High performance photocatalysts: Montmorillonite supported-nano TiO  composites

Liang, Hui; Wang, Zaiqin; Liao, Lingmin; Chen, Liang; Li, Zhen; Feng, Jiwen

doi:10.1016/j.ijleo.2017.02.018

Cited by 30 publications

(12 citation statements)

References 18 publications

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“…The photocatalytic degradation is a safe, longlasting, and sustainable technology in the treatment of air pollutions [5][6][7][8][9] and road surface oils [10,11]. The basic mechanism is that photocatalytic materials will induce photo-oxidation-reduction reactions under the action of light.…”

Section: Introductionmentioning

confidence: 99%

Laboratory experiment on the nano-TiO₂photocatalytic degradation effect of road surface oil pollution

Wang

Zheng

et al. 2020

Nanotechnology Reviews

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Oil leak from vehicles is one of the most common pollution types of the road. The spilled oil could be retained on the surface and spread in the air voids of the road, which results in a decrease in the friction coefficient of the road, affects driving safety, and causes damage to pavement materials over time. Photocatalytic degradation through nano-TiO2 is a safe, long-lasting, and sustainable technology among the many methods for treating oil contamination on road surfaces. In this study, the nano-TiO2 photocatalytic degradation effect of road surface oil pollution was evaluated through the lab experiment. First, a glass dish was used as a substrate to determine the basic working condition of the test; then, a test method considering the impact of different oil erosion degrees was proposed to eliminate the effect of oil erosion on asphalt pavement and leakage on cement pavement, which led to the development of a lab test method for the nano-TiO2 photocatalytic degradation effect of oil pollution on different road surfaces.

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Section: Introductionmentioning

confidence: 99%

Laboratory experiment on the nano-TiO₂photocatalytic degradation effect of road surface oil pollution

Wang

Zheng

et al. 2020

Nanotechnology Reviews

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“…Hal is a 1:1 aluminosilicate mineral with the empirical formula Al 2 Si 2 O 5 (OH) 4 , the typical diffraction peaks of Hal are observed at 2 θ = 12.3, 18.3, 20.2, 24.8°, and the diffraction peaks of quartz are located at 2 θ = 20.8, 26.7, and 36.6° (Figure 4A) (Philip et al, 2017). Figure 4B gives XRD pattern of Mt, its characteristic diffraction peaks are located at 2 θ = 5.9, 19.7, and 35.1°, while the diffraction peaks at 2 θ = 12.5 and 17.5° are attributed to illite (Wang et al, 2016; Liang et al, 2017). Dic is a kind of layered silicate mineral, and pertains to 1:1 type of Kaol subgroup.…”

Section: Resultsmentioning

confidence: 99%

Formation and Coloring Mechanism of Typical Aluminosilicate Clay Minerals for CoAl2O4 Hybrid Pigment Preparation

Zhang

Wang

et al. 2018

Front. Chem.

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Different kinds of aluminosilicate minerals were employed to fabricate CoAl2O4 hybrid pigment for studying its formation and coloring mechanism. It revealed that the color of the obtained hybrid pigments was determined by the content of Al2O3 and lightness of clay minerals. The higher the Al2O3 content and the lightness of clay minerals, the better the color parameters of hybrid pigments. During the preparation of hybrid pigments, CoAl2O4 nanoparticles were confined to be loaded on the surface of the aluminosilicate minerals, which effectively prevented from the aggregation and the size increase of CoAl2O4 nanoparticles. What's more, aluminosilicate mineral might be an ideal natural aluminum source to compensate the aluminum loss due to the dissolution of Al(OH)3 at alkaline medium during precursor preparation, keeping an optimum molar ratio of Co2+/Al3+ for formation of spinel CoAl2O4 pigments in the process of high-temperature crystallization.

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“…Hence, porous mineral/nano-TiO 2 composite systems can improve the photodegradation efficiency of nano-TiO 2 . Liang et al [47] used montmorillonite as the matrix to prepare a TiO 2 /montmorillonite composite photocatalyst. The results showed that the montmorillonite matrix improved the capacity of optical absorption capacity from 70% to 87% because the visible light absorption ability (390-780 nm) of the composites was enhanced compared with pure TiO 2 .…”

Section: Non-metallic Materials Supported Tiomentioning

confidence: 99%

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

Zhou

2020

Catalysts

182

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A high-efficiency method to deal with pollutants must be found because environmental problems are becoming more serious. Photocatalytic oxidation technology as the environmentally-friendly treatment method can completely oxidate organic pollutants into pollution-free small-molecule inorganic substances without causing secondary pollution. As a widely used photocatalyst, titanium dioxide (TiO2) can greatly improve the degradation efficiency of pollutants, but several problems are noted in its practical application. TiO2 modified by different materials has received extensive attention in the field of photocatalysis because of its excellent physical and chemical properties compared with pure TiO2. In this review, we discuss the use of different materials for TiO2 modification, highlighting recent developments in the synthesis and application of TiO2 composites using different materials. Materials discussed in the article can be divided into nonmetallic and metallic. Mechanisms of how to improve catalytic performance of TiO2 after modification are discussed, and the future development of modified TiO2 is prospected.

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High performance photocatalysts: Montmorillonite supported-nano TiO composites

Cited by 30 publications

References 18 publications

Laboratory experiment on the nano-TiO₂photocatalytic degradation effect of road surface oil pollution

Laboratory experiment on the nano-TiO₂photocatalytic degradation effect of road surface oil pollution

Formation and Coloring Mechanism of Typical Aluminosilicate Clay Minerals for CoAl2O4 Hybrid Pigment Preparation

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

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High performance photocatalysts: Montmorillonite supported-nano TiO composites

Cited by 30 publications

References 18 publications

Laboratory experiment on the nano-TiO2photocatalytic degradation effect of road surface oil pollution

Laboratory experiment on the nano-TiO2photocatalytic degradation effect of road surface oil pollution

Formation and Coloring Mechanism of Typical Aluminosilicate Clay Minerals for CoAl2O4 Hybrid Pigment Preparation

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

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Laboratory experiment on the nano-TiO₂photocatalytic degradation effect of road surface oil pollution

Laboratory experiment on the nano-TiO₂photocatalytic degradation effect of road surface oil pollution