Tailoring the electronic arrangement of graphene by doping is a practical strategy for producing significantly improved materials oxygen-reduction reaction (ORR) in fuel cells (FCs). Recent studies have proven that carbon doped with elements, which larger (N) or smaller (P, B) electronegative atoms than such as N-doped nanotubes (CNTs), P-doped graphite layers and B-doped CNTs, also shown pronounced catalytic activity. Herein, we find graphenes similar electronegativity sulfur selenium, can...

We have successfully constructed a new type of intercalation membrane material by covalently grafting organic tris(hydroxypropyl)phosphine (THPP) molecules onto hydroxylated multi-walled carbon nanotubes (CNT-OH) as functional interlayer for the advanced LSBs. The as-assembled has been demonstrated to be responsible fast conversion kinetics polysulfides, inhibition polysulfide shuttle effect, well formation stable solid electrolyte interphase(SEI) layer. By means spectroscopic and...

Abstract The development of highly efficient electrocatalysts for direct seawater splitting with bifunctionality inhibiting anodic oxidation reconstruction and selective oxygen evolution reactions is a major challenge. Herein, we report electrocatalyst that achieves long-term stability more than 1000 h at 600 mA/cm 2 @η high selectivity (Faraday efficiency 100%). This catalyst revolves an amorphous molybdenum oxide layer constructed on the beaded-like cobalt interface by atomic deposition...

The slow sulfur oxidation-reduction kinetics are one of the key factors hindering widespread use lithium-sulfur batteries (LSBs). Herein, flower-shaped NiS2 -WS2 heterojunction as functional intercalation LSBs is successfully prepared, and effectively improved reaction sulfur. Flower-like nanospheres composed ultra-thin nanosheets (≤10 nm) enhance quickly transfer mass charge. Meanwhile, heterostructures simultaneously serve an electron receptor a donor, thereby accelerating bidirectional...

Design and preparation of highly active hydrodesulfurization (HDS) catalysts is very important for the removal air pollution. Herein, we report an extraordinarily HDS catalyst, which synthesized by loading Pd on mesoporous zeolite Y (Pd/HY-M). The successfully using a water glass containing N,N-dimethyl-N-octadecyl-N-(3-triethoxysilylpropyl) ammonium [(C2H5O)3SiC3H6N(CH3)2C18H37]+ cation as mesoscale template. Compared with Beta ZSM-5 supported (80.0% 73.4% Pd/HBeta-M Pd/HZSM-5-M,...

Abstract We have demonstrated a flexible resistive random access memory unit with trilayer structure by atomic layer deposition (ALD). The device is composed of Al 2 O 3 /HfO /Al -based functional stacks on TiN-coated Si substrate. cross-sectional HRTEM image and XPS depth profile confirm the existence interfacial layers between structures after 600°C post-annealing. units Pt/Al /TiN/Si exhibit typical bipolar, reliable, reproducible switching behavior, such as stable resistance ratio...

Developing highly active hydrodesulfurization (HDS) catalysts is of great importance for producing ultraclean fuel. Herein we report on crystalline mordenite nanofibers (NB-MOR) with a bundle structure containing parallel mesopore channels. After the introduction cobalt and molybdenum (CoMo) species into mesopores micropores NB-MOR, NB-MOR-supported CoMo catalyst (CoMo/NB-MOR) exhibited an unprecedented high activity (99.1%) as well very good life in HDS 4,6-dimethyldibenzothiophene compared...

Concave Bi₂WO₆nanoplates with oxygen vacancies firstly achieved enhanced electrocatalytic evolution in near-neutral water.

The construction of heterostructures is one the most promising strategies for engineering interfaces catalysts to perform high-efficiency oxygen evolution reaction (OER). However, accurately tuning heterostructures' interface during operation remains a challenge. Herein, we fabricated needled-like heterostructure Co1-xS/Co(OH)F supported on flexible carbon fiber cloth via an atomic substitution strategy, in which sulfur atoms are simultaneously grafted into F vacancies after partial removal...

Reported herein is a highly active and durable hydrogen evolution reaction (HER) electrocatalyst, which constructed following tandem interface strategy functional in alkaline even neutral medium (pH ≈ 7). The ternary composite material, consisting of conductive nickel foam (NF) substrate, Ni3 S2 -MoS2 heterostructure, TiO2 coating, synthesized by the hydrothermal method atomic layer deposition (ALD) technique. Representative results include: (1) versatile characterizations confirm proposed...

