Catalysis Science & Technology
·
2025
·
IF 4.2
Yuangong Ma,Youlin Huang,Wensheng Zhang,Zhishan Liang,Bo Ding,Dongfang Han,Dongxue Han,Li Niu
In the domain of photocatalysis, harnessing solar energy, particularly the near-infrared (NIR) spectrum, presents formidable challenges. To overcome these, a novel NIR-responsive photocatalyst, denoted as NYT@ZnO@RGO@Ag, was meticulously crafted. This photocatalyst comprises a NaYF4: Yb3+, Tm3+@ZnO structure supported on reduced graphene oxide (RGO) and further composited with silver nanoparticles. It was rigorously evaluated for its performance in photodegrading tetracycline (TC) antibiotics as a model compound. Leveraging the unique properties of upconversion materials, wide bandgap semiconductors, and localized surface plasmon resonance (LSPR), the NYT@ZnO@RGO@Ag catalyst exhibited an impressive photodegradation rate of 93.6% for TC under NIR light exposure. This efficiency surpassed that of NYT@ZnO (38.2%) and NYT@ZnO@RGO (72.3%). The remarkable enhancement in NIR-driven photocatalysis observed in NYT@ZnO@RGO@Ag is primarily attributed to the efficient process of fluorescence resonance energy transfer (FRET) from NYT to its each component. This process enhances photo-induced carrier generation and facilitates efficient transfer and energy utilization under NIR irradiation. The present study offers a promising approach for NIR-driven photocatalytic degradation of pollutants in environments with limited light exposure or even under dark conditions.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 165
·期 14
·H962
·
IF 3.662
Yuanzhen Zhou,Chentao Hao,Yuan Dang,Shuangli Chen
Rare earth Ce-doped ZnO nanorods were successfully synthesized via the hydrothermal method. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) results indicated that Ce ions were successfully doped into ZnO lattice and resulted in smaller nanorods and larger crystallite size, which was advantageous for the improvement of electrocatalytic performance. A highly sensitive and selective sensor for the determination of bisphenol A (BPA) has been strategically designed based on the Ce-doped ZnO nanorods. Furthermore, the electrochemical performances of the Ce-doped ZnO modified CPE (Ce-doped ZnO/CPE) are studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV) and the electrochemical responses are significantly improved. The oxidation peak currents of BPA are in good linear relationship to its concentrations in the ranges of 0.5∼3.2 μM and 3.2∼62.0 μM and the detection limit for BPA is 0.018 μM, indicating that the modified electrode has good electrocatalytic effect for BPA. Therefore, this novelly proposed sensor might have great potential value in the determination of the environmental hormone pollutants and could be extended to biomedical field, chemical engineering and food industry in the near future.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2020
·Vol. 22
·期 1
·105
·
IF 4.556
Wanting Li,Zixuan Huang,Rui Cai,Wan Yang,Huawei He,Yejing Wang
Silver-based hybrid nanomaterials are receiving increasing attention as potential alternatives for traditional antimicrobial agents. Here, we proposed a simple and eco-friendly strategy to efficiently assemble zinc oxide nanoparticles (ZnO) and silver nanoparticles (AgNPs) on sericin-agarose composite film to impart superior antimicrobial activity. Based on a layer-by-layer self-assembly strategy, AgNPs and ZnO were immobilized on sericin-agarose films using the adhesion property of polydopamine. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray powder diffraction spectroscopy were used to show the morphology of AgNPs and ZnO on the surface of the composite film and analyze the composition and structure of AgNPs and ZnO, respectively. Water contact angle, swelling ratio, and mechanical property were determined to characterize the hydrophilicity, water absorption ability, and mechanical properties of the composite films. In addition, the antibacterial activity of the composite film was evaluated against Gram-positive and Gram-negative bacteria. The results showed that the composite film not only has desirable hydrophilicity, high water absorption ability, and favorable mechanical properties but also exhibits excellent antimicrobial activity against both Gram-positive and Gram-negative bacteria. It has shown great potential as a novel antimicrobial biomaterial for wound dressing, artificial skin, and tissue engineering.Keywords:sericin;AgNPs;ZnO;antimicrobial activity;green synthesis
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2014
·
IF 4.331
Jun Hou,Lingzhan Miao,Chao Wang,Peifang Wang,Yanhui Ao,Jin Qian,Shanshan Dai
The presence of ZnO NPs in waste streams can negatively affect the efficiency of biological nutrient removal from wastewater. However, details of the toxic effects of ZnO NPs on microbial activities of wastewater biofilms have not yet been reported. In this study, the temporal and spatial inhibitory effects of ZnO NPs on the O 2 respiration activities of aerobic wastewater biofilms were investigated using an O 2 microelectrode. The resulting time–course microelectrode measurements demonstrated that ZnO NPs inhibited O 2 respiration within 2 h. The spatial distributions of net specific O 2 respiration were determined in biofilms with and without treatment of 5 or 50 mg/L ZnO NPs. The results showed that 50 mg/L of nano-ZnO inhibited the microbial activities only in the outer layer (∼200 μm) of the biofilms, and bacteria present in the deeper parts of the biofilms became even more active. Scanning electron microscopy (SEM) analysis showed that the ZnO NPs were adsorbed onto the biofilm, but these NPs had no adverse effects on the cell membrane integrity of the biofilms. It was found that the inhibition of O 2 respiration induced by higher concentrations of ZnO NPs (50 mg/L) was mainly due to the release of zinc ions by dissolution of the ZnO NPs.
