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Influence of metal-contamination on distribution in subcellular fractions of the earthworm (Metaphire californica) from Hunan Province, China

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Journal of Environmental Sciences 2018年第11期30卷 127-137页

作者： Kun Wang Yuhui Qiao Huiqi Zhang shizhong yue Huafen Li Xionghui Ji Longsheng Liu College of Resources and Environmental Science China Agricultural University Beijing 100193 China Hunan Academy of Agricultural Sciences Changsha 410125 China Hengyang Academy of Agricultural Sciences Hengyang 421151 China

Earthworms have the ability to accumulate of heavy metals, however, there was few studies that addressed the metals in earthworm at subcellular levels in fields. The distributions of metals （Cd, Cu, Zn, and Pb） in subcellular fractions （cytosol, debris, and granules） of earthworm Metaphire californica were investigated. The relationship between soil metals and earthworms were analyzed to explain its high plasticity to inhabit in situ contaminated soil of Hunan Province, south China. The concentration of Cd in subcellular compartments showed the same pattern as Cu in the order of cytosol 〉 debris 〉 granules. The distribution of Zn and Pb in earthworms indicated a similar propensity for different subcellular fractions that ranked as granules 〉 debris 〉 cytosol for Zn, and granules 〉 cytosol 〉 debris for Pb. The internal metal concentrations in earthworms increased with the soil metals （p 〈 0.05）. Significant positive correlations were found between soil Cd and Cd concentrations in cytosol and debris （p 〈 0.01）. Moreover, the soil Pb concentration significantly influenced the Pb concentrations in cytosol and debris （p 〈 0.01）, similar to that of Cd. The soil Cu concentrations was only associated with the Cu in granules （p 〈 0.05）. Soil Zn concentrations correlated with the Zn concentrations in each subcellular fraction （p 〈 0.05）. Our results provide insights into the variations of metals partitioning in earthworms at subcellular levels and the relationships of soil metals, which could be one of the detoxiflcation strategies to adapt the long-term contaminated environment.

关键词： Heavy metals Metaphire californica Subcellular fractions South China

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Enhancing multifunctional photocatalysis with acetate-assisted cesium doping and unlocking the potential of Z-scheme solar water splitting

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Carbon Energy 2024年第3期6卷 178-195页

作者： Mengmeng Ma Jingzhen Li Xiaogang Zhu Kong Liu Kaige Huang Guodong Yuan shizhong yue Zhijie Wang Shengchun Qu Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Department of Physics College of Physical Science and TechnologyXiamen UniversityXiamenChina State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijingChina

Graphitic carbon nitride(g-C_(3)N_(4))has been extensively doped with alkali metals to enlarge photocatalytic output,in which cesium(Cs)doping is predicted to be the most ***,the sluggish diffusion and doping kinetics of precursors with high melting points,along with imprecise regulation,have raised the debate on whether Cs doping could make *** this matter,we attempt to confirm the positive effects of Cs doping on multifunctional photocatalysis by first using cesium acetate with the character of easy *** optimized Csdoped g-C_(3)N_(4)(CCN)shows a 41.6-fold increase in visible-light-driven hydrogen evolution reaction(HER)compared to pure g-C_(3)N_(4) and impressive degradation capability,especially with 77%refractory tetracycline and almost 100%rhodamine B degradedwithin an *** penetration ofCs+is demonstrated to be a mode of interlayer doping,and Cs–N bonds(especially with sp^(2) pyridine N in C═N–C),along with robust chemical interaction and electron exchange,are *** atomic configuration triggers the broadened spectral response,the improved charge migration,and the activated photocatalytic ***,we evaluate the CCN/cadmium sulfide hybrid as a Z-scheme configuration,promoting the visible HER yield to 9.02 mmol g^(−1) h^(−1),which is the highest ever reported among all CCN *** work adds to the rapidly expanding field of manipulation strategies and supports further development of mediating served for photocatalysis.

