A Metal–Organic Framework Supported Nonprecious Metal Photocatalyst for Visible‐Light‐Driven Wastewater Treatment

Abstract

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Metal–Organic Frameworks in Heterogeneous Catalysis: Recent Progress, New Trends, and Future Perspectives

“…Ibuprofen (IBP), one of the most consumed nonsteroidal anti-inflammatory drugs was successfully eliminated by using an Ag/AgCl@MIL-88A(Fe) nanocomposite. 544 Tilgner et al 590 synthesized an Fe 2 O 3 /TiO 2 @MIL-101 composite for the visible-light-driven degradation of antibiotics such as ciprofloxacin, levofloxacin, and diclofenac.…”

Recent Progress and Prospects in Catalytic Water Treatment

“…821 Not surprisingly, dye decolorization has been a preferred test reaction to evaluate their photocatalytic activity. 752,[822][823][824][825][826][827][828][829] MOFs are especially suited as visible light photocatalysts. 121 Besides as-prepared materials, MOFs can also be subjected to post-synthetic modification The photocatalytic activity of MOFs for water treatment relies at least three possible centers, including active metal nodes, linkers or occluded guests.…”

“…The use of MOFs as photocatalysts, including wastewater treatment, has been recently reviewed, summarizing strategies to enhance their photocatalytic activity . Not surprisingly, dye decolorization has been a preferred test reaction to evaluate their photocatalytic activity. ,− MOFs are especially suited as visible light photocatalysts …”

Scavenger-Supported Photocatalytic Evidence of an Extended Type I Electronic Structure of the TiO2@Fe2O3 Interface

“…21 Research results in favor of the type I 27,30−33 and type II 19,28,34−36 or that of the extended type I have been published. 4,29,37,38 Formation of a type I heterojunction, where the conduction band (CB) edge of TiO 2 is above the CB of Fe 2 O 3 and the valence band (VB) edge of TiO 2 is below that of Fe 2 O 3 , has been proposed. 27,30−32 However, in this case, the photoelectrons and photoholes generated in TiO 2 upon UV radiation would transfer to the conduction and valence bands of Fe 2 O 3 , respectively, with no improvement toward suppression of the charge recombination.…”

“…Therefore, the knowledge of the relative positions of the valence and conduction bands of these two materials is not explicitly supported by the experimental results. 30,35,38 Most of the studies 2−6 on the photocatalytic behavior of heterostructures aim to improve the photodegradation rate. For example, Xia et al 2 studied core−shell α-Fe 2 O 3 @TiO 2 nanocomposites prepared by the heteroepitaxial growth route and showed their improved photocatalytic activity toward the decomposition of rhodamine B (RhB) in the visible light region.…”