Materials Science & Engineering C-Materials for Biological Applications
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2019
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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.
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高影响因子
ACS Biomaterials Science & Engineering
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2025
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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.
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2015
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IF 6.723
Aifeng Hu,Qingxia Wang,Lie Chen,Xiaotian Hu,Yong Zhang,Yinfu Wu,Yiwang Chen
A novel electron transport layer (ETL) based on zinc oxide@graphene:ethyl cellulose (ZnO@G:EC) nanocomposite is prepared by in situ formation of zinc oxide (ZnO) nanocrystals in a graphene matrix to improve the performance of polymer solar cells. Liquid ultrasound exfoliation by ethyl cellulose as stabilizer not only allows for uniform dispersion of graphene solution but also maintains an original structure of graphene gaining a high conductivity. The ZnO@G:EC ETL displays a quite smooth morphology and develops the energy-level alignment for the electron extraction and transportation. Subsequently, the device based on poly(3-hexylthiophene) (P3HT):(6,6)-phenyl-C61 butyric acid methyl ester (PC61BM) with the ZnO@G:EC as ETL obtains a power conversion efficiency (PCE) of 3.9%, exhibiting a ∼20% improvement compared to the familiar device with bare ZnO nanocrystals as ETL. Replacing the active layer with polythieno[3,4-b]thiophene/benzodithiophene (PTB7): (6,6)-phenyl-C71 butyric acid methyl ester (PC71BM), the PCE can be dramatically improved to 8.4%. This facile and fascinating method to produce a smooth and highly conductive electron transport layer provides an anticipated approach to obtain high performance polymer solar cells.
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高影响因子
SURFACE & COATINGS TECHNOLOGY
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2026
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IF 6.9
Hui Guo,Yinzhong Liu,Yun Guo,Lingchao Wang,Xiaofan Li,Xiaotao Zhu,Yiyu Qiao,Yuqing Tian,Xuechun Yang
Eu/Er co-doped MOF-ZnO sensor enables room-temperature n-butanol detection. • 13.88-fold enhancement over ZnO (555/40) and LOD 862.6 ppb • Response/recovery: 33/27 s; good selectivity & stability • DFT: oxygen vacancies, surface area, band structure, adsorption energy The rapid advancement of industrialization has led to the emission of a growing number of volatile organic compounds (VOCs) into the atmosphere, posing significant threats to human health and the environment. Among these, n-butanol is recognized as a particularly harmful VOC. Herein, we propose a MOF-ZnO-based gas sensor for n-butanol doped with rare earth elements (Eu, Er), synthesized via a homogeneous co-precipitation method. The as-prepared samples were comprehensively characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) analysis, and ultraviolet-visible (UV–vis) spectroscopy to evaluate their morphological, structural, and physicochemical properties. Compared with the pure MOF-ZnO and the doped MOF-ZnO individually with 0.08 wt% Eu and 0.06 wt% Er, respectively, the co-doped MOF-ZnO with 0.04 wt% Eu 0.03 wt% Er presented the highest oxygen vacancy concentration and the largest specific surface area, as well as the optimal response, selectivity, and long-term stability toward n-butanol. Notably, at room temperature, the co-doped ZnO sensor achieved the highest response value of 555 toward 100 ppm n-butanol, representing a 13.88-fold enhancement over pure MOF-ZnO (40), with a limit of detection (LOD) as low as 862.6 ppb. The sensor also displayed fast response and recovery times of 33 s and 27 s, respectively, for n-butanol detection. Furthermore, the modified energy band structure and surface adsorption energy (E ads ) of the doped product were investigated via Density Functional Theory (DFT) mechanistic calculations. These findings offer a versatile and highly promising strategy for constructing high-performance VOC sensors.
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高影响因子
Journal of Building Engineering
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2023
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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.
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高影响因子
JOURNAL OF POWER SOURCES
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2013
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IF 4.675
Xin-Hong Lu,Yan-Zhen Zheng,Shi-Qing Bi,Jia-Xing Zhao,Xia Tao,Jian-Feng Chen
An internal layer consisting of three-dimensional (3D) shuttlelike up-converting erbium-doped yttrium oxide (Y 2 O 3 :Er 3+ ) and ZnO nanocrystalline aggregates is fabricated and implemented in photoanodes of dye-sensitized solar cells (DSCs). Such a hybrid photoanode film not only broadens the light-absorbing range to near-infrared region by incorporation of up-converting material but also generates significant light scattering arising from both the micron-sized shuttlelike Y 2 O 3 :Er 3+ and submicron-sized ZnO aggregates as confirmed by the optical characterizations. Owing to the synergic improvement of light harvesting, the overall photo-to-current conversion efficiency (PCE) of ZnO-DSC is significantly improved from 4.08% to 5.63% with an optimized doping amount of 11% Y 2 O 3 :Er 3+ in the internal layer. Further, a competitive PCE of 6.26% is also achieved for a tiny-sized device with 11% Y 2 O 3 :Er 3+ , suggesting the substantial potential of 3D up-converting material in improving DSC performance.
