We have successfully prepared nanoporous Carbon-L and -S materials by using ZIF-7 as a precursor glucose an additional carbon source. Results indicate that show appropriate nitrogen content, high surface area, robust pore structure excellent graphitization degree. The addition of environmentally friendly source – not only improves the degree samples, but also plays key role in removing residual Zn metal zinc compound impurities, which makes resulting metal-free situ nitrogen-doped porous...

As a fundamental step of water splitting and stepping stone toward exploring other multielectron transfer processes, the electrocatalytic hydrogen evolution reaction (HER) is an ideal model for both understanding electrocatalyst design. Here, we review fundamentals recent developments theoretical insights into HER, covering mechanistic aspects, key activity descriptors, local environment considerations, advances beyond computational electrode. Although it experimentally challenging to...

We report the fabrication of homoleptic alkynyl-protected Ag15 (C≡C-t Bu)12+ (abbreviated as ) nanocluster and its electrocatalytic properties toward CO2 reduction reaction. Crystal structure analysis reveals that possesses a body-centered-cubic (BCC) with an Ag@Ag8 @Ag6 metal core configuration. Interestingly, we found can adsorb in air spontaneously self-assembled into one-dimensional linear material during crystal growth process. Furthermore, convert CO faradaic efficiency ca. 95.0 % at...

While atomically monodisperse nanostructured materials are highly desirable to unravel the size- and structure-catalysis relationships, their controlled synthesis atomic-level structure determination pose challenges. Particularly, copper-containing precise alloy nanoclusters potential catalyst candidates for electrochemical CO2 reduction reaction (eCO2RR) due high abundance tunable catalytic activity of copper. Herein, we report total an alkynyl-protected 21-atom AgCu nanocluster...

Electrochemically converting NO3- compounds into ammonia represents a sustainable route to remove industrial pollutants in wastewater and produce valuable chemicals. Bimetallic nanomaterials usually exhibit better catalytic performance than the monometallic counterparts, yet unveiling reaction mechanism is extremely challenging. Herein, we report an atomically precise [Ag30Pd4 (C6H9)26](BPh4)2 (Ag30Pd4) nanocluster as model catalyst toward electrochemical reduction (eNO3-RR) elucidate...

Unraveling the atomistic synergistic effects of nanoalloys on electrocatalytic CO2 reduction reaction (eCO2RR), especially in presence copper, is paramount importance. However, this endeavor encounters significant challenges due to lack crystallographically determined atomic-level structure appropriate monometallic and bimetallic analogues. Herein, we report a one-pot synthesis characterization AuCu nanoalloy cluster catalyst, [Au15Cu4(DPPM)6Cl4(C≡CR)1]2+ (denoted as Au15Cu4). Single-crystal...

Using ligand-protected Au 25 nanoclusters as a prototype model, we demonstrated that hydrophilic ligands enhance the hydrogen evolution reaction while hydrophobic improve efficiency of CO 2 electroreduction to CO.

A series of ZIF-derived porous carbon materials are prepared via co-carbonization ZIF-7 and additional sources, such as glucose, ethylene glycol, glycerol furfuryl alcohol. Results indicate that ZIF-7/glucose composite-derived Carbon-L-950 an electrode for the electrochemical capacitor exhibits a high specific capacitance 228 F g−1 in 6 M KOH at current density 0.1 g−1, even 178 10 good stability over 5000 cycles. Moreover, conductive agent (like acetylene black) is not required preparation...

We report the first all-alkynyl-protected Au 2 Ag 8 Cu 5 cluster, which adopts a M@M @M 6 core configuration similar with 7 /Ag 9 clusters. The three clusters exhibited strong metal effect toward CO RR, was understood by DFT calculations.

The catalytic activity and product selectivity of the electrochemical CO

A series of Norrish type I photoinitiators (NASs), which are naphthalimide aryl sulfide derivatives, prepared. The potential mechanism involved in the photolysis NASs under UV LED at 405 nm is investigated by steady-state photolysis, nuclear magnetic resonance, electron spin fluorescence spectroscopy, cyclic voltammetry, and laser flash calculating bond dissociation energies C–S bonds NASs. as-prepared NAS5 NAS6 can efficiently initiate free radical photopolymerization (methyl)acrylate...

