A Titanium–Organic Framework: Engineering of the Band-Gap Energy for Photocatalytic Property Enhancement

Nguyen, Ha L.; Vu, Thanh Tung; Le, Dang Thi Thanh; Đoàn, Tân Lê Hoàng; Nguyen, Viet Quoc; Phan, Nam T. S.

doi:10.1021/acscatal.6b02642

Cited by 142 publications

(76 citation statements)

References 33 publications

(19 reference statements)

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“…Ti‐MOFs are especially interesting due to their high stability and photocatalytic activity. However, only a limited number of Ti(IV)‐carboxylate‐based MOFs (MIL‐125 and its derivatives, PCN‐22, COK‐69, MOF‐901, and MOF‐902) have been reported, possibly due to synthetic difficulties. The first Ti‐MOF, MIL‐125, is constructed from [Ti 8 O 8 (OH) 4 (COO) 12 ] clusters and BDC linkers ( Figure ).…”

Section: Stable Metal–organic Frameworkmentioning

confidence: 99%

“…MOF‐901 and MOF‐902 are a class of unique MOFs as they combine the synthetic strategies of MOFs and covalent–organic frameworks . A hexameric Ti‐oxo‐cluster, [Ti 6 O 6 (OMe) 6 (ABZ) 6 ] (ABZ = 4‐aminobenzoate), was in situ generated which was further extended into a 2D layer through an imine condensation reaction between amino groups and dialdehyde spacers ( Figure ).…”

Section: Stable Metal–organic Frameworkmentioning

confidence: 99%

Section: Stable Metal–organic Frameworkmentioning

confidence: 99%

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Stable Metal–Organic Frameworks: Design, Synthesis, and Applications

et al. 2018

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Metal-organic frameworks (MOFs) are an emerging class of porous materials with potential applications in gas storage, separations, catalysis, and chemical sensing. Despite numerous advantages, applications of many MOFs are ultimately limited by their stability under harsh conditions. Herein, the recent advances in the field of stable MOFs, covering the fundamental mechanisms of MOF stability, design, and synthesis of stable MOF architectures, and their latest applications are reviewed. First, key factors that affect MOF stability under certain chemical environments are introduced to guide the design of robust structures. This is followed by a short review of synthetic strategies of stable MOFs including modulated synthesis and postsynthetic modifications. Based on the fundamentals of MOF stability, stable MOFs are classified into two categories: high-valency metal-carboxylate frameworks and low-valency metal-azolate frameworks. Along this line, some representative stable MOFs are introduced, their structures are described, and their properties are briefly discussed. The expanded applications of stable MOFs in Lewis/Brønsted acid catalysis, redox catalysis, photocatalysis, electrocatalysis, gas storage, and sensing are highlighted. Overall, this review is expected to guide the design of stable MOFs by providing insights into existing structures, which could lead to the discovery and development of more advanced functional materials.

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Section: Stable Metal–organic Frameworkmentioning

confidence: 99%

Section: Stable Metal–organic Frameworkmentioning

confidence: 99%

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Stable Metal–Organic Frameworks: Design, Synthesis, and Applications

et al. 2018

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“…However,t he documented Ti CPs or the so-called Ti metal-organic frameworks (TiM OFs) thus far are still relatively rare. [21][22][23][24][25][26][27] In fact, due to the high reactivity of the commonly employed Ti precursors, the controllable synthesiso f multidimensional Ti CPs is still challenging. Therefore, to develop as imple, universal synthetic strategy of Ti CPs is particularly necessary.…”

Section: Introductionmentioning

confidence: 99%

Designed Cluster Assembly of Multidimensional Titanium Coordination Polymers: Syntheses, Crystal Structure and Properties

Wang

Liu

Tian

et al. 2018

Chemistry A European J

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The exploitation of new titanium-based coordination polymers (Ti CPs) with high crystallinity is difficult but highly desirable for their potential applications in photocatalysis. Herein, a cluster-cooperative assemble strategy is developed to synthesize Ti CPs. By utilizing various bifunctional ligands containing carboxylate acids and N-donor groups, we successfully assembled the zero-dimensional (0D) [(Ti O)(iPrO) ] or [(Ti O )(iPrO) ] clusters into one-dimensional (1D) tube-, ribbon-, or helical chain-shape architectures, two-dimensional (2D) layered structures, and a rare parallel 2D→three-dimensional (3D) polycatenation framework with various copper iodide dopants, including rhombus- or wing-shaped Cu I and tetrahedron- or ladder-shaped Cu I . The as-synthesized compounds display strong absorption in the visible region with narrow band gaps ranging from 1.70 to 2.72 eV and exhibit good photocatalytic activities in the degradation of organic pollutants.

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“…15). This is an important control experiment as smaller-sized crystals typically offer higher catalytic activity if the catalysis is taking place on the external surface 26 . Since there was little change in polyMMA yield when using different sized particles of MOF-907, it is effectively concluded that the reaction took place mostly within the pores as a result of the unique structural features of MOF-907 26 .…”

Section: Resultsmentioning

confidence: 99%

A complex metal-organic framework catalyst for microwave-assisted radical polymerization

Nguyen

et al. 2018

Commun Chem

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Metal-organic frameworks (MOFs) have emerged as promising materials for use in practical applications of renewable energy, water harvesting, and catalytic transformation. Here we report the design of a highly porous MOF, termed MOF-907. Single crystal X-ray diffraction analysis, in combination with topological deconstruction, revealed a MOF based on trigonal prismatic secondary building units linked together by triangular and linear units to form a previously unseen net (nha) with minimal transitivity, which is rational for these constituent building units. The catalytic properties of MOF-907 for the microwave-assisted radical polymerization of methyl methacrylate were demonstrated. MOF-907 produced a poly methyl methacrylate product in a short reaction time (30 min) with high yield (98%), high molecular weight (20,680 g mol −1), and low polydispersity (1.23).

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A Titanium–Organic Framework: Engineering of the Band-Gap Energy for Photocatalytic Property Enhancement

Cited by 142 publications

References 33 publications

Stable Metal–Organic Frameworks: Design, Synthesis, and Applications

Stable Metal–Organic Frameworks: Design, Synthesis, and Applications

Designed Cluster Assembly of Multidimensional Titanium Coordination Polymers: Syntheses, Crystal Structure and Properties

A complex metal-organic framework catalyst for microwave-assisted radical polymerization

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