CARBOHYDRATE POLYMERS
·
2012
·
IF 3.628
Tong Chen,Tong Zhao,Dongfeng Wei,Yanxia Wei,Yuanyuan Li,Haixia Zhang
Core–shell structured multifunctional nanocarriers (NCs) of ZnO quantum dots-conjugated gold nanoparticles (Au NPs) as core and amphiphilic hyperbranched block copolymer as shell were synthesized for targeted anticancer drug delivery. The amphiphilic hyperbranched block copolymer contained poly( l -lactide) (PLA) inner arm and folate (FA)-conjugated a sulfated polysaccharide from Gynostemma pentaphyllum Makino (GPPS-FA) outer arm. The structure and properties of core–shell structured multifunctional nanocarriers were characterized and determined by UV–visible spectra, FT-IR spectra, X-ray diffraction (XRD), fluorescence spectroscopy and TEM analyses. The release results indicated that camptothecin (CPT) release from NCs at pH 7.4 was much greater than that at pH 5.3. The cytotoxicity studies showed that both the blank NCs and the CPT-loaded NCs provided high anticancer activity against Hela cells. Furthermore, nanocarriers gained specificity to target model cancer cells in this study due to the enhanced cell uptake mediated by FA moiety. The results indicated that the NCs not only had great potential as tumor-targeted drug delivery nanocarrier, but also had an assistant role in the treatment of cancer.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 8
·10734-10749
·
IF 2.478
Kabir Fazal,Murtaza Adil,Saeed Azhar,Ghani Awais,Ali Anwar,Khan Saleh,Kaili Li,Qizhong Zhao,Kang Yao Kang,Yang Sen
Room temperature ferromagnetism with the doping of magnetic ions in the semiconducting host is the fundamental criterion for the potential use of spintronics material. In the present study, pure and (Fe, Tb) co-doped ZnO nanoparticles were well-prepared via the co-precipitation method, and corresponding microstructural, magnetic, and optical properties were investigated. The formation of Wurtzite hexagonal crystal structure of pure and doped ZnO was confirmed by X-ray diffraction (XRD) studies. No secondary phase was detected in all samples. Microstructural analysis reveals the spherical morphology of synthesized particles with the average size in the nanometer range. Fourier transforms infrared spectra show Tb–Zn–O stretching at 550 cm −1 . Optical absorption spectra show that the bandgap decreases and the absorption band slightly shift toward the visible region with increasing Tb doping, which may be due to the transfer of charge between the Tb ion 4f level and ZnO valance band. The photoluminescence (PL) spectrum exhibits a strong emission in the visible range, and PL emission intensity decreases with increasing Tb concentration and is anticipated to be due to the low recombination rate of electron–hole pairs. Most importantly, the room temperature ferromagnetism (RTFM) was observed in the doped ZnO nanoparticles, ascribed to the bound magnetic polaron (BMP) mechanism. The optical and magnetic outcome demonstrates that prepared (Fe, Tb) co-doped ZnO based dilute magnetic semiconducting (DMS) material are potential candidates for spintronics applications.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Changlin Li,Shangrong Chen,Yanfang Wang,Zhongyu Hou
ZnO nanorod arrays (NRAs) grown on the Zn foil substrate in the dual alkaline solution by hydrothermal method were first successfully utilized for photoelectrochemical (PEC) water splitting. ZnO NRAs were sufficiently covered on the Zn foil substrate via the reasonable match of the pH value, reaction temperature and reaction time through intensive experimental works. To enhance PEC performance, ZnS was coated on the surfaces of ZnO NRAs by ion exchange. The morphological, structural, optical and PEC characteristics of as-grown ZnO NRAs and ZnO/ZnS heterostructures were investigated. Compared with the pristine smooth and hexagonal ZnO NRAs, the surfaces of ZnO/ZnS heterostructures become rough and rounded in shape. Through the sulfidation treatment, some ZnO/ZnS heterostructures with a diameter of no more than 60 nm break and fade away, leading to a decrease in number density of ZnO/ZnS heterostructures. The texture coefficients of (002) diffraction peaks of ZnO decrease from 2.32 to 2.158. ZnO/ZnS heterostructures exhibit efficient separation rate of electron-hole pairs and enhanced visible light absorption, and thus have higher photocurrent density and photoconversion efficiency. In the polysulfide electrolyte solution , ZnO/ZnS heterostructures show good stability.
