Graphdiyne (GDY), a novel large π-conjugated carbon material, for the first time, is introduced as hole transfer layer into photoelectrochemical water splitting cell (PEC). Raman and ultraviolet photoelectron spectroscopic studies indicate existence of relatively strong π–π interactions between GDY 4-mercaptopyridine surface-functionalized CdSe quantum dots, beneficial to transportation enhancement photocurrent performance. Upon exposure Xe lamp, integrated photocathode produces current...

A general and simple route to fabricate graphdiyne nanowalls on arbitrary substrates is developed by using a copper envelope catalysis strategy. The GDY/BiVO4 system but one example of combing the unique properites GDY with those target where improves photoelectrochemical performance dramatically.

Graphdiyne (GDY), with highly π-conjugated structure of sp2- and sp-hybridized carbons, has recently appeared as an allotropic form carbon nanomaterials. However, the application this material is far behind its sister graphene. Herein, we attempt to use GDY catalyst–support stabilize cobalt nanoparticles for oxygen evolution, which considered bottleneck water splitting. In terms close interaction between metal ions alkyne networks, self-supported electrode made in situ by a facile chemical...

This review summarizes the recent progress of GDY based catalysts for key gas involved reactions in energy conversion.

Direct activation of H-phosphine oxide to react with an unsaturated carbon–carbon bond is a straightforward approach for accessing alkenylphosphine oxides, which shows significant applications in both synthetic and material fields. However, expensive metals strong oxidants are typically required realize the transformation. Here, we demonstrate utility earth-abundant cobaloxime convert into its reactive radical species under visible light irradiation. The thus generated can be utilized...

Abstract Metal–organic frameworks (MOFs) with tunable compositions and morphologies are recognized as efficient self‐sacrificial templates to achieve function‐oriented nanostructured materials. Moreover, it is urgently needed develop highly noble metal‐free oxygen evolution reaction (OER) electrocatalysts accelerate the development of overall water splitting green energy conversion systems. Herein, a facile cost‐efficient strategy synthesize Co 9 S 8 nanoparticles‐embedded N/S‐codoped carbon...

Abstract Graphdiyne (GDY), with a highly π‐conjugated structure of sp 2 ‐ and sp‐hybridized carbon, has triggered huge interest in water splitting. However, all the systems perform no consideration surface wettability GDY. Herein, for first time, fabrication superhydrophilic GDY electrode via air‐plasma oxygen evolution is described. As representative catalyst, ultrathin CoAl‐LDH (CO 3 2− ) nanosheets have been successfully assembled onto electrostatically. The resulting CoAl‐LDH/GDY...

Abstract Inspired by the cubic Mn 4 CaO 5 cluster of natural oxygen‐evolving complex in Photosystem II, tetrametallic molecular water oxidation catalysts, especially M O cubane‐like clusters (M=transition metals), have aroused great interest developing highly active and robust catalysts for oxidation. Among these clusters, however, copper‐based are poorly understood. Now, bio‐inspired Cu cubanes presented as effective electrocatalytic aqueous solution (pH 12). The exceptional catalytic...

An earth-abundant, low-cost cobalt porphyrin complex (CoTCPP) is designed as a molecular catalyst to work on three-dimensional BiVO4 film electrode for water oxidation the first time. Under illumination of 100 mW cm–2 Xe lamp, CoTCPP-functionalized photoanode exhibits 2-fold enhancement in photocurrent density at 1.23 V vs RHE and nearly 450 mV cathodic shift 0.5 mA cm−2 relative bare 0.1 M Na2SO4 (pH = 6.8). Simultaneously, stoichiometric oxygen hydrogen are generated with faradic...

Transition-metal carbide (TMC), because of its electronic conductivity, chemical stability, and physical properties, has aroused widespread interest in catalysis. Here, we have systematically studied the photocatalytic hydrogen (H2) evolution metallic cobalt (Co2C) by a combination theoretical experimental investigations. In terms intrinsic proton reduction property Co2C (020) facet facile interficial electron transfer, assembled architecture quantum dots (QDs)/Co2C can give rate ∼18 000...

