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Chinese Chemical Letters 2021年第10期32卷 3149-3154页

作者： Jiahui yu Chaozheng He Chunying Pu Ling Fu Dawei Zhou Kun Xie Jinrong Huo Chenxu Zhao lingmin yu Institute of Environmental and Energy Catalysis School of Materials Science and Chemical EngineeringXi'an Technological UniversityXi'an 710021China School of Mathematics and Physics Nanyang Institute of TechnologyNanyang 473004China Shaanxi Key Laboratory of Optoelectronic Functional Materials and Devices School of Materials Science and Chemical EngineeringXi'an Technological UniversityNanyang 473061China College of Physics and Electronic Engineering Nanyang Normal UniversityXi'an 710021China College of Resources and Environmental Engineering Tianshui Normal UniversityTianshui 741001China School of Sciences Xi'an Technological UniversityXi'an 710021China

In this paper,a novel BC_(3)N_(2)monolayer has been found with a graphene-like structure using the developed particle swarm optimization algorithm in combination with ab initio *** predicted structure meets the thermodynamical,dynamical,and mechanical stability ***,the BC_(3)N_(2)plane shows a metallic ***,BC_(3)N_(2)has an in-plane stiffness comparable to that of *** have also investigated the adsorption characteristics of CO_(2)on pristine monolayer and Mo functionalized monolayer using density functional ***,electronic structures of the interacting systems(CO_(2)molecule and substrates)have been preliminarily *** results show that Mo/BC_(3)N_(2)has a stronger adsorption capacity towards CO_(2)comparing with the pristine one,which can provide a reference for the further study of the CO_(2)reduction mechanism on the transition metal-functionalized surface as well as the new catalyst’s design.

关键词： Structure searching BC_(3)N_(2) First-principles Adsorption Catalyst Electronic structure

The Stability Analysis of Implants Installed in Osteotomies with Different Types of Controlled Bone Defects

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Journal of Wuhan University of Technology(Materials Science) 2015年第1期30卷 210-215页

作者：周聪 yu lingmin DONG Chen CONG Liyao SHI Hongbing JUN Sangho KWON Jongjin JIANG Ling 金光春 Department of Medicine Korea University Graduate School Oral Medical College Binzhou Medical University Oral Medical College Beihua University

The stability parameters of implants （ITV, ISQ ＆ PTV） according to different sizes of controlled bone defects made in implant osteotomies were analyzed and the correlation among the three kinds of implant stability parameters was tested in this study. 45 tapped screw-type dental implants were inserted in three types of implant osteotomies made in 8 fresh-frozen pig femoral bones： Typel - without coronal bone defect, Type2 - with 3 mm coronal bone defects, and Type3 - with 6 mm coronal bone defects. The insertion torque values, ISQ ＆ PTV of implants were measured and analyzed statistically. It is concluded that the circumferential coronal bone defects statistically influence the primary stability of implants; ITV, ISQ and PTV are suitable and available to detect the peri-implant coronal bone defects in 3 mm increments, and ITV and PTV are more sensitive to coronal cortical bone loss. There was a strong correlation between ITV and ISQ.

关键词： implant stability immediate implant bone defect insertion torque value ISQ PTV

Surface Characteristics of Mussel-inspired Polydopamine Coating on Titanium Substrates

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Journal of Wuhan University of Technology(Materials Science) 2014年第1期29卷 197-200页

作者：姜玲 JIN Guangchun KANG Jiyeon yu lingmin YOON Wookang LIM MyungJin PAR K Ilsong LEE Minho JIN Dongchun Yantai Affiliated Hospital of Binzhou Medical University Oral Medical College Beihua University Department of Oral and Maxillofacial Surgery Hallym University Dongtan Sacred Heart Hospital Department of Dental Biomaterials and Institute of Oral Bioscience School of Dentistry BK21 Project Chonbuk National University Department of Veterinary Yanbian University

Mussel adhesive proteins are non-toxic, biodegradable and have low immunogenic qualities that make them highly attractive for medical purposes compared with man-made materials. 3,4-DOPA, which is a dopamine precursor, is a critical element for achieving mussel-like adhesive properties. In present study, polydopamine was coated onto the titanium surfaces by dipping in a 2 mg/mL dopamine solution in 10 mM Tris- HCl buffer at pH 8.5. EDX element analysis and Raman spectroscopic analysis of the surface were conducted to verify the formation of polydopamine. The surface characteristics of polydopamine-coated titanium plates were observed by SEM and AFM. Hydrophilicity and corrosion-resistance were also evaluated by static contact angle measurements and potentiodynamic polarization corrosion tests. The absorption intensity for pH-induced polymerization rapidly increased for the initial four hours and thereafter smoothly increased. EDX element analyses revealed that the content of carbon and oxygen increased and the content of titanium decreased after the coating process. In the Raman spectra, polydopamine resulted in two new peaks at approximately 1 370 and 1 570 cm^-1 resulting from the stretching and deformation of catechol. Microstructural features revealed that nanometer-sized bright granules were randomly distributed after coating, and these nanoparticles grew with increased coating time. The Ra values of polydopamine-coated titanium plates were showed to increase with coating time. Compared to the pure titanium curve, the inflection point of polydopamine-coated titanium was located at a higher corrosion potential and lower corrosion current density. Findings from our research suggested that polydopamine coatings offer a versatile approach for titanium surface modification.