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高影响因子
iScience
·
2022
·
IF 6.107
Dandan Zhang,Yan-Hua Liu,Lianqing Zhu
Due to the outstanding electron injection/transport capability of ZnO nanoparticles (NPs), quantum-dot light-emitting diodes (QLEDs) are commonly constructed by employing a hybrid device structure with ZnO electron-transporting layer and organic hole-transporting layer. However, the emission quenching of quantum dots and excessive electron injection induced by ZnO NPs also limits the device efficiency and operational stability. Here, diethylenetriamine (DETA) molecules as the ligands are introduced to modify the surface of ZnO NPs, which not only passivate the surface defects of ZnO but also suppress the overwhelming electron injection in the QLED. As a result, the device based on the DETA-modified ZnO NPs exhibits a peak external quantum efficiency of 23.7%, corresponding to an enhancement factor of 129% in comparison with that of the device with as-synthesized ZnO as the electron-transporting layer. The easy and feasible strategy may also be applicable to other photoelectric devices, such as solar cells and photodetectors.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2022
·Vol. 62
·期 5
·1641-1649
·
IF 2.573
Hui Fang,Anlin Chen,Lingjie Zhang,Sheng Chen,Fangjuan Wu,Hui Chen
Three-dimensional boron nitride/zinc oxide (3D-BN-ZnO) scaffolds were prepared by the ice-templating method, in which ZnO particles were in situ formed by sintering. Then, polydimethylsiloxane (PDMS)/3D-BN-ZnO composites were fabricated via vacuum infiltration of PDMS prepolymer into the scaffolds and curing. Compared with the composite prepared by simple blending, the thermal conductivity of the composite prepared based on the ice-templating method is much higher due to the excellent orientation of hexagonal boron nitride (hBN) sheets. Based on the same content of hBN sheets, the further introduction of 2.7 wt% ZnO particles formed in situ by sintering could promote the thermal conductivity of the composite to the value of 1.45 W m −1 K −1 , which is 70.6% higher than that of the PDMS/3D-BN composite. In addition, compared with the PDMS/3D-BN composite containing more hBN sheets, the PDMS/3D-BN-ZnO composite with 2.7 wt% ZnO particles possesses fewer fillers but higher thermal conductivity. It suggests that ZnO particles could synergistically improve the thermal conductivity. As revealed from the morphology of the composites, many ZnO particles are located between hBN sheets and thus construct thermally conductive paths. This study provides a new strategy for the design of thermal interface materials with high thermal conductivity.
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高影响因子
TALANTA
·
2017
·
IF 4.162
Hai-Hui Wang,Xuan-Jie Chen,Wei-Tian Li,Wen-Hui Zhou,Xiu-Chun Guo,Wen-Yi Kang,Dong-Xing Kou,Zheng-Ji Zhou,Yue-Na Meng,Qing-Wen Tian,Si-Xin Wu
In this study, ZnO nanotubes (ZNTs) were prepared onto fluorine-doped tin oxide (FTO) glass and used as supports for MIPs arrays fabrication. Due to the imprinted cavities are always located at both inner and outer surface of ZNTs, these ZNTs supported MIPs arrays have good accessibility towards template and can be used as sensing materials for chemical sensors with high sensitivity, excellent selectivity and fast response. Using K 3 [Fe(CN) 6 ] as electron probe, the fabricated electrochemical sensor shows two linear dynamic ranges (0.02–5 μM and 10–800 μM) towards dopamine. This proposed electrochemical sensor has been applied for dopamine determination with satisfied recoveries and precision. More complex human urine samples also confirmed that the proposed method has good accuracy for dopamine determination in real biological samples. These results suggest potential applicability of the proposed method and sensor in important molecule analysis.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 36
·26788-26800
·
IF 2.779
Wang Renjie,Huang Aiwen,Yan JiaHui,Cheng Qiaohuan,Chen Qianqian,Yao Chenxue,Zhu He,He Fang,Miao Wei,Zhou Xuefei,Xu Sankui
Photocatalysts with different compositions have wide applications in the field of antibiotics degradation, especially for tetracycline hydrochloride (TC-HCl) degradation. One of the key pathways to improve their performance is by recombination of organic and metallic materials. In this innovative research, the composite photocatalyst PI/ZnO was successfully fabricated by one facile sintering process. The samples were characterized by scanning electron microscope (SEM), Fourier transforms infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The photocatalytic performance of the samples was studied by the UV–visible diffuse reflectance spectrum (DRS). The results showed that the visible-light photocatalytic performance for TC-HCl degradation of PI/ZnO composite was approximately 71.2-fold and 3.1-fold as high as that of pure PI and bare ZnO, respectively. In addition, the mechanism of the photocatalytic reaction was revealed by the radical quenching experiments.
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高影响因子
Journal of Industrial Textiles
·
2022
·
IF 2.926
Suo Liu,Jinyan Hu,Dingsheng Wu,Haiao Zeng,Tang Zhou,Maohuan Yang,Quan Feng
In order to solve the increasingly serious problem of printing and dyeing wastewater pollution, a kind of novel, efficient, and reusable spunlaced viscose/polyaniline-ZnO/GO fibrous membrane was fabricated in this work. Specifically, spunlaced viscose/polyaniline conductive fibrous membrane was firstly prepared by in-situ growth method, followed with the growth of zinc oxide (ZnO) and graphene oxide (GO) via the hydrothermal route to obtain spunlaced viscose/PANI-ZnO/GO fibrous membrane (SV@PANI-ZnO/GO membrane). The results show that the decolorization rate of SV@PANI-ZnO/GO membrane for methylene blue (5.0 mg/L) was 97.4% within 120 min, and the decolorization rate remained above 76.7% after five cycles. Moreover, the reaction process conformed to a quasi-first order kinetic model with the apparent rate constant of 0.0209 min–1. Meanwhile, the free radical capture experiment revealed that the main reactive species in the decolorization process was .OH. This work may provide a new method for designing photocatalytic materials for environmental applications.
