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An ultra-highly active nanozyme of Fe,N co-doped ultrathin hollow carbon framework for antibacterial application

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Chinese Chemical Letters 2023年第3期34卷 388-391页

作者： Jinyu Hao Cui Zhang Chenxi Feng Qian Wang Zhong-Yi Liu Yan Li jianshuai mu En-Cui Yang Yan Wang College of Chemistry Tianjin Key Laboratory of Structure and Performance for Functional MoleculesTianjin Normal UniversityTianjin 300387China School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China School of food and Bioengineering Xuzhou University of TechnologyXuzhou 221018China

In recent years, nanozymes have received more and more attention, but the low activity limits the development of nanozymes. Therefore, the design and development of efficient nanozymes is still a major challenge for researchers. Herein, the Fe,N co-doped ultrathin hollow carbon framework(Fe,N-UHCF) exhibit ultra-high peroxidase-like activity. The specific activity of Fe,N-UHCF nanozyme is as high as 36.6 U/mg,which is much higher than almost all of other reported nanozymes. In practical applications, the Fe,N-UHCF show good antibacterial effects.

关键词： Peroxidase-like Nanozyme Ultra-highly active Specific activity Antibacterial

A highly efficient Mo2C hydrogen-evolution electrocatalyst with 3D hierarchical nano structure

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A highly efficient Mo2C hydrogen-evolution electrocatalyst w...

中国化学会第八届全国配位化学会议

作者： Jing Li jianshuai mu En-Cui Yang Xiao-Jun Zhao College of Chemistry Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry Ministry of Education Tianjin Key Laboratory of Structure and Performance for Functional Molecules Tianjin Normal University

The development of non-precious metal based electrocatalysts for hydrogen evolution reaction(HER)has received more and more attention over recent years owing to the energy andenvironment issues,and Mo based materials have been explored as a promising *** this work,MoN nanoparticles and MoC with 3D hierarchical nanostructures assembled by interconnected nanoflakes were synthesized facilely via one-step high-temperature pyrolysis by adjusting the mass ratio of urea and ammonium *** MoC 3D hierarchical nanomaterials consisted of unltrasmall nanoparticles encapsulated by carbon,which owned high specific surface *** all exhibited efficient HER activity,and the MoC electrocatalyst with the mass ratio of 160(MoC-160)showed the best HER activity,with a small overpotential of 90 mVto reach 10 mA cm and a small Tafel slope of 50 mV dec,which was one of the most active reported MoC-based electrocatalysts.

关键词： Mo2C 3D hierarchical nanostructures hydrogen evolution reaction nonnoblemetalelectrocatalyst

来源： cnki会议评论

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神经红蛋白突变体H64V与叠氮离子的作用

高等学校化学学报 2018年第3期39卷 476-481页

作者：高朝辉李海丽王蕾邱章磊穆建帅李连之聊城大学化学化工学院聊城252059

将64位组氨酸(His64)突变为缬氨酸(Val),构建了神经红蛋白(Ngb)突变体H64V基因并进行了蛋白的表达纯化,突变使Ngb的血红素Fe由六配位结构变成五配位结构.利用光谱法研究了突变体H64V与叠氮离子(N_3^-)的相互作用.紫外-可见吸收光谱表明,... 详细信息

将64位组氨酸(His64)突变为缬氨酸(Val),构建了神经红蛋白(Ngb)突变体H64V基因并进行了蛋白的表达纯化,突变使Ngb的血红素Fe由六配位结构变成五配位结构.利用光谱法研究了突变体H64V与叠氮离子(N_3^-)的相互作用.紫外-可见吸收光谱表明,H64V与N_3^-键合后其Soret带吸收峰由406 nm红移至418 nm;荧光光谱表明N_3^-可使H64V的荧光发生静态猝灭.计算得到了H64V与N_3^-键合的平衡解离常数和热力学参数.另外,还研究了不同阴离子对H64V与N_3^-结合的影响,发现阴离子的存在减弱了N_3^-与H64V之间的结合力.

关键词：神经红蛋白突变体H64V 叠氮离子光谱法

2,6-二氨基嘌呤金属镉配合物的合成、结构与荧光性质

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天津师范大学学报（自然科学版） 2022年第1期42卷 26-30页

作者：杨晓婷姚世博任瑞李来仪杨翰文赵红昆穆建帅天津师范大学化学学院天津300387 天津师范大学天津市功能分子结构与性能重点实验室天津300387

通过水热法合成了一个以2,6-二氨基嘌呤(Hdap)和硫酸根阴离子(SO_(4)^(2-))为混合配体的金属配合物{[Cd_(0.5)(Hdap)(H_(2)O)(SO_(4))]·H_(2)dap}.采用单晶和粉末X-射线衍射、元素分析、红外光谱和荧光光谱等方法对其结构和性能进行了... 详细信息

通过水热法合成了一个以2,6-二氨基嘌呤(Hdap)和硫酸根阴离子(SO_(4)^(2-))为混合配体的金属配合物{[Cd_(0.5)(Hdap)(H_(2)O)(SO_(4))]·H_(2)dap}.采用单晶和粉末X-射线衍射、元素分析、红外光谱和荧光光谱等方法对其结构和性能进行了表征.结果表明:该配合物属于三斜晶系Pī空间群,a=0.67173(5)nm,b=1.18597(6)nm,c=1.20074(9)nm,α=93.145(5)°,β=106.550(2)°,γ=102.383(5)°,V=0.92066(11)nm^(3),Z=2.单晶结构分析表明,配合物为单核结构,分别通过O(5)—H(5B)…O(2)和N(6)—H(6A)…N(1)氢键连接成一维链和二维平面结构.游离的H_(2)dap^(+)阳离子通过5组氢键将相邻二维面相连接拓展为三维超分子结构.荧光性质分析结果表明,该配合物可用作良好的发光材料.

关键词： 2,6-二氨基嘌呤镉配合物氢键作用晶体结构荧光性质

High sensitivity D-shaped hole fiber temperature sensor based on surface plasmon resonance with liquid filling

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Photonics Research 2017年第2期5卷 103-107页

作者： SIJUN WENG LI PEI jianshuai WANG TIGANG NING JING LI Key Lab of All Optical Network and Advanced Telecommunication Network of Ministry of Education Institute of Lightwave TechnologyBeijing Jiaotong University

A high sensitivity D-shaped hole double-cladding fiber temperature sensor based on surface plasmon resonance(SPR)is designed and investigated by a full-vector finite element *** the D-shaped hole doublecladding fiber,the hollow D-section is coated with gold film and then injected in a high thermo-optic coefficient liquid to realize the high temperature sensitivity for the fiber SPR temperature *** numerical simulation results show that the peaking loss of the D-shaped hole double-cladding fiber SPR is hugely influenced by the distance between the D-shaped hole and fiber core and by the thickness of the gold film,but the temperature sensitivity is almost insensitive to the above *** the thermo-optic coefficient is -2.8×10^(-4)∕℃,the thickness of the gold film is 47 nm,and the distance between the D-shaped hole and fiber core is 5μm,the temperature sensitivity of the D-shaped hole fiber SPR sensor can reach to -3.635 nm∕℃.

关键词： High sensitivity D-shaped hole fiber temperature sensor based on surface plasmon resonance with liquid filling mode