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Supercritical CO_(2)-Tailored 2D Oxygen-doped Amorphous Carbon Nitride for Enhanced Photocatalytic Activity

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Energy & Environmental Materials 2022年第3期5卷 912-917页

作者： Lina Du Qingyong Tian Xiaoli Zheng Wenjing Guo Wei Liu Yannan zhou Feng shi qun Xu College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institutes of Advanced Technology Zhengzhou UniversityZhengzhou 450052China

Simultaneously adjusting the surface,crystallographic and electronic structures of nanomaterials provide a new avenue for rational design of advanced photocatalyst yet it is *** this work,a surface and structural engineering strategy is developed to simultaneously realize the 2D amorphous structure and oxygen(O)-doping in graphitic carbon nitride(g–C_(3)N_(4))via the assistance of supercritical carbon dioxide(SCCO_(2)).The 2D O-doped amorphous g-C_(3)N_(4)nanosheets display greatly enhanced photocatalytic CO_(2)reduction and methylene blue degradation *** synthesis method as well as the mechanism of the enhanced photocatalytic activity was investigated,wherein the introduction of 2D amorphous structure and O dopant in the g-C_(3)N_(4)contributes to the increased surface area,abundant active sites,wider visible-light absorption range and efficient charge separation property,and thus the outstanding photocatalytic activities can be *** photocatalytic CH_(4)evolution rate and MB degradation rete are 5.1 and 7.0 times enhancement over bulk crystalline g-C_(3)N_(4),*** work presents a great promising way for designing and developing advanced photocatalysts.

关键词： amorphous graphitic carbon nitride oxygen-doping photocatalytic activity supercritical carbon dioxide

Poly(2-acetoxyethyl methacrylate)/polystyrene latex interpenetrating polymer networks with well-defined phase-separated structure

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Chinese Chemical Letters 2011年第12期22卷 1505-1508页

作者： Tao Wang Shan shi Li Na Bian Li Min zhou Li qun Zhao Key Laboratory of Applied Technology of Polymer Materials College of Materials Science and Engineering Shenyang University of Chemical Technology Shenyang 110142 China Department of Production Science and Technology Faculty of Engineering Gunma University Ota 373-0057 Japan

A series of poly（2-acetoxyethyl methacrylate）/polystyrene（PAEMA/PS） latex interpenetrating polymer networks（LIPNs） were prepared by seeded soap-free emulsion polymerization of styrene on the crosslinked PAEMA seed particles using an oil-soluble *** PAEMA/PS LIPNs showed a well-defined phase-separated structure with PS phase dispersing in continuous PAEMA *** domain size of PS phase was found to depend on the crosslinking degree of PAEMA seed particles and the amount of second-stage styrene monomer.

关键词： Phase-separation IPN Seeded soap-free emulsion polymerization Crosslinking Particle

Recollections of the COVID-19 Epidemiological Intelligence Task Force in China CDC, July 2021 to March 2022

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China CDC weekly 2022年第37期4卷 835-840页

作者： Lei zhou Guoqing shi Hao Li Yanping Zhang qun Li Chinese Center for Disease Control and Prevention BeijingChina

INTRODUCTION The coronavirus disease 2019(COVID-19)pandemic has been going on for nearly three years since the coronavirus outbreak was first reported(1–3).China managed to control the unexpected first wave in Wuhan City,Hubei Province by using strictly compulsory measures(4–5).Later,to prevent imported infections and control subsequent local transmission,China adjusted and implemented a proactive strategy widely known as the Dynamic COVID-Zero Strategy(6–7).

关键词： COV measures collection

Canonical Quantum Teleportation of Two-Particle Arbitrary State

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Communications in Theoretical Physics 2005年第2X期44卷 353-355页

作者： HAO Xiang ZHU shi-qun School of Physical Science and Technology Suzhou University Suzhou 215006 China

The canonical quantum teleportation of two-particle arbitrary state is realized by means of phase operator and number operator. The maximally entangled eigenstates between the difference of phase operators and the sum of number operators are considered as the quantum channels. In contrast to the standard quantum teleportation, the different unitary local operation of canonical teleportation can be simplified by a general expression.

关键词： canonical teleportation phase operator number operator general expression

Attack-Induced Entanglement of Noninteracting Fermi Gas

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Communications in Theoretical Physics 2008年第6期49卷 1439-1442页

作者： REN Jie ZHU shi-qun School of Physical Science and Technology Suzhou University Suzhou 215006 China

The bipartite entanglement in Fermi gas without interaction is investigated when there ace three fermions in the system. The negativity and the yon Neumann entropy are employed to measure the entanglement of the system. The position of the third fermion can affect the entanglement between the first and the second fermions. The entanglement can be enhanced or suppressed when the third fermion changes its position. When the two fermions are at the same position or when their distance is more than 2.0/kF, the third fermion cannot affect them.

