检索结果-南通市图书馆

Journal of Rare Earths 2021年第2期39卷 113-120页

作者： Xiangjie Tang Qi Liu chuangyu wei Xuehui Lv Zhicheng Jin Yanli Chen Jianzhuang Jiang School of Materials Science and Engineering College of ScienceChina University of Petroleum(East China)Qingdao 266580China Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of ChemistryUniversity of Science and Technology BeijingBeijing 100083China

In recent years,sandwich-type rare earth tetrapyrrole derivatives,have attracted more and more attention as material for conductimetric *** have not only great chemical stability and processability,but also flexible molecular structure,which is a key to adjustable semiconductor *** this mini review,we focus mainly on the development of tetrapyrrolato-rare earth sandwich-type complexes as the semiconducting active layer in the gas sensors published in the last ten years(2010-2020).The main part includes two *** the single component gas sensing of sandwich rare earth tetrapyrrole complexes,we describe the influence factors of the single-component semiconducting active layer on the sensing performance of tetrapyrrolato-rare earth sandwich-type complexes,including substituents,central metals and π-conjugate *** the multi-component gas sensors,the synergistic effect between tetrapyrrolato-rare earth sandwich-type complex and other materials on improving sensitivity and conductivity has been discussed briefly.

关键词： Sandwich-type rare earth tetrapyrrole complex Phthalocyanine Gas sensor Rare earths

In situ construction of Co/N/C-based heterojunction on biomass-derived hierarchical porous carbon with stable active sites using a Co-N protective strategy for high-efficiency ORR,OER and HER trifunctional electrocatalysts

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2021年第3期30卷 626-638页

作者： Xuehui Lv Zuoxu Xiao Haoyuan Wang Xinlong Wang Lulu Shan Fuling Wang chuangyu wei Xiangjie Tang Yanli Chen College of Science School of Materials Science and EngineeringChina University of Petroleum(East China)Qingdao 266580ShandongChina

The facile designs and fabrication of noble metal-free electrocatalysts are highly required to achieve multifunctional catalytic activity with excellent stability in Zn-air batteries,fuel cells and water splitting ***,a heterostructure engineering is applied to construct the high performance Co,Ncontaining carbon-based multifunctional electrocatalysts with the feature of isotype(i.e.n-n type Co_(2)N_(0.67)-BHPC)and anisotype(i.e.p-n type Co_(2)O_(3)-BHPC)heterojunctions for ORR,OER and *** nn type Co_(2)N_(0.67)-BHPC,in which biomass(***)-derived hierarchical porous carbon(BHPC)incorporated with nonstoichiometric active species Co_(2)N_(0.67),is fabricated by using an in situ protective strategy of macrocyclic central Co-N_(4) from CoTPP(5,10,15,20-tetrakis(phenyl)porphyrinato cobalt)precursor through the intermolecularπ-πinteractions between CoTPP and its metal-free analogue H_(2) ***,an unprotected strategy of macrocyclic central Co-N_(4) from CoTPP can afford the anisotype Co_(2)O_(3)-BHPC p-n *** as-prepared n-n type Co_(2)N_(0.67)-BHPC heterojunction exhibited a higher density of Co-based active sites with outstanding stability and more efficient charge transfer at the isotype heterojunction interface in comparison with p-n type Co_(2)O_(3)-BHPC ***,for ORR,Co_(2)N_(0.67)-BHPC exhibits the more positive onset and half-wave potentials of 0.93 and 0.86 V ***,respectively,superior to those of the commercial 20 wt%Pt/C and most of Cobased catalysts reported so *** drive a current density of 10 mA cm^(-2),Co_(2)N_(0.67)-BHPC also shows the lower overpotentials of 0.34 and 0.21 V *** for OER and HER,***,the Zn-air battery equipped with Co_(2)N_(0.67)-BHPC displays higher maximum power density(109 mW cm^(-2))and charge-discharge cycle ***,the anisotype heterojunction Co_(2)O_(3)-BHPC as trifunctional electrocatalyst reveals evidently photoelectroc

关键词： Anisotype heterojunction Isotype heterojunction Multifunctional catalyst Biomass-derived Prophyrin

