Catalyzing Artificial Photosynthesis with TiO₂ Heterostructures and Hybrids: Emerging Trends in a Classical yet Contemporary Photocatalyst

Advanced Materials, Год журнала: 2023, Номер 36(17)

Опубликована: Окт. 11, 2023

Titanium dioxide (TiO

---

Structural Motifs in Covalent Organic Frameworks for Photocatalysis

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Март 10, 2024

Abstract Covalent organic frameworks (COFs) attract significant attention due to their ordered, crystalline, porous, metal‐free, and predictable structures. These unique characteristics offer great opportunities for the diffusion transmission of photogenerated charges during photocatalysis. Currently, a considerable number COFs are used as metal‐free semiconductor photocatalysts. This review aims understand relationships between structure photocatalysis performance provides in‐depth insight into synthetic strategy improve performance. Subsequently, focuses on structural motif in sustainable photocatalytic hydrogen evolution, carbon dioxide reduction, peroxide generation, compound transformations. Last, conjunction with progress achieved challenges yet be overcome, candid discussion is undertaken regarding field COF photocatalysis, accompanied by presentation potential research avenues future directions. seeks provide readers comprehensive understanding pivotal role robust guidance innovative utilization

Язык: Английский

---

Progress of Photocapacitors

Chemical Reviews, Год журнала: 2023, Номер 123(15), С. 9327 - 9355

Опубликована: Июнь 9, 2023

In response to the current trend of miniaturization electronic devices and sensors, complementary coupling high-efficiency energy conversion low-loss storage technologies has given rise development photocapacitors (PCs), which combine in a single device. Photovoltaic systems integrated with supercapacitors offer unique light capabilities, resulting improved overall efficiency over past decade. Consequently, researchers have explored wide range device combinations, materials, characterization techniques. This review provides comprehensive overview photocapacitors, including their configurations, operating mechanisms, manufacturing techniques, focus on emerging applications small wireless devices, Internet Things (IoT), Everything (IoE). Furthermore, we highlight importance cutting-edge materials such as metal–organic frameworks (MOFs) organic for supercapacitors, well novel photovoltaics, advancing PCs carbon-free, sustainable society. We also evaluate potential development, prospects, application scenarios this area research.

Язык: Английский

---

Molecular Ratchets and Kinetic Asymmetry: Giving Chemistry Direction

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(23)

Опубликована: Апрель 3, 2024

Abstract Over the last two decades ratchet mechanisms have transformed understanding and design of stochastic molecular systems—biological, chemical physical—in a move away from mechanical macroscopic analogies that dominated thinking regarding dynamics in 1990s early 2000s (e.g. pistons, springs, etc), to more scale‐relevant concepts underpin out‐of‐equilibrium research sciences today. Ratcheting has established nanotechnology as frontier for energy transduction metabolism, enabled reverse engineering biomolecular machinery, delivering insights into how molecules ‘walk’ track‐based synthesisers operate, acceleration reactions enables be transduced by catalysts (both motor proteins synthetic catalysts), dynamic systems can driven equilibrium through catalysis. The recognition biology, their invention systems, is proving significant areas diverse supramolecular chemistry, covalent DNA nanotechnology, polymer materials science, heterogeneous catalysis, endergonic synthesis, origin life, many other branches science. Put simply, give chemistry direction. Kinetic asymmetry, key feature ratcheting, counterpart structural asymmetry (i.e. chirality). Given ubiquity processes significance behaviour function it surely just fundamentally important. This Review charts recognition, development ratchets, focussing particularly on role which they were originally envisaged elements machinery. Different kinetically asymmetric are compared, consequences discussed. These archetypal examples demonstrate inexorably equilibrium, rather than relax towards it.

Язык: Английский

---

Asymmetric Atomic Dual‐Sites for Photocatalytic CO₂ Reduction

Advanced Materials, Год журнала: 2024, Номер 36(38)

Опубликована: Июль 23, 2024

Abstract Atomically dispersed active sites in a photocatalyst offer unique advantages such as locally tuned electronic structures, quantum size effects, and maximum utilization of atomic species. Among these, asymmetric dual‐sites are particular interest because their charge distribution generates local built‐in electric potential to enhance separation transfer. Moreover, the dual provide flexibility for tuning complex multielectron multireaction pathways, CO 2 reduction reactions. The coordination opens new possibilities engineering structure–activity–selectivity relationship. This comprehensive overview discusses efficient sustainable photocatalysis processes photocatalytic reduction, focusing on strategic active‐site design future challenges. It serves timely reference development conversion processes, specifically exploring here exemplified by into valuable chemicals.

Язык: Английский

---

Revealing electron numbers-binding energy relationships in heterojunctions via in-situ irradiated XPS

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 356, С. 124223 - 124223

Опубликована: Май 22, 2024

Язык: Английский

---

Catalytic Deracemization Reactions

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(20), С. 10917 - 10929

Опубликована: Май 13, 2023

Deracemization, which converts a racemate into its single enantiomer without separation of the intermediate, has gained renewed interest in asymmetric synthesis with inherent atomic economy and high efficiency. However, this ideal process requires selective energy input delicate reaction design to surmount thermodynamical kinetical constraints. With rapid development catalysis, many catalytic strategies concert exogenous have been exploited facilitate nonspontaneous enantioenrichment. In perspective, we will discuss basic ideas accomplish deracemization, categorized by three major sources including chemical (redox)-, photo- mechanical from attrition. Emphasis be given features underlying deracemization mechanism together perspectives on future development.

Язык: Английский

---

Emerging Trends in Copper-Promoted Radical-Involved C–O Bond Formations

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(32), С. 17527 - 17550

Опубликована: Авг. 2, 2023

The C–O bond is ubiquitous in biologically active molecules, pharmaceutical agents, and functional materials, thereby making it an important group. Consequently, the development of bond-forming reactions using catalytic strategies has become increasingly research topic organic synthesis because more conventional methods involving strong base acid have many limitations. In contrast to ionic-pathway-based methods, copper-promoted radical-mediated formation experiencing a surge interest owing renaissance free-radical chemistry photoredox catalysis. This Perspective highlights appraises state-of-the-art techniques this burgeoning field. contents are organized according different reaction types working models.

Язык: Английский

---

Ratcheting synthesis

Nature Reviews Chemistry, Год журнала: 2023, Номер 8(1), С. 8 - 29

Опубликована: Дек. 15, 2023

Язык: Английский

---

Radical thioesterification via nickel-catalysed sensitized electron transfer

Nature Synthesis, Год журнала: 2023, Номер 2(11), С. 1116 - 1126

Опубликована: Июль 10, 2023

Abstract Multi-catalytic reaction modes have attracted widespread attention in synthetic chemistry. The merger of nickel catalysis with photoredox has offered a powerful platform for synthesis molecules attractive properties. Nonetheless, the conceptual development nickel-catalysed, sensitized electron transfer is pivotal relevance, but still greatly limited. Here we describe radical cross-thioesterification process by nickel-catalysed transfer. strategy can produce diverse methyl thioesters, which are not only found natural products, materials and pharmaceuticals also precursors chemistry biological processes. This catalytic mode features high chemoselectivity, good functional group tolerance excellent scalability. Perhaps more important was finding that various drugs amino acids were successfully functionalized this system. Experimental studies, nanosecond transient spectroscopic analysis, density theory calculations reveal photocatalytic transfer, energy plays an essential role thioesterification reaction.

Язык: Английский

---