关键词： surface modification titanium polydopamine surface characteristics

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关于深圳市小区雨水系统入流入渗问题的研究

给水排水 2023年第S2期49卷 741-748页

作者：喻灵敏深圳市南山区水务局深圳518000

深圳市污水零直排区创建实践中,发现部分小区因雨水系统入流、入渗问题导致雨水管道常年或季节性有稳定小水流,水质难以合格。为解决上述问题,采用科学的方法,有目的,有计划,系统的收集、整理、研究雨水系统渗水和空调水问题,对其水质... 详细信息

深圳市污水零直排区创建实践中,发现部分小区因雨水系统入流、入渗问题导致雨水管道常年或季节性有稳定小水流,水质难以合格。为解决上述问题,采用科学的方法,有目的,有计划,系统的收集、整理、研究雨水系统渗水和空调水问题,对其水质和水量规律形成比较客观的认识,对解决问题的技术策略进行了思考。

关键词：深圳市污水零直排入流入渗

丝网印刷ZnO纳米锥的浆料制备及场发射特性研究

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西安交通大学学报 2007年第8期41卷 974-977,990页

作者：于灵敏朱长纯西安交通大学电子与信息工程学院

针对现有的丝网印刷碳纳米管薄膜需要各种后处理工艺才能改善其场发射特性的问题,提出了一种不需任何后处理的丝网印刷ZnO纳米锥的浆料配制工艺.该工艺以羧甲基纤维素为制浆剂,以水为溶剂,所制备的ZnO纳米锥薄膜表面上的有机浆料已基本... 详细信息

针对现有的丝网印刷碳纳米管薄膜需要各种后处理工艺才能改善其场发射特性的问题,提出了一种不需任何后处理的丝网印刷ZnO纳米锥的浆料配制工艺.该工艺以羧甲基纤维素为制浆剂,以水为溶剂,所制备的ZnO纳米锥薄膜表面上的有机浆料已基本分解,ZnO纳米锥在高温下既不会弯曲也不会团聚,且成本低,工艺简单.场发射特性测试表明,ZnO纳米锥与制浆剂质量比为3∶5的薄膜在电流密度为0.01 A/m2时,最低开启场强为2.25 V/μm,在4 V/μm场强下,阳极荧光粉的发光点亮度高且分布均匀.该工艺在ZnO纳米锥场发射显示器的制作中有很好的实际应用价值.

关键词： ZnO纳米锥丝网印刷场发射有机浆料场发射显示器

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Pt改性二氧化钛光催化去除溴酸盐

哈尔滨工业大学学报 2013年第8期45卷 56-60页

作者：朱荣淑喻灵敏董文艺哈尔滨工业大学深圳研究生院环境科学与工程研究中心广东深圳518055

为提高二氧化钛光催化去除溴酸盐效率,采用浸渍法制备Pt/TiO2光催化剂,研究其在365 nm紫外光下光催化去除溴酸盐(BrO3-)活性及Pt负载量、煅烧温度、pH、溶解氧、有机物等因素对其光催化去除BrO3-活性的影响,考察其光催化去除BrO3-动力学... 详细信息

为提高二氧化钛光催化去除溴酸盐效率,采用浸渍法制备Pt/TiO2光催化剂,研究其在365 nm紫外光下光催化去除溴酸盐(BrO3-)活性及Pt负载量、煅烧温度、pH、溶解氧、有机物等因素对其光催化去除BrO3-活性的影响,考察其光催化去除BrO3-动力学.结果表明:PtCl4光敏化的作用显著提高了TiO2光催化去除BrO3-活性,最优Pt负载量为0.01%;Pt/TiO2最优煅烧温度为400℃;BrO3-去除率随pH降低而快速增加;溶解氧及有机物乙醇都抑制了Pt/TiO2光催化去除BrO3-;Pt/TiO2光催化去除BrO3-表现为一级反应动力学.