基于乙硫基取代的三层酞菁铕二聚体修饰ITO电极构筑电化学多巴胺和尿酸传感器

在线全文

学校读者我要写书评

暂无评论

高等学校化学学报 2022年第1期43卷 103-110页

作者：魏闯宇陈艳丽姜建壮中国石油大学(华东)理学院材料科学与工程学院青岛266580 北京科技大学化学系功能分子与晶态材料科学与应用北京市重点实验室北京100083

通过在水平和垂直两个方向上来扩展酞菁配合物的共轭结构,合成了三明治三层酞菁铕二聚体配合物[Pc(SC_(2)H_(5))_(8)]_(2)Eu_(2)[BiPc(SC_(2)H_(5))_(12)]Eu_(2)[Pc(SC_(2)H_(5))_(8)]_(2),使用Quasi-Langmuir-Shäfer(QLS)方法将配合物薄膜修饰在氧化铟锡导电玻璃(ITO)电极表面,利用多种谱学手段对配合物分子在薄膜内的排列进行表征,发现分子采取J聚集模式Edge-on排列在ITO电极表面,该薄膜具有良好的半导体性质,导电率高达8.86×10^(−5)S/cm.将配合物薄膜修饰的ITO电极成功应用于多巴胺(DA)和尿酸(UA)的电化学灵敏检测,最低检测限分别达到1.35和1.64μmol/L,灵敏度分别达到110和186.5 mA·μL·mol^(−1)·cm^(−2).

关键词：三明治型酞菁稀土配合物多巴胺尿酸电化学传感器

维普期刊数据库博看期刊

基于分子识别功能的铁卟啉/杯八芳烃/石墨烯三元复合材料的制备及其多巴胺电化学传感性能研究

在线全文

学校读者我要写书评

暂无评论

中国科学：化学 2022年第8期52卷 1408-1416页

作者：高鑫宇魏闯宇李希友陈艳丽中国石油大学(华东)材料科学与工程学院青岛266580 中国石油大学(华东)化学化工学院青岛266580

本文用界面自组装法将具有电催化活性的四联苯基铁卟啉(Fe TBPP)和具有特异分子识别功能的对叔丁基杯[8]芳烃(C[8]A)通过自组装法与高导电性的氧化石墨烯(GO)相结合,得到三元Fe TBPP/C[8]A/GO复合膜.对复合膜的结构表征发现,GO的共轭平... 详细信息

本文用界面自组装法将具有电催化活性的四联苯基铁卟啉(Fe TBPP)和具有特异分子识别功能的对叔丁基杯[8]芳烃(C[8]A)通过自组装法与高导电性的氧化石墨烯(GO)相结合,得到三元Fe TBPP/C[8]A/GO复合膜.对复合膜的结构表征发现,GO的共轭平面和亲水基团分别与Fe TBPP和C[8]A分子有π-π和氢键相互作用,使得两种分子在GO模板上呈现良好的分散性;与这两种分子的单组分膜相比,复合膜具有更加均匀的颗粒形貌和更高的导电性.电化学测试表明,响应电流与多巴胺(DA)浓度呈线性关系,检测范围宽至0.1~1000μM,灵敏度高达17.6μA/mmol,检出限低至25.6 n M.更重要的是,GO对Fe TBPP和C[8]A的锚定和分散使得复合电极对DA的检测具有稳定性、重现性和高选择性,并且该传感器可实现应用于人体尿液和血清样品中DA的高灵敏检测.

