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Bio-Metabolism-Driven Crystalline-Engineering of CdS Quantum Dots for Highly Active Photocatalytic H-2 Evolution

文献类型： 外文期刊

作者： Xu, Li-Xia 1 ; Wang, Yan-Zhai 1 ; Zhou, Dao 1 ; Chen, Meng-Yuan 1 ; Yang, Xue-Jin 1 ; Ye, Xiao-Mei 2 ; Yong, Yang-Chun 1 ;

作者机构： 1.Jiangsu Univ, Biofuels Inst, Sch Environm & Safety Engn, Zhenjiang 212013, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Crop & Anim Integrated Farming, Nanjing 210014, Jiangsu, Peoples R China

关键词： Biosynthesis; Crystalline engineering; Hydrogen; Photocatalysis; Quantum dots

期刊名称：CHEMISTRYSELECT （ 影响因子：2.109； 五年影响因子：2.054 ）

ISSN： 2365-6549

年卷期： 2021 年 6 卷 15 期

页码：

收录情况： SCI

摘要： Biosynthesis was considered as a green and sustainable approach for nanomaterials fabrication. However, it is still quite challenging to fine tune the biosynthesis process for high-quality photocatalytic nanomaterials. In this study, an aerobic approach for biosynthesis of photocatalytic CdS quantum dots (QDs) by Shewanella oneidensis MR-1 was developed. Interestingly, it was found that by simply tuning the concentration of substrates, the crystalline structure of the CdS QDs was transformed between cubic phase and hexagonal phase. The hexagonal CdS QDs synthesized by simple substrate-metabolism regulation exhibited high photocatalytic H-2 evolution activity (21 mmol H-2/g CdS/h), which was the highest record for CdS QDs. This finding demonstrated the possibility to well control the crystalline structure of biosynthesized QDs by simple bio-metabolism regulation and provided a bio-metabolism-driven green route for crystalline engineering.

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