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In-situ growth of large-area monolithic Fe_(2)O_(3)/TiO_(2) catalysts on flexible Ti mesh for CO oxidation

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Journal of Materials Science & Technology 2021年第10期69卷 119-128页

作者： Xinyue Tang Junchao Wang Jing Li xinglai zhang Peiqing La Xin jiang Baodan Liu Shenyang National Laboratory for Materials Science(SYNL) Institute o f Metal Research(IMR)Chinese Academy of Sciences(CAS)No.72 Wenhua RoadShenyang110016 China School of Materials Science and Engineering University of Science and Technology of ChinaNo.72 Wenhua Road.Shenyang110016 China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou730050China

In this study, we reported the in-situ fabrication of a series of Fe_(2)O_(3)/TiO_(2) monolithic catalysts on flexible Ti mesh via plasma electrolytic oxidation process, hydrothermal reaction and chemical bath deposition(CBD) method. The morphology tailoring of Fe_(2)O_(3) nanostructures finds that Fe2O3 nanosheets supported on TiO2 exhibit superior catalytic performance with a complete oxidation of CO at 260℃. The catalytic stability test indicates that the in-situ grown Fe_(2)O_(3)/TiO_(2) catalysts own outstanding performance for continuous CO oxidation due to the strong substrate adhesion without mass loss. The microstructures and interfaces of Fe_(2)O_(3)/TiO_(2) catalysts are well studied using series of characterization techniques. The in-situ preparation strategy of metal oxide catalysts in this work will open up more opportunities for the rational design of variety of monolithic catalysts used for CO oxidation, de-NO_(x), three-way catalysis and other related application in industry.

关键词： Fe_(2)O_(3)/TiO_(2)nanostructures Monolithic catalysts Plasma electrolytic oxidation In-situ fabrication CO oxidation

High-performance and broadband photodetection of bicrystalline(GaN)_(1-x)(ZnO)_(x)solid solution nanowires via crystal defect engineering

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Journal of Materials Science & Technology 2021年第26期85卷 255-262页

作者： Zongyi Ma Gang Li xinglai zhang Jing Li Cai zhang Yonghui Ma Jian zhang Bing Leng Natalia Usoltseva Vladimir An Baodan Liu School of Materials Science and Engineering Liaoning Technical UniversityFuxin 123000China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Structure Analysis Division Testing CenterInstitute of Metal ResearchChinese Academy of ScienceShenyang 110016China Department of Plastic Surgery The First Affiliated Hospital of China Medical UniversityShenyang 110001China School of Advanced Manufacturing Technologies National Research Tomsk Polytechnic University30 Lenin Ave.Tomsk 634050Russia

Crystal defect engineering is widely used as an effective approach to regulate the optical and optoelectronic properties of semiconductor ***,photogenerated electron-hole pair recombination centers caused by structural defects usually lead to the reduction of optoelectronic *** this work,a high-performance photodetector based on(GaN)_(1-x)(ZnO)_(x)solid solution nanowire with bicrystal structure is fabricated and it shows excellent photoresponse to ultraviolet and visible *** highest responsivity of the photodetector is as high as 60,86 and 43 A/W under the irradiation of365 nm,532 nm and 650 nm,*** corresponding response time is as fast as 170,320 and 160 *** wide spectral responses can be attributed to various intermediate energy levels induced by the introduction of various structural defects and dopants in the solid solution ***,the peculiar bicrystal boundary along the axial direction of the nanowire provides two parallel and fast transmission channels for photo-generated carriers,reducing the recombination of photo-generated *** findings provide a valued example using crystal defect engineering to broaden the photoresponse range and improve the photodetector performance and thus can be extended to other material systems for various optoelectronic applications.

