Fabrication of nanoporous Pd with superior hydrogen sensing properties by dealloying

被引：18
|
作者：
Zhang, Chi [1 ]
Ji, Hong [1 ]
Sun, Junzhe [1 ]
Kou, Tianyi [1 ]
Zhang, Zhonghua [1 ]
机构：
[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Ctr Adv Energy Mat & Technol Res, Sch Mat Sci & Engn,Minist Educ, Jinan 250061, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 92卷
基金：
中国国家自然科学基金;
关键词：
Nanoporous Pd; Dealloying; Sensors; Functional; SENSOR; PERFORMANCE; ARRAYS;
D O I：
10.1016/j.matlet.2012.10.123
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanoporous Pd ribbons can be fabricated by dealloying a rapidly solidified Al77Pd23 alloy under free corrosion conditions. The nanoporous Pd exhibits a typical bicontinuous interpenetrating cluster-channel structure. The clusters are composed of parallel rods, with large channels between them. The rods are also nanoporous and exhibit an ultrafine ligament/channel structure. Hydrogen sensing properties of the nanoporous Pd ribbons were investigated by measuring the electrical resistance changes of the samples under N-2-H-2 flow. Nanoporous Pd ribbons were found to have a quick response and a detection limit as low as 0.01 vol%. Considering the simplicity of fabrication as well as the good sensitivity, the present nanoporous Pd is promising in sensing applications. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：369 / 371
页数：3
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