气候变化领域集成服务门户(CCPortal): Manipulation of planar oxygen defect arrangements in multifunctional magnèli titanium oxide hybrid systems: From energy conversion to water treatment

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DOI	10.1039/d0ee02550j
	Manipulation of planar oxygen defect arrangements in multifunctional magnèli titanium oxide hybrid systems: From energy conversion to water treatment
	Liu Y.; Yang J.; Liu Y.; Zheng J.; Lee W.; Shi J.; Horlyck J.; Xie J.; Tay Y.Y.; Tan T.T.; Yu D.; Mole R.; McIntyre G.; Zhang C.; Toe C.Y.; Waite T.D.; Scott J.; Wang Y.; Wu T.; Han S.; Li S.
发表日期	2020
ISSN	17545692
起始页码	5080
结束页码	5096
卷号	13 期号:12
英文摘要	An extremely close relationship exists between energy usage and water supply with a tremendous amount of energy being consumed to process water for drinking and other purposes. The current energy crisis and inefficient water management place enormous stress on the sustainability of our society and environment. As such, the development of high-efficiency, cost-effective, and environmentally friendly materials which possess co-existing functionalities for applications ranging from energy capture to water treatment in one material, provides an opportunity to achieve sustainable development. As multifunctional materials, the layer-structured Magnèli titanium oxides with stoichiometry of TinO2n-1 (n ≥ 2) have been extensively studied in view of their potential for photocatalytic, thermoelectric and photothermal applications over the past few years. This group of materials occurs naturally as layered structures with planar oxygen defects, however, understanding of the correlation between the planar arrangements of the oxygen defects and various energy-related properties remains limited. Here, we demonstrate how the formation of layer structured TinO2n-1 with various planar oxygen defect arrangements correlates with the changes of their physical and chemical properties. The experimental results from inelastic neutron scattering analysis and electrical characterizations provide evidence that the planar oxygen defects are responsible for phonon scattering and exert a strong influence on their electrical conductivities. Manipulating these planar defects allows interconversion between different phases, which changes the interplay between electronic and phononic sub-systems. These manipulations potentially enable optimization of the corresponding physical properties of these materials such that they are rendered suitable for applications that require co-operative multifunctionality. More specifically, the experimental results demonstrate that the valence band positions and the onset potentials in the materials are raised, further enhancing their ability for catalysis of electrochemical reactions. This work also demonstrates the combinational effects of the thermoelectric and photothermal properties of these materials on their photocatalytic and electrochemical performance thereby providing a novel means of controlling the multi-response functionality of these materials for a variety of applications in different environments. This journal is © The Royal Society of Chemistry.
英文关键词	Cost effectiveness; Defects; Energy policy; Hybrid systems; Materials properties; Neutron scattering; Oxygen; Photocatalytic activity; Potable water; Sustainable development; Thermoelectric energy conversion; Titanium oxides; Water supply; Electrical characterization; Electrical conductivity; Electrochemical performance; Electrochemical reactions; Multi-functional materials; Photothermal applications; Photothermal properties; Physical and chemical properties; Water treatment; energy conservation; energy efficiency; hypoxic conditions; oxide; oxygen; titanium; water treatment
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/189435
作者单位	Unsw Materials and Manufacturing Futures Institute, School of Material Science and Engineering, University of New South Wales, Kensington, NSW 2052, Australia; Australian Nuclear Science and Technology Organization, New Illawarra RoadNSW 2234, Australia; School of Chemical Engineering, University of New South Wales, Kensington, NSW 2052, Australia; Unsw Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Kensington, NSW 2052, Australia; School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore; Mark Wainwright Analytical Centre, University of New South Wales, Kensington, NSW 2052, Australia; Department of Physics, Shandong University, 27 Shanda Nanlu, Jinan, Shangdong 250100, China
推荐引用方式 GB/T 7714	Liu Y.,Yang J.,Liu Y.,et al. Manipulation of planar oxygen defect arrangements in multifunctional magnèli titanium oxide hybrid systems: From energy conversion to water treatment[J],2020,13(12).
APA	Liu Y..,Yang J..,Liu Y..,Zheng J..,Lee W..,...&Li S..(2020).Manipulation of planar oxygen defect arrangements in multifunctional magnèli titanium oxide hybrid systems: From energy conversion to water treatment.Energy & Environmental Science,13(12).
MLA	Liu Y.,et al."Manipulation of planar oxygen defect arrangements in multifunctional magnèli titanium oxide hybrid systems: From energy conversion to water treatment".Energy & Environmental Science 13.12(2020).