Improved photocatalytic degradation of ketoprofen by Pt/MIL-125(Ti)/Ag with synergetic effect of Pt-MOF and MOF-Ag double interfaces: Mechanism and degradation pathway

Miao, Shengchao; Zhang, Houhu; Shen, Chen; Yang, Jing

doi:10.1016/j.chemosphere.2020.127123

Cited by 49 publications

(17 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Noble metal nanoparticles (NPs) deposited onto MOFs can suppress electron-hole recombination rates due to the migrated electrons being trapped by the metal across a junction because of the Schottky barrier, whereas holes freely diffuse to the MOF surface. 90 There are some studies where the deposition of Pd, 91 Ag, 92,93 or Pt 20 NPs significantly improved the photocatalytic activity of MOFs in the degradation of pollutants. For instance, Miao et al 20 found that MIL-125(Ti)/Pt and MIL-125(Ti)/Ag photocatalysts exhibited a higher photocatalytic performance in the degradation of ketoprofen compared to the pristine MOF.…”

Section: Optimization Of Preparation Methodsmentioning

confidence: 99%

“…90 There are some studies where the deposition of Pd, 91 Ag, 92,93 or Pt 20 NPs significantly improved the photocatalytic activity of MOFs in the degradation of pollutants. For instance, Miao et al 20 found that MIL-125(Ti)/Pt and MIL-125(Ti)/Ag photocatalysts exhibited a higher photocatalytic performance in the degradation of ketoprofen compared to the pristine MOF. Moreover, the design of the metal-MOF double interface in Pt/MIL-125(Ti)/Ag realized the cooperative utilization of Schottky junction charge trapping and the LSPR, which additionally increases the degradation of the pollutant (Fig.…”

Section: Optimization Of Preparation Methodsmentioning

confidence: 99%

“…The main problem with using the pristine MOFs as photocatalysts is the rapid recombination of photogenerated electron–hole pairs, which leads to a relatively low photocatalytic activity. In order to improve their activity, several approaches have been proposed: (i) optimization of preparation method; 19 (ii) depositing a noble metal co‐catalyst; 20 (iii) modification of ligands with organic groups, such as –NH 2 , –OH, or –(SH) 2 ; 21 (iv) creation of heterojunctions 22,23 . It is believed that the concept of a heterojunction architecture is the most promising approach to increasing the efficiency and stability of various photocatalysts by facilitating an improved photogenerated charge separation and transfer 24,25 …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

Belousov

Fukina

Koryagin

2022

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Heterogeneous photocatalysis has been considered one of the most attractive alternative routes to transforming naturally abundant, clean, and sustainable solar energy into chemical energy. Nowadays, the most popular heterogeneous photocatalyst, titanium dioxide, has already found applications for water splitting to produce hydrogen and oxygen, for the degradation of organic pollutants, for air purification, and for the creation of self‐cleaning coatings. However, TiO2 has a significant limitation: a large band gap (3.0–3.4 eV) that makes it impossible to use anything other than ultraviolet illumination to initiate photocatalytic processes. With a focus on efficient solar‐energy utilization, the development of new photocatalysts that are sensitive to visible light is an important direction in the theory and practice of heterogeneous photocatalysis. In this regard, the use of metal–organic frameworks (MOFs) is an attractive route; they have emerged as an interesting class of materials for applications in photoreactions due to their flexible tunability in composition, structure, and functional properties, along with their facilitated adsorption towards chemicals and their efficient light absorption. Moreover, they can be composed with other semiconductors to produce heterojunctions (e.g., type‐II, Z‐scheme, and S‐scheme), whose effectiveness in photogenerated charge separation has already been proven by many examples. The present critical review reports progress over the last 5 years in the preparation and activity of metal–organic framework‐based heterojunction photocatalysts for the degradation of organic pollutants. © 2022 Society of Chemical Industry (SCI).