关键词：卟啉杯芳烃石墨烯多巴胺电化学传感

基于卟啉扩展共轭结构的三明治型卟啉酞菁铕配合物的自组装薄膜的氨气传感性质研究

在线全文

学校读者我要写书评

暂无评论

中国稀土学报 2023年第1期41卷 168-177页

作者：王鸿远魏闯宇高鑫宇于金石陈艳丽姜建壮中国石油大学(华东)材料科学与工程学院化学化工学院山东青岛266580 北京科技大学化学系功能分子与晶态材料科学与应用北京市重点实验室北京100083

有机半导体材料在气体传感领域具有广泛应用。本文通过扩展三明治型卟啉酞菁配合物中卟啉环的共轭结构,设计并合成了具有半导体性质的三明治型卟啉酞菁铕配合物,分别为[Pc(SC_(2)H_(5))_(8)]_(2)Eu[Por-phenyl](1),[Pc(SC_(2)H_(5))_(8)... 详细信息

有机半导体材料在气体传感领域具有广泛应用。本文通过扩展三明治型卟啉酞菁配合物中卟啉环的共轭结构,设计并合成了具有半导体性质的三明治型卟啉酞菁铕配合物,分别为[Pc(SC_(2)H_(5))_(8)]_(2)Eu[Por-phenyl](1),[Pc(SC_(2)H_(5))_(8)]_(2)Eu[Por-biphenyl](2)和[Pc(SC_(2)H_(5))_(8)]_(2)Eu[Porpyrenephenyl](3)。并使用操作简单、成本较低的QLS方法将配合物薄膜修饰在ITO电极表面,随着共轭结构从配合物1,2到3依次增大,其聚集体形貌颗粒尺寸减小,活性位点暴漏的越多,增大了与气体的相互作用。利用XRD和UV-vis和Polarized UV-vis等多种表征手段对配合物分子在薄膜内的排列方式进行表征,揭示配合物分子在ITO电极表面的聚集模式为H聚集。对三种配合物进行I-V测试,导电性依次为:3>2>1。将配合物薄膜修饰的ITO电极在室温下暴露于(0.5~2.5)ppm NH3气体浓度下进行测试,发现三种配合物对(0.5~2.5)ppm NH3都具有响应,灵敏度依次为:0.8%·ppm^(-1),1.0%·ppm^(-1)和2.0%·ppm^(-1)。结果表明材料共轭结构大,电导率高的[Pc(SC_(2)H_(5))_(8)]_(2)Eu[Por-pyrenephenyl](3)对NH3具有最高的灵敏度,最低检测限为0.12 ppm。本研究结果为分子设计并结合一种低成本的方法获得高性能的室温气体传感器提供了一种新的策略。

关键词：三明治型卟啉酞菁铕配合物氨气气体传感

Enhanced Microwave Absorption for High Filler Content Composite Molded from Polymer Coated Flaky Carbonyl Irons Modified by Silane Coupling Agents

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2023年第1期38卷 42-51页

作者：崔正明 MA Guoqing WANG Mengqi LUO chuangyu CHEN Zhihong MA Huiru LI Qifan 李维 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China School of Science Wuhan University of TechnologyWuhan 430070China Department of Chemistry School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China School of Physics and Electronic Science Hubei UniversityWuhan 430062China

A microwave absorbing sheet with a high complex permeability and a relatively low complex permittivity is obtained by molding of the densely coated flaky carbonyl iron particles(FCIPs)by styrenebutadiene-styrene block copolymer(SBS)in the assistance of coupling agent *** molding of the core-shell FCIPs without adding extra binder results in a large permeability due to the high filling ratio(55vol%)of ***,the permittivity is well suppressed by the dense insulate polymer shell on the FCIPs,avoiding the severe impedance mismatch problem of the high filler content microwave absorbing *** show that modifying the surface of FCIPs by proper amount of silane coupling agent is critical for the coating quality of the SBS shell,which is verified by resistivity and corrosion current density measurements,and can be interpreted by improved interfacial compatibility between the modified FCIPs and *** obtained microwave absorbing sheet shows a minimum reflection loss of-38.74 dB at 1.57 GHz and has an effective absorption bandwidth from 1.1 to 2.3 GHz at a relatively small thickness of 2 mm.