关键词： (GaN)1-x(ZnO)x Nanowires Photodetectors Broadband photodetection Crystal defect engineering

Highly efficient visible-light photocatalytic degradation and antibacterial activity by GaN:ZnO solid solution nanoparticles

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Journal of Materials Science & Technology 2021年第35期94卷 67-76页

作者： Bing Leng xinglai zhang Shanshan Chen Jing Li Ziqing Sun Zongyi Ma Wenjin Yang Bingchun zhang Ke Yang Shu Guo Department of Plastic Surgery The First Affiliated Hospital of China Medical UniversityNo.155 North Nanjing StreetShenyang 1W001China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesNo.72 Wenhua RoadShenyang 110016China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChines Academy of Sciences.No.72 Wenhua RoadShenyang 110016China

The development of high-efficiency photocatalysts is the primary goal in the field of photocatalytic antibacterial *** this work,the Ga N:Zn O solid solution nanoparticles(NPs)photocatalyst with strong visible absorption and large specific surface area was synthesized via the sol-gel and nitridation reaction ***,we systematically investigated the removal efficiency of the organic pollutant and antibacterial activity on *** and ***,methylene blue solution could be completely degraded after 100 min of visible light illumination using 2 mg/m L Ga N:Zn O ***,~94%of the *** were inactivated within 120 min,whereas 100%antibacterial activity against *** was achieved after 90 min of visible light illumination mediated by Ga N:Zn O *** further explore the potential mechanism of visible light photocatalytic antibacterial activity enhanced by Ga N:Zn O NPs *** current work not only provides a new and efficient photocatalytic antibacterial nanomaterial but also demonstrates its promising applications in environmental and biological fields.

关键词： GaN:ZnO solid solution Photocatalysis Antibacterial Photocatalytic degradation Photocatalysts

Low-temperature and stable CO oxidation of Co_(3)O_(4)/TiO_(2) monolithic catalysts

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Chinese Chemical Letters 2021年第1期32卷 48-52页

作者： Xinyue Tang Junchao Wang Yonghui Ma Jing Li xinglai zhang Baodan Liu Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Foshan Graduate School of Northeastern University Foshan 528300China Structure Analysis Division Testing CenterInstitute of Metal ResearchChinese Academy of ScienceShenyang 110016China

Highly efficient Co_(3)O_(4)/TiO_(2) monolithic catalysts with enhanced stability were in-situ grown on Ti mesh for CO oxidation,which could completely oxidize CO at 120℃.The comprehensive catalytic performance is competitive to some noble metal catalysts and conventional Co_(3)O_(4) powder catalysts,which holds great potential toward industrial ***,the in-situ synthesis strategy of Co_(3)O_(4)/TiO_(2) monolithic catalysts on flexible mesh substrate in this work can be extended to the development of a variety of oxide-based monolithic catalysts towards diverse catalysis applications.

关键词： Co_(3)O_(4)/TiO_(2) In-situ growth Monolithic catalysts Long-term stability CO oxidation

In-situ synthesis of TiO_2 nanostructures on Ti foil for enhanced and stable photocatalytic performance

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Journal of Materials Science & Technology 2019年第4期35卷 615-622页

作者： Ke Wang Baodan Liu Jing Li Xiaoyuan Liu Yang Zhou xinglai zhang Xiaoguo Bi Xin Jiang School of Materials Science and Engineering University of Science and Technology of China Shenyang National Laboratory for Materials Science (SYNL) Institute of Metal Research (IMR)Chinese Academy of Sciences (CAS) School of Renewable Energy Shenyang Institute of Engineering

