A post-synthetically modified porous organic polymer for photocatalytic water purification

Choi, Minhyeok; Singh, Nem; Son, Subin; Kim, Ji Hyeon; Kang, Min‐Jung; Park, Sungnam; Choi, Dong Hoon; Hong, Chang Seop; Kim, Jong Seung

doi:10.1039/d3qm00142c

Cited by 9 publications

(3 citation statements)

References 57 publications

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“…137 The development of post-synthetic modified PA[ n ]-based NACs is of great value in scientific research and practical applications, especially in hydrocarbon separation. 138…”

Section: Pillar[n]arene-based Nacsmentioning

confidence: 99%

Potential of nonporous adaptive crystals for hydrocarbon separation

et al. 2023

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“…137 The development of post-synthetic modified PA[ n ]-based NACs is of great value in scientific research and practical applications, especially in hydrocarbon separation. 138…”

Section: Pillar[n]arene-based Nacsmentioning

confidence: 99%

Potential of nonporous adaptive crystals for hydrocarbon separation

et al. 2023

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“…Singlet oxygen ( 1 O 2 ), generated by activation of the ground-state triplet oxygen ( 3 O 2 ) by energy transfer from triplet-excited photosensitizers, is one of the most important reactive oxygen species (ROS). − It continues to be exploited in several applications, including photodynamic therapy, , wastewater treatment, , degradation of organic pollutants, , and diverse organic transformations. − As a mild, green, and inexpensive oxidant, 1 O 2 has gained much attention in organic photocatalysis. − The generation of 1 O 2 by photosensitization can be accomplished in a homogeneous medium by employing several organic photosensitizers − and in a heterogeneous phase by immobilizing the photosensitizers on solid supports. , Advantages with the latter approach include: (i) enhancement of photostability, (ii) efficient generation of 1 O 2 by obviating self-quenching through triplet–triplet annihilation, (iii) ease of separation of oxygenated products, and (iv) recyclability of the sensitizer. Among various systems known for the generation of 1 O 2 in a heterogeneous phase, porous materials such as metal–organic frameworks (MOFs), − covalent-organic frameworks (COFs) − and porous organic polymers (POPs) − have emerged as inextricable materials in recent times. Application of these materials as applied to photooxygenations/oxidation reactions by the involvement of 1 O 2 are relatively few compared to those reported for the reactions involving superoxide anion, that is, O 2 •– , which is generated by single-electron transfer. , …”

Section: Introductionmentioning

confidence: 99%

De Novo Synthesis of Acridone-Based Zn-Metal–Organic Framework (Zn-MOF) as a Photocatalyst: Application for Visible Light-Mediated Oxidation of Sulfides and Enaminones

Tamuly,

Moorthy

2024

ACS Appl. Mater. Interfaces

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Acridone, a cyclic analogue of benzophenone that undergoes efficient intersystem crossing (ISC) to the triplet-excited state with near-unity quantum yield, was elaborated as a 3-connecting triacid linker, i.e., H 3 AcTA, to develop a photocatalytic metal− organic framework (MOF) for energy transfer applications; the triacid linker inherently features concave shapes, an attribute that is important for the construction of MOFs with significant porosity. Metal ion (Zn 2+ )-assisted self-assembly of the triacid yielded a Zn-MOF, i.e., Zn-AcTA, with a solvent-accessible volume of ca. 31%. The protection of the acridone chromophore in the MOF in conjunction with a wider cross-section of its absorption in the visible region renders the MOF an excellent heterogeneous photosensitizer for singlet oxygen ( 1 O 2 ) generation by energy transfer to the ground-state triplet oxygen ( 3 O 2 ). It is shown that the Zn-MOF can be applied as a photosensitizing catalyst for visible light-mediated oxidation of various sulfides to sulfoxides and enaminones to amino-esters via 1,2-acyl migration. It is further demonstrated that the photocatalyst can be easily recycled without any loss of catalytic activity and structural integrity. Based on mechanistic investigations, 1 O 2 is established as the reactive oxygen species in photocatalytic oxidation reactions. The results constitute the first demonstration of rational development of a photocatalytic MOF based on acridone for heterogeneous oxidations mediated by 1 O 2 .

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“…The discharge of organic dyes into water by various industries is a major cause of water pollution and a serious health hazard to society [1][2][3]. A growing awareness of environmental protection has prompted researchers to conduct in-depth studies on green technologies for the photocatalytic degradation of organic dyes [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Ag-Modified ZnO/g-C3N4 Photocatalyst with 1D-0D-2D Morphology for Methylene Blue Degradation

Qiu,

2024

Molecules

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Photocatalysts with different molar ratios of Ag-modified ZnO to g-C3N4 were prepared through an electrostatic self-assembly method and characterized through techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The resulting Ag-ZnO/g-C3N4 photocatalysts exhibited a unique 1D-0D-2D morphology and Z-type heterojunction. Moreover, g-C3N4 nanosheets with large layer spacing were prepared using acid treatment and thermal stripping methods. The Z-type heterostructure and localized surface plasmon resonance effect of Ag nanowires enabled high-speed electron transfer between the materials, while retaining large amounts of active substances, and broadened the light response range. Because of these features, the response current of the materials improved, and their impedance and photoluminescence reduced. Among the synthesized photocatalysts, 0.05Ag-ZnO/g-C3N4 (molar ratio of g-C3N4/ZnO: 0.05) exhibited the highest photocatalytic performance under UV–visible light. It degraded 98% of methylene blue in just 30 min, outperforming both g-C3N4 (21% degradation in 30 min) and Ag-ZnO (84% degradation in 30 min). In addition, 0.05Ag-ZnO/g-C3N4 demonstrated high cycling stability.

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A post-synthetically modified porous organic polymer for photocatalytic water purification

Abstract: The incremental discharge of chemicals and textile waste into industrial effluent makes the water unbearably polluted for humans and other living organisms. Conventional water treatment processes are efficient in degrading...

Cited by 9 publications

References 57 publications

Potential of nonporous adaptive crystals for hydrocarbon separation

Potential of nonporous adaptive crystals for hydrocarbon separation

De Novo Synthesis of Acridone-Based Zn-Metal–Organic Framework (Zn-MOF) as a Photocatalyst: Application for Visible Light-Mediated Oxidation of Sulfides and Enaminones

High-Efficiency Ag-Modified ZnO/g-C3N4 Photocatalyst with 1D-0D-2D Morphology for Methylene Blue Degradation

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