Morphology and photocurrent response of TiO2 nanotubes prepared in electrolytes containing different content of polyethylene glycol

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-24 DOI:10.1016/j.ceramint.2024.09.330

Bowen Li , Chengyuan Li , Pengze Li , Zhiwen Zhang , Yunxuan Zhu , Bing Wang , Liyang Qin , Qianqiao Chen , Ye Song , Xufei Zhu

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引用次数: 0

Abstract

In order to investigate the effect of organic electrolytes on the photocurrent performance of TiO₂ nanotubes, four kinds of fluoride containing electrolyte were prepared. This work focuses on the effect of electrolyte on the photocurrent response of TiO₂ nanotubes. The results show that the electrolyte is an important influence on the photocurrent response. Appropriate proportion of polyethylene glycol (PEG) organic solvent can improve the performance of photocurrent response. The addition of excessive organic solvent will make TiO₂ nanotubes lose the ability of photocurrent response. Suitable surface porosity is a necessary condition for the sample to have photocurrent response. Too low porosity hinders the photoelectric property. The reason for the better photoelectric properties of the sample prepared in 50 wt% PEG electrolyte is explained by the ionic current and electronic current theory. The results show that a more stable ratio of accumulated charge by ionic and electronic currents per unit area creates a more stable photocurrent response when the voltage is increased from 40 V to 60 V.

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在含有不同含量聚乙二醇的电解质中制备的二氧化钛纳米管的形态和光电流响应

为了研究有机电解质对 TiO2 纳米管光电流性能的影响，制备了四种含氟电解质。本研究主要探讨了电解质对 TiO2 纳米管光电流响应的影响。结果表明，电解质对光电流响应有重要影响。适当比例的聚乙二醇（PEG）有机溶剂可以改善光电流响应性能。过量的有机溶剂会使 TiO2 纳米管失去光电流响应能力。合适的表面孔隙率是样品产生光电流响应的必要条件。过低的孔隙率会阻碍光电特性。离子电流和电子电流理论可以解释在 50 wt% PEG 电解质中制备的样品具有更好光电特性的原因。结果表明，当电压从 40 V 增加到 60 V 时，单位面积上离子电流和电子电流累积电荷的比例越稳定，光电流响应就越稳定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.