TiO_2 nanostructures with strong interfacial adhesion and diverse morphologies have been in-situ grown on Ti foil substrate through a multiple-step method based on conventional plasma electrolytic oxidation(PEO) technology, hydrothermal reaction and ion exchange process. The PEO process is critical to the formation of TiO_2 seeding layer for the nucleation of Na_2Ti_3O_7 and H_2Ti_3O_7 mediates that are strongly attached to the Ti foil. An ion exchange reaction can finally lead to the formation of H_2Ti_3O_7 nanostructures with diverse morphologies and the calcination process can turn the H_2Ti_3O_7 nanostructures into TiO_2 nanostructures with enhanced crystallinity. The morphology of the TiO_2 nanostructures including nanoparticles(NP), nanowhiskers(NWK), nanowires(NW) and nanosheets(NS) can be easily tailored by controlling the NaOH concentration and reaction time during hydrothermal process. The morphology, composition and optical properties of TiO_2 photocatalysts were analyzed using scanning electron microscope(SEM), X-ray diffraction(XRD), photoluminescence(PL) spectroscopy and UV–vis absorption spectrum. Photocatalytic tests indicate that the TiO_2 nanosheets calcined at 500?C show good crystallization and the best capability of decomposing organic pollutants. The decoration of Ag cocatalyst can further improve the photocatalytic performance of the TiO_2 nanosheets as a result of the enhanced charger separation efficiency. Cyclic photocatalytic test using TiO_2 nanostructures grown on Ti foil substrate demonstrates the superior stability in the photodegradation of organic pollutant, suggesting the promising potential of in-situ growth technology for industrial application.

关键词： Plasma electrolytic oxidation In-situ growth TiO2 Photocatalysis Ag co-catalyst

高速列车牵引传动系统协同仿真研究及软件设计

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中国铁道科学 2017年第4期38卷 92-100页

作者：葛兴来张晓华西南交通大学磁浮技术与磁浮列车教育部重点实验室四川成都610031

为完善高速列车耦合大系统仿真平台,开展三电平牵引传动系统全速域动态仿真建模和协同仿真软件设计的研究。基于牵引传动系统主电路的拓扑结构和三电平逆变器的工作原理,设计用作列车中速区的同步7脉冲和同步5脉冲SVPWM算法,以提高列车... 详细信息

为完善高速列车耦合大系统仿真平台,开展三电平牵引传动系统全速域动态仿真建模和协同仿真软件设计的研究。基于牵引传动系统主电路的拓扑结构和三电平逆变器的工作原理,设计用作列车中速区的同步7脉冲和同步5脉冲SVPWM算法,以提高列车中速区SVPWM算法的谐波性能;在此基础上,采取用MATLAB/SIMULINK软件建立牵引传动系统全速域动态仿真模型、用VC++软件编制交互界面和数据可视化等上位机程序的混合编程方法,实现高速列车牵引传动系统与运行控制系统间的协同仿真;在不同仿真模式、不同运行工况下对设计的算法、模型和编制的协同仿真软件进行验证。结果表明:能够实现在闭环控制下不同同步脉冲调制间的平滑切换,可较好地反映高速列车牵引传动系统的实际运行情况,满足协同仿真的设计要求。

关键词：牵引传动系统协同仿真全速域SVPWM 软件设计高速列车

视觉反馈对慢性踝关节不稳者落地过程中生物力学的影响

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中国组织工程研究 2024年第6期28卷 900-904页

作者：章丽莉张兴来张杰郑洁皎复旦大学附属华东医院上海市200040 上海中医药大学附属岳阳中西医结合医院上海市200437

背景:落地试验可以有效观察慢性踝关节不稳患者的下肢运动生物力学指标,分析影响慢性踝关节不稳姿势稳定性的平衡调节策略,以期为慢性踝关节不稳患者避免再次损伤以及损伤后临床康复提供有价值的参考依据。目的:通过观察落地过程中睁眼... 详细信息

