The use of ultrasonic cavitation for near-surface structuring of robust and low-cost AlNi catalysts for hydrogen production

被引：37

作者：

Cherepanov, P. V. ^{[1
]}

Melnyk, I. ^{[1
]}

Skorb, E. V. ^{[2
]}

Fratzl, P. ^{[2
]}

Zolotoyabko, E. ^{[3
]}

Dubrovinskaia, N. ^{[4
]}

Dubrovinsky, L. ^{[5
]}

Avadhut, Y. S. ^{[6
]}

Senker, J. ^{[6
]}

Leppert, L. ^{[7
]}

Kuemmel, S. ^{[7
]}

Andreeva, D. V. ^{[1
]}

机构：

[1] Univ Bayreuth, Phys Chem 2, D-95440 Bayreuth, Germany

[2] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

[3] Technion Israel Inst Technol, Dept Mat Sci & Engn, IL-32000 Haifa, Israel

[4] Univ Bayreuth, Crystallog Lab, Mat Phys & Technol Extreme Condit, D-95440 Bayreuth, Germany

[5] Univ Bayreuth, Bayr Geoinst, D-95440 Bayreuth, Germany

[6] Univ Bayreuth, Inorgan Chem 3, D-95440 Bayreuth, Germany

[7] Univ Bayreuth, Theoret Phys 4, D-95440 Bayreuth, Germany

来源：

GREEN CHEMISTRY | 2015年 / 17卷 / 05期

关键词：

EVOLUTION REACTION; WILLIAMSON-HALL; ALLOY; SIZE;

D O I：

10.1039/c5gc00047e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ultrasonically induced shock waves stimulate intensive interparticle collisions in suspensions and create large local temperature gradients in AlNi particles. These trigger phase transformations at the surface rather than in the particle interior. We show that ultrasonic processing is an effective approach for developing the desired compositional gradients in nm-thick interfacial regions of metal alloys and formation of effective catalysts toward the hydrogen evolution reaction.

引用

页码：2745 / 2749

页数：5

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