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时珍国医国药 2003年第9期14卷 571-572,573页

作者：刘朝霞邹坤三峡大学化学与生命科学学院湖北宜昌443003

综述了湖北省境内人参属药用植物的分布及特点、化学成分、以及其药用价值等。

关键词：湖北省人参属药用植物化学成分生物活性

Enhanced ethanol oxidation over pd nanop.r.icles supp.r.ed p.r.us graphene-doped MXene using polystyrene p.r.icles as sacrificial templates

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rare Metals 2022年第9期41卷 3170-3179页

作者： Yi-Zhe Chen Ming Zhou Yu-Fu Huang Yan-Yun Ma Luo-Yi Yan Xin-Wen Zhou Xin-Zhou Ma Xue-Ling zhao Cheng Chen juan Bai Dong-Hai Lin Shanghai Engineering research Center of Advanced Thermal Functional Materials Shanghai Key Laboratory of Engineering Materials Application and EvaluationSchool of Energy and MaterialsShanghai Polytechnic UniversityShanghai201209China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou215123China college of Biological and pharmaceutical sciences China Three Gorges UniversityYichang443002China School of Materials science and Hydrogen Energy Foshan UniversityFoshan528000China School of chemistry and physics Queensland University of TechnologyBrisbaneQLD4000Australia

Fabrication of sup.r.or catalytic p.r.ormance palladium-based catalysts with affordable cost is the key to develop direct ethanol fuel ***,pd-decorated three-dimensional(3D)p.r.us constructed from graphene oxide(GO)and MXene combining with polystyrene(pS)p.r.icles as sacrificial templates(pd/GO-MXene-pS)to elevate the catalytic p.r.ormance for ethanol oxidation was *** 3D p.r.us interconnected structure of pd/GO-MXene-pS was characterized by scanning electron microscope(SEM),transmission electron microscope(TEM)and Brunner−Emmet−Teller(BET).By optimizing the doping ratio of MXene to GO,the mass activity of pd/GO_(5)-MXene_(5)-pS(2944.0 mA·mg^(−1))was 3.0 times higher than that of commercial pd/C(950.4 mA·mg^(−1))toward ethanol oxidation in base ***,the rotating disk electrode(rDE)results demonstrated that pd/GO5-MXene5-pS had a faster kinetics of ethanol *** enhanced ethanol oxidation over pd/GO5-MXene5-pS could attribute to the excellent 3D interconnected p.r.us structure,large surface area,good conductivity and homogeneous pd *** work provided a new idea for creating 3D p.r.us MXene composite materials in electrocatalysis.

关键词： pd nanop.r.icles Ethanol oxidation Graphene MXene polystyrene(pS)template rotating disk electrode(rDE)

A 3D Ni_(8)-cluster-based MOF as a molecular electrocatalyst for alcohol oxidation in alkaline media

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Chinese Journal of Structural chemistry 2023年第2期42卷 5-8页

作者： Wei-juan Chen Tian-Yu Zhang Xue-Qian Wu Yong-Shuang Li Yunling Liu Ya-pan Wu zhao-Bo He Dong-Sheng Li college of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang443002China college of Electrical Engineering&New Energy China Three Gorges UniversityYichang443002China Hubei three gorges Laboratory Yichang443007China State Key Laboratory of Inorganic Synthesis and prep.r.tive chemistry College of ChemistryJilin UniversityChangchun130012China

*** DAFCs offer significant promise for compact electric devices through the consumption of liquid fuels as one of the renewable energy sources,with minimal environmental effects and prominent energy density[1-4].Beca... 详细信息

关键词： alcohol alkaline cluster

Synthesis and optical prop.r.ies of novel double p.r.vskite Ca_(2)MgTeO_(6):Dy^(3+),Na^(+) phosphors for white LEDs

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Journal of rare Earths 2021年第6期39卷 634-642,I0001页

