[vc_empty_space][vc_empty_space]
Continuous mesoporous Pd films with tunable pore sizes through polymeric micelle-assisted assembly
Iqbal M.a,b,c, Kaneti Y.V.a, Kashimura K.d, Yoshino M.d, Jiang B.a, Li C.a, Yuliarto B.b, Bando Y.a,e,f, Sugahara Y.c, Yamauchi Y.g,h
a International Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
b Department of Engineering Physics, Research Center for Nanoscience and Nanotechnology, Institute of Technology Bandung, Bandung, 40132, Indonesia
c Department of Nanoscience and Nanoengineering, Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan
d RandD Division, Yoshino Denka Kogyo Inc., Saitama, 342-0008, Japan
e Institute of Molecular Plus, Tianjin University, Tianjin, 300072, China
f Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, 2500, Australia
g School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, Brisbane, 4072, Australia
h Department of Plant and Environmental New Resources, Kyung Hee University, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 The Royal Society of Chemistry.Mesoporous metallic films have shown enhanced catalytic performance for numerous electrocatalytic applications, such as electrooxidation of liquid fuels (ethanol, methanol, etc.) and biomolecules (glucose, maltose, etc.). Previously, our group has demonstrated the feasible fabrication of mesoporous Pd thin films using low-molecular-weight surfactants as templates (e.g. C. Li, B. Jiang, N. Miyamoto, J. H. Kim, V. Malgras and Y. Yamauchi, J. Am. Chem. Soc. 2015, 137, 11558-11561). However, the resulting pore size is typically limited to 2-10 nm, which may be disadvantageous for practical applications. This work demonstrates a breakthrough in the fabrication of mesoporous palladium (Pd) films with larger and tunable pore sizes from 14 to 41 nm using polymeric micelle-assisted electrochemical deposition. The average pore size of the resulting mesoporous Pd films can be conveniently tuned by employing block copolymers (PS-b-PEO) with different molecular weights. Mesoporous Pd films with larger average pore sizes exhibit higher mass activities for the ethanol oxidation reaction (EOR) than those with smaller average pore sizes along with superior electrocatalytic stability compared to commercially available Pd catalyst. It is anticipated that the proposed soft-templated approach can be extended to the preparation of other mesoporous metallic films for various electrocatalytic applications.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Catalytic performance,Electrocatalytic,Ethanol oxidation reaction,Low molecular weight,Mass activity,Pd catalyst,Pd thin films,Polymeric micelle[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work was supported by an Australian Research Council (ARC) Future Fellowship (grant FT150100479) and the research fund from the Suzuken Memorial Foundation. This work was performed in part at the Queensland Node of the Australian National Fabrication Facility, a company established under the National Collaborative Research Infrastructure Strategy to provide nano-and micro-fabrication facilities for Australia’s researchers. M. I. would like to thank the Indonesia Endowment Fund for Education (LPDP) for the financial support.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1039/c8nh00507a[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]