检索结果-南通市图书馆

Visible-light-driven photocatalysis degradation of antibiotic pollutants by la-doped CeO2 nanorods:synergy of la doping and oxygen vacancy

引用

Rare Metals 2024年第7期43卷 3134-3145页

作者： Shi-Hai Cao Jing-Ru Qu Yu-Qi Zhao Yun-Tong Sun Wen-Tong Gao Bing Han Yao Lu College of Environmental Engineering Nanjing Institute of Technology School of Materials Science and Engineering Nanjing Institute of Technology School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological University Institute of Environmental Health and Ecological Security School of Environment and Safety EngineeringJiangsu University Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou University of Science and Technology

Elemental doping is an effective strategy to enhance photocatalytic activity and extend the light absorption range of single-component *** this work,a series of la-doped CeO2nanorods（la-CeO2-x） with la content of 1 wt%-15 wt% are synthesized by a simple hydrothermal method and further used as photocatalyst for sulfamerazine（SMR） *** prepared la-CeO2-x nanorods exhibit a great improvement in electron-hole pair migration and visible-light response due to the synergistic effect of abundant oxygen vacancies and heterogeneous elements（la）.Consequently,la-CeO2-x exhibited excellent visible-light photocatalytic performances and chemical stability for SMR degradation,the la-CeO2-5 sample achieved the highest SMR degradation rate of 81%,which was 3.4 times higher than that of the original ***,three possible degradation pathways of SMR in la-CeO2photocatalytic reactions were proposed by liquid chromatography-mass spectrometry ***,density functional theory calculations were carried out to provide an in-depth understanding of the structure-performance *** its excellent properties and better photocatalytic performance,this study demonstrates that la doping in CeO2is an effective way to increase oxygen vacancy and improve the photochemical properties of photocatalysts.

关键词： CeO 2 nanorod la-doped Photocatalysis Oxygen vacancy Sulfamerazine

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Structural and Magnetic Properties of la-doped Li-Ni Ferrite

引用

Journal of Rare Earths 2005年第S1期23卷 259-262页

作者：蒋静李良超徐烽李志亭 Department of Chemistry Institute of Physical Chemistry Zhejiang Normal University Jinghua 321004 China

A series of polycrystalline la-doped Li-Ni ferrites LiNi_ 0.5la_xFe_ 2-xO_4 (where x=0.0～0.08 in steps of 0.02) were prepared by thermolysising of oxalate precursors which were obtained by rheological phase reaction. Results were observed by powder X-ray diffractometer (XRD) on samples indicate that all doped ferrites have the major spinel phase, and the single spinel phase is obtained in la content x≤0.04. The lattice parameter increases in the range of x=0～0.04, then decreases up to x=0.08. The hysteresis loops show that the value of saturation magnetization is less than that of the pure Li-Ni ferrite except for x=0.04, while the coercivity increases with the la content.

关键词： rheological phase Li-Ni ferrite la-doped structure magnetic properties rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on Ferroelectric and Dielectric Properties of la-doped CaBi_4Ti_4O_(15)-Based Ceramics

引用

Journal of Rare Earths 2007年第2期25卷 168-172页

作者：郑夏莲黄新友高春华 School of Materials Science and Engineering Jiangsu University

lanthanum doped bismuth layer structured ferroelectrics （BLSFs） Ca1 - x laxBi4 （Ti0.9W0. 1 ）4O15 （ x = 0, 0.2, 0.3, 0.4, 0.6） ceramics were prepared by solid-state reaction method. X-ray diffraction （XRD） patterns showed that single phase was formed when x = 0 - 0.6. The effects of la^3＋ doping on dielectric, piezoelectric and ferroelectric properties of Ca1-xlaxBi4（Ti0.9W0.1）4O15 ceramics were studied. Ca0.7la0.3Bi4（Ti0.9W0.1）4O15 ceramic had optimal properties, its dielectric constant was 166.85, dielectric loss was 0.0063, piezoelectric strain constant was 11 pc·N^-1, remanent polarization was 18.1μC·cm^-2 and coercive field was 118 kV·cm^-1. SEM micrographs showed that the grains of CaBi4Ti4O15-based ceramics were plate-like. The results of energy spectrum analysis （EDS） showed that la^3＋ incorporation could increase Bi/Ca ratio.

关键词： bismuth layer structure ceramics la-doped ferroelectric rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hydrophilic and photocatalytic performances of lanthanum doped titanium dioxide thin films

引用

Journal of Rare Earths 2013年第10期31卷 992-996页

作者：杜军李不悔黄晶晶张文龙彭海龙邹建国 Key lab of Poyang lake Ecology and Bio-resource Utilization (Ministry of Education) Department of Chemical Engineering College of Environmental and Chemical Engineering Nanchang University

Pure and la-doped TiO2 thin films were prepared on glass by sol-gel method using tetrabutyl titanate as Ti precursors. Their chemical composition, structure and properties were characterized by X-ray diffraction （XRD）, Fourier transform infrared （FT-IR）, UV-Visible spectrophotometer and optical contact angle measuring instrument, respectively. The results showed that the content of la was the key factor for hydrophilic and photocatalytic activity. laTiO3 could be formed in la-doped TiO2 thin films, which caused the TiO2 lattice distortion and restrained the transition from anatase to rutile. By adding 0.3 wt.% la to the TiO2 thin films, the optimal hydrophilic character could be obtained and the contact angle was only 9.6~. la-doped TiO~ thin films could ex- pand the wavelength response range of TiO2, and thus increase the speed of the photocatalytic reaction. 92.02% of methylene blue was finally degraded when the concentration of la was 0.3 wt.%. The expressions of ln（CAo/CA） as functions of photocatalytic time were deduced which were well consistent with the experimental results.

关键词： Ti02 la-doped hydrophilicity photo-catalytic activity rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preparation of PLZT films from metallo-organic precursors

引用

Chinese Science Bulletin 1996年第8期41卷 692-695页

作者：孙平张良莹姚熹 Department of Electronic Engineering Southeast University Nanjing 210096 China Electronic Materials Research laboratory Xi'an Jiaotong University Xi'an 710049 China

Ferroelectric ceramics lead lanthanum zirconate titanate (PLZT) exhibits excellentdielectric, pyroelectric, piezoelectric, ferroelectric, and electrooptic characteristics because ofits wide composition range. Thus, it... 详细信息

关键词： ferroelectrics thin film la-doped lead zirconate titanate.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：