研究领域:
光伏学
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材料科学
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纳米技术
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可再生能源
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Yuying Yang,Mengmeng Sun,Zhuoyuan Chen,Hengyue Xu,Xiaohui Wang,Jizhou Duan,Baorong Hou
Solar energy-driven photoinduced cathodic protection (PICP) technology utilizes solar energy to protect marine metallic structures against severe marine corrosion. To enhance the solar energy utilization and strengthen dark-state application for realizing long-term protection, herein, a 3D nanothorn cluster-like WO 3 /ZnO/Zn-Bi 2 S 3 multijunction with electron-storage characteristic and adjustable energy band was constructed. It exhibited an enhanced continuous release of photogenerated electron and sustained cathodic protection in dark conditions. Exposed to only 100 s of simulated sunlight irradiation, the WO 3 /ZnO/Zn-Bi 2 S 3 could store 5.27×10 −2 C electrons and provide up to 5460 s of sustained CP for the coupled metal after light stops, which was 10.8 and 3.5 times higher than those of WO 3 /ZnO (4.89×10 −3 C) and WO 3 /Zn-Bi 2 S 3 (1.51×10 −2 C), respectively. The WO 3 nanothorn cluster-like substrate with reversible valence transformation of W 6+ /W 5+ together with the large surface area and one-dimensional transmission path can store photogenerated electrons under illumination and release photogenerated electrons after light stops efficiently. Notably, the tri-phase heterojunction with introduction of intermediate “Carrier Springboard” ZnO between WO 3 and Zn-Bi 2 S 3 contributed to the building of well-matched energy band gradient to strengthen the directional backward transfer of photogenerated electrons and holes. The energy band of Bi 2 S 3 sensitizer was adjusted towards negative direction by doping with zinc element to boost PICP application performance. The reversible valence transformation of Bi 3+ /Bi 5+ could promote the consumption of photogenerated holes. These synergistically enhanced the sustained PICP performance of the WO 3 /ZnO/Zn-Bi 2 S 3 photoelectrode both in dark and light conditions. This design shed light on energy-storage photoelectrodes for long-term PICP of metallic materials.
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高影响因子
Materials Today Communications
·
2022
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IF 3.662
Junyue Shan,Xianliang Wu,Caifang Li,Jiwei Hu,Zhenming Zhang,Huijuan Liu,Pinhua Xia,Xianfei Huang
In recent years, semiconductor materials have shown excellent potential in the field of photocatalytic degradation of antibiotics. To prepare a photocatalyst with excellent performance, an Fe 3 O 4 /rGO/Co-doped ZnO/g-C 3 N 4 tetrameric hybrid photocatalyst was successfully prepared for the first time by means of chemical precipitation using graphene oxide as the precursor. The developed quaternary photocatalyst was used for the degradation of oxytetracycline hydrochloride (OTC), and its photocatalytic activity was investigated. The structure and morphology of the composites were characterized by XRD , SEM, HR-TEM, ESR, N 2 adsorption, PL spectroscopy and UV-Vis DRS . The effects of different parameters on the degradation process were studied by the response surface method and artificial intelligence. The results showed that Fe 3 O 4 /rGO/Co-doped ZnO/g-C 3 N 4 was successfully synthesized. Under optimal conditions, the degradation rate of OTC was approximately 82% (the Fe 3 O 4 /rGO/Co-doped ZnO/g-C 3 N 4 dose was 0.16 g, the pH was 7.0, the initial concentration of OTC was 30 mg/L, and the visible light irradiation time was 70 min). pH is the most influential variable for OTC removal. At the same time, the degradation rate of OTC remained above 50% after 5 times of recycling, indicating that Fe 3 O 4 /rGO/Co-doped ZnO/g-C 3 N 4 photocatalyst had good stability and recoverability. In addition, the results of ESR and radical trapping experiments showed that·O 2 - and·OH were the main active species in the OTC removal process.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
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IF 10.53
Ao Sun,Yingqing Zhan,Qingying Feng,Wei Yang,Hongyu Dong,Yucheng Liu,Ximin Chen,Yiwen Chen
The two dimensional MXene nanosheets lamellar membranes have emerged as the promising candidates for oil/water separation. However, to deal with the large-scale discharge of complicated oily wastewater (including oils, organics, microorganism, etc), developing advanced membrane materials with high permeate flux and enhanced antifouling is still big challenge. Herein, the MXene/ZnO heterojunction was prepared by electrostatic attraction, which was modified by tannic acid (TA) and further self-assembled onto the poly (arylene ether nitrile) (PEN) fibrous mat to construct the multi-functional separation membrane (ZnO/M-TA@PEN fibrous composite membrane). In the hierarchical functional layer, the improved hydrophilicity of TA and the hierarchical micro-/nano-roughness build by ZnO NPs contributed to the super-hydrophilic/underwater super-oleophobic feature (WCA = 0°, UOCA>152°), leading to high separation efficiency and ultra-low oil adhesion. Uniquely, the decoration of ZnO NPs achieved the “intercalation effect” and effectively tuned the interlayer spacing between MXene nanosheets, which conquered the stacking problem of MXene nanosheets lamellar membrane and greatly enhanced the permeation flux of membrane. For separating various oil emulsions, the resulting ZnO/M-TA@PEN fibrous composite membrane displayed superior emulsion separation flux (1815.34 ± 44.73–2053.35 ± 42.62 L/m 2 ·h) and separation efficiency (>99.4%), even in high-temperature and salty environments. More importantly, the heterojunction structure of MXene/ZnO hybrid endowed the fibrous composite membrane with enhanced antibacterial ability and photocatalytic self-cleaning performance toward the degradation of methylene blue, which realized the synergetic antifouling and favorable cycling ability of the fibrous composite membrane. This combination of anti-fouling and high permeability renders the membrane as attractive candidate for dealing with the oily wastewater containing multicomponent pollutants.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
