Preparation and properties of TiO2/illite composites synthesized at different hydrothermal pH values

Dong, Zhiqiang; Ling, Meiqi; Jiang, Yinshan; Han, Minglei; Ren, Guihua; Zhang, Jiahao; Ren, Xuanyu; Li, Fangfei; Xue, Bing

doi:10.1016/j.chemphys.2019.110394

Cited by 15 publications

(3 citation statements)

References 28 publications

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“…27 The XRD pattern of the original Ti(I/S) shows the characteristic diffraction peaks located at 8.8°, 12.3°, 19.7°, and 34.9°, corresponding to the illite and smectite. 28 In addition, a small peak at 2 θ = 25.3° was observed in the XRD pattern of Ti(I/S), which is ascribed to the (101) crystal plane diffraction peak of TiO 2 (JCPDS no. 71-1166) (Fig.…”

Section: Resultsmentioning

confidence: 99%

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Yang¹,

Wang²,

Xie³

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Yang¹,

Wang²,

Xie³

et al. 2023

New J. Chem.

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“…The natural illite could not only promote Co 3 O 4 nanosphere distribution but also regulate the grain size and crystallinity of Co 3 O 4 nanospheres as well as the oxygen vacancies which originated from illite clay as the electron reservoir accelerates electron immigration from PMS to the catalyst surface. Additionally, Dong et al could synthesize TiO 2 /illite composites to explore the influence of pH value on this reaction system [37]. They found that TiO 2 particles were connected onto the illite surface via Si-O-Ti and Al-O-Ti bonding; thus, illite could effectively hinder the phase transition from anatase to rutile at high temperatures.…”

Section: Illite-supported Photocatalystmentioning

confidence: 99%

Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications

Simon

Bekheet

et al. 2022

Energies

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Although they are of significant importance for environmental applications, the industrialization of photocatalytic techniques still faces many difficulties, and the most urgent concern is cost control. Natural minerals possess abundant chemical inertia and cost-efficiency, which is suitable for hybridizing with various effective photocatalysts. The use of natural minerals in photocatalytic systems can not only significantly decrease the pure photocatalyst dosage but can also produce a favorable synergistic effect between photocatalyst and mineral substrate. This review article discusses the current progress regarding the use of various mineral classes in photocatalytic applications. Owing to their unique structures, large surface area, and negatively charged surface, silicate minerals could enhance the adsorption capacity, reduce particle aggregation, and promote photogenerated electron-hole pair separation for hybrid photocatalysts. Moreover, controlling the morphology and structure properties of these materials could have a great influence on their light-harvesting ability and photocatalytic activity. Composed of silica and alumina or magnesia, some silicate minerals possess unique orderly organized porous or layered structures, which are proper templates to modify the photocatalyst framework. The non-silicate minerals (referred to carbonate and carbon-based minerals, sulfate, and sulfide minerals and other special minerals) can function not only as catalyst supports but also as photocatalysts after special modification due to their unique chemical formula and impurities. The dye-sensitized minerals, as another natural mineral application in photocatalysis, are proved to be superior photocatalysts for hydrogen evolution and wastewater treatment. This work aims to provide a complete research overview of the mineral-supported photocatalysts and summarizes the common synergistic effects between different mineral substrates and photocatalysts as well as to inspire more possibilities for natural mineral application in photocatalysis.

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“…So that applications in the photodegradation process will run better [26]. Zeolites were also characterized by XRF to determine the success or failure of the modified clay [27]. In Table 4, it is found that the Si/Al ratio of the zeolite synthesized has increased, where the ratio found has increased from 1.76 to 2.20.…”

Section: Figure 4 Xrd Patterns Of Synthesized Zeolitementioning

confidence: 99%

Синтез Цеоліту З Природної Глини І Золи Рисового Лушпиння В Якості Перспективного Фотокаталізатора Для Зменшення Забороненої Зони Діоксиду Титану

Сюкрі¹,

Факрі²,

Сафні

et al. 2022

J. of Chem. and Tech.

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In this study, we have utilized clay from Pariaman, Indonesia enriched with silica from rice husk ash to produce zeolite through a hydrothermal process. The resulting zeolite is then composited with the most common semiconductor photocatalyst, an anatase titanium oxide, to increase the semiconductor efficiency in terms of particle distribution and light sources activation. From X-Ray Fluorescence (XRF) measurement, it can be seen that the Si/Al mole ratio in the clay has been successfully increased from 1.8 to 2.0. These data are strengthened by the results of X-Ray Diffraction (XRD) analysis which shows the formation of zeolites of several types consisting of zeolite faujasite, P1, sodalite, X, and nu-6. When the synthesized zeolite is mixed with titania anatase, a composite is formed as evidenced by FTIR analysis with the appearance of Si-O-Si and Si-O-Al absorption bands for zeolite and Ti-O-Ti from titania. This zeolite has been shown to reduce the bandgap energy of titanium oxide after the two materials have been composited. Measurements with Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS) showed that the TiO2-anatase band gap decreased by about 20 %, from 3.20 to 2.56 eV allowing theoretically the composite to be considered as a promising photocatalyst.

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Preparation and properties of TiO2/illite composites synthesized at different hydrothermal pH values

Cited by 15 publications

References 28 publications

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications

Синтез Цеоліту З Природної Глини І Золи Рисового Лушпиння В Якості Перспективного Фотокаталізатора Для Зменшення Забороненої Зони Діоксиду Титану

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