show abstract

Section: Optimization Of Preparation Methodsmentioning

confidence: 99%

Section: Optimization Of Preparation Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

Belousov

Fukina

Koryagin

2022

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…A degradation efficiency of 80% was achieved within 330 min under visible-light irradiation. Miao et al [166] successfully synthesized Pt/MIL-125(Ti)/Ag by a solvothermal method to study the degradation process of ketoprofen (KP). Pt/MIL-125(Ti)/Ag photocatalyst showed 95.5% degradation of KP under visible light after 2 h. The results mentioned above, show the effectiveness of MOF-based photocatalysts for the removal of PPCPs.…”

Section: Photocatalytic Removal Of Pharmaceuticals and Personal Care ...mentioning

confidence: 99%

Photocatalytic Water and Wastewater Treatment

2022

View full text Add to dashboard Cite

This book aims to provide an overview of how photocatalysis can be employed in water and wastewater treatment. Each chapter will attend to a different area of interest, starting with an introduction on the fundamentals of photocatalysis. The covered topics include metal organic frameworks (MOFs), photocatalytic reactor types and configurations, landfill leachate treatment, and life cycle assessment (LCA) of solar photocatalytic wastewater treatment. In addition, the final two chapters provide fresh new insight, by analyzing international patents on photocatalytic materials, solar photocatalysis, and nanotechnology. ISBN: 9781789061925 (Paperback) ISBN: 9781789061932 (eBook) ISBN: 9781789061949 (ePUB)

show abstract

“…In type III MOFs, photoactive species such as noble-metal nanoparticles and polyoxometalates (POMs) are encapsulated inside the pores of MOFs to initiate photocatalytic reactions. Since MOFs are considered as photocatalytic molecules arranged in a crystalline lattice, the terminology of highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) from the frontier molecular orbital (FMO) theory, instead of the terminology of valence band (VB) and conduction band (CB) commonly used to describe semiconductor photocatalysts, is adopted. , The HOMO–LUMO gap energies, the positions of HOMO and LUMO, and the light absorption edges of representative photocatalytic MOFs applied for the degradation of agricultural pollutants in recent years are shown in Figure . − …”

Section: Photocatalytic Metal–organic Framework (Mofs)mentioning

confidence: 99%

Metal Organic Frameworks (MOFs) as Photocatalysts for the Degradation of Agricultural Pollutants in Water

et al. 2021

View full text Add to dashboard Cite

Increasing demand for food due to rapid population growth has exerted unprecedented pressure on the global agricultural industry. Agrochemicals are widely used to ensure productivity, leading to the prevalence of legacy and emerging agricultural chemicals in the environment, most of which are toxic and persistent. Metal−organic frameworks (MOFs) as a group of novel photocatalytic materials with ultrahigh porosity and tunability have demonstrated high potential for efficient removal of these recalcitrant pollutants. This critical review aims to present the potential of MOF-catalyzed photodegradation of pesticides and antibiotics. Initially, the capabilities of different MOF-based composites to harvest visible light are compared. Examples include MOFs combined with bismuth oxyhalides (BiOX) and graphite oxide (GO). Mechanisms involved in MOF-induced photocatalytic processes such as electron−hole (e − /h + ) separation, generation of reactive species, and degradation pathways of representative pollutants as well as impacts of water chemistry are illustrated in detailed. Research on applying MOF-catalyzed processes is largely in progress, and many more studies with greater mechanistic evaluation are needed to fully assess the potential of such processes to depollute water.

show abstract

Improved photocatalytic degradation of ketoprofen by Pt/MIL-125(Ti)/Ag with synergetic effect of Pt-MOF and MOF-Ag double interfaces: Mechanism and degradation pathway

Cited by 49 publications

References 61 publications

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

Photocatalytic Water and Wastewater Treatment

Metal Organic Frameworks (MOFs) as Photocatalysts for the Degradation of Agricultural Pollutants in Water

Contact Info

Product

Resources

About