Photocured materials with self-healing function have the merit of long lifetime and environmentally benign preparation process thus find potential applications in various fields. Herein, a novel imidazolium-containing photocurable monomer, (6-(3-(3(2-hydroxyethyl)-1H-imidazol-3-ium bromide)propanoyloxy)hexyl acrylate, IM-A), was designed synthesized. Self-healing polymers were prepared by fast photocuring IM-A, isobornyl 2-(2-ethoxyethoxy)ethyl 2-hydroxyethyl acrylate as monomers. The...

Accurate identification of active sites is highly desirable for elucidation the reaction mechanism and development efficient catalysts. Despite promising catalytic performance thiolated metal nanoclusters (NCs), their actual remain elusive. Traditional first-principles calculations experimental observations suggested dealkylated S dethiolated metal, respectively, to be centers. However, real kinetic origin thiolate etching during electrocatalysis NCs still puzzling. Herein, we conducted...

We designed and prepared a series of methyl benzoylformate (MBF) derivatives Norrish type I photoinitiators (MBFs) for light-emitting diode (LED)-induced photopolymerization through computer simulation. The potential photolysis mechanism MBFs under LED at 405 nm was explored by steady-state photolysis, nuclear magnetic resonance, electron spin resonance. as-synthesized photoinitiator dimethyl 1,4-dibenzoylformate (DM-BD-F) can efficiently initiate free radical acrylate monomers irradiation...

Considering the promising prospects of Au25(SR)18q and its alloy clusters in numerous fundamental catalysis research studies derived from their well-defined structures, developing a deep understanding structure–property correlation becomes significantly urgent. Herein, we explored prototype [Au25(SR)18]q cluster, monoatom-doped bimetallic [MAu24(SR)18]q (M = Pt, Pd, Ag, Cu, Hg, or Cd), singly deligated M-exposure S-exposure systems as electrocatalysts toward O2 reduction reaction (ORR) at...

Bimetallic Palladium-based catalysts as an alternative of Pt-free electrocatalysts play a vital role in electrocatalysis. The doping transition metal (M) into the ultrathin Pd nanosheets is new promising strategy to regulate reactivity and durability surface sites. In this work, in-depth investigation origin oxygen reduction reaction (ORR) activity stability over 2D PdM bimetallenes presented. M can greatly modify site by changing local Fermi softness (SF(r) ). All follow dissociative 4e-...

Photo-reactive nanogels with an integrated photoinitiator-based functionality were synthesized via a Reversible Addition-Fragmentation Chain Transfer (RAFT) process. Without additional free initiators, this nanogel is capable of radical generation and initiating polymerization secondary monomer (i.e. dimethacrylate) that infiltrates disperses the particles. Due to presence RAFT fact all sites are initially located within structure, gelation can be delayed by sequencing from bulk matrix....

Abstract MQ silicone resins, which represent a broad range of hydrolytic condensation products monofunctional silane (M) and tetrafunctional (Q), were synthesized by reaction water glass with hexamethyldisiloxane. The optimum time the optimal temperature is 30 min 30–40°C, respectively. Concentrated hydrochloric acid best one among those catalysts tested. In large‐scale experiments (420–1680 mL), favorable feeding order catalyst first, then glass, mixture hexamethyldisiloxane ethanol last...

A photosensitive silicone-containing polyurethane acrylate prepolymer (Si-IPDI-HEA) was synthesized and characterized adequately by FTIR, 1H NMR, GPC analyses. The effect of the monomers on photopolymerization kinetics Si-IPDI-HEA investigated real-time infrared spectroscopy (RT-IR). results showed that resin with common acrylic exhibited a high polymerization rate double-bond conversion. influence monomer silicone microstructure properties UV-cured film also systematically studied. It found...

Three water-soluble polysiloxane benzophenone photoinitiators (W-Si-HBP2-A/B/C) with various silicon content used for preparing a gradient polymer were synthesized based on the traditional photoinitiator 4-hydroxybenzophenone (HBP) and aminopolysiloxane. The structures confirmed by proton nuclear magnetic resonance (1H NMR), gel permeation chromatography (GPC). water solubility of photoinitiators, effect their triplet state lifetimes photopolymerization property self-floating ability in...