关键词： acetate-assisted cesium doping multifunctional photocatalysis Z-scheme

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Optical bandgap energy of CH3NH3PbI3 perovskite studied by photoconductivity and reflectance spectroscopy

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Science China(Technological Sciences) 2018年第6期61卷 886-892页

作者： HUANG Wei LIU Yu yue shizhong ZHU LaiPan JIN Peng WU Qing ZHANG Yang QU ShengChun WANG ZhiJie CHEN YongHai Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beefing 100049 China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China

Organic-inorganic hybrid perovskite materials have been receiving considerable attention due to their promising applications in many optoelectronic fields. However, the optical bandgap of CH3NH3PbI3 perovskite is still disputed. In order to comprehend the intrinsic characteristics of these materials, we study the near-band-edge optical responses of the solution-processed CH3NH3PbI3 perovskite crystals by photoconductivity and reflectance spectroscopy at room temperature. All these spectra of the CH3NH3PbI3 polycrystals show only one significant absorption edge at 1.58 eV. However, we observe an extra absorption edge at 1.47 eV in CH3NH3PbI3 single crystal. We establish a simple kinetic model of charge annihilation processes to explain why the low-energy structure of the photoconductivity and diffuse reflectance spectra of CH3NH3PbI3 polyerystals disappear, which provides another possibility for understanding the difference in absorption edge. It is noteworthy that this low-energy absorption edge of CH3NH3PbI3 single crystal has, to the best of our knowledge, seldom been reported on organic-inorganic hybrid perovskites. Therefore, the CH3NH3PbI3 single crystal exhibits a relatively wide absorption which makes it a promising candidate for photoelectric applications.

关键词： CH3NH3PbI3 perovskite photoconductivity spectroscopy reflectance spectroscopy absorption edge

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State-of-the-art advances in vacancy defect engineering of graphitic carbon nitride for solar water splitting

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Journal of Semiconductors 2023年第8期44卷 16-34页

作者： Jie Li Kaige Huang Yanbin Huang Yumin Ye Marcin Ziółek Zhijie Wang shizhong yue Mengmeng Ma Jun Liu Kong Liu Shengchun Qu Zhi Zhao Yanjun Zhang Zhanguo Wang College of Mechanical and Electrical Engineering Handan UniversityHandan 056005China Hebei International Joint Research Center for Computational Optical Imaging and Intelligent Sensing Hebei International Joint Research Center for Computational Optical Imaging and Intelligent SensingSchool of Mathematics and Physics Science and EngineeringHebei University of EngineeringHandan 056038China Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices Beijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Materials Science and Engineering Faculty of Materials Science and Chemical EngineeringNingbo UniversityNingbo 315211China Faculty of Physics Adam Mickiewicz University Poznan61-614 PoznanPoland Guangdong-Hong Kong Joint Laboratory for Water Security Engineering Research Center of Ministry of Education on Groundwater Pollution Control and RemediationCenter for Water ResearchAdvanced Institute of Natural SciencesBeijing Normal University at ZhuhaiZhuhai 519087China

Developing low-cost,efficient,and stable photocatalysts is one of the most promising methods for large-scale solar water *** a metal-free semiconductor material with suitable band gap,graphitic carbon nitride(g-C_(3)N_(4))has attracted attention in the field of photocatalysis,which is mainly attributed to its fascinating physicochemical and photoelectronic ***,several inherent limitations and shortcomings—involving high recombination rate of photocarriers,insufficient reaction kinetics,and optical absorption—impede the practical applicability of g-C_(3)N_(4).As an effective strategy,vacancy defect engineering has been widely used for breaking through the current limitations,considering its ability to optimize the electronic structure and surface morphology of g-C_(3)N_(4) to obtain the desired photocatalytic *** review summarizes the recent progress of vacancy defect engineered g-C_(3)N_(4) for solar water *** fundamentals of solar water splitting with g-C_(3)N_(4) are discussed *** then focus on the fabrication strategies and effect of vacancy generated in g-C_(3)N_(4).The advances of vacancy-modified g-C_(3)N_(4) photocatalysts toward solar water splitting are discussed ***,the current challenges and future opportunities of vacancy-modified g-C_(3)N_(4) are *** review aims to provide a theoretical basis and guidance for future research on the design and development of highly efficient defective g-C_(3)N_(4).

