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DOI	10.1039/d1ee00587a
	The bionic sunflower: A bio-inspired autonomous light tracking photocatalytic system
	Qin J.; Chu K.; Huang Y.; Zhu X.; Hofkens J.; He G.; Parkin I.P.; Lai F.; Liu T.
发表日期	2021
ISSN	17545692
起始页码	3931
结束页码	3937
卷号	14 期号:7
英文摘要	Developing a self-adapting photocatalytic system that efficiently captures light all day is not only a dream but also a challenge. Here, we report a 'bionic sunflower' based on a light-responsive smart hydrogel, which can spontaneously track and orient itself directionally to a light source, mimicking phototropism in, e.g., plants. As a novel photocatalytic system, it can efficiently recover the oblique-incidence energy-density loss and maintain photocatalytic efficiency at the maximum level at any random incidence angle from 0 to 90°. By taking the photocatalysis of H2O2 generation as an example, the bionic sunflower displays a high H2O2 yield rate of 262.1 μmol g-1 h-1 under 90° irradiation, as compared with the same photocatalytic system without phototropism (83.5 μmol g-1 h-1). Theoretical analyses with COMSOL Multiphysics simulation and density functional theory (DFT) calculations reveal the mechanism behind the actuation motion that triggers the bending of the bionic sunflower and determine the active sites for H2O2 generation during photocatalysis. This work proposes a novel photocatalytic concept to boost any traditional photocatalytic reaction by optimally using the solar energy from the sun's passage. © The Royal Society of Chemistry.
英文关键词	Biomimetics; Density functional theory; Hydrogen peroxide; Light sources; Photocatalysis; Solar energy; Comsol multiphysics; Incidence angles; Oblique incidence; Photo-catalytic; Photocatalytic efficiency; Photocatalytic reactions; Photocatalytic systems; Smart hydrogels; Bionics; catalysis; photodegradation; simulation; tracking; Helianthus
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190611
作者单位	The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, International Joint Research Laboratory for Nano Energy Composites, Jiangnan University, Wuxi, 214122, China; Department of Chemistry, Ku Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium; Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany; Christopher Ingold Laboratory, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom
推荐引用方式 GB/T 7714	Qin J.,Chu K.,Huang Y.,et al. The bionic sunflower: A bio-inspired autonomous light tracking photocatalytic system[J],2021,14(7).
APA	Qin J..,Chu K..,Huang Y..,Zhu X..,Hofkens J..,...&Liu T..(2021).The bionic sunflower: A bio-inspired autonomous light tracking photocatalytic system.Energy & Environmental Science,14(7).
MLA	Qin J.,et al."The bionic sunflower: A bio-inspired autonomous light tracking photocatalytic system".Energy & Environmental Science 14.7(2021).