作者： Junzhi Che Bin Deng Qinyang Song Jianxu Wang Tao Wang Shoucheng zhao ruijin Yu college of chemistry&pharmacy Northwest A&F UniversityYangling 712100China college of chemistry&Biology and Environmental Engineering Xiangnan UniversityChenzhou 423043China Hunan provincial Key Laboratory of Xiangnan rare-precious Metals Compounds research and Application Chenzhou 423043China Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials College of Materials and Chemical EngineeringChina Three Gorges UniversityYichang 443002China

Novel yellow-emitting phosphors of Dy^(3+)-doped double p.r.vskite Ca_(2)MgTeO_(6) were synthesized by using a conventional high-temp.r.ture solid-state *** phase p.r.ty,p.r.icle morphology,size distribution,elemental composition,luminescence prop.r.ies,and luminescence decay curves of the resulting products were then analyzed in *** Ca_(2)MgTeO_(6):Dy^(3+),Na^(+) phosphors show three emission peaks after near-ultraviolet excitation at 350 nm,which correspond to ^(4)F_(9/2)→^(6)H_(11/2),^(4)F_(9/2)→^(6)H_(13/2),and ^(4)F_(9/2)→^(6)H_(13/2) transitions,*** them,the strongest peak is observed at 573 *** best doping content of Dy^(3+)in Ca_(2)MgTeO_(6):xDy^(3+),xNa^(+) phosphors is x=5 mol%.The calculated critical distance of energy transfer between Dy^(3+) ions is 1.6 *** quenching is confirmed to be due to dipole-dipole interactions among Dy^(3+) *** phosphors show excellent thermal stability with high activation energy(0.27 eV).The Commission Internationale de l’Eclairage(CIE) chromaticity coordinates of the Ca_(2)MgTeO_(6) Dy^(3+),Na^(+) phosphors are located in the yellow *** light-emitting diodes(w-LEDs) were fabricated with a high color rendering index(r_(a)) of 88 and a good correlated color temp.r.ture(CCT) of 5440 *** observed prop.r.ies indicate that Ca_(2)MgTeO_(6):Dy^(3+),Na^(+) phosphors have potential applications in display and photonic devices.

关键词： Luminescence Double p.r.vskite Ca_(2)MgTeO_(6) phosphor rare earths

photoluminescence prop.r.ies and thermal stability of Eu^(3+)-activated La_(7)Ta_(3)W_(4)O_(30) red-emitting phosphors for near-UV-excited w-LEDs

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Journal of rare Earths 2021年第8期39卷 905-912页

作者： Yu ren Bin Deng Ting Liang Shuang Shu Junlan Guo Shoucheng zhao ruijin Yu college of chemistry&pharmacy Northwest A&F UniversityYangling 712100China college of chemistry&Biology and Environmental Engineering Xiangnan UniversityChenzhou 423043China Hunan provincial Key Laboratory o/Xiangnan rare-precious Metals Compounds research and Application Xiangtan UniversityChenzhou 423043China college of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China

Novel trivalent europium(Eu^(3+))-activated La_(7)Ta_(3)W_(4)O_(30):xEu^(3+)(x=0.5 mol%-40 mol%) red-emitting phosphors were synthesized by means of a high-temp.r.ture solid-state *** structure,morphology,photoluminescence,thermal-stability prop.r.ies,lifetime,and color-rendering of the prep.r.d phosphors were investigated in *** La_(7)Ta_(3)W_(4)O_(30):Eu^(3+) phosphors show five emission peaks under near-ultraviolet(n-UV) at 397 nm,and these peaks are ascribed to the transitions of ^(5)D0-^(7)Fj(j=0,1,2,3 and 4) by Eu^(3+) *** optimal doping concentration of Eu^(3+) is 20 mol%,and the critical distance of the energy transfer between the Eu^(3+)ions was calculated to be 1.768 *** quenching temp.r.ture(T_(0.5)) of La_(7)Ta_(3)W_(4)O_(30):20 mol%Eu^(3+) is about 440 *** quantum yield(QY) was measured to be 85.85%.The fabricated white-light-emitting diodes(w-LEDs) possess high color-rendering index(r_(a)) of 90,and high correlated color temp.r.ture(CCT) of 5810 K,*** Commission Internationale de L’Eclairage(CIE) coordinates are(0.311,0.322).Therefore,the prep.r.d phosphor has a promising application for w-LEDs.

