The synthesis strategies and photocatalytic performances of TiO2/MOFs composites: A state-of-the-art review

Wang, Chong-Chen; Wang, Xun; Liu, Wen

doi:10.1016/j.cej.2019.123601

Cited by 167 publications

(63 citation statements)

References 388 publications

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“…Photodegradation is theoretically a better method than adsorption for wastewater treatment, mainly because it causes a complete elimination of the pollutant instead of its simple phase transfer, so no further treatment is required. The presence of organic linkers in MOFs allows them to have a relatively wide absorption spectrum permitting the generation of a charge-separated state, which decays in the microseconds, thus permitting photocatalytic applications (Hariganesh et al, 2020;Wang C. et al, 2020). Alvaro et al (2007) investigated the behavior of MOF-5, containing clusters of ZnO, as a semiconductor.…”

Section: Metal Organic Framework As Photocatalystsmentioning

confidence: 99%

Applications of Metal Organic Frameworks in Wastewater Treatment: A Review on Adsorption and Photodegradation

et al. 2020

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The growing accumulation of emerging contaminants in the environment can cause direct and indirect water pollution that puts human lives at risk. The fact that these contaminants are not or cannot be eliminated from the municipal water utilities, poses a significant concern. Researchers are currently pulling massive attention to improve existing technologies, develop new strategies, and provide environmentally durable solutions to mitigate water contamination problems. Adsorption and photodegradation are two of the most sustainable technologies that are used in water purification. These technologies have many advantages because of the economic, simple, and easily operated designs needed to treat wastewater. Within these applications, metal organic frameworks (MOFs) are playing a significant role as novel class of porous materials characterized by a crystalline structure. MOFs are considered good candidates to be employed in wastewater treatment technologies because of the tunability of their features. The scope of this review article is to provide a comprehensive description of the recent studies published in the literature about the adsorptive and photocatalytic use of MOFs for the removal of organic emerging contaminants from wastewater. Furthermore, this study briefly highlights the synthesis technologies of MOFs. Finally, future perspective and challenges associated with MOF large-scale production are discussed.

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Section: Metal Organic Framework As Photocatalystsmentioning

confidence: 99%

Applications of Metal Organic Frameworks in Wastewater Treatment: A Review on Adsorption and Photodegradation

et al. 2020

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“…However, disadvantages such as low conductivity, fast recombination of electrons and holes, and limited response under UV light have inhibited their photocatalytic activities. To overcome these problems, several strategies involving the fabrication of composites of MOFs or CPs with semiconductors (such as g-C3N4 [34,35], Ag2CO3 [36], TiO2 [37], and Bi24O31Br10 [38]), electroactive polymers (such as PANI [39]), conductors (like RGO [40]), and noble metal nanoparticles (such as Ag [41] and Pd [42]) have been introduced. BUC-21 is a stable 2D coordination polymer produced by our research group using cis-1,3-dibenzyl-2-oxo-4,5-imidazolidinedicarboxylic acid (H2L) and 4,4′-bipyridine (bpy) as organic linkers and Zn 2+ as the metal ion.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Cr(VI) elimination over BUC-21/N-K2Ti4O9 composites: Big differences in performance resulting from small differences in composition

Wang

et al. 2021

Chinese Journal of Catalysis

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“…MOFs are used in a wide variety of applications, such as sensing, gas separation, and photocatalysis, because of their excellent properties, such as high porosity and high surface area. Moreover, in contrast to the traditional semiconductor photocatalysts, the absorption bands of MOFs can be adjusted to the visible light because they contain a large amount of organic linkers (Araya et al, 2017 ; Yao et al, 2018 ; Wang et al, 2019 ; Chen et al, 2020 ; Li et al, 2020b ). In addition, a composite of adsorption-enrichment and in-situ photocatalytic degradation of MOFs may greatly improve the pollutant removal performance (Wang et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Tetracycline by a Novel (CMC)/MIL-101(Fe)/β-CDP Composite Hydrogel

Zhang

Zhou

et al. 2021

Front. Chem.

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Herein, we report a novel carboxymethyl cellulose (CMC)/MIL-101 (Fe)/poly(β-cyclodextrin) (β-CDP) hydrogel with high photocatalytic activity. β-CDP can significantly enhance the photoactivity of MIL-101(Fe) in the hydrogel prepared by a simple solvothermal method. The structure and property of this composite hydrogel were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Tetracycline was selected as a model pharmaceutical antibiotic to evaluate the photocatalytic activity of the composite hydrogel under visible light irradiation and darkness, respectively. This composite hydrogel shows excellent activity for degrading pharmaceutical antibiotics under visible light irradiation. The increased photocatalytic activity can be attributed to β-CDP, which acts as a promoter and affords an efficient separation of photogenerated electron-hole pairs of MIL-101(Fe). Moreover, the composite hydrogel is shown to have good water retainability. The hydrogel is inexpensive and shows high photocatalytic activity. Hence, it can be used as an efficient photocatalytic material.

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The synthesis strategies and photocatalytic performances of TiO2/MOFs composites: A state-of-the-art review

Cited by 167 publications

References 388 publications

Applications of Metal Organic Frameworks in Wastewater Treatment: A Review on Adsorption and Photodegradation

Applications of Metal Organic Frameworks in Wastewater Treatment: A Review on Adsorption and Photodegradation

Photocatalytic Cr(VI) elimination over BUC-21/N-K2Ti4O9 composites: Big differences in performance resulting from small differences in composition

Photocatalytic Degradation of Tetracycline by a Novel (CMC)/MIL-101(Fe)/β-CDP Composite Hydrogel

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