Carbon capture and conversion using metal–organic frameworks and MOF-based materials

Chemical Society Reviews, Год журнала: 2019, Номер 48(10), С. 2783 - 2828

Опубликована: Янв. 1, 2019

Rapidly increasing atmospheric CO2 concentrations threaten human society, the natural environment, and synergy between two. In order to ameliorate problem, carbon capture conversion techniques have been proposed. Metal-organic framework (MOF)-based materials, a relatively new class of porous materials with unique structural features, high surface areas, chemical tunability stability, extensively studied respect their applicability such techniques. Recently, it has become apparent that capabilities MOF-based significantly boost potential toward conversion. Furthermore, materials' well-defined structures greatly facilitate understanding structure-property relationships roles in this review, we provide comprehensive account significant progress design synthesis including MOFs, MOF composites derivatives, application Special emphases on capacities catalytic performances are discussed.

Язык: Английский

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Cocatalysts for Selective Photoreduction of CO₂into Solar Fuels

Chemical Reviews, Год журнала: 2019, Номер 119(6), С. 3962 - 4179

Опубликована: Фев. 14, 2019

Photoreduction of CO2 into sustainable and green solar fuels is generally believed to be an appealing solution simultaneously overcome both environmental problems energy crisis. The low selectivity challenging multi-electron photoreduction reactions makes it one the holy grails in heterogeneous photocatalysis. This Review highlights important roles cocatalysts selective photocatalytic reduction using semiconductor catalysts. A special emphasis this review placed on key role, design considerations modification strategies for photoreduction. Various cocatalysts, such as biomimetic, metal-based, metal-free, multifunctional ones, their are summarized discussed, along with recent advances area. provides useful information highly photo(electro)reduction electroreduction complements existing reviews various photocatalysts.

Язык: Английский

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Recent advances in metal sulfides: from controlled fabrication to electrocatalytic, photocatalytic and photoelectrochemical water splitting and beyond

Chemical Society Reviews, Год журнала: 2019, Номер 48(15), С. 4178 - 4280

Опубликована: Янв. 1, 2019

This review describes an in-depth overview and knowledge on the variety of synthetic strategies for forming metal sulfides their potential use to achieve effective hydrogen generation beyond.

Язык: Английский

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Formation of Hierarchical Co₉S₈@ZnIn₂S₄ Heterostructured Cages as an Efficient Photocatalyst for Hydrogen Evolution

Journal of the American Chemical Society, Год журнала: 2018, Номер 140(45), С. 15145 - 15148

Опубликована: Окт. 31, 2018

Here we demonstrate the delicate design and construction of hierarchical Co9S8@ZnIn2S4 heterostructured cages as an efficient photocatalyst for hydrogen evolution with visible light. Two photoactive sulfide semiconductors are rationally integrated into a hollow structure strongly coupled heterogeneous shells two-dimensional ultrathin subunits. The unique architecture can efficiently facilitate separation transfer light-induced charges, offer large surface area, expose rich active sites photocatalytic redox reactions. Owing to distinctive structural compositional benefits, heterostructures without using any cocatalysts show remarkable activity hydrogen-producing rate 6250 μmol h–1 g–1 high stability water splitting.

Язык: Английский

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Core–shell structured catalysts for thermocatalytic, photocatalytic, and electrocatalytic conversion of CO₂

Chemical Society Reviews, Год журнала: 2020, Номер 49(10), С. 2937 - 3004

Опубликована: Янв. 1, 2020

Catalytic conversion of CO2 to produce fuels and chemicals is attractive in prospect because it provides an alternative fossil feedstocks the benefit converting cycling greenhouse gas on a large scale. In today's technology, converted into hydrocarbon Fischer-Tropsch synthesis via water shift reaction, but processes for direct such as methane, methanol, C2+ hydrocarbons or syngas are still far from large-scale applications processing challenges that may be best addressed by discovery improved catalysts-those with enhanced activity, selectivity, stability. Core-shell structured catalysts relatively new class nanomaterials allow controlled integration functions complementary materials optimised compositions morphologies. For conversion, core-shell can provide distinctive advantages addressing catalyst sintering activity loss reforming processes, insufficient product selectivity thermocatalytic hydrogenation, low efficiency photocatalytic electrocatalytic hydrogenation. preceding decade, substantial progress has been made synthesis, characterization, evaluation potential applications. Nonetheless, remain inexpensive, robust, regenerable this class. This review in-depth assessment these thermocatalytic, photocatalytic, valuable hydrocarbons.

