Scientific Reports
·
2021
·Vol. 11
·期 1
·13622
·
IF 4.38
Li Jian-Yu,Chen Yan-Ting,Shi Meng-Zhu,Li Jian-Wei,Xu Rui-Bin,Pozsgai Gabor,You Min-Sheng
A detailed knowledge on the spatial distribution of pests is crucial for predicting population outbreaks or developing control strategies and sustainable management plans. The diamondback moth, Plutella xylostella , is one of the most destructive pests of cruciferous crops worldwide. Despite the abundant research on the species’s ecology, little is known about the spatio-temporal pattern of P . xylostella in an agricultural landscape. Therefore, in this study, the spatial distribution of P . xylostella was characterized to assess the effect of landscape elements in a fine-scale agricultural landscape by geostatistical analysis. The P . xylostella adults captured by pheromone-baited traps showed a seasonal pattern of population fluctuation from October 2015 to September 2017, with a marked peak in spring, suggesting that mild temperatures, 15–25 °C, are favorable for P . xylostella . Geostatistics (GS) correlograms fitted with spherical and Gaussian models showed an aggregated distribution in 21 of the 47 cases interpolation contour maps. This result highlighted that spatial distribution of P . xylostella was not limited to the Brassica vegetable field, but presence was the highest there. Nevertheless, population aggregations also showed a seasonal variation associated with the growing stage of host plants. GS model analysis showed higher abundances in cruciferous fields than in any other patches of the landscape, indicating a strong host plant dependency. We demonstrate that Brassica vegetables distribution and growth stage, have dominant impacts on the spatial distribution of P . xylostella in a fine-scale landscape. This work clarified the spatio-temporal dynamic and distribution patterns of P . xylostella in an agricultural landscape, and the distribution model developed by geostatistical analysis can provide a scientific basis for precise targeting and localized control of P . xylostella .
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-19
·
IF 10.2
Chen Bing,Zheng Kaifan,Fang Shubin,Huang Kangping,Chu Chengchao,Zhuang Junyang,Lin Jin,Li Shaoguang,Yao Hong,Liu Ailin,Liu Gang,Lin Jizhen,Lin Xinhua
Background The combination of drug delivery with immune checkpoint targeting has been extensively studied in cancer therapy. However, the clinical benefit for patients from this strategy is still limited. B7 homolog 3 protein (B7-H3), also known as CD276 (B7-H3/CD276), is a promising therapeutic target for anti-cancer treatment. It is widely overexpressed on the surface of malignant cells and tumor vasculature, and its overexpression is associated with poor prognosis. Herein, we report B7H3 targeting doxorubicin (Dox)-conjugated gold nanocages (B7H3/Dox@GNCs) with pH-responsive drug release as a selective, precise, and synergistic chemotherapy-photothermal therapy agent against non-small-cell lung cancer (NSCLC). Results In vitro, B7H3/Dox@GNCs exhibited a responsive release of Dox in the tumor acidic microenvironment. We also demonstrated enhanced intracellular uptake, induced cell cycle arrest, and increased apoptosis in B7H3 overexpressing NSCLC cells. In xenograft tumor models, B7H3/Dox@GNCs exhibited tumor tissue targeting and sustained drug release in response to the acidic environment. Wherein they synchronously destroyed B7H3 positive tumor cells, tumor-associated vasculature, and stromal fibroblasts. Conclusion This study presents a dual-compartment targeted B7H3 multifunctional gold conjugate system that can precisely control Dox exposure in a spatio-temporal manner without evident toxicity and suggests a general strategy for synergistic therapy against NSCLC.
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高影响因子
RARE METALS
·
2012
·Vol. 31
·期 6
·599-603
·
IF 0.593
Li Yanhong,Lu Haiyan,Zhang Yongming,Ma Jing,Song Guoyi
Nanocrystalline Gd 3 Ga 5 O 12 :Eu 3+ with cubic phase was prepared by a urea homogeneous precipitation method. X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermo-gravimetric and differential thermal analysis (TG-DTA) and photoluminescence spectra were used to characterize the samples. The effects of the initial solution pH value and urea content on the structure of the sample were studied. The XRD results show that pure phase Gd 3 Ga 5 O 12 can be obtained at pH =6 and pH =8 of the initial solution. The average crystallite size can be calculated as in the range of 24∼33 nm. The average crystallite size decreases with increasing molar ratio of urea to metal ion. The results of excitation spectra and emission spectra show that the emission peaks are ascribed to 5 D 0 → 7 F J transitions of Eu 3+ , and the magnetic dipole transition originated from 5 D 0 → 7 F 1 of Eu 3+ is the strongest; the broad excitation bands belong to change transfer band of Eu-O and the host absorption of Gd 3 Ga 5 O 12 . An efficient energy transfer occurs from Gd 3+ to Eu 3+ .
