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Kim, Yong Hwan
School of Energy and Chemical Engineering
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  • 바이오촉매 생물 전환 생물환경

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Unassisted solar lignin valorisation using a compartmented photo-electro-biochemical cell

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Title
Unassisted solar lignin valorisation using a compartmented photo-electro-biochemical cell
Author
Ko, MyohwaPham, Le Thanh MaiSa, Young JinWoo, JinwooNguyen, Trang Vu ThienKim, Jae HyungOh, DongrakSharma, PankajRyu, JungkiShin, Tae JooJoo, Sang HoonKim, Yong HwanJang, Ji-Wook
Issue Date
2019-11
Publisher
Nature Publishing Group
Citation
NATURE COMMUNICATIONS, v.10, pp.5123
Abstract
Lignin is a major component of lignocellulosic biomass. Although it is highly recalcitrant to break down, it is a very abundant natural source of valuable aromatic carbons. Thus, the effective valorisation of lignin is crucial for realising a sustainable biorefinery chain. Here, we report a compartmented photo-electro-biochemical system for unassisted, selective, and stable lignin valorisation, in which a TiO2 photocatalyst, an atomically dispersed Co-based electrocatalyst, and a biocatalyst (lignin peroxidase isozyme H8, horseradish peroxidase) are integrated, such that each system is separated using Nafion and cellulose membranes. This cell design enables lignin valorisation upon irradiation with sunlight without the need for any additional bias or sacrificial agent and allows the protection of the biocatalyst from enzymedamaging elements, such as reactive radicals, gas bubbles, and light. The photo-electrobiochemical system is able to catalyse lignin depolymerisation with a 98.7% selectivity and polymerisation with a 73.3% yield using coniferyl alcohol, a lignin monomer.
URI
https://scholarworks.unist.ac.kr/handle/201301/30610
URL
https://www.nature.com/articles/s41467-019-13022-7
DOI
10.1038/s41467-019-13022-7
ISSN
2041-1723
Appears in Collections:
UCRF_Journal Papers
ECHE_Journal Papers
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