关键词： Luminescence phosphor Tungstate La_(7)Ta_(3)W_(4)O_(30) rare earths

three-Dimensional Self-assembled Hairball-Like VS4 as High-Capacity Anodes for Sodium-Ion Batteries

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Nano-Micro Letters 2020年第3期12卷 142-154页

作者： Shuangshuang Ding Bingxin Zhou Changmiao Chen zhao Huang pengchao Li Shuangyin Wang Guozhong Cao Ming Zhang Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Hunan Provincial Key Laboratory of Low‑Dimensional Structural Physics and DevicesSchool of Physics and ElectronicsHunan UniversityChangsha 410082People’s Republic of China college of Electrical Engineering and New Energy Three Gorges UniversityYichang 443002HubeiPeople’s Republic of China State Key Laboratory of Chemo/Biosensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082People’s Republic of China Dep.r.ment of Materials science and Engineering University of WashingtonSeattleWA 98195USA

Sodium-ion batteries(SIBs)are considered to be attractive candidates for large-scale energy storage systems because of their rich earth abundance and consistent ***,there are still challenges in developing desirable anode materials that can accommodate rapid and stable insertion/extraction of Na+and can exhibit excellent electrochemical ***,the self-assembled hairball-like VS4 as anodes of SIBs exhibits high discharge capacity(660 and 589 mAh g−1 at 1 and 3 A g−1,respectively)and excellent rate prop.r.y(about 100%retention at 10 and 20 A g−1 after 1000 cycles)at room ***,the VS4 can also exhibit 591 mAh g−1 at 1 A g−1 after 600 cycles at 0°*** unlike traditional mechanism of VS4 for Na+storage was proposed according to the dates of ex situ characterization,cyclic voltammetry,and electrochemical kinetic *** capacities of the final stabilization stage are provided by the reactions of reversible transformation between Na2S and S,which were considered the reaction mechanisms of Na–S *** work can provide a basis for the synthesis and application of sulfur-rich compounds in fields of batteries,semiconductor devices,and catalysts.

关键词： VS4 Sodium-ion batteries Low-temp.r.ture batteries reaction kinetics Na+storage mechanism

Visible light-induced degradation of organic pollutants using Fe(II) supp.r.ed on silica gel as an effective catalyst

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Chinese science Bulletin 2008年第10期53卷 1497-1502页

作者： zhao Chao HUANG Yingping FANG YanFen JIANG Lirong LIU LiMing King Tong Lau Center for Ecologic and Environment science China Three Gorges University Yichang 443002 China college of chemistry Central China Normal University Wuhan 430070 China School of Chemical -sciences National Centre for Sensor Research Dublin City University Dublin Ireland

Silica gel-supp.r.ed Fe(II) (SiOFe) was prep.r.d and used for heterogeneous degradation of sulforho-damine B (SrB) and 2,4-dichlorophenol (DCp) under visible irradiation (λ > 420 nm) as an effective catalyst. UVvisible spectra, and infrared Spectrophotometry (Ir), fluorescence, total organic carbon (TOC) and electron spin resonance (ESr) measurements were employed to analyze the photoreaction products. The results showed that SrB could be efficiently degraded by SiOFe/H2O2 system under visible irradiation with 100% decolorization and 72.3% TOC removal after 180 min illumination. The results of ESr and fluorescence measurements indicated that the oxidative process was predominated mainly by the hydroxyl radical (·OH) generated in the system.