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高影响因子
Frontiers of Chemical Science and Engineering
·
2023
·Vol. 17
·期 7
·930-941
·
IF 4.5
Tian Guodong,Duan Chao,Zhou Bingxu,Tian Chaochao,Wang Qiang,Chen Jiachuan
Membrane technology for wastewater remediation has aroused wide interest owing to its unique properties and potential applications. However, it remains challenging to explore green, efficient and robust membrane material and technique for complex wastewater treatment. Herein, we proposed using a simple electrospinning and in situ seeding method to fabricate a lignin-based electrospun nanofiber membrane (LENM) decorated with photo-Fenton Ag@MIL-100(Fe) heterojunctions for efficient separation of oil/water emulsions and degradation of organic dye. Thanks to the embedded lignin in LENM, an ultrahigh MIL-100(Fe) loading (53 wt %) with good wettability and high porosity was obtained. As a result, the hybrid Ag@MIL-100(Fe)/LENM exhibited excellent oil/water emulsions separation efficiency (more than 97%) without a compromise of water flux. Moreover, the hybrid membrane showed an excellent dye removal with degradation of 99% methylene blue within 30 min under illumination, which is attributed to a synergy of dye adsorption/enrichment and photo-Fenton catalytic degradation from Ag@MIL-100(Fe). Therefore, the lignin-based photo-Fenton hybrid membrane can lay the foundation for the preparation and application of green, sustainable and versatile membrane materials and technologies for efficient complex wastewater remediation.
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高影响因子
Science China-Materials
·
2021
·Vol. 65
·期 2
·477-485
·
IF 8.273
Li Hao,Li Yaoxin,Lian Yukun,Xie Weiwei,Chen Ling,Zhang Jinsong,Wu Yang,Fan Shoushan
As a sister compound of MnBi 2 Te 4 , the high-quality MnSb 2 Te 4 single crystals are grown via solid-state reaction where prolonged annealing and narrow temperature window play critical roles on account of its thermal metastability. Single-crystal X-ray diffraction (SCXRD) analysis on MnSb 2 Te 4 illustrates a crystal model that is isostructural to MnBi 2 Te 4 , consisting of Te-Sb-Te-Mn-Te-Sb-Te septuple layers (SLs) stacking in an ABC sequence. However, MnSb 2 Te 4 reveals a more pronounced cation intermixing in comparison with MnBi 2 Te 4 , comprising 28.9(7)% Sb antisite defects on the Mn (3a) site and 19.3(6)% Mn antisite defects on the Sb (6c) site, which may give rise to novel magnetic properties in emerging layered MnBi 2 Te 4 -family materials. Unlike the antiferromagnetic (AFM) nature in MnBi 2 Te 4 , MnSb 2 Te 4 exhibits a glassy magnetic ground state below 24 K and can be easily tuned to a ferromagnetic state under a weak applied magnetic field. Its magnetic hysteresis, anisotropy, and relaxation process are investigated in detail via static and dynamic magnetization measurements. Moreover, anomalous Hall effect as a p-type conductor is demonstrated with transport measurements. This work grants MnSb 2 Te 4 a possible access to the future exploration of exotic quantum physics by removing the odd/even layer number restraint in realizing quantum transport phenomena in intrinsic AFM MnBi 2 Te 4 -family materials, as a result of the crossover between its magnetism and potential topology arising from the Sb-Te layer.