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IF 19.503
Hengli Qian,Guanjie Yu,Qidong Hou,Yifan Nie,Chuanyunlong Bai,Xinyu Bai,Haozhi Wang,Meiting Ju
To achieve efficient degradation of pharmaceutical and personal care products (PPCPs), dual reaction centers [email protected] photo-Fenton catalysts with high-speed electron transmission channel were designed through surface hydroxyl-induced assembly. In [email protected] catalytic system, the photocatalysis center of ZnO and Fenton catalytic center of FePc were formed simultaneously. Concept and process for the control of hydroxyl groups to construct a dual reaction center [email protected] photo-Fenton catalyst were verified ingeniously based on the density functional theory (DFT) analysis and experimental results. A series of catalysts, including ZIF-8 (400 ℃-N 2 ), FePc (400 ℃-N 2 ), ZIF-8 (400 ℃)-FePc (400 ℃) and [email protected] were prepared and characterized by XRD, FTIR, TEM, BET, XPS, PL and DRS, respectively. The [email protected] catalyst showed superior performance for the photo-Fenton degradation of ibuprofen, affording degradation rate larger than 90 % within just 10 min under simulateed sunlight. The excellent performance of [email protected] catalyst is mainly attributed to the synergistic effect between dual reaction centers of [email protected] This work provides a novel method to construct dual reaction centers [email protected] catalyst with efficient photo-generated electrons transmission link and to strengthen the synergistic effect of dual reaction centers.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2020
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IF 5.977
Qiwen Wang,Haipei Si,Lihui Zhang,Ling Li,Xiaohong Wang,Shengtian Wang
A novel electrochemical sensor based on ZrO 2 and ZnO hybrid nanocomposites was developed for simultaneous determination of epinephrine (EA), uric acid (UA) and folic acid (FA) with the highly selective and ultrasensitive. The nanocomposites have been synthesized by chemical precipitation and thermal calcine method with economical, eco-friendly and practical nature. Their structure and electrochemical properties were investigated by X-ray diffraction (XRD), X-ray photo electron spectroscopy (XPS), scanning electron microscopy (SEM) and electrochemical techniques. The results reveal that the ZrO 2 /ZnO nanocomposites can possesses highly exposed catalytic sites, favorable conductivity, and the sensor excellent signal response for EP, UA and FA under the optimal condition. The electrochemical sensing platform has a low detection limit of 0.039 μM, 0.29 μM and 0.037 μM and a wide detection range of 0.8–420 μM, 10–2400 μM and 2–480 μM, respectively. It was also tested with a human blood serum sample at physiological pH with recovery 97.3–103.8% and relation standard deviation less than 5%. It indicates that the electrochemical sensors has a hopeful capacity of extensive applications in bioanalysis and diseases diagnosis.
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DOI
PubMed
高影响因子
Chemistry Africa-A Journal of the Tunisian Chemical Society
·
2023
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IF 2.6
Arukalam Innocent O.,Uzochukwu Ikechukwu N.,Tüzün Burak,Dagdag O.,Oguzie Emeka E.
Ethylhexanoic acid-modified PDMS-ZnO nanocoatings containing varying dimensions of ZnO nanoparticles (30, 50 and 90 nm) were prepared. The main objective was to appraise the effect of varying dimensions of ZnO nanoparticles on the protective efficacy of ethylhexanoic acid-modified PDMS coating in aqueous solution of 3.5 wt% NaCl/ Pseudomonas aeruginosa . Barrier properties and anti-corrosion performance of the coatings were evaluated by electrochemical impedance spectroscopy (EIS). Computational simulation techniques [quantum chemical computation (QCC) via density functional theory (DFT) and molecular dynamics (MD) simulation] were employed to provide molecular/atomistic level information on the chemical molecules responsible for corrosion protection performance and their adsorption phenomena. EIS results showed that the coating containing 30 nm ZnO nanoparticles maintained high impedance values in the order of 10 9 magnitude throughout the immersion periods. The obtained results were validated by wettability, scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy results. The DFT calculations showed that PDMS and ethylhexanoic acid with energy gaps of 5.123 and 5.337 eV, respectively, are most responsible for the corrosion protection effect. The good adsorption of the coating containing 30 nm ZnO particles was validated by MD simulation result with adsorption energies (E ads ) of − 2.28 kcal/mol, suggesting it is most susceptible for hydrophilic interaction.
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高影响因子
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