne transparent fire-retardant coatings with multi-function properties is necessary for practical application. A novel waterborne transparent fire-retardant coating was fabricated using organophosphate-grafted nano-ZnO as a multifunctional flame retardant. Adding ZnO nanoparticles greatly strengthens the mechanical property, smoke suppression property and fire protection performance of the coatings for wood substrates while keeping high transparency. Particularly, when the mass ratio of phosphate ester to nano-ZnO is 95:5, the resulting MZPPB3 sample shows the lowest smoke density rating value of 2.1% and flame spread rate value of 7.2% among the samples, concomitant with a high transparency of 84.5%. Besides, the uniform distribution of ZnO nanoparticles has a super shielding effect on reducing ageing degradation of the coating structure , thus endowing excellent durable fire protection performances to the coating sample. Furthermore, nano-ZnO has an excellent inhibiting effect on E. coli and S. aureus colonies in the coating, and the antimicrobial activity indexes against E. coli and S. aureus of MZPPB3 coating reach 96.5% and 99.3%, respectively.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）