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高影响因子
Frontiers of Environmental Science & Engineering
·
2019
·Vol. 13
·期 6
·1-11
·
IF 3.883
Guo Xiaoyan,Li Chunyu,Li Chenghao,Wei Tingting,Tong Lin,Shao Huaiqi,Zhou Qixing,Wang Lan,Liao Yuan
Although carbon nanomaterials have been widely used as effective nanofillers for fabrication of mixed matrix membranes (MMMs) with outstanding performances, the reproducibility of the fabricated MMMs is still hindered by the non-homogenous dispersion of these carbon nanofillers in membrane substrate. Herein, we report an effective way to improve the compatibility of carbon-based nanomaterials with membrane matrixes. By chemically conjugating the oxidized CNTs (o-CNTs) and GO using hexanediamine as cross-linker, a novel carbon nanohybrid material (G-CNTs) was synthesized, which inherited both the advanced properties of multi-walled carbon nanotubes (CNTs) and graphene oxide (GO). The G-CNTs incorporated polyvinylidene fluoride (PVDF) MMMs (GCNTs/PVDF) were fabricated via a non-solvent induced phase separation (NIPS) method. The filtration and antifouling performances of G-CNTs/PVDF were evaluated using distillate water and a 1 g/L bovine serum albumin (BSA) aqueous solution under 0.10 MPa. Compared to the MMMs prepared with o-CNTs, GO, the physical mixture of o-CNTs and GO and pure PVDF membrane, the G-CNTs/PVDF membrane exhibited the highest water flux up to 220 L/m 2 /h and a flux recovery ratio as high as 90%, as well as the best BSA rejection rate. The excellent performances should be attributed to the increased membrane pore size, porosity and hydrophilicity of the resulted membrane. The successful synthesis of the novel nanohybrid G-CNTs provides a new type of nanofillers for MMMs fabrication.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 52
·期 7
·3642-3656
·
IF 2.302
Long Lu,Yao Yadong,Yan Minglei,Wang Hongjing,Zhang Guanggao,Kong Menglai,Yang Lin,Liao Xiaoming,Yin Guangfu,Huang Zhongbing
Ni 3 S 2 @polypyrrole/nickel foam (Ni 3 S 2 @PPy/NF) composite was successfully synthesized by combining a facile hydrothermal synthesis and a simple electrochemical-deposited process. For comparative study, the honeycomb-shaped Ni 3 S 2 had in situ been grown on NF without the addition of any nickel salt to obtain the Ni 3 S 2 /NF composite. The electrochemical measurement results show that the area capacitance of the Ni 3 S 2 @PPy/NF electrode is 1.13 F cm −2 that is slightly lower than 1.26 F cm −2 of the Ni 3 S 2 /NF electrode at a high current density of 30 mA cm −2 , yet its rate capability and cycling stability are far better than those of the Ni 3 S 2 /NF electrode. Meanwhile, an asymmetric supercapacitor on the basis of the Ni 3 S 2 @PPy/NF anode and the AC cathode exhibits a high energy density and power density of 17.54 Wh kg −1 and 179.33 W kg −1 at 2.5 mA cm −2 , respectively; besides, the energy density is still 8.67 Wh kg −1 at a power density of 3587.41 W kg −1 even at 50 mA cm −2 . Moreover, the capacitances of the device remain unchanged after 3000 galvanostatic charge/discharge cycles at a high current density of 30 mA cm −2 . Furthermore, two such 1 cm 2 devices connected in series can light five 40-mW LED indicators or power one of the same-power LED indicator for 20 min after being fully charged. The results demonstrate that our asymmetric supercapacitor has a promising potential in commercial applications.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 5
·3267-3279
·
IF 2.599
Duan Haojie,Wang Yifang,Li Shuo,Li Haiying,Liu Li,Du Liting,Cheng Yali
Pure and Ho-doped In 2 O 3 nanotubes (NTs) and porous nanotubes (PNTs) were successfully synthesized by conventional electrospinning process and the following calcination at different temperatures. X-ray diffractometry (XRD), thermogravimetric analysis (TGA), Raman spectrometer, energy-dispersive spectroscopy, scanning and transmission electron microscopy were carefully used to investigate the morphologies, structures and chemical compositions of these samples. Their sensing properties toward ethanol gas were studied. Compared with pure In 2 O 3 NTs (response value is 17), pure In 2 O 3 PNTs (response value is 20) demonstrated enhanced sensing characteristics. What’s more, the response of Ho-doped In 2 O 3 PNTs sensors to 100 ppm ethanol was up to 60 at 240 °C, which increased three times more than that of the pure In 2 O 3 PNTs. Additionally, the minimum concentration for ethanol was 200 ppb (response value is 2). The increased gas-sensing ability was attributed not only to the hollow and porous structure, but to the Ho dopant. Furthermore, Ho-doped In 2 O 3 PNTs enable sensor to discriminate between ethanol and the other gas distinctly, particularly acetone that is usually indistinguishable from ethanol. Also, by analyzing XRD, TGA and Raman spectrometer, a possible formation mechanism of porous nanotubes and sensing mechanism were put forward.
