Filling metal–organic framework mesopores with TiO2 for CO2 photoreduction

Jiang, Zhuo; Xu, Xiaohui; Ma, Yangmin; Cho, Hae Sung; Ding, Deng; Wang, Chao; Wu, Jie; Oleynikov, Peter; Jia, Mei; Cheng, Jun; Zhou, Yi; Terasaki, Osamu; Peng, Tianyou; Zan, Ling; Deng, Hexiang

doi:10.1038/s41586-020-2738-2

Cited by 708 publications

(405 citation statements)

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“…[ 12–14 ] Jiang et al. [ 15 ] reported that by accurately anchoring TiO 2 in two different molecular compartments of MIL‐101, a quantum efficiency of up to 11.3% was achieved, proving that the precise positioning of TiO 2 in the metal‐organic framework (MOF) system can effectively improve the material performance. Li et al.…”

Section: Introductionmentioning

confidence: 99%

“…For the development of efficient photocatalysts, scientists have done a lot of meaningful work. [12][13][14] Jiang et al [15] reported that by accurately anchoring TiO 2 in two different molecular compartments of MIL-101, a quantum efficiency of up to 11.3% was achieved, proving that the precise positioning of TiO 2 in the metal-organic framework (MOF) system can effectively improve the material performance. Li et al [16] reported that through a top-down direct metal atomization method to prepare single atoms and the use of CO species to adjust the coordination environment, a high turnover number of 1493.5 could be achieved in CO 2 photoreduction process.…”

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confidence: 99%

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Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO₂‐to‐CH₄ Photoreduction

Jiang

et al. 2021

Adv Funct Materials

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How to develop an efficient photocatalyst with high activity and high selectivity is the biggest challenge limiting the application of photocatalysis. A reasonable design of the nanoreactor model is an effective strategy. Herein, a series of Pt nanoparticles coated with hexagonal boron nitride (Pt@h-BN) nanoreactors highly dispersed on a photochemically inert carrier, Al 2 O 3 substrate, are synthesized. The results show that as the number of h-BN coating layers increases, the selectivity of photocatalysis is altered from nearly 100% CO 2 -to-CO to nearly 100% CO 2 -to-CH 4 , and the optimized space-time yield of CH 4 is up to 184.7 μmol g (Pt) −1 h −1 with three-layer coating. The in situ characterizations reveal the cleavage of the CO on Pt to be the rate determining step and the existence of the key intermediate CO 2 − species on the surface of Pt@h-BN facilitates CH 4 formation. Notably, combined with detailed simulation calculations, this work reveals that the confinement effect in Pt@h-BN attributes the electrons mobility behavior and alleviate the interaction of COPt. What is more, the change of the reaction site is the essence for the sudden alternation. This work will bring a new insight to the selective catalysis of noble metals in the gas-solid phase.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO₂‐to‐CH₄ Photoreduction

Jiang

et al. 2021

Adv Funct Materials

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“…Metal-organic frameworks (MOFs) have attracted a lot of attention, and they have potential applications in gas storage, separation, catalysis, photoluminescence, sensors, magnetic and electric devices [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. Multiferroic MOFs have drawn special interest due to tuneable properties and the coexistence of ferroelectricity/ferromagnetism/ferroelasticity [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Elastic Properties and Energy Dissipation Related to the Disorder-Order Ferroelectric Transition in a Multiferroic Metal-Organic Framework [(CH3)2NH2][Fe(HCOO)3] with a Perovskite-Like Structure