Язык: Английский

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In situ Irradiated XPS Investigation on S‐Scheme TiO₂@ZnIn₂S₄ Photocatalyst for Efficient Photocatalytic CO₂ Reduction

Small, Год журнала: 2021, Номер 17(41)

Опубликована: Сен. 12, 2021

Reasonable design of efficient hierarchical photocatalysts has gained significant attention. Herein, a step-scheme (S-scheme) core-shell TiO2 @ZnIn2 S4 heterojunction is designed for photocatalytic CO2 reduction. The optimized sample exhibits much higher photoreduction conversion rates (the sum yield CO, CH3 OH, and CH4 ) than the blank control, i.e., ZnIn2 . improved performance can be attributed to inhibited recombination photogenerated charge carriers induced by S-scheme heterojunction. improvement also large specific surface areas abundant active sites. Meanwhile, transfer mechanism testified in situ irradiated X-ray photoelectron spectroscopy, work function calculation, electron paramagnetic resonance measurements. This provides an effective strategy designing highly solar fuels.

Язык: Английский

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Photocatalytic CO2 reduction over metal-organic framework-based materials

Coordination Chemistry Reviews, Год журнала: 2020, Номер 412, С. 213262 - 213262

Опубликована: Март 10, 2020

Язык: Английский

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Ultrathin ZnIn₂S₄ Nanosheets Anchored on Ti₃C₂T_X MXene for Photocatalytic H₂ Evolution

Angewandte Chemie International Edition, Год журнала: 2020, Номер 59(28), С. 11287 - 11292

Опубликована: Апрель 6, 2020

Photocatalysts derived from semiconductor heterojunctions that harvest solar energy and catalyze reactions still suffer low solar-to-hydrogen conversion efficiency. Now, MXene (Ti3 C2 TX ) nanosheets (MNs) are used to support the in situ growth of ultrathin ZnIn2 S4 (UZNs), producing sandwich-like hierarchical heterostructures (UZNs-MNs-UZNs) for efficient photocatalytic H2 evolution. Opportune lateral epitaxy UZNs on surface MNs improves specific area, pore diameter, hydrophilicity resulting materials, all which could be beneficial activity. Owing Schottky junction 2D structures MNs, effectively suppress photoexcited electron-hole recombination boost charge transfer separation. The heterostructure photocatalyst exhibits improved evolution performance (6.6 times higher than pristine excellent stability.

Язык: Английский

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Amino‐Assisted Anchoring of CsPbBr₃ Perovskite Quantum Dots on Porous g‐C₃N₄ for Enhanced Photocatalytic CO₂ Reduction

Angewandte Chemie International Edition, Год журнала: 2018, Номер 57(41), С. 13570 - 13574

Опубликована: Авг. 30, 2018

Abstract Halide perovskite quantum dots (QDs) have great potential in photocatalytic applications if their low charge transportation efficiency and chemical instability can be overcome. To circumvent these obstacles, we anchored CsPbBr 3 QDs (CPB) on NH x ‐rich porous g‐C N 4 nanosheets (PCN) to construct the composite photocatalysts via N−Br bonding. The 20 CPB‐PCN (20 wt % of QDs) photocatalyst exhibits good stability an outstanding yield 149 μmol h −1 g acetonitrile/water for reduction CO 2 under visible light irradiation, which is around 15 times higher than that QDs. This study opens up new possibilities using halide application.

Язык: Английский

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Core@Shell CsPbBr₃@Zeolitic Imidazolate Framework Nanocomposite for Efficient Photocatalytic CO₂ Reduction

ACS Energy Letters, Год журнала: 2018, Номер 3(11), С. 2656 - 2662

Опубликована: Окт. 4, 2018

The proper energy band structure and excellent visible-light responses enable halide perovskites as potential photocatalysts for CO2 reduction, but the conversion efficiency is still low due to serious radiative recombination, capturing ability, poor stability. Here we illustrate design synthesis of a perovskite@metal–organic framework (MOF) composite photocatalyst with enhanced reduction activity. A facile in situ synthetic procedure employed directly grow zinc/cobalt-based zeolitic imidazolate (ZIF) coating on surface CsPbBr3 quantum dots. CsPbBr3@ZIF shows largely improved moisture stability, charge separation efficiency. Moreover, catalytic active Co centers ZIF-67 can further accelerate process activate adsorbed molecules, which leads activity gaseous reduction. This work would provide new insight designing perovskite/MOF-based catalysts.

Язык: Английский

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