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高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2020
·Vol. 29
·期 11
·7239-7249
·
IF 1.652
Sang Changcheng,Cai Xiaoping,Zhu Lu,Ren Xuanru,Niu Gao,Wang Xiaohong,Feng Peizhong
To achieve the low energy consumption and high strength joining between Ti and Ni, a novel joining method (rapid thermal explosion, TE) was developed for joining dissimilar metals using Ti-Al mixture powders as flux. The TE reaction temperature of Ti-Al flux was measured, and the microstructure and mechanical properties of Ti/Ni joint were investigated. The results reveal that the combustion temperature of the Ti-Al powder interlayer is 1103 °C, which is higher than the joining temperature, and an obvious self-exothermic phenomenon lasts 20 s. The intermetallic compound diffusion layers formed at both interfaces mainly owing to the diffusion of Al and the growth activation energy of diffusion layers near both interfaces are 79.68 kJ/mol and 38.26 kJ/mol, respectively. Based on the sheer strength and diffusion layer, the formation mechanism of Ti/Ni joints is metallurgical bonding through atomic diffusion and formation of the diffusion layer.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 15
·12638-12648
·
IF 2.22
Zhou Xiaohong,Chen Yongyang,Wang Peiying,Xu Chengyang,Yan Qishe
The AgI/BiPO 4 n–n heterojunction hybrids were favorably fabricated over amorphous particles AgI closely in contact with petty polyhedron-assembled star-like BiPO 4 by precipitation technology for the first time. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–Vis diffuse reflectance spectra (DRS), electrochemical test, etc. The degradation of tetracycline hydrochloride (TC) and methylene blue (MB) was employed to testify the performance of as-prepared composites upon exposure of simulated solar light and the AB-X composites exhibited boosted degradation efficiency in comparison with the as-prepared pure BiPO 4 and AgI. For instance, the calculated k TC of pseudo-first-order kinetics model on 24 wt% AgI/BiPO 4 sample was 36 times relative to those on pure BiPO 4 . This enhanced activity might due to increased charge transfer and separation efficiency in the formed n–n heterojunction and the dominant reaction active species were authenticated by trapping experiments. Furthermore, the internal electric field in the AgI/BiPO 4 heterojunction and the transfer path of electron–holes were tentatively deduced through graphical elucidation.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 52
·期 6
·3110-3123
·
IF 2.302
Li Jingang,Wu Zheyi,Sun Xiaoyu,Zhang Xianwen,Dai Rucheng,Zuo Jian,Zhao Zhi
In this paper, Eu 3+ -doped yttrium tungstate (Y 2 WO 6 ) nanophosphors with different morphologies have been synthesized by a hydrothermal method with the assistance of cetyltrimethyl ammonium bromide. X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), and photoluminescence spectroscopy (PL) were used to characterize the products. The pH value of the starting solution plays a crucial role in the structures and morphologies of the samples. When the precursors synthesized under alkaline condition are annealed at 1100 °C in the air, the pure monoclinic Y 2 WO 6 phase can be obtained. The results of HRTEM and SAED are consistent with those of the XRD patterns, confirming the high crystallinity of the products. A detailed study of the optical properties, including the UV–Vis diffuse reflection spectra, the excitation and emission spectra, CIE coordinate, and color purity of Y 2 WO 6 :Eu 3+ nanophosphors with different doping concentrations, are presented here. The critical distance R
c and energy transfer mechanism for the concentration quenching of Eu 3+ ions are discussed in detail. In addition, the decay time and the thermal stability of the samples have been also investigated elaborately. The PL properties of the as-synthesized materials indicate promising applications in UV-pumped red light-emitting diodes.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·Vol. 333
·期 4
·1949-1961
·
IF 1.5
Zhou Haiyan,Dai Ying,Zou Rong,Wang Yusheng,Dai Wei,Li Zhuyao,Tao Qinqin,Liu Zhirong
For highly efficient solid-liquid separation after uranium adsorption from acidic wastewater, layered metal sulfide@polymer nanofibers, KMS-1@PVA/PAA, KMS-2@PVA/PAA, and KTS-3@PVA/PAA, were successfully synthesized. The outcomes of batch adsorption experiments revealed that uranium(VI) removal on three nanofibers exhibited dependency on pH and almost no dependency on ionic strength. The membrane separation experiment indicated that the adsorption capacities for KMS-1@PVA/PAA, KMS-2@PVA/PAA, and KTS-3@PVA/PAA were 234.78 mg/g, 254.18 mg/g, and 205.05 mg/g, respectively, ranking competitive position among the reported fiber materials. The determined kinetics, isotherms and thermodynamic parameters proved the layered metal sulfide@polymer nanofiber were prone to adsorb uranium in acidic environment.
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高影响因子
危险品化学品经营许可证（带存储）