背景:落地试验可以有效观察慢性踝关节不稳患者的下肢运动生物力学指标,分析影响慢性踝关节不稳姿势稳定性的平衡调节策略,以期为慢性踝关节不稳患者避免再次损伤以及损伤后临床康复提供有价值的参考依据。目的:通过观察落地过程中睁眼和闭眼时慢性踝关节不稳患者的运动学和动力学指标,分析视觉对慢性踝关节不稳姿势稳定性的影响及平衡调节策略的变化。方法:31例慢性踝关节不稳患者健、患侧腿分别在睁眼和闭眼条件下,从40 cm跳台单腿落地,采用三维运动捕捉系统采集落地过程中的动力学和运动学数据,配对t检验比较健、患侧腿在两种条件下落地的差异性。结果与结论:(1)动力学指标:闭眼时患侧踝关节前方、后方以及垂直方向地面反作用力峰值相对值大于睁眼条件下,且垂直方向地面反作用力峰值出现时间晚于睁眼时(P<0.05);(2)运动学指标:在闭眼条件下,健、患侧腿膝触地时屈曲角度均大于睁眼条件下(P<0.05),患侧膝、踝最大屈曲角度及前馈角度变化大于患侧睁眼条件下(P<0.05),落地稳定时间较睁眼时延长(P<0.05);(3)提示在去除视觉输入的条件下,慢性踝关节不稳者在落地过程中地面反作用力峰值增大、落地关节角度增大、维持姿势稳定所需的时间延长,加大了落地损伤的概率,视觉对慢性踝关节不稳患者平衡的维持起到前庭觉和本体感觉不能弥补的作用。

关键词：踝关节不稳落地视觉生物力学平衡

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一种钻井液滤液侵入储层深度的评价方法

广东化工 2018年第9期45卷 41-42,52页

作者：张兴来中海油田服务股份有限公司油田化学事业部河北燕郊065201

本文利用高温高压动态滤失仪测试了不同时间钻井液污染岩心的滤失量,拟合得到滤失量跟时间平方根的线性方程,由此可计算出该钻井液体系在储层的滤失体积,而此滤失体积跟被污染储层的孔隙体积相等,据此可计算出滤液的侵入深度。计算公式... 详细信息

本文利用高温高压动态滤失仪测试了不同时间钻井液污染岩心的滤失量,拟合得到滤失量跟时间平方根的线性方程,由此可计算出该钻井液体系在储层的滤失体积,而此滤失体积跟被污染储层的孔隙体积相等,据此可计算出滤液的侵入深度。计算公式表明:钻井液滤液侵入储层的深度与泥饼的渗透率、固体含量因素、渗滤压差、滤液粘度的复合影响参数及储层孔隙度、井眼半径有关。利用此方法评价了NB31-1-3H井和上海残雪北区块储层侵入深度,结果显示无固相弱凝胶钻井液体系侵入深度浅,具有较好的储层保护效果。

关键词：侵入深度储层高温高压动态滤失仪

择优取向氮掺杂氧化铟薄膜的制备及其光电性能

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硅酸盐学报 2023年第1期51卷 145-151页

作者：孙辉沈龙海刘子童陈建金张芮馨程佳张兴来沈阳理工大学理学院沈阳110159 中国科学院金属研究所沈阳110016

为探索氧化铟基半导体薄膜择优取向的控制生长策略,并探究晶面取向对光电性能的影响,采用磁控溅射技术在石英(SiO_(2))衬底上分别制备了具有(222)和(440)晶面择优取向的氮掺杂氧化铟(In_(2)O_(3):N)薄膜,利用X射线衍射仪、扫描电子显微... 详细信息

为探索氧化铟基半导体薄膜择优取向的控制生长策略,并探究晶面取向对光电性能的影响,采用磁控溅射技术在石英(SiO_(2))衬底上分别制备了具有(222)和(440)晶面择优取向的氮掺杂氧化铟(In_(2)O_(3):N)薄膜,利用X射线衍射仪、扫描电子显微镜、X射线光电子能谱仪、紫外-可见分光光度计对In_(2)O_(3):N薄膜的晶体结构、表面形貌、元素组成、光学带隙进行了表征,并研究了不同择优取向薄膜的光电特性。结果表明:不同择优取向In_(2)O_(3):N薄膜的氮掺杂均以替位式为主,氮掺杂会导致氧化铟的禁带宽度减小至2.89 eV。相比(222)晶面择优取向,(440)晶面择优取向的In_(2)O_(3):N薄膜的光响应时间更短。

关键词：氮掺杂氧化铟磁控溅射择优取向光电探测