Covalently integrated core-shell MOF@COF hybrids as efficient visible-light-driven photocatalysts for selective oxidation of alcohols

Lu, Guilong; Huang, Xiubing; Li, Yang; Zhao, Guixia; Pang, Guangsheng; Wang, Ge

doi:10.1016/j.jechem.2019.07.014

Cited by 163 publications

(82 citation statements)

References 54 publications

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“…For economical and sustainability reasons, visible light-catalyzed reactions are of special relevance from a synthetic standpoint. Various other experiments have thus been reported for photocatalysis applications in the presence of COFs, such as oxidation of amines [ 195 ], alcohols [ 196 ] or sulfides [ 197 ]; as well as other types of reactions, such as C-C coupling reactions [ 198 , 199 ], isomerization of olefins [ 200 ], carbon dioxide [ 201 ] and heavy metal [ 202 ] reduction or pollutant degradation [ 203 ].…”

Section: Cof Applicationsmentioning

confidence: 99%

Covalent Organic Frameworks: Synthesis, Properties and Applications—An Overview

et al. 2021

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Covalent Organic Frameworks (COFs) are an exciting new class of microporous polymers with unprecedented properties in organic material chemistry. They are generally built from rigid, geometrically defined organic building blocks resulting in robust, covalently bonded crystalline networks that extend in two or three dimensions. By strategically combining monomers with specific structures and properties, synthesized COF materials can be fine-tuned and controlled at the atomic level, with unparalleled precision on intrapore chemical environment; moreover, the unusually high pore accessibility allows for easy post-synthetic pore wall modification after the COF is synthesized. Overall, COFs combine high, permanent porosity and surface area with high thermal and chemical stability, crystallinity and customizability, making them ideal candidates for a myriad of promising new solutions in a vast number of scientific fields, with widely varying applications such as gas adsorption and storage, pollutant removal, degradation and separation, advanced filtration, heterogeneous catalysis, chemical sensing, biomedical applications, energy storage and production and a vast array of optoelectronic solutions. This review attempts to give a brief insight on COF history, the overall strategies and techniques for rational COF synthesis and post-synthetic functionalization, as well as a glance at the exponentially growing field of COF research, summarizing their main properties and introducing the numerous technological and industrial state of the art applications, with noteworthy examples found in the literature.

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Section: Cof Applicationsmentioning

confidence: 99%

Covalent Organic Frameworks: Synthesis, Properties and Applications—An Overview

et al. 2021

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“…Furthermore, their huge surface area and tunable pore size and distribution promote substrate-catalyst interaction, providing at the same time size and shape selectivity towards the desired reaction [1,214,215]. Owing to these superior features, MOFs arise great interest in many photocatalytic processes, including hydrogen evolution [216][217][218], CO 2 reduction [175,[219][220][221], and pollutant degradation [222][223][224], as well as organic selective oxidations [225]. In most MOFs, inorganic metal nodes are the active component towards photo-redox reactions, exhibiting photoelectronic properties, typical of inorganic semiconductors (Figure 10a), yet with the better photocatalytic performance [1].…”

Section: Metal-organic Framework (Mofs)mentioning

confidence: 99%

“…This strategy was successfully applied to NH 2 -MIL-125(Ti) or NH 2 -UiO-66(Zr) systems, which were modified with triazine-based frameworks (B-CTF-1). Compared to bare MOFs and even physical mixtures of MOFs and COFs, obtained MOF/COF hybrid materials showed higher stability, as well as hydrogen production rate, due to the presence of amide bonds between B-CTF-1 and MOFs, ensuring wide absorption range as well as long-lived photogenerated charge carriers [225,242], as shown in Figure 13. The coating of NH 2 -MIL-125 with shell via a covalent bond linkage modifies the intrinsic electronic properties and reduces the recombination rate of photogenerated electron-hole pairs, resulting in excellent performances.…”

Section: Ligand Functionalizationmentioning

confidence: 99%

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Photosensitive Hybrid Nanostructured Materials: The Big Challenges for Sunlight Capture

2020

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Solar radiation is becoming increasingly appreciated because of its influence on living matter and the feasibility of its application for a variety of purposes. It is an available and everlasting natural source of energy, rapidly gaining ground as a supplement and alternative to the nonrenewable energy feedstock. Actually, an increasing interest is involved in the development of efficient materials as the core of photocatalytic and photothermal processes, allowing solar energy harvesting and conversion for many technological applications, including hydrogen production, CO2 reduction, pollutants degradation, as well as organic syntheses. Particularly, photosensitive nanostructured hybrid materials synthesized coupling inorganic semiconductors with organic compounds, and polymers or carbon-based materials are attracting ever-growing research attention since their peculiar properties overcome several limitations of photocatalytic semiconductors through different approaches, including dye or charge transfer complex sensitization and heterostructures formation. The aim of this review was to describe the most promising recent advances in the field of hybrid nanostructured materials for sunlight capture and solar energy exploitation by photocatalytic processes. Beside diverse materials based on metal oxide semiconductors, emerging photoactive systems, such as metal-organic frameworks (MOFs) and hybrid perovskites, were discussed. Finally, future research opportunities and challenges associated with the design and development of highly efficient and cost-effective photosensitive nanomaterials for technological claims were outlined.

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“…), fine chemical industries (e.g., refrigerant, advanced solvents.) [12] . During the conversion of cellulose in harsh conditions (hydrogen pressurized liquid phase under 200-245 °C), some important intermediates including glyceraldehyde, hydroxyacetone (HDA), glycolaldehyde and even other undetermined chemicals, would be produced in mediums.…”

Section: Introductionmentioning

confidence: 99%