关键词： g-C_(3)N_(4) vacancy defect water splitting photocatalyst charge carrier

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Dissociation of singlet excitons dominates photocurrent improvement in high-efficiency non-fullerene organic solar cells

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Nano Research Energy 2024年第1期3卷 30-37页

作者： Qicong Li shizhong yue Zhitao Huang Chao Li Jiaqian Sun Keqian Dong Zhijie Wang Kong Liu Shengchun Qu Yong Lei Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China China Electronics Standardization Institution Beijing 100007China Fachgebiet Angewandte Nanophysik Institut für Physik&IMN MacroNanoTechnische Universität IlmenauIlmenau 98693Germany

In organic solar cells,the singlet and triplet excitons dissociate into free charge carriers with different mechanisms due to their opposite spin ***,the ratio of the singlet and triplet excitons directly affects the *** methods were used to optimize the performance of the low-efficiency solar cell by improving the ratio of triplet excitons,which shows a long diffusion *** we observed that in high-efficiency systems,the proportion of singlet excitons under linearly polarized light excitation is higher than that of circularly polarized *** the singlet charge transfer state has lower binding energy than the triplet state,it makes a significant contribution to the charge carrier generation and enhancement of the ***,the positive magnetic field effect reflects that singlet excitons dissociation plays a major role in the photocurrent,which is opposite to the case of low-efficiency devices where triplet excitons dominate the photocurrent.

关键词： polarized light organic solar cell high efficiency singlet/triplet exciton

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Insights into the influence of work functions of cathodes on efficiencies of perovskite solar cells

Insights into the influence of work functions of cathodes on...

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第四届新型太阳能电池学术研讨会

作者： shizhong yue Kuankuan Ren Muhammad Azam Zhijie Wang Shengchun Qu Key Laboratory of Semiconductor Materials Science Institute of Semiconductors Chinese Academy of Sciences

Though various efforts on modification of the electrodes are still undertaken to improve the efficiency of perovskite solar cells, attributing to the large scope of these methods, it is of significance to unveil the working principle ***, we construct inverted perovskite solar cells based on ITO/PEDOT:PSS/CHNHPbI/PCBM/buffer metal/*** choosing different buffer metals to tune work function of the cathode, contact nature of the active layer with the cathode could be well *** comparison with device using Au/Al as the electrode that shows an unfavorable band bending for conducting the excited electrons to the cathode, the one with Ca/Al presents a dramatically improved efficiency over 17.1%, ascribing to the favorable band bending at the interface of the cathode with the active *** for tuning the band bending and the according charge transfer mechanism are given in a systematic ***, a general guideline for constructing perovskite photovoltaic devices efficiently is provided.

关键词： Perovskite solar cells work function buffer metal band bending

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Submicrometer optical frequency combs based on SPPs metallic multi-ring resonators

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Photonics Research 2023年第12期11卷 2105-2112页

作者： ZHITAO HUANG FANGYUAN MA KEQIAN DONG shizhong yue CHAO LI YULIN WU JUNHUI HUANG XU HAN JIAQIAN SUN ZHAOFENG LI KONG LIU ZHIJIE WANG YONG LEI SHENGCHUN QU ZHANGUO WANG Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Integrated Circuits and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of TechnologyBeijing 100081China Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Fachgebiet Angewandte Nanophysik Institut für Physik&IMN MacroNanoTechnische UniversitätIlmenauIlmenau 98693Germany

Optical frequency combs(OFCs)have great potential in communications,especially in dense wavelength-division ***,the size of traditional OFCs based on conventional optical microcavities or dispersion fibers is at least tens of micrometers,far larger than that of nanoscale electronic ***,reducing the size of OFCs to match electronic chips is of ***,for the first time to our knowledge,we introduce surface plasmon polaritons(SPPs)to the construction of OFCs to realize a miniature *** thickness of our device is reduced below 1μ*** the presence of SPPs may induce ohmic and scattering loss,the threshold of the device is obtained as 9μW,comparable to the conventional ***,the response time is 13.2 ps,much faster than the optical *** work provides a feasible strategy for the miniaturization of OFCs.

