Interspersing CdS nanodots into iodine vacancy-rich BiOI sphere for photocatalytic lignin valorization

Flower-like BiOI was decorated by CdS nanodots and followed by the introduction of iodine vacancies (VI) for photocatalytic sodium lignosulfonate (SLS) valorization under visible light. The iodine vacancies could adjust the band configuration, strengthen the light absorption and act as electron trap...

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Bibliographic Details
Published in:International journal of biological macromolecules 2023-02, Vol.227, p.1317-1324
Main Authors: Dai, Dingliang, Qiu, Jianhao, Xia, Guanglu, Zhang, Lu, Ma, Hong, Yang, Luan, Yao, Jianfeng
Format: Article
Language:English
Subjects:
Alkalies
Benzaldehydes
Iodine
Lignin
Lignin valorization
Photocatalysis
Vanillin
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Summary:Flower-like BiOI was decorated by CdS nanodots and followed by the introduction of iodine vacancies (VI) for photocatalytic sodium lignosulfonate (SLS) valorization under visible light. The iodine vacancies could adjust the band configuration, strengthen the light absorption and act as electron traps, while the intimate contact between BiOI and CdS nanodots provides a high-speed channel for charge transfer. As a consequence, the photocatalytic performance of SLS conversion into value-added vanillin was greatly improved over CdS/BiOI-VI compared with those of CdS, BiOI and CdS/BiOI. The highest yield of vanillin is 10.95 mg/gSLS over CdS/BiOI-VI, about 5, 8.7, 1.3 times those of CdS, BiOI, CdS/BiOI, respectively, and exceeding most related photocatalysts reported elsewhere. More significantly, as to the lignin from Masson pine and alkali lignin, the corresponding vanillin yield can reach 7.04 and 6.54 mg/glignin, respectively, under the same condition, which suggests the great potential and universality for photocatalytic lignin valorization over such CdS/BiOI-VI heterostructure.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2022.12.007