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Zhili Zhang,Tao Liu,Yang Huang,Jidong Jiang,Ting Wang,Minghui Zhang,Xinglong Zhu,Yiqing Wang
A point-of-care testing device was proposed for the ultrasensitive detection of NT-proBNP. • A ZnO nanoflower-decorated field-effect transistor was constructed to amplify the signal response. • The POCT device demonstrated high selectivity for NT-proBNP with detection limit of 3.3 fg/mL. • This work provides a robust platform for early warning of AMI in emergency settings. N-terminal pro-B-type natriuretic peptide (NT-proBNP) is an established circulating biomarker of myocardial wall stress and cardiac dysfunction and is widely used in the clinical assessment of heart failure (HF). Its circulating concentration provides important information for HF diagnosis or exclusion, risk stratification, and prognostic evaluation. Because HF can arise from different cardiovascular conditions, including ischemic myocardial injury after acute myocardial infarction (AMI), rapid and reliable NT-proBNP measurement is also valuable for evaluating cardiac dysfunction and subsequent cardiovascular risk in acute cardiovascular settings. In this work, we developed a point-of-care testing (POCT) device based on a ZnO nanoflower-modified field-effect transistor (FET) for NT-proBNP biosensing. The three-dimensional ZnO nanoflower architecture offers a high specific surface area and abundant active sites for bioreceptor immobilization, while its micro-nano hierarchical structure enhances local electric-field modulation and signal transduction. By integrating a target-induced strand-release strategy, the POCT device exhibits a linear response over the concentration range of 0.01–10000 pg/mL, achieving a detection limit of 3.3 fg/mL and an optimized detection time of 20 min. Furthermore, by incorporating a capillary-driven microfluidic system that enables sequential sample delivery and washing, the proposed POCT device provides reliable NT-proBNP detection in serum samples. This POCT platform provides a portable strategy for rapid NT-proBNP measurement and shows potential for HF assessment, cardiovascular risk stratification, and disease monitoring, including the evaluation of cardiac dysfunction in patients following AMI. Download: Download high-res image (196KB) Download: Download full-size image A POCT device based on ZnO nanoflower-modified FET enables ultrasensitive determination of NT-proBNP within 30 min.
✓ 已验证
DOI
高影响因子
Sensor Letters
·
2016
·Vol. 14
·期 11
·1067-1073
·
IF 0
Wu Wenwen,Wang Sui
In this work, we reported a luminol electrochemiluminescence (ECL) sensor using a composite material compounded by ZnO nanoparticles and reduced graphene oxide (ZnO/RGO) as electrode membrane and in situ generated hydrogen peroxide as coreactant. The composite material was characterized
by fourier transform infrared spectroscopy analysis (FTIR) and X-Ray powder diffraction (XRD). Then this ZnO/RGO modified electrode was used to determine tetracaine hydrochloride (TA· HCl). Results show that the inhibition of ECL intensity increased with logarithm of TA · HCl
concentration within a linear range from 10–4
μg/mL to 10–2
μg/mL and the detection limit (S/N) was 3.3 × 10–5
μg/mL. In addition, the recoveries of real samples were 85.0%–104.0% (urine),
95.0%–127.4% (serum) and 87.0%–104.6% (raw material drug) respectively, demonstrating an acceptable reproducibility of this method.