关键词： microwave absorber coating quality magnetic permeability permittivity low frequency

High Permeability in Broadband of Co-sputtered [Fe-Fe_(20)Ni_(80)/Cr]_(n) Multilayer Films

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 410-416页

作者：罗创钰 LIU Xing 王峰李维 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China College of Materials and Chemical Engineering Hezhou UniversityHezhou 542899China

To achieve high microwave permeability in wide-band for the micron-thick magnetic films,[Fe-Fe_(20)Ni_(80)/Cr]_(n) multilayer structure was proposed by co-sputtering Fe and FeNi to form the magnetic layers and Cr to form the *** multilayer structure contributes to the high permeability by reducing the coercivity and diminishing out-of-plane *** maximum imaginary permeability of[Fe-Fe_(20)Ni_(80)/Cr]_(n) multilayer film reaches a large value of 800 at 0.52 GHz even though its overall thickness exceeds 1μ***,the magnetic resonance frequency of the multilayer film can be modulated from 0.52 to 1.35 GHz by adjusting the sputtering power of Fe from 0 to 86 W,and its bandwidth for μ’’>200(Δf) is as large as 2.0 *** desirable broad Δf of magnetic permeability,which can be well fitted by the Landau-Lifshitz-Gilbert equations,is due to dual magnetic resonances originated from double magnetic phases of Fe and FeNi that are of different saturation *** micron-thick multilayer films with high permeability in extended waveband are promising candidate for electromagnetic noise suppression application.

关键词： magnetron sputtering multiple magnetic resonance high permeability electromagnetic noise suppression

生肌创愈膏联合微波照射在促进肛瘘术后创面愈合中的应用效果

在线全文

学校读者我要写书评

暂无评论

中国当代医药 2018年第27期25卷 48-50页

作者：吴云翔唐勇陈光华安明伟张磊昌江西中医药大学附属医院肛肠科江西南昌330006

目的探讨生肌创愈膏联合微波照射在促进肛瘘术后创面愈合中的应用价值。方法选取2014年5月～2018年1月于我院行肛瘘手术治疗的80例患者作为研究对象,采用随机数字表法分为对照组和观察组,每组各40例。对照组采用红油膏纱条联合微波照射... 详细信息

目的探讨生肌创愈膏联合微波照射在促进肛瘘术后创面愈合中的应用价值。方法选取2014年5月～2018年1月于我院行肛瘘手术治疗的80例患者作为研究对象,采用随机数字表法分为对照组和观察组,每组各40例。对照组采用红油膏纱条联合微波照射,观察组采用生肌创愈膏纱条联合微波照射治疗,治疗14 d后比较两组患者的创面渗液评分、创面疼痛评分、肛门功能评分、创面肉芽评分情况及临床疗效。结果两组患者治疗后的创面渗液评分、创面疼痛评分、肛门功能评分、创面肉芽评分均低于本组治疗前,差异有统计学意义(P<0.05);治疗后观察组的创面渗液评分、创面疼痛评分、肛门功能评分、创面肉芽评分均低于对照组(P<0.05);治疗后观察组的总有效率(97.50%)高于对照组(77.50%),差异有统计学意义(P<0.05)。结论生肌创愈膏联合微波照射可促进肛瘘术后创面愈合,值得推广。

关键词：肛瘘手术生肌创愈膏微波照射创面愈合肛门功能评分

在线全文

学校读者我要写书评

暂无评论

优质高产水稻创宇9号的选育及栽培技术

湖南农业科学 2018年第7期 16-18页

作者：刘泽民黄伟东周昆阳标仁李咏谊黎用朝李成钢湖南省水稻研究所湖南省农业科学院湖南长沙410125 长沙大禾科技开发中心湖南长沙410125

创宇9号是以黄华占作母本、中香1号作父本进行杂交,经长沙、海南两地经5年7代定向选择,于2012年育成。该品种即高产又优质,且综合抗性较强,加工品质好,耐储藏,适合在湖南省及其周边做中熟晚稻种植。2017年通过湖南省农作物品种审定委员... 详细信息

创宇9号是以黄华占作母本、中香1号作父本进行杂交,经长沙、海南两地经5年7代定向选择,于2012年育成。该品种即高产又优质,且综合抗性较强,加工品质好,耐储藏,适合在湖南省及其周边做中熟晚稻种植。2017年通过湖南省农作物品种审定委员会审定。介绍了创宇9号的选育经过与栽培要点。

关键词：创宇9号高产高出米率耐储藏优质稻选育