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高影响因子
APPLIED SURFACE SCIENCE
·
2016
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IF 3.15
Yizhou Zhu,Xiangmei Liu,Kelvin W.K. Yeung,Paul K. Chu,Shuilin Wu
One-dimensional (1D) nanostructures of ZnO using atomic layer deposition (ALD) on chitosan (CS) modified carbon nanotubes (CNTs) were first introduced onto the surfaces of biomedical implants. When the content of ZnO is not sufficient, CNTs can strengthen the antibacterial activity against E. coli and S. aureus by 8% and 39%, respectively. CS can improve the cytocompatibility of CNTs and ZnO. The amount of Zn content can be controlled by changing the cycling numbers of ALD processes. This hybrid coating can not only endow medical implants with high self-antibacterial efficacy against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) of over 73% and 98%, respectively, but also regulate the proliferation and osteogenic differentiation of osteoblasts by controlling the amount of ZnO.
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高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Qiao Zheng,Zhaohuang Guo,Jinyong Zhuang,Ziqi Zhou,Jionghua Wu,Hui Deng,Caixia Zhang,Weihuang Wang,Shuying Cheng
Zinc oxide (ZnO) is used as an electron transport layer (ETL) in inverted organic solar cells (IOSCs) owing to its excellent performance, such as good light transmission and high conductivity, while its surface defects and photocatalytic properties limit the development of IOSCs. Herein, we apply an antioxidant, syringic acid (SA), to modify the surface of ZnO film, which observably improve the efficiency and stability of IOSCs. It is found that SA can effectively passivate the surface defects of ZnO and optimize surface morphology, as well as reduce the work function (W F ) of ZnO resulting in an improvement of the charge transport of IOSCs. The power conversion efficiency (PCE) of PM6:Y6-based IOSCs is increased from 16.19 % to 18.18 %, it is the highest PCE values of the single-junction IOSCs based on PM6:Y6 system as reported. Meanwhile, the photostability of the device is markedly improved due to SA could suppress the photocatalytic of ZnO under the ultraviolet aging.
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高影响因子
Journal of Physical Chemistry Letters
·
2025
·
IF 4.6
Shuangyu Wang,Man Zhao,Dayong Jiang,Qingcheng Liang
In this work, we demonstrate a filter-free self-powered photodetector based on PTB7-Th:ITIC/ZnO heterojunction that exhibits remarkable selective spectral response characteristics. The device achieves band-selective detection through innovative manipulation of incident light direction, enabling multiple spectral detection capabilities within a single architecture. Under 0 V bias voltage operation, the device exhibits dual-mode detection capability depending on the illumination direction. When illuminated through the ZnO film side, the photodetector demonstrates visible light detection with a peak responsivity of 350 mA W−1 across the 400–800 nm spectral range. Conversely, illumination through the bulk heterojunction film side enables broadband detection from ultraviolet to visible spectrum (300–800 nm), showing distinct responsivity peaks at 2 mA W−1 and 29 mA W−1 for ultraviolet and visible regions, respectively. The selective spectral response characteristics of the PTB7-Th:ITIC/ZnO photodetector are primarily governed by two key factors: the optimized width of the depletion layer region and the distinctive distribution profile of the internal electric field. This work establishes a paradigm for developing autonomous photodetection systems capable of adaptive spectral discrimination, paving the way for advanced optoelectronic applications in complex environmental conditions.
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DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2024
·
IF 15.7
Jiafa Chen,Peng Bai,Shibo Yuan,Yi He,Zifan Niu,Yicheng Zhao,Yongdan Li
Designing highly efficient photocatalyst for the valorization of CO 2 is an ideal strategy to reduce greenhouse gas emissions and utilize solar energy. In this study, a S-scheme heterojunction photocatalyst is fabricated by solvothermal impregnation of ZnO on W 18 O 49 for photocatalytic CO 2 N -formylation of aniline. The localized surface plasmon resonance effect of W 18 O 49 improves the absorption capacity for long-wave light significantly, and the hot electrons generated in W 18 O 49 with a high energy can migrate to the conduction band of ZnO and thus enhance the photocatalytic reduction ability. Meanwhile, the S-scheme heterojunction facilitates the separation of photoinduced charge carriers and preserves the redox ability of W 18 O 49 /ZnO composite photocatalyst. The conversion of aniline reaches 99.1% after 5 h reaction under visible light irradiation at room temperature with an N -formylaniline selectivity of 100%. A possible photocatalytic reaction mechanism is proposed. This study paves a promising way for the design of highly efficient photocatalyst and the sustainable utilization of CO 2 .
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