关键词：二氧化硅凝胶剂异质性光催化剂辐射度

Biocatalyzed cross-coupling of sinomenine and 1,2-dihydroxybenzene by Coriolus unicolor

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Chinese Chemical Letters 2012年第3期23卷 321-324页

作者： Zhang Shuang Deng Dan zhao Yi Hu Jian Xin Li Kun Zou Jun Zhi Wang Hubei Key Laboratory of Natural products research and Development College of Chemistry and Life ScienceChina Three Gorges UniversityYichang 443002China Institute of Chemical Biology and Drug Innovation School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China School of chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing University of TechnologyNanjing 210009China

Sinomenine is a clinically available drug for the treatment of rheumatoid arthritis（rA）.In a continuous research aiming at discovery of sinomenine derivates with better bioactivity,a cross-coupling reaction of sinomenine and 1,2-dihydroxybenzene catalyzed by a fungus Coriolus unicolor afforded an unique C-C cross-coupled compound 2,together with（S）-disinomenine and （r）-*** structure of 2 was elucidated by MS and NMr *** 2 was further assayed for the inhibitory activity on IL-6 overproduction in SW982 cells and exhibited a much more potent activity on IL-6（96%inhibition） comp.r.d with those of（S）-disinomenine and sinomenine（17%and 12%inhibition,respectively）.

关键词： Sinomenine 1 2-Dihydroxybenzene Cross-coupling Coriolus unicolor IL-6

梯级水库运行对沉积物氮形态时空分布的影响——澜沧江和怒江对比研究

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中国环境科学 2023年第5期43卷 2354-2363页

作者：王从锋刘毅吴凡郭小娟赵萍杨正健刘德富三峡大学水利与环境学院湖北宜昌443002 湖北工业大学土木与建筑学院河湖生态修复与藻类利用湖北省重点实验室湖北武汉430068

为探究梯级水库运行对河流沉积物氮形态时空分布的影响,分别在枯水期和汛期对澜沧江和怒江沿程表层沉积物进行跟踪监测,并利用分级连续浸取分离法得到了离子可交换态氮(IEF-N),弱酸可浸取态氮(WAEF-N),强碱可浸取态氮(SAEF-N)和强氧化... 详细信息

为探究梯级水库运行对河流沉积物氮形态时空分布的影响,分别在枯水期和汛期对澜沧江和怒江沿程表层沉积物进行跟踪监测,并利用分级连续浸取分离法得到了离子可交换态氮(IEF-N),弱酸可浸取态氮(WAEF-N),强碱可浸取态氮(SAEF-N)和强氧化剂可浸取态氮(SOEF-N)等四种沉积物氮形态.结果表明:(1)怒江和澜沧江自然河流段可转化态氮(TTN)含量略低于水库段,沿程分布含量范围512.2~1548.5mg/L,同时期4种可转化态氮形态分布规律基本一致,枯水期SOEF-N>WAEF-N>SAEF-N>IEF-N,含量范围分别为486.6~1424.8,3.3~83.1,1.4~88.8和1.2~10.7mg/kg;汛期WAEF-N>SOEF-N>SAEF-N>IEF-N,含量范围分别为360.7~755.7,42.8~656.2,6.8~394.3和35.8~153.6mg/kg;(2)梯级水库运行导致有机质富集,颗粒物粒径变小,对WAEF-N的释放有抑制作用;梯级水库运行导致水库段沉积物粒径变小,而SOEF-N主要分布在细颗粒中,致使沉积物的矿化作用受到抑制,有机氮含量得到累积;水库段由于有机质含量的累积,IEF-N含量逐步升高;自然河道段表层沉积物基本以氧化环境为主,沉积物中SAEF-N更易释放,而在水库段基本处在弱还原或者还原环境下,导致SAEF-N累积在沉积物.

关键词：沉积物粒径自然河流梯级水库澜沧江