journal article·2021-05-25Open access

Compact Thermal Actuation by Water and Flexible Hydrophobic Nanopore

Mirosław Chorążewski, Paweł Zajdel, Tong Feng, Dong Luo, Alexander R. Lowe, Craig M. Brown, Juscelino B. Leão, Mian Li, Markus Bleuel, Grethe Jensen, Dan Li, Abdessamad Faik, Yaroslav Grosu

ACS Nano· Volume 15· Issue 5

Abstract

Efficient and compact energy conversion is at the heart of the sustainable development of humanity. In this work it is demonstrated that hydrophobic flexible nanoporous materials can be used for thermal-to-mechanical energy conversion when coupled with water. In particular, a reversible nonhysteretic wetting–drying (contraction–expansion) cycle provoked by periodic temperature fluctuations was realized for water and a superhydrophobic nanoporous Cu2(tebpz) MOF (tebpz = 3,3′,5,5′-tetraethyl-4,4′-bipyrazolate). A thermal-to-mechanical conversion efficiency of ∼30% was directly recorded by high-precision PVT-calorimetry, while the operational cycle was confirmed by in operando neutron scattering. The obtained results provide an alternative approach for compact energy conversion exploiting solid–liquid interfacial energy in nanoscopic flexible heterogeneous systems.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Thermal properties of materials · Nanopore and Nanochannel Transport Studies · Phase Equilibria and Thermodynamics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland

Institute of Physics, University of Silesia, ul. 75 Pulku Piechoty 1, 41-500 Chorzów, Poland

Department of Chemistry, Shantou University, Guangdong 515063, China

College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China

Chemical and Biochemical Department, University of Delaware, Newark, Delaware 19716, United States

NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States

Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742-2115, United States

Materials Science, Energy and Nano-engineering Department, University Mohammed VI Polytechnic, Ben Guerir 43150, Morocco

Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain

Funding

National Institute of Standards and Technology · Narodowe Centrum Nauki · U.S. Department of Commerce · National Science Foundation

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