中国科学院机构知识库网格系统: 检索

Synthesis and comparative evaluation of optical and electrochemical properties of efficacious heterostructured-nanocatalysts of ZnSe with commercial and reduced titania 期刊论文 OAI收割
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 卷号: 879
作者: Jamil, Sadaf; Jabeen, Naila; Khan, Latif U.; Bashir, Amna; Janjua, Naveed

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VISIBLE-LIGHT-DRIVEN AGBR-AG-BI2WO6 NANOJUNCTION SYSTEM PHOTOCATALYTIC ACTIVITY HYDROGEN EVOLUTION RAMAN-SPECTRUM ANATASE TIO2 MIXED-PHASE COMPOSITE PHOTOLUMINESCENCE LUMINESCENCE

食用蔬菜能吸收和积累微塑料 期刊论文 OAI收割
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者: 李连祯; 周倩

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微塑料生菜聚苯乙烯微球吸收积累健康风险 microplastics lettuce polystyrene microbeads uptake accumulation human health risk Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.

Highly Emissive Carbon Dots in Solid State and Their Applications in Light-Emitting Devices and Visible Light Communication 期刊论文 OAI收割
Acs Sustainable Chemistry & Engineering, 2019, 卷号: 7, 期号: 10, 页码: 9301-9308
作者: E.S.Liu; D.Li; X.J.Zhou; G.F.Zhou; H.Xiao

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Carbon dots,Aggregation-induced luminescence quenching,Solid-state,luminescence,Light-emitting diodes,Visible light communication,graphene quantum dots

Pr:Ca1-xRxF2+x (R=Y or Gd) crystals: Modulated blue, orange and red emission spectra with the proportion of R3+ ions 期刊论文 OAI收割
OPTICAL MATERIALS, 2018, 卷号: 78, 页码: 88, 93
作者: Yu, Hao; Qian, Xiaobo; Guo, Linyang; Jiang, Dapeng; Wu, Qinghui

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收藏 | 浏览/下载：35/0 | 提交时间：2018/12/28

Pr,Y(Gd):CaF2 single crystals Modulated spectral properties Visible luminescence

Gd2O2S:Yb,Er submicrospheres with multicolor upconversion fluorescence 期刊论文 OAI收割
rsc advances, 2012, 卷号: 2, 期号: 11, 页码: 4777-4781
Song YH; Huang YJ; Zhang LH; Zheng YH; Guo N; You HP

收藏 | 浏览/下载：31/0 | 提交时间：2013/06/30

TO-VISIBLE CONVERSION ANOMALOUS THERMALIZATION NANOCRYSTALS LUMINESCENCE LANTHANIDE PARTICLES NANOTUBES PHOSPHORS DEVICES IONS

Lanthanide metal organic frameworks based on octahedral secondary building units: Structural, luminescent, and magnetic properties 期刊论文 OAI收割
Inorganic Chemistry Communications, 2011, 卷号: 14, 期号: 7, 页码: 1165-1169
H. B. Zhang; Y. Peng; X. C. Shan; C. B. Tian; L. Ping; S. W. Du

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Pcu net topology 1 Lanthanide complexes 10-phenanthroline Luminescent property Magnetic property earth coordination polymers crystal-structure visible luminescence zeolite topology net topology acid ions intensities complexes

Control Over the Crystallinity and Defect Chemistry of YVO(4) Nanocrystals for Optimum Photocatalytic Property 期刊论文 OAI收割
European Journal of Inorganic Chemistry, 2011, 期号: 14, 页码: 2211-2220
L. S. Yang; G. S. Li; W. B. Hu; M. L. Zhao; L. Sun; J. Zheng; T. J. Yan; L. P. Li

收藏 | 浏览/下载：58/0 | 提交时间：2012/06/06

Vanadium Yttrium Nanoparticles Crystal engineering Photocatalysis visible-light irradiation temperature synthesis optical-properties tio2 nanocrystals quantum dots nanoparticles luminescence zno degradation systems

Design of visible, infrared dual-channel optical system for space target detection (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
Zhang X. Y.

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This paper designs a total of 250mm dual-channel optical system including visible (0.5m0.8m) infrared (3m5m). The main system is a three-reflection system and the primary mirror is designed as the first and the third reflecting surface with different figuring. The cooling infrared detector was choiced in infrared channel and achieves 100% cool shield efficiency of luminescence through the second imaging. The main benefits of this design are the large corrected and unvignetted FOV an easily baffling of stray light small encumbrance and an easy handing. 2011 IEEE.

Sensitized luminescence in dinuclear lanthanide(III) complexes of bridging 8-hydroxyquinoline derivatives with different electronic properties 期刊论文 OAI收割
Dalton Transactions, 2011, 卷号: 40, 期号: 20, 页码: 5549-5556
H. B. Xu; J. Li; L. X. Shi; Z. N. Chen

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near-infrared luminescence visible-light sensitization photophysical properties energy-transfer yb arrays substituted 8-hydroxyquinolines quinolinolate complexes highly luminescent emission nd

Synthesis, structures and physical properties of new 3D lanthanide coordination polymers constructed from 1,2,4,5-benzenetetracarboxylic acid 期刊论文 OAI收割
Journal of Molecular Structure, 2011, 卷号: 985, 期号: 2-3, 页码: 355-360
H. B. Zhang; C. B. Tian; S. T. Wu; J. D. Lin; Z. H. Li; S. W. Du

收藏 | 浏览/下载：49/0 | 提交时间：2012/06/06

Crystal structure Lanthanide complexes Luminescent property Magnetic property secondary building units rare-earth ions organic frameworks visible luminescence magnetic-properties crystal-structure complexes architecture intensities chemistry