非晶和结晶二氧化钛在FTO上的精化:表征及其对橙甲基的光催化作用

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-01-01 DOI:10.4152/pea.202005331

R. Foudil, A. Djamila

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引用次数: 0

摘要

本文报道了在含氟二氧化锡(FTO)镀膜玻璃上阴极电沉积的方法，利用过氧钛络合物水溶液制备了无定形和纳米晶结构的二氧化钛。结构x射线分析表明，加热后的沉积层为锐钛矿相，未加热后的沉积层为无定形。扫描电子显微镜(SEM)允许研究沉积物的形态方面，表现出纳米颗粒粒度。AFM结果显示两种膜的粗糙度值不同。在365 nm的紫外光照射下，将结晶沉积用作甲基橙染料光催化氧化的催化剂。结果表明，该染料在紫外光照射下发生了轻微的降解。利用分光光度计测量，从残留浓度估计脱色率。

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Elaboration of Amorphous and Crystalline Titanium Dioxide on FTO: its Characterization and Photocatalytic Effect on Orange Methyl

In this paper, we report on the preparation of an amorphous and nanocrystalline structure of titanium dioxide, by cathodic electrodeposition on fluorine doped tin dioxide (FTO) coated glass, from an aqueous peroxo-titanium complex solution. Structural X-ray analysis shows anatase phase for heated deposits, and an amorphous form for non-heated deposits. Scanning electron microscopy (SEM) allowed investigating the morphological aspect of the deposits which exhibited nano-particulate grain size. AFM results exhibited the different roughness values of both kinds of films. The crystalline deposits have been used as catalysts for the photocatalytic oxidation of methyl orange dye, under an irradiation source (UV lamp of 365 nm). The results revealed that the dye has undergone a slight degradation under UV illumination. Using spectrophotometer measurements, the decolourisation rate was estimated from residual concentration.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.