Abstract Graphdiyne (GDY), which features a highly π‐conjugated structure, direct bandgap, and high charge carrier mobility, presents the major requirements for photocatalysis. Up to now, all photocatalytic studies are performed without paying too much attention on GDY bandgap (1.1 eV at G 0 W many‐body theory level). Such narrow is not suitable band alignment between other semiconductors, making it difficult achieve efficient photogenerated separation. Herein, first time, demonstrated that...

Abstract Regulating the coordination environment via heteroatoms to break symmetrical electronic structure of M‐N 4 active sites provides a promising route engineer metal‐nitrogen‐carbon catalysts for electrochemical CO 2 reduction reaction. However, it remains challenging realize site‐specific introduction at atomic level due their energetically unstable nature. Here, this paper reports facile using an oxygen‐ and nitrogen‐rich metal–organic framework (MOF) (IRMOF‐3) as precursor construct...

A facile deprotection-free method to in situ grow GDY on a C 3 N 4 surface is developed. This straightforward strategy enables the formation of an integral GDY@C heterojunction, leading enhanced photocatalytic activity.

The M(N) S = (3)/(2) resting state of the FeMo cofactor nitrogenase has been proposed to have metal-ion valencies either Mo(4+)6Fe(2+)Fe(3+) (derived from metal hyperfine interactions) or Mo(4+)4Fe(2+)3Fe(3+) (from Mössbauer isomer shifts). Spin-polarized broken-symmetry (BS) density functional theory (DFT) calculations undertaken determine which oxidation level best represents and provide a framework for understanding its energetics spectroscopy. For state, spin coupling pattern several...

Irradiation of a mixture enamines and α-bromo ketones, with catalytic amount Ir(ppy)3 by visible light (λ = 450 nm), enables the production various 2,5-diaryl-substituted pyrroles in good to excellent yields. The key intermediates this reaction have been identified as alkyl radicals, generated from single-electron transfer photoexcited Ir(ppy)3* which subsequently react broad range undergo Hantzsch rapidly at ambient conditions.

The photo-conversion efficiency is a key issue in the development of new photocatalysts for solar light driven water splitting applications. In recent years, different engineering strategies have been proposed to improve photogeneration and lifetime charge carriers nanostructured photocatalysts. particular, rational design heterojunctions composites obtain peculiar physico-chemical properties has achieved more efficient formation separation comparison their individual component materials....

Surface stoichiometry of QDs is a sensitive parameter affecting the photocatalytic activity H₂ evolution.

Photoelectrochemistry enables the formation of a variety active intermediates for organic synthesis in an environmentally friendly manner. Herein, photoelectrochemical cell is fabricated to realize activation P-H/C-H bonds cross-coupling hydrogen evolution. As compared with electrochemical cell, nearly 90% external bias input saved drive C-P bond construction good excellent yields.

With a direct band gap, superior charge carrier mobility, and uniformly distributed pores, graphdiyne (GDY) has stimulated tremendous interest from the scientific community. However, its broad application is greatly limited by complicated multistep synthesis process including complex deprotection of hexakis-[(trimethylsilyl)ethynyl]benzene (HEB-TMS) peeling GDY substrates. Here, we describe deprotection-free strategy to prepare powder directly using HEB-TMS as monomer. When CuCl was used...

Comprehensive Summary Currently, solid‐state fluorescent carbonized polymer dots (CPDs) have attracted attention increasingly due to their applications for optoelectronic display. However, designing CPDs possessing fluorescence and clarifying the mechanism remain challenging. Herein, we initially synthesized a novel type of polythiophene derivatives CPDs, poly‐4,4’‐(thiophene‐3,4‐diyl)dibenzoic acid (PDBA‐CPDs) with fluorescence. Subsequently, structural optical characterization revealed...