检索结果-南通市图书馆

P-Doped Titania Xerogels as Efficient UV-Visible Photocatalysts

Journal of Materials Science and Chemical Engineering 2014年第8期2卷 17-32页

作者： Céline J.Bodson Sophie L.pirard rené pirard Ludivine Tasseroul Catherine Bied Michel Wong Chi Man Benoit Heinrichs Stéphanie D.Lambert Laboratory of Chemical Engineering—Nanomaterials CatalysisElectrochemistryUniversity of LiegeLiegeBelgium Charles Gerhardt Montpellier Institute(UMR5253 CNRS-UM2-ENSCM-UM1) MontpellierFrance

In the present study, sol-gel process is used to synthesize P-doped TiO2 xerogels by the cogelation method of a functionalized P alkoxide, (NH2-(CH2)2-NH-(CH2)2-P(O)-(OC2H5)2) with Ti(OC3H7)4 in either 2-methoxyethanol or isopropanol. The phosphorus-doping improved the thermal stability of titania and decreased the phase transformation of anatase into rutile. This modification by phosphorus shifted the absorption edge of titania to the visible region as proved by Diffuse reflectance measurements, and thus offers the possibility to produce visible light effective TiO2 photocatalyst. The excellent photocatalytic activity of P-doped TiO2 xerogels compared to pure TiO2 could be explained by its high surface area and small TiO2-anatase crystallite size. From these results, it was proved by using three different models that phosphorus intrinsically influences the photocatalytic activity.

关键词： TiO_(2) xerogel Phosphorus-Doping Sol-Gel p-Nitrophenol Degradation Photocatalysis

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

Large-scale industrial manufacturing of carbon nanotubes in a continuous inclined mobile-bed rotating reactor via the catalytic chemical vapor deposition process

引用

Frontiers of Chemical Science and Engineering 2017年第2期11卷 280-289页

作者： Sophie L. pirard Sigrid Douven Jean-Paul pirard Laboratory of Chemical Engineering Department of Chemical Engineering University of Liege B-4000 Liege Belgium

This article reports the different steps of the design, development and validation of a process for continuous production of carbon nanotubes （CNTs） via catalytic chemical vapor deposition from the laboratory scale to the industrial production. This process is based on a continuous inclined mobile-bed rotating reactor and very active catalysts using methane or ethylene as carbon source. The importance of modeling taking into account the hydrodynamic, physicochemical and physical phenomena that occur during CNT production in the process analysis is emphasized. The impact of this invention on the environment and human health is taken into consideration too.

关键词： carbon nanotubes catalytic chemical vapor deposition inclined rotating reactor industrial process scaling-up

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

发展到Ka频段的Italsat卫星

引用

电信快报 1989年第5期 15-16页

作者： pirard,T 余佩芳

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

含3%双氯芬酸的2.5%透明质酸钠凝胶治疗光化性角化病:对近期研究的一项荟萃分析

引用

世界核心医学期刊文摘（皮肤病学分册） 2006年第2期2卷 27-27页

作者： pirard D. Vereecken P. Mélot C. Heenen M. 王琼 Department of Dermatology Erasme Hospital Erasme Universitary Hospital Route de Lennik 808 1070 Brussels Belgium

Three percent diclofenac in 2.5% hyaluronan gel (DHA) is approved by the Food and Drug Administration (FDA) in the treatment of actinic keratoses (AK). We conducted a meta- analysis of the few prospective studies that evaluated the effect of DHA on the target lesion number score TLNS0 (indicating complete resolution of all target lesions in the treatment area) and/or the cumulative target lesion number score CLNS0 (indicating resolution of the target and new lesions in the treatment area) with assessment 30 days after the end of treatment. A comprehensive search of the 1966- 2005 MEDLINE database and reviewof the reference lists of relevant articles identified the published randomised trials. Three studies were included, with a total of 364 patients. The placebowas the hyaluronan vehicule gel (HAV). The intention- to- treat analyses show that DHA significantly improve the TLNS0 (OR= 3.72; 95% CI=2.05- 6.74) and the CLNS0 (OR=4.09; 95% CI=2.55- 6.56) compare to HAV. Overall, 42/106 (39.6% CI: 30.8- 49.1% ) had a TLNS0 with mean treatment duration of 75 days ± 21 [mean± standard deviation (SD)], and 70/179 (39.1% CI: 32.3- 46.4% ) patients had a CLNS0 with a mean 78 days± 16 treatment duration. DHA is effective compared to HAV in the treatment of AK. Further studies should establish subgroup analyses according to sites and severity of the AK lesions in order to determine if more patients could be improved in restricted indications. Biopsies, a longer follow- up evaluation, and comparisons with the other treatments of AK will also be helpful in the future to define the place of this treatment in the management of AK.

关键词：透明质酸钠凝胶光化性角化病双氯芬酸荟萃分析皮损消退食品与药品严重度本项群分析随访评

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

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：