关键词：溴酸盐光催化铂二氧化钛紫外光

ZnO纳米线在外加电场下的生长及场发射性能

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华中科技大学学报（自然科学版） 2007年第10期35卷 98-100页

作者：范新会于灵敏严文朱长纯西安工业大学材料与化工学院陕西西安710032 西安交通大学电子与信息工程学院陕西西安710049

在外加电场条件下,利用化学气相沉积法制备出了长径比为400∶1的四角状ZnO纳米线.利用多功能场发射测试仪对ZnO纳米线进行了场发射特性测试,研究了外加电场对ZnO纳米线生长的影响,讨论了ZnO纳米线在强场下的场发射电流强度饱和现象产生... 详细信息

在外加电场条件下,利用化学气相沉积法制备出了长径比为400∶1的四角状ZnO纳米线.利用多功能场发射测试仪对ZnO纳米线进行了场发射特性测试,研究了外加电场对ZnO纳米线生长的影响,讨论了ZnO纳米线在强场下的场发射电流强度饱和现象产生的原因.结果表明:外加电场大大促进了四角状ZnO纳米线在一维方向上的生长,外加电场下制备的ZnO纳米线在电流密度为0.1 mA/cm2的开启场强仅为2.25V/μm,ZnO纳米线在强场下的场发射电流强度饱和现象归因于强场下电子输运速度的饱和.

关键词： ZnO纳米线外加电场场发射性生长四角锥状

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丝网印刷碳纳米管显示器灰度失真的研究

西安交通大学学报 2008年第6期42卷 734-738页

作者：潘金艳朱长纯商世广于灵敏西安交通大学电子与信息工程学院西安710049

通过研究两级结构丝网印刷碳纳米管显示器(CNT-FED)引线电极的线性分压问题,发现电极的线性电阻导致不同像素点间存在0.2%的电场偏差,引起8位元(256级)灰度显示中的24级灰度被湮没.为解决电极引线引起的灰度图像显示失真的问题,提出了一... 详细信息

通过研究两级结构丝网印刷碳纳米管显示器(CNT-FED)引线电极的线性分压问题,发现电极的线性电阻导致不同像素点间存在0.2%的电场偏差,引起8位元(256级)灰度显示中的24级灰度被湮没.为解决电极引线引起的灰度图像显示失真的问题,提出了一种CNT-FED电极的改造方法,通过改进屏内部引线电极和增加阴极反馈电阻,使像素点间的等效电阻值偏差从总电阻值的0.2%减小到0.0003%,且抑制了发射电流的波动,增加了像素点的过流保护.计算和仿真结果显示,新电极消除了256级灰度显示的失真,有效提高了CNT-FED的发光均匀性.

关键词：碳纳米管显示器丝网印刷灰度发光均匀性

物理热蒸发法制备CdS/SiO_2纳米线阵列和CdS纳米带

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西安交通大学学报 2006年第1期40卷 75-78,83页

作者：于灵敏祁立军范新会严文西安工业学院材料与化工学院西安710032

利用物理热蒸发法蒸发CdS和CdO的混合粉末,Si衬底表面发生了选择性刻蚀,并由此制备出CdS/SiO2纳米线阵列和CdS纳米带.研究了CdS/SiO2纳米线阵列的形成原因和CdS纳米带的生长过程,结果表明:CdS枝晶的生长对CdS/SiO2纳米线阵列的形成起到... 详细信息

利用物理热蒸发法蒸发CdS和CdO的混合粉末,Si衬底表面发生了选择性刻蚀,并由此制备出CdS/SiO2纳米线阵列和CdS纳米带.研究了CdS/SiO2纳米线阵列的形成原因和CdS纳米带的生长过程,结果表明:CdS枝晶的生长对CdS/SiO2纳米线阵列的形成起到了非常重要的作用;CdS/SiO2纳米线阵列的形成符合“纳米电化学自组织机制”;CdS纳米带的生长过程为气-固过程.

关键词： CdS/SiO2纳米线阵列 CdS纳米带纳米电化学自组织机制

Ag掺杂比例对ZnO纳米材料气敏性能的影响

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化工新型材料 2012年第5期40卷 37-39页

作者：曹磊范新会于灵敏西安工业大学理学院材料与化工学院西安710032

采用物理热蒸发法制备ZnO纳米材料及不同质量分数(1%,3%,5%,wt,下同)Ag掺杂的ZnO纳米材料,制备成旁热式气敏元件,采用静态配气法对目标气体进行气敏性能测试。实验结果表明,Ag掺杂ZnO纳米材料较纯ZnO纳米材料对目标气体(酒精、甲烷、一... 详细信息

采用物理热蒸发法制备ZnO纳米材料及不同质量分数(1%,3%,5%,wt,下同)Ag掺杂的ZnO纳米材料,制备成旁热式气敏元件,采用静态配气法对目标气体进行气敏性能测试。实验结果表明,Ag掺杂ZnO纳米材料较纯ZnO纳米材料对目标气体(酒精、甲烷、一氧化碳)的气敏性能有所提高。其中,Ag掺杂质量分数为1%的ZnO纳米材料气敏性能最佳,提高幅度分别达215%,128%和76%(C2H5OH,CH4,CO)。借助X射线衍射仪和扫描电子显微镜对所制得不同比例Ag掺杂的ZnO纳米结构进行表征,并对实验结果进行气敏性能分析,结合势垒模型和能带理论进行气敏机理分析。

关键词： ZnO纳米材料 Ag掺杂气敏性能