Abstract Herein, we present the divergent syntheses of α‐arylacylamides and oxindoles via mechanoredox chemistry by using easily accessible α‐bromo N ‐sulfonyl amides as starting materials. Our system consists a catalytic amount Cu II precatalyst piezoelectric The highly polarized BaTiO 3 or PbTiO under mechanical agitation can act an electron donor to realize recycling I . Control experiments density functional theory calculations have been performed support proposed mechanistic rationale...

Abstract Design and construction of stable single‐atom modified catalysts with suppressed deep reconstruction for long‐term durability highly active targeted catalysis in emains a great challenge. Herein, nitrogen/oxygen co‐doped carbon (NOC) encapsulated Mo atomically dispersed at Co 3+ sites 3 O 4 , are constructed through directed corrosion strategy. Meanwhile, the NOC confinement maintains stability single atoms promotes adsorbate evolution into lattice oxygen‐mediated mechanism. The...

Inspired by recent experimental fabrication of mono-halogenated versions Metal-Organic Framework MOF-5 (i.e., X-MOF-5, X = F to I) and some experimentally known fully halogenated MOF compounds, we systematically studied frameworks incorporating full halogenation the BDC linkers prototypical Iso-Reticular (IRMOF) series, exemplified MOF-5. Using quantum chemistry calculations, find that leads a 90° rotation aryl group, which is mainly ascribed overcrowding between halogen atoms carboxyl...

Atomic layer deposition (ALD) is a powerful nanofabrication technique for the preparation of uniform, conformal, and ultrathin films allows accurate control composition thickness thin at atomic level. To date, ALD has been used growth various materials, including oxides, nitrides, sulfides, metals, elements, compound semiconductors, organic organic–inorganic hybrid materials. As one most important inorganic silicon dioxide (SiO2) in fields microelectronics, catalysis, energy storage...

Abstract The sluggish kinetics in multistep sulfur redox reaction with different energy requirements for each step, is considered as the crucial handicap of lithium–sulfur (Li–S) batteries. Designing an electron reservoir, which can dynamically release to/accept from species during discharge/charge, ideal strategy realizing stepwise and dual‐directional polysulfide electrocatalysis. Herein, a single Tb 3+/4+ oxide moderate unfilled f orbital synthetized reservoir to optimize adsorption via...

We report that 5-fold twinned nanowires and single right bipyramids of Pd with high yields can be selectively synthesized in a hydrophilic system the assistance acetonitrile ethanol, respectively. The controlled synthesis is based on an idea small organic molecules (SOMs) attract halide ions via electrostatic interactions different strengths could well adjust their activity to tune etching degree O2/halides for protecting crystal nucleus. consider relatively stronger interaction between...

The superconductivity of hydrides under high pressure has attracted a great deal attention since the recent observation superconducting transition at 203 K in strongly compressed H2S. It been realized that stoichiometry might change pressure, which is crucial understanding mechanism. In this study, PH3 was studied to understand its and using Raman, IR X-ray diffraction measurements, as well theoretical calculations. stable below 11.7 GPa then it starts dehydrogenate through two dimerization...

O-doped Sb₂S₃ nanosheets as a high-performance catalyst can effectively mitigate the shuttle effect, achieving outstanding electrochemical performance of lithium–sulfur batteries.

The bismuth oxycarbonate (Bi 2 O CO 3 ) material with a strong electric field as intercalation of lithium-sulfur battery to effectively catalyze the transformation polysulfide and inhibit shuttle effect. effect polysulfides is major challenge for commercialization battery. systematic modification separators has potential solve these problems by enhancing adsorption catalytic conversion polysulfides. Herein, internal nanoflowers decorated conductive carbon (DC+BOC) proposed be systematically...

Bimetallic layered double hydroxide is considered an ideal electrocatalytic material. However, due to the poor electrical conductivity of bimetallic structure, obtaining highly active and stable catalysts through facile regulation strategies remains a great challenge. Herein, we use simple corrosion strategy nitrogen plasma technology convert cobalt-based metal–organic frameworks into nitrogen-doped CoMn hydroxides (CoMn-LDH). Under condition regulating local coordination environment...

Plasma-enhanced atomic layer deposition (PE-ALD) has been applied to prepare high-quality ultrathin films for microelectronics, catalysis, and energy applications. The possible pathways SiO2 PE-ALD using aminosilanes O2 plasma have investigated by density functional theory calculations. silane half-reaction between SiH4 surface -OH is very difficult requires a high activation free of 57.8 kcal mol(-1). introduction an aminosilane, such as BDMAS, can reduce the 11.0 mol(-1) aminosilane plays...

First principles molecular dynamics indicates that, in contrast to previous classical simulations, hydroxyl radicals favor “subsurface solvation” instead of “surface solvation”.