Abstract
Although TiO2-based nanostructures with unique chemical and physical properties exhibit great promise in water treatment and energy conversion/storage, there still exist some limitations. In order to further improve the photochemical properties, one-dimension (1D) TiO2 nanoarrays on the substrate are primarily combined with graphene by various preparation technologies. The composite coating has exhibited extraordinary photocatalytic abilities in the degradation of organic pollutants into less toxic compounds, antimicrobial activity and adsorption capacity in water treatment. Especially, it is easy to recycle after photocatalytic reaction. Additionally, TiO2 nanoarrays/graphene on the substrate (especially flexible substrate) could provide potential opportunities for flexible-device fabrication with excellent photovoltaic conversion efficiency and electrochemical performance in energy conversion/storage devices. As far as we know, the relevant reviews have rarely been reported. Here, we present a comprehensive review on the preparation of TiO2 nanoarrays or TiO2 nanoarrays/graphene, and their application and mechanism in water treatment and energy conversion/storage.
摘要
虽然TiO2基纳米材料具有独特的化学物理特性, 在水处理和能量转换与储存中展现出广阔的前景, 但仍然存在一些局限性. 为了进一步提高其光化学特性, 基于各种合成技术在基体表面制备一维的TiO2纳米阵列通常与石墨烯进行复合. 这种复合涂层具有优异的光催化性能以及优异的杀菌和吸附性能. 尤其是这种复合材料经过光催化处理后, 很容易回收再利用. 另外, 基体(尤其是柔性基体)表面的TiO2纳米阵列∕石墨烯复合涂层可以制备具有优异光电转化效率和光化学特性的柔性设备, 在能量转化和存储中具有潜在的应用价值.
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This work was supported by the National Natural Science Foundation for Distinguished Young Scholars (51425204).
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Author contributions Fan Y and Mai L proposed the topic and outline of the manuscript. Fan Y and Yu S collected the related information needed in writing the paper; Fan Y and Mai L co-wrote the manuscript. Hu G, Yu S and Xu L modified this manuscript. All authors discussed and commented on the manuscript.
Conflict of interest The authors declare no conflict of interest.
Yanhua Fan received her PhD degree from Department of Chemistry and Chemical Engineering at Ocean University of China in 2009. She joined the Shanghai Maritime University as lecturer in 2009. As a visiting scholar, she worked at State Key Laboratory of Advanced Technology for Materials Synthesis and Processing in Wuhan University of Technology from 2017 to 2018. Her research interest is mainly focused on the synthesis of nanostructured materials for environment and energy device applications.
Liqiang Mai is Chair Professor of Materials Science and Engineering at Wuhan University of Technology (WUT). He is Changjiang Scholar Professor, Distinguished Young Scholar of the National Science Foundation of China. He received his PhD from WUT in 2004 and carried out his postdoctoral research in the laboratory of Prof. Zhonglin Wang at Georgia Institute of Technology in 2006–2007. He worked as advanced research scholar in the laboratory of Prof. Charles M. Lieber at Harvard University in 2008–2011 and Prof. Peidong Yang’s group at University of California, Berkeley in 2017. His current research interests focus on nanomaterials and devices for energy storage.
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Fan, Y., Hu, G., Yu, S. et al. Recent advances in TiO2 nanoarrays/graphene for water treatment and energy conversion/storage. Sci. China Mater. 62, 325–340 (2019). https://doi.org/10.1007/s40843-018-9346-3
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DOI: https://doi.org/10.1007/s40843-018-9346-3