学術雑誌論文

学術雑誌論文

text

Chemistry of Materials. 2022, 34(16), p. 7379-7388

Semicarbonized Subwavelength-Nanopore-Structured Nanocellulose Paper for Applications in Solar Thermal Heating

American Chemical Society

英語

text

2022-08-23

https://doi.org/10.1021/acs.chemmater.2c01466

Thanakorn Yeamsuksawat, Yoshitaka Morishita, Jun Shirahama, Yintong Huang, Takaaki Kasuga, Masaya Nogi, and Hirotaka Koga, Semicarbonized Subwavelength-Nanopore-Structured Nanocellulose Paper for Applications in Solar Thermal Heating, Chem. Mater. 2022, 34, 16, 7379–7388. ©2022 American Chemical Society.

Recently, there has been remarkable progress in solar thermal heating by applying biomass-derived carbons, which can absorb and convert solar light into thermal energy. The design of subwavelength nanoporous and molecular structures of biomass-derived carbons is required for suppressed reflection and enhanced absorption of solar light. However, such designs are difficult because conventional biomass-derived carbons exhibit intrinsic microstructures and are prepared under specific carbonization conditions. In this study, a wood cellulose nanofiber-derived carbon is proposed to tailor both subwavelength nanoporous and molecular structures. Cellulose nanofibers are first constructed into a paper, denoted as "nanopaper", exhibiting subwavelength nanoporous structures by tailoring the pore spaces between cellulose nanofibers. The as-prepared nanopaper is then carbonized at various controlled temperatures to tailor the cellulose molecular structure, i.e., grow graphitic carbon domains. The graphitic carbon domains grown by semicarbonization at 500 °C adequately balance solar absorption and reflection, while the subwavelength nanoporous structures suppress solar reflection. Thus, the semicarbonized nanopaper with tailored nanoporous and molecular structures exhibits superior solar thermal heating to competitive nanocarbons, also affording thermoelectric power generation. This study can guide the structural and functional design of bionanocarbons for solar thermal heating.

This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chem. Mater., © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.chemmater.2c01466.

89420

Semicarbonized Subwavelength-Nanopore-Structured Nanocellulose Paper for Applications in Solar Thermal Heating

American Chemical Society

英語

2022-08-23

Chemistry of Materials

34

16

7379

7388

https://doi.org/10.1021/acs.chemmater.2c01466

https://hdl.handle.net/11094/89420