关键词： Fermi gas entanglement entropy

Multipartite Entanglement in Heisenberg Model

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Communications in Theoretical Physics 2008年第6期49卷 1449-1452页

作者： REN Jie ZHU shi-qun School of Physical Science and Technology Suzhou University Suzhou 215006 China

The effects of anisotropy and magnetic field on multipartite entanglement of ground state in Heisenberg XY model are investigated. The multipartite entanglement increases as a function of the inverse strength of the external field when the degree of anisotropy is finite. There are two peaks when the degree of anisotropy is γ=±1. When the degree of anisotropy increases further, the multipartite entanglement will decrease and tend to a constant. The threshold of the inverse strength of the external field for generating multipartite entanglement generally decreases with the increasing of qubits.

关键词： multipartite entanglement ground state Heisenberg model

Ir(Ⅲ)-based Ratiometric Hypoxic Probe for Cell Imaging

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Chinese Journal of Polymer Science 2023年第5期41卷 794-801,I0011页

作者： shi-Lu Ji Hua-Min Lan Sen-Sen zhou Xiao-Ke Zhang Wei-Zhi Chen Xi-qun Jiang Department of Polymer Science&Engineering College of Chemistry&Chemical EngineeringNanjing UniversityNanjing 210093China College of Science Nanjing Forestry UniversityNanjing 210037China

Two new ratiometric hypoxia probes(Ir-C343 and Ir-GFP)are synthesized by covalently incorporating florescent internal standard molecules coumarin 343(C343)and green fluorescent protein(GFP)into bis[1-(9,9-dimethyl-9H-fluoren-2-yl)-isoquinoline](succinylacetone)Ir(Ⅲ)(Ir-fliq),*** connecting with internal standard molecules,the Ir-fliq moiety still exhibits high sensitivity to oxygen concentration,while the fluorescence intensity of the internal standard remains relatively constant under different oxygen *** a result,a ratiometric response is realized that is only related to oxygen *** addition,Ir-GFP shows more promising applications in the ratiometric hypoxia imaging of cells due to its long excitation wavelength,good water solubility,high biocompatibility,and low relative fluorescence intensity compared with the phosphorescent emitter Ir-fliq.

关键词： Hypoxia probe Ratiometric probe Hypoxic response Cell imaging

L^(p)-solutions of Multi-dimensional Oblique Reflected BSDEs and Optimal Switching Problem on Finite or Infinite Time Horizon

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Acta Mathematicae Applicatae Sinica 2024年第4期40卷 1127-1146页

作者： Xue-jun shi qun FENG Long JIANG School of Mathematics and Statistics Shandong Normal UniversityJinan 250358China School of Management Science and Engineering University of JinanJinan 250002China School of Mathematics China University of Mining and TechnologyXuzhou 221116China

In this paper,we study mulit-dimensional oblique reflected backward stochastic differential equations(RBSDEs)in a more general framework over finite or infinite time horizon,corresponding to the pricing problem for a ... 详细信息

关键词： multi-dimensional oblique reflected BSDE optimal switching and stopping problem finite or infinite time horizon uniformly continuous generators

SYNTHESIS OF CROSS-CONJUGATED(p-PHENYLENE)S-POLY(p-PHENYLENEVINYLENE)S HYBRIDS WITH LOW CONTENT OF STRUCTURAL DEFECTS

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Chinese Journal of Polymer Science 2007年第2期25卷 171-179页

作者： shi-jun Zheng qun Xu Shao-kui Cao College of the Material Science and Engineertng Zhengzhou University Zhengzhou 450052 China

The novel shish-kebab-type liquid crystalline cross-conjugated （p-phenylene）s-poly（p-phenylenevinylene）s hybrid was synthesized through Gilch polymerization. Their structures and properties were characterized by NMR, GPC, DSC, X-ray diffraction and polarizing optical microscope （POM）. ^1H-NMR investigation of the polymers indicates that the shish-kebab-structure has a strong ability to suppress the structural defects in the polymers. The polymers are enantiotropic liquid crystals. The melting point （Tm） of the polymers decreases when the length of the alkoxy tails of the mesogenic units increases. The mesophase was identified by X-ray diffraction method. They showed not only a smectic LC phase, but also a strong green fluorescence in chloroform. The maximum absorption band of the ＂kebabs＂ of the two, 5-bis（4＇- alkoxyphenyl）benzene at 280 nm did not appear in absorption spectra of the polymers. The same phenomena were also observed in the fluorescence spectra. These results imply that the polymers have formed a cross-conjugated uniform structure and achieved an extended n-conjugation polymer.

关键词： Gilch polymerization Conjugated polymer Liquid crystal shish-kebab Fluorescence.