检索结果-南通市图书馆

Phase Transition Behavior of Nanocrystalline Al<sub>2</sub>O<sub>3</sub>Powders

Soft Nanoscience Letters 2013年第4期3卷 69-74页

作者： balaraman sathyaseelan Iruson Baskaran Kandasamy Sivakumar Department of Physics Anna University Chennai Chennai India. Department of Physics Arignar Anna Govt. Arts College Cheyyar India Department of Physics University College of Engineering Arni (A Constituent College of Anna University Chennai) Arni India

Alumina (Al2O3) has been synthesized through combustion synthesis (CS) technique. The calcined products were characterized using X-ray diffractional analysis (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermo-gravimetric analysis (TGA). TG-DTA results reveal the various stages involved in transition from γ-phase to α-Al2O3 phase. The first phase γ-Al2O3 was presented in the temperature range from 600°C-875°C as deduced from the XRD patterns with cubic crystal structure. The second stage occurs in the temperature range from 900°C-1000°C. In the final step, above 1000°C, the aluminium oxide appears completely as α-Al2O3, showing high crystallinity. The particle sizes are closely related to γ- to α-Al2O3 phase transition.

关键词： Nanocrystalline Al2O3 Phase Transitions γ-Al2O3 α-Al2O3 Differential Scanning Calorimetry (DSC) Electron Microscopy (TEM and SEM)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Study on Enhanced Antibacterial and Cytotoxicity of Pure and Cadmium Doped Cerium Oxide against Gram-Positive and Gram-Negative Bacteria

引用

Soft Nanoscience Letters 2019年第1期9卷 1-16页

作者： Killivalavan Govindarasu Kavitha Gnanasekaran sathyaseelan balaraman Baskaran Iruson Senthilnathan Krishnamoorthy sathyaseelan balaraman Babu Padmaraj Elayaperumal Manikandan Sivakumar Dhananjayan Department of Physics Bharathiar University Coimbatore India P. G. Research & Department of Physics A. M. Jain College Meenambakkam India Department of Physics University College of Engineering Arni (A Constituent College of Anna University Chennai)Arni India Department of Physics University College of Engineering Arni (A Constituent College of Anna University Chennai)ArniIndia Department of Physics Arignar Anna Govt. Arts College Cheyyar Tamil Nadu India Department of Physics VIT University Vellore India Department of Physics Thiruvalluvar University TUCAS Campus Thennangur India UNESCO UNISA Africa Chair in Nanosciences & Nanotechnology College of Graduate Studies University of South Africa Muckleneuk Ridge Pretoria South Africa Department of Physics Sree Krishna College of Engineering Unai Anai India

Pure and Cadmium (Cd) doped Cerium oxide nanoparticles (CeNPs) have been synthesised by the simple chemical co-precipitation technique. Cadmium ions of concentrations 1, 3 and 5 mol% were doped to investigate their influence on the structural and optical properties of CeO2. The synthesised samples have been subjected to X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis and high-resolution transmission electron microscopy (HRTEM). The XRD and Raman patterns have witnessed the cubic structure of the cerium oxide nanoparticles. The average particle size of CeO2 was found to be around 10 nm. SEM image has also ascertained that the grain size of pure CeO2 appeared is bigger than that of the Cd-doped, which intern indicates the grain growth upon doping. Besides, the antibacterial activity of the cadmium doped cerium oxide nanoparticles against some human pathogens revealed that they have exhibited the maximum zone of inhibition against gram-positive bacteria than the gram-negative species. Further, the cytotoxic effect of Cd-doped CeO2 sample is examined in cultured (MCF-7, A549 and Hep-2) cell.

关键词： Co-Precipitation XRD SEM HRTEM Antibacterial Activity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect on Optical and Antibacterial Activity of SnO₂ and CuO Blended SnO₂ Nanoparticles

引用

Soft Nanoscience Letters 2023年第2期13卷 1-12页

作者： Suresh Gopal Baskaran Iruson sathyaseelan balaraman Senthilnathan Krishnmoorthy Manikandan Elayaperumal Department of Physics Arignar Anna Govt. Arts College Cheyyar India Department of Physics University College of Engineering Arni (A Constituent College of Anna University Chennai) Arni India Department of Physics VIT University Vellore India Department of Physics Thiruvalluvar University TVUCAS Campus Thennangur India

Nanocrystalline SnO2 and CuO doped with SnO2 were prepared by the co-precipitation method and characterized for different physiochemical properties and microbiological activity. The composition and morphological formation were characterized by XRD, HRTEM, Raman, FTIR, and UV-vis spectroscopy. The Powder X-ray analysis reveals that Sn4+ ions have substituted the Cu2+ ions without changing the monoclinic structure of SnO2 but the average particle size of the SnO2 and CuO doped SnO2 samples from 11 and 5 nm respectively. However, it exhibits an inhibiting strong bacterial growth against tested bacterial strains.

关键词： SnO2 CuO Doped SnO2 Physiochemical Properties Microbiological Activity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect on Optical and Antibacterial Activity of SnO2 and CuO Blended SnO2 Nanoparticles

引用

Soft Nanoscience Letters（软纳米科学报） 2023年第2期

作者： Suresh Gopal Baskaran Iruson sathyaseelan balaraman Senthilnathan Krishnmoorthy Manikandan Elayaperumal

来源：博看期刊评论

在线全文

博看期刊

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

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

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：