Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method

We present a facile strategy to synthesize bulk hierarchical porous Pd materials (BHPPd) with pores ranging from a few nanometers to tens of micrometers through chemical dealloying of porous PdAl intermetallics. Owing to the small surface diffusivities of Pd atoms, the pore/ligament size of BHPPd di...

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Main Authors:	Wei Feng, Qingquan Kong, Xiaodong Zhu, Xinxin Xie, Huajiang Zhou, Youxu Qiu, Chenghua Sun
Format:	Article
Language:	English
Published:	Hindawi Limited 2018-01-01
Series:	Journal of Nanomaterials
Online Access:	http://dx.doi.org/10.1155/2018/3532621

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record_format	Article
spelling	doaj-8f20871616164332b09dc0e02f4950e12020-11-24T20:54:57ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292018-01-01201810.1155/2018/35326213532621Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying MethodWei Feng0Qingquan Kong1Xiaodong Zhu2Xinxin Xie3Huajiang Zhou4Youxu Qiu5Chenghua Sun6School of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaInvestment Promotion Agency, State High- and New-Tech Industrial Development Zone of Zigong, Zigong 643000, ChinaDepartment of Chemistry and Biotechnology, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, AustraliaWe present a facile strategy to synthesize bulk hierarchical porous Pd materials (BHPPd) with pores ranging from a few nanometers to tens of micrometers through chemical dealloying of porous PdAl intermetallics. Owing to the small surface diffusivities of Pd atoms, the pore/ligament size of BHPPd did not coarsen remarkably as the concentration of HCl aqueous solution increases. Thermal stability properties of BHPPd materials at different temperature ranging from 673 to 1073 K were evaluated. BHPPd materials show superior thermal stability, whose bicontinuous interpenetrating ligament-channel structure can be maintained even after being annealed at 1073 K for 30 min. Such properties can be attributed to less defects and less-noble metal residues. Moreover, compression properties of BHPPd materials were also investigated.http://dx.doi.org/10.1155/2018/3532621
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Wei Feng Qingquan Kong Xiaodong Zhu Xinxin Xie Huajiang Zhou Youxu Qiu Chenghua Sun
spellingShingle	Wei Feng Qingquan Kong Xiaodong Zhu Xinxin Xie Huajiang Zhou Youxu Qiu Chenghua Sun Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method Journal of Nanomaterials
author_facet	Wei Feng Qingquan Kong Xiaodong Zhu Xinxin Xie Huajiang Zhou Youxu Qiu Chenghua Sun
author_sort	Wei Feng
title	Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method
title_short	Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method
title_full	Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method
title_fullStr	Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method
title_full_unstemmed	Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method
title_sort	characterization and thermal stability properties of bulk hierarchical porous pd prepared by kirkendall effect and dealloying method
publisher	Hindawi Limited
series	Journal of Nanomaterials
issn	1687-4110 1687-4129
publishDate	2018-01-01
description	We present a facile strategy to synthesize bulk hierarchical porous Pd materials (BHPPd) with pores ranging from a few nanometers to tens of micrometers through chemical dealloying of porous PdAl intermetallics. Owing to the small surface diffusivities of Pd atoms, the pore/ligament size of BHPPd did not coarsen remarkably as the concentration of HCl aqueous solution increases. Thermal stability properties of BHPPd materials at different temperature ranging from 673 to 1073 K were evaluated. BHPPd materials show superior thermal stability, whose bicontinuous interpenetrating ligament-channel structure can be maintained even after being annealed at 1073 K for 30 min. Such properties can be attributed to less defects and less-noble metal residues. Moreover, compression properties of BHPPd materials were also investigated.
url	http://dx.doi.org/10.1155/2018/3532621
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Characterization and Thermal Stability Properties of Bulk Hierarchical Porous Pd Prepared by Kirkendall Effect and Dealloying Method

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