关键词： metallic faster feasible

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半导体光刻技术及设备的发展趋势

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半导体技术 2008年第3期33卷 193-196页

作者：姚达刘欣岳世忠中国电子科技集团公司第四十七研究所沈阳110032 中国人民解放军91550部队辽宁大连116000 北京大学软件与微电子学研究院北京100871

随着芯片集成度的不断提高、器件尺寸的不断缩小,光刻技术和光刻设备发生着显著变化。通过对目前国内外光刻设备生产厂商对下一代光刻技术的开发及目前已经应用到先进生产线上的光刻技术及设备进行了对比研究,对光刻技术和光刻设备的发... 详细信息

随着芯片集成度的不断提高、器件尺寸的不断缩小,光刻技术和光刻设备发生着显著变化。通过对目前国内外光刻设备生产厂商对下一代光刻技术的开发及目前已经应用到先进生产线上的光刻技术及设备进行了对比研究,对光刻技术和光刻设备的发展趋势进行了介绍,并对我国今后半导体光刻技术及设备的发展提出了合理化建议。

关键词：光刻光刻机分辨率掩模焦深曝光

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浅议高校会计课程实践教学的质量控制

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卫生职业教育 2010年第21期28卷 48-49页

作者：岳世忠甘肃政法学院管理学院

1会计课程实践教学的现状在目前的会计课程实践教学中，存在着不可忽视的问题。一是会计模拟实习室设施和条件与单位相差甚远。二是模拟实习资料仿而不真，与实务存在较大差距。三是实习过程中学生应遵循的行为规范不健全，未将走进实... 详细信息

1会计课程实践教学的现状在目前的会计课程实践教学中，存在着不可忽视的问题。一是会计模拟实习室设施和条件与单位相差甚远。二是模拟实习资料仿而不真，与实务存在较大差距。三是实习过程中学生应遵循的行为规范不健全，未将走进实习室视为到单位上班；

关键词：会计课程实践教学质量控制

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W对第三代单晶高温合金抗氧化性能的影响

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稀有金属材料与工程 2017年第9期46卷 2493-2498页

作者：王效光李嘉荣史振学刘世忠岳晓岱北京航空材料研究院先进高温结构材料重点实验室北京100095

采用X射线衍射(XRD),扫描电镜(SEM)及能谱(EDS)等方法研究了不同W含量的3种试验单晶高温合金在1100℃的恒温氧化行为。结果表明:8%W合金氧化增重最大,6%与7%W的增重量相当,3种合金氧化动力学曲线近似遵从抛物线规律。试验合金氧化100 h... 详细信息

采用X射线衍射(XRD),扫描电镜(SEM)及能谱(EDS)等方法研究了不同W含量的3种试验单晶高温合金在1100℃的恒温氧化行为。结果表明:8%W合金氧化增重最大,6%与7%W的增重量相当,3种合金氧化动力学曲线近似遵从抛物线规律。试验合金氧化100 h后氧化膜剥落严重,8%W含量试验合金表面氧化膜剥落较6%和7%W合金严重,氧化膜由3层构成:最外层主要为(Ni,Co)O;中间层主要为氧化物和尖晶石相;最内层是连续的A1_2O_3层。在合金基体形成了γ'贫化层。在本合金体系下,随W元素含量变化,改变了试验合金1100℃氧化机制,在合金设计时,兼顾合金高温强度与抗氧化性能,应选择W含量不超过7%为宜。

关键词：第三代单晶高温合金抗氧化性能钨

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