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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c00254
|2 doi
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|a pubmed24n1179.xml
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|a (NLM)36880648
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Yu, Haoyuan
|e verfasserin
|4 aut
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|a Enhanced Photothermal Steam Generation and Gold Using the Efficiency of Ultralight Gold Foam with Hierarchical Porosity
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 21.03.2023
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|a Date Revised 21.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Controlling the optical properties of metal plasma nanomaterials through structure manipulation has attracted great attention for solar steam generation. However, realizing broadband solar absorption for high-efficiency vapor generation is still challenging. In this work, a free-standing ultralight gold film/foam with a hierarchical porous microstructure and high porosity is obtained through controllably etching a designed cold-rolled (NiCoFeCr)99Au1 high-entropy precursor alloy with a unique grain texture. During chemical dealloying, the high-entropy precursor went through anisotropic contraction, resulting in a larger surface area compared with that from the Cu99Au1 precursor although the volume shrinkage is similar (over 85%), which is beneficial for the photothermal conversion. The low Au content also results in a special hierarchical lamellar microstructure with both micropores and nanopores within each lamella, which significantly broadens the optical absorption range and makes the optical absorption of the porous film reach 71.1-94.6% between 250 and 2500 nm. In addition, the free-standing nanoporous gold film has excellent hydrophilicity, with the contact angle reaching zero within 2.2 s. Thus, the 28 h dealloyed nanoporous gold film (NPG-28) exhibits a rapid evaporation rate of seawater under 1 kW m-2 light intensity, reaching 1.53 kg m-2 h-1, and the photothermal conversion efficiency reaches 96.28%. This work demonstrates the enhanced noble metal gold using efficiency and solar thermal conversion efficiency by controlled anisotropic shrinkage and forming a hierarchical porous foam
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|a Journal Article
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1 |
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|a Hu, Yixuan
|e verfasserin
|4 aut
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|a Zhang, Jiawei
|e verfasserin
|4 aut
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|a Reddy, Kolan Madhav
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Wei-Hong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jia, Henglei
|e verfasserin
|4 aut
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| 700 |
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|a Zhao, Yi-Lu
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Xingjun
|e verfasserin
|4 aut
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| 700 |
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|a Qiu, Hua-Jun
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 39(2023), 11 vom: 21. März, Seite 4190-4197
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:39
|g year:2023
|g number:11
|g day:21
|g month:03
|g pages:4190-4197
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|u http://dx.doi.org/10.1021/acs.langmuir.3c00254
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