Zhang

Shen

et al. 2021

Materials

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The elastic properties and the coupling of ferroelasticity with ferromagnetism and ferroelectricy are crucial for the development of multiferroic metal-organic frameworks (MOFs) with strong magnetoelectric coupling. Elastic properties and energy dissipation related to the disorder-order ferroelectric transition in [(CH3)2NH2][Fe(HCOO)3] were studied by differential scanning calorimetry (DSC), low temperature X-ray diffraction (XRD) and dynamic mechanical analysis (DMA). DSC result indicated the transition near 164 K. XRD showed the first-order structural transition from rhombohedral R3−c to monoclinic Cc at ~145 K, accompanied by the disorder-order transition of proton ordering in the N–H…O hydrogen bonds in [(CH3)2NH2]+ as well as the distortion of the framework. For single crystals, the storage modulus was ~1.1 GPa and the loss modulus was ~0.02 GPa at 298 K. DMA of single crystals showed quick drop of storage modulus and peaks of loss modulus and loss factor near the ferroelectric transition temperature ~164 K. DMA of pellets showed the minimum of the normalized storage modulus and the peaks of loss factor at ~164 K with weak frequency dependences. The normalized loss modulus reached the maximum near 145 K, with higher peak temperature at higher frequency. The elastic anomalies and energy dissipation near the ferroelectric transition temperature are caused by the coupling of the movements of dimethylammonium cations and twin walls.

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“…Over the last three decades,n umerous advanced porous materials (APMs) have been developed. Constructed from structure-encoded building blocks,A PMs such as metalorganic frameworks (MOFs), [1][2][3][4][5][6] covalent organic frameworks (COFs), [7][8][9][10][11][12][13][14] porous organic polymers (POPs), [15][16][17] hydrogen-bonded organic frameworks (HOFs), [18][19][20][21] and porous molecular solids [22,23] have performed exceptionally in many aspects of science and technology.S pecifically,t he controlled pore sizes and surface areas of APMs are advantageous for areas such as molecular adsorption and separation, [24][25][26][27][28][29][30] heterogeneous catalysis, [31][32][33][34][35][36][37] and chemical sensing. [38][39][40] More importantly,integrating moving elements,such as molecular rotors (i.e.amolecular component that usually consists of astator and arotator, where the latter can display rotational dynamics), into the robust frameworks of APMs forms molecular-rotor-driven advanced porous materials (MR-APMs).…”

Section: Introductionmentioning

confidence: 99%

Molecular‐Rotor‐Driven Advanced Porous Materials

et al. 2021

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Advanced porous materials (APMs)—such as metal‐organic frameworks (MOFs) and porous organic polymers (POPs)—have emerged as an exciting research frontier of chemistry and materials science. Given their tunable pore size and extensive diversity, APMs have found widespread applications. In addition, adding dynamic functional groups to porous solids furthers the development of stimuli‐responsive materials. By incorporating moving elements—molecular rotors—into the porous frameworks, molecular‐rotor‐driven advanced porous materials (MR‐APMs) can respond reversibly to chemical and physical stimuli, thus imparting dynamic functionalities that have not been found in conventional porous materials. This Minireview discusses exemplary MR‐APMs in terms of their design, synthesis, rotor dynamics, and potential applications.

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Filling metal–organic framework mesopores with TiO2 for CO2 photoreduction

Cited by 708 publications

References 37 publications

Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO₂‐to‐CH₄ Photoreduction

Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO₂‐to‐CH₄ Photoreduction

Elastic Properties and Energy Dissipation Related to the Disorder-Order Ferroelectric Transition in a Multiferroic Metal-Organic Framework [(CH3)2NH2][Fe(HCOO)3] with a Perovskite-Like Structure

Molecular‐Rotor‐Driven Advanced Porous Materials

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Filling metal–organic framework mesopores with TiO2 for CO2 photoreduction

Cited by 708 publications

References 37 publications

Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO2‐to‐CH4 Photoreduction

Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO2‐to‐CH4 Photoreduction

Elastic Properties and Energy Dissipation Related to the Disorder-Order Ferroelectric Transition in a Multiferroic Metal-Organic Framework [(CH3)2NH2][Fe(HCOO)3] with a Perovskite-Like Structure

Molecular‐Rotor‐Driven Advanced Porous Materials

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Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO₂‐to‐CH₄ Photoreduction

Revealing the Sudden Alternation in Pt@h‐BN Nanoreactors for Nearly 100% CO₂‐to‐CH₄ Photoreduction