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서울대학교

Carbohydr. Polym., Available online 14 August 2023 | https://doi.org/10.1016/j.carbpol.2023.121299 Biophotovoltaic living hydrogel of an ion-crosslinked carboxymethylated cellulose nanofiber/alginate.

Hwarueon Lee ^a,b, Jinho Hyun ^a,b,c

^aDepartment of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea

^bDepartment of Agriculture, Forestry, and Bioresources, Seoul National University, Seoul 08826, Republic of Korea

^cResearch Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea

Corresponding author : Jinho Hyun

Abstract

Due to the low electrical power generation in liquid cultures of photosynthetic microalgae, a solid medium culture is demanded for the efficient design of biophotovoltaic (BPV) cells. In particular, the conductivity of the culture medium and the contact of microalgae with an electrode are crucial in harvesting electrons in BPV cells. Here, an ion-crosslinked carboxymethylated cellulose nanofiber (CM-CNF)/alginate is proposed as a living hydrogel for the green power generation of Chlorella vulgaris embedded in the hydrogel. The hydrogel crosslinked with Ca ²⁺ and Fe ³⁺ ions showed more efficient BPV properties than the hydrogel crosslinked with only Ca ²⁺ due to the increase of conductivity. The efficient transport of electrons generated by C. vulgaris improves the power generation of BPV cells. Moreover, the fluid channels imprinted in the living hydrogel maintain the viability of C. vulgaris even under the ambient environment by preventing the solid medium from being dried out.

논문정보

형식Research article
게재일2023년 08월 (BRIC 등록일 2023-10-17)
연구진국내 연구진
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