✓ 已验证
DOI
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yue Liu,Huan Yao,Liang Wu,Zhi-Hui Xie,Chuan-Jian Zhong
Using nanomaterials to design and prepare photoanodes could enhance photoelectrochemical and photocathodic protection (PCP) performances. However, little is known about how the detailed nanostructure correlates with performance. Here, we report a morphologically tunable nano-ZnO semiconductor grown on a TiO 2 nanotube array (ZnO/TiO 2 ) for the PCP of nickel-coated magnesium alloy by manipulating the hydrothermal reaction temperature. While irregular ZnO nanosheet clusters were observed at relatively low and high temperatures, a smooth array of nanorods with a hexagonal cross-section structure was obtained at a moderate reaction temperature. Such nanostructure exhibited the optimum photoelectrochemical and PCP capacities, showing the highest photogenerated current density, which is 4.2 times higher than the single-component TiO 2 photoanode. The apparent enhancement in the performance of the ZnO/TiO 2 composite was related to the morphological regulation of the nano-ZnO and the formation of staggered gap heterojunction between ZnO and TiO 2 . This assessment is supported by the results from several characterizations, including a high-resolution transmission electron microscope , Mott-Schottky, and valence band X-ray photoelectron spectroscopy. These findings give a new insight into the relationship between the structure and photoelectrochemical performances of nano-ZnO, which has significant implications for designing and preparing high-efficiency photoanode in photocatalysis and corrosion protection .
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 50
·505704
·
IF 3.5
Yuhang Chen,Qi Xue,Weiguo Luo,Yu Sun,Ming Li,Tao Hang
Zinc oxide quantum dots (ZnO QDs) have gained wide attention due to their wide excitation spectrum, large Stokes shift, adjustable photoluminescence (PL) spectrum, and excellent biocompatibility. However, low fluorescence intensity and poor stability restrict their further applications. In this work, zinc sulfide (ZnS) as a surface modifier, ZnO/ZnS core–shell QDs with type-I core–shell structure and particle size of 5 nm were prepared via sol–gel method. Transmission electron microscope characterization demonstrates the core–shell structure and spherical morphology of the as-synthesized ZnO/ZnS QDs. The PL spectra show that ultraviolet fluorescence has been greatly enhanced. The maximum fluorescence intensity of ZnO/ZnS core–shell QDs increases by 5288.6% compared with that of bare ZnO QDs. The PL quantum yield increases from 9.53% to 30.95%. After being stored for three weeks, the fluorescence performance can be well retained. Furthermore, the cytotoxicity tests confirm the excellent biocompatibility of ZnO/ZnS core–shell QDs, demonstrating they are good candidates for cell imaging.
✓ 已验证
DOI
PubMed
高影响因子
Micromachines
·
2021
·Vol. 12
·期 8
·977
·
IF 2.891
Qi Mao,Weixuan Jing,Weizhuo Gao,Zhengying Wei,Bian Tian,Ming Liu,Wei Ren,Zhuangde Jiang
A novel and efficient enzymatic glucose sensor was fabricated based on Fe3O4magnetic nanoparticles (Fe3O4MNPs)-modified urchin-like ZnO nanoflowers (ZnONFs). ZnONFs were hydrothermally synthesizing on a flexible PET substrate. Fe3O4MNPs were deposited on the surface of the ZnONFs by the drop-coating process. The results showed that the urchin-like ZnONFs provided strong support for enzyme adsorption. For Fe3O4MNPs, it significantly promoted the redox electron transfer from the active center of GOx to the ZnO nanoflowers beneath. More importantly, it promoted the hydrolysis of H2O2, the intermediate product of glucose catalytic reaction, and thus improved the electron yield. The sensitivity of the Nafion/GOx/Fe3O4MNPs/ZnONFs/Au/PET sensor was up to 4.52 μA·mM−1·cm−2, which was improved by 7.93 times more than the Nafion/GOx/ZnONFs/Au/PET sensors (0.57 μA·mM−1·cm−2). The detection limit and linear range were also improved. Additionally, the as-fabricated glucose sensors show strong anti-interference performance in the test environment containing organic compounds (such as urea, uric acid, and ascorbic acid) and inorganic salt (for instance, NaCl and KCl). The glucose sensor’s service life was evaluated, and it can still maintain about 80% detection performance when it was reused about 20 times. Compared with other existing sensors, the as-fabricated glucose sensor exhibits an ultrahigh sensitivity and wide detection range. In addition, the introduction of Fe3O4MNPs optimized the catalytic efficiency from the perspective of the reaction mechanism and provided potential ideas for improving the performance of other enzymatic biosensors.Keywords:enzymatic glucose sensor;Fe3O4magnetic nanoparticles;ZnO nanoflowers;enzyme;electrochemical sensor
