化学化工学院机构知识库

Institutional Repository, College of Chemistry and Chemical Engineering

 

兰州大学机构库  > 化学化工学院  > 期刊论文
题名: Fibrous nano-silica containing immobilized Ni@Au core-shell nanoparticles: A highly active and reusable catalyst for the reduction of 4-nitrophenol and 2-nitroaniline
作者: Le, XD; Dong, ZP(董正平); Zhang, W; Li, XL; Ma, JT(马建泰)
收录类别: SCIE ; EI
出版日期: 2014-12
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷号: 395, 页码:58-65
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: A novel, dandelion-like fibrous nano-silica catalyst (Ni@Au/KCC-1) has been synthesized by modifying fibrous nano-silica (KCC-1) with Ni@Au core-shell nanoparticles (NPs). KCC-1 was prepared using a hydrothermal method and has a dandelion-like shape, high surface area, and easy accessibility; KCC-1 can also be functionalized with 3-mercaptopropyltriethoxysilane. The mercaptopropyl groups on the fibers act as robust anchors for the immobilization of Ni@Au NPs, thus preventing the aggregation of the Ni@Au NPs. We investigated the catalytic performance of the Ni@Au/KCC-1 nanocatalyst by reducing 4-nitrophenol to 4-aminophenol in the presence of NaBH4 as a probe reaction. The resulting Ni@Au/KCC1 nanocatalyst exhibited superior catalytic activity to Ni@Au NPs, which may be attributed to the high accessibility of the KCC-1 support material. To some extent, it also may be due to the poor aggregation of Ni@Au NPs on the KCC-1 nano-silica support. The Ni@Au/KCC-1 nanocatalyst also showed high catalytic activity when used to reduce 2-nitroaniline. It is noteworthy that using Ni cores to fabricate the active sites Ni@Au NPs resulted in a lower amount of Au needed than is typical, because most of the Au-NPs catalyzed reactions occur on the surfaces of the NPs. In addition, the Ni cores give the Ni@Au/KCC-1 nanocatalyst superparamagnetic properties that increase its ease of recovery by a powerful magnet, allowing for it to be reused. The abovementioned approach based on fibrous KCC-1 and Ni@Au NPs provided a useful platform for the fabrication of noble-metal-based nanocatalysts with easy accessibility and a low cost, which may allow for an efficient green alternative for various catalytic reductions. (C) 2014 Elsevier B.V. All rights reserved.
关键词: Fibrous nano-silica ; Ni@Au core-shell nanoparticles ; Reduction ; 4-Nitrophenol ; 2-Nitroaniline
作者部门: [Le, Xuanduong ; Dong, Zhengping ; Zhang, Wei ; Li, Xinlin ; Ma, Jiantai] Lanzhou Univ, Coll Chem & Chem Engn, Gansu Prov Engn Lab Chem Catalysis, Lanzhou 730000, Peoples R China
通讯作者: Dong, ZP (reprint author), Lanzhou Univ, Coll Chem & Chem Engn, Gansu Prov Engn Lab Chem Catalysis, Lanzhou 730000, Peoples R China.
学科分类: Chemistry
文章类型: Article
所属项目编号: NSFC [21301082] ; Natural Science Foundation of Gansu [1308RJYA028] ; Fundamental Research Funds for the Central Universities [lzujbky-2013-61]
所属项目名称: 国家自然科学基金项目 ; 中央高校基本科研业务费专项资金 ; 甘肃省青年科技基金计划
项目资助者: NSFC ; LZU ; GSSTD
语种: 英语
DOI: 10.1016/j.molcata.2014.08.002
ISSN号: 1381-1169
WOS记录号: WOS:000347498500008
EI记录号: 20144100088250
第一机构:
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/126403
Appears in Collections:化学化工学院_期刊论文

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Le, XD,Dong, ZP,Zhang, W,et al. Fibrous nano-silica containing immobilized Ni@Au core-shell nanoparticles: A highly active and reusable catalyst for the reduction of 4-nitrophenol and 2-nitroaniline[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2014,395:58-65.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Altmetrics Score
 
Google Scholar
Similar articles in Google Scholar
[Le, XD]'s Articles
[Dong, ZP]'s Articles
[Zhang, W]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Le, XD]‘s Articles
[Dong, ZP]‘s Articles
[Zhang, W]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Email:
Passwd
验 证:
换一张
Have you forgotten your password? Log In
Copyright © 2007-2018  兰州大学 - Feedback
Powered by CSpace