✓ 已验证
DOI
PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2015
·Vol. 17
·期 26
·17041-17052
·
IF 4.493
Xiangyang Liu,Xiuying Cheng,Shun Wang,Kun Zhang,Yuzong Gu
ZnO films with several microstructures including nanoparticles, nanowire arrays, nanorod arrays and nanotube arrays were prepared using different methods. In2O3 and/or Cu4Bi4S9 were deposited onto each nanostructured ZnO film, and two types of heterostructures (ZnO/Cu4Bi4S9 and ZnO/In2O3/Cu4Bi4S9) as well as solid state dye-sensitized solar cells were fabricated. The signals of steady state and electric field-induced surface photovoltage spectroscopy indicate that all of ZnO/In2O3/Cu4Bi4S9 heterostructures exhibit higher photovoltaic response than the relative ZnO/Cu4Bi4S9. The same type of heterostructure with different ZnO films presents various photovoltaic properties. Transient surface photovoltage spectroscopy can contribute to study the separation and transport mechanism of photogenerated charges. Here, ZnO nanotubes/Cu4Bi4S9 and ZnO nanotubes/In2O3/Cu4Bi4S9 cells exhibit the best performances with the highest efficiencies of 6.2% and 6.8%, respectively. The internal relations of photoelectric properties to some factors, such as film thickness, surface area, microstructure, double energy level matchings, etc. were discussed in detail. Qualitative and quantitative analysis further verified the comprehensive effect and the difference of factors. The exploration to understand the transport mechanism of light-induced charges in composite films will promote the nanocrystal application in solid state solar cells and photovoltaic community.
✓ 已验证
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 14
·4953-4961
·
IF 6.119
Junyue Li,Ziyi Wang,Huayu Chen,Qiqi Zhang,Huilin Hu,Lequan Liu,Jinhua Ye,Defa Wang
Photocatalytic reduction of carbon dioxide (CO2) into hydrocarbon fuels has attracted increasing research attention in recent years. However, the fast recombination of photoinduced charge carriers and poor adsorption/activation capability of CO2 molecules limit the photoconversion efficiency. Herein, we report on loading a two-dimensional (2D) titanium carbide (Ti3C2) MXene as a noble-metal-free cocatalyst onto zinc oxide (ZnO) via a facile electrostatic self-assembly method for efficient CO2 photoreduction. It is interesting to find that the ZnO loaded with 7.5 wt% of surface-alkalinized Ti3C2 exhibited remarkably improved evolution rates of CO (30.30 μmol g−1 h−1) and CH4 (20.33 μmol g−1 h−1), which were approximately 7-fold and 35-fold those of bare ZnO, respectively. The surface-alkalinized Ti3C2 MXene is believed to play a crucial role in improving the separation/transfer of photoinduced charge carriers and the adsorption/activation of CO2 molecules, accounting for the superior photocatalytic activity of CO2 reduction. Our work demonstrates that the Ti3C2 MXene could be employed as a noble-metal-free cocatalyst for efficient photocatalytic CO2 reduction.
✓ 已验证
DOI
高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2021
·Vol. 94
·期 8
·1066-1071
·
IF 0.85
Vorobyova E. V.
Abstract The effect of fillers, metal oxide nanoparticles (Fe 3 O 4 , ZnO), on the thermal oxidation resistance of polyethylene inhibited by the phenolic antioxidant Irganox 1010 was studied. The distribution of nanoparticles in the polymer matrix was carried out by ultrasound, and the samples were formed by thermal pressing. Thermal oxidation resistance was determined by the duration of the induction oxidation period of film samples. It is shown that the pressure of the press during the formation of the material has a significant effect on the thermal oxidation resistance of the inhibited composite, both filled with nanoparticles of Fe 3 O 4 , ZnO, and unfilled. The nature of the effect of the concentration of the nanofiller on the thermal oxidation resistance of the samples depends on the metal oxide used. An increase in the concentration of the filler Fe 3 O 4 leads to a decrease in the thermal oxidation resistance of the polymer; when using ZnO, this dependence is inverse. The oxidation of the prepared nanocomposite film samples formed under high pressure conditions revealed synergistic effects of nanofillers and antioxidants.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）