Thermally removable nanoparticle templates were used for the fabrication of self-supported N-doped mesoporous carbons with a trace amount Fe (Fe-N/C). Experimentally Fe-N/C was prepared by pyrolysis poly(2-fluoroaniline) (P2FANI) containing number FeO(OH) nanorods that one-pot hydrothermal synthesis and homogeneously distributed within polymer matrix. The nanocrystals acted as rigid to prevent collapse P2FANI during carbonization process, where skeleton formed medium surface area about 400...

In this study, a general and effective phosphorization strategy is successfully demonstrated to enhance supercapacitor performance of various transition metals oxide or hydroxide, such as Ni(OH) 2 , Co(OH) MnO Fe O 3 . For example, 3D networked Ni P nanosheets array via facile reaction grown on the surface foam. The foam‐supported nanosheet (Ni NS/NF) electrode shows remarkable specific capacitance 2141 F g −1 at scan rate 50 mV s remains high 1109 even current density 83.3 A much larger...

Development of non-noble-metal catalysts for hydrogen evolution reaction (HER) with both excellent activity and robust stability has remained a key challenge in the past decades. Herein, first time, N-doped carbon-wrapped cobalt nanoparticles supported on graphene nanosheets were prepared by facile solvothermal procedure subsequent calcination at controlled temperatures. The electrocatalytic HER was examined 0.5 M H2SO4. Electrochemical measurements showed small overpotential only −49 mV...

Porous metallic MoO₂-supported MoS₂ nanosheets exhibit excellent electrocatalytic activity for HER and robust electrochemical durability.

To date, controversies remain in the unambiguous identification of active sites N-doped carbons for oxygen reduction reaction (ORR). In present study, prolonged potential cycling was conducted on three O2-saturated 0.1 M KOH aqueous solution, where apparent attenuation ORR activity observed, within context limiting current and onset potential. The trend closely correlated with diminishing content graphitic N, as manifested X-ray photoelectron spectroscopy measurements Mott–Schottky analysis....

Abstract Single-atom catalysts have been widely investigated for several electrocatalytic reactions except electrochemical alcohol oxidation. Herein, we synthesize atomically dispersed platinum on ruthenium oxide (Pt 1 /RuO 2 ) using a simple impregnation-adsorption method. We find that Pt has good activity towards methanol oxidation in an alkaline media with mass is 15.3-times higher than of commercial Pt/C (6766 vs. 441 mA mg ‒1 ). In contrast, single atom carbon black inert. Further, the...

MoS₂nanosheet-coated CoS₂nanowire arrays supported on carbon cloth exhibited excellent HER activity with an overpotential of −87 mV (<italic>vs.</italic>RHE) at 10 mA cm⁻²due to the synergistic interactions between MoS₂and CoS₂.

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...

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...

Atomically precise metal nanoclusters (NCs) have emerged as an intriguing class of model catalysts for electrochemical CO2 reduction reactions (CO2RR). However, the interplay between interface environment (e.g., potential, cation concentration) and electron–proton transfer (ET/PT) kinetics─particularly in alkynyl-protected NCs─remains poorly understood. Here, we combined first-principles simulations experiments to investigate role potential effect on CO2RR performance a prototype...

Bionanocombinatorics is an emerging field that aims to use combinations of positionally encoded biomolecules and nanostructures create materials devices with unique properties or functions. The full potential this new paradigm could be accessed by exploiting specific noncovalent interactions between diverse palettes inorganic nanostructures. Advancement requires peptide sequences desired binding characteristics can rationally designed, based upon fundamental, molecular-level understanding...

Core–shell nanocomposites based on Au nanoparticle@zinc–iron-embedded porous carbons (Au@Zn–Fe–C) derived from metal–organic frameworks were prepared as bifunctional electrocatalysts for both oxygen reduction reaction (ORR) and hydrogen evolution (HER). A single nanoparticle of 50–100 nm in diameter was encapsulated within a carbon shell embedded with Zn–Fe compounds. The resulting Au@Zn–Fe–C hybrids exhibited apparent catalytic activity ORR 0.1 M KOH (with an onset potential +0.94 V vs RHE,...

Porous carbon-supported gold nanoparticles of varied sizes were prepared using thiolate-capped molecular Au25, Au38, and Au144 nanoclusters as precursors. The organic capping ligands removed by pyrolysis at controlled temperatures, resulting in good dispersion within the porous carbons, although nanoparticle somewhat larger than those respective nanocluster nanocomposites displayed apparent activity electroreduction oxygen alkaline solutions, which increased with decreasing dimensions. Among...

Controllable 3D assembly of multicomponent inorganic nanomaterials by precisely positioning two or more types nanoparticles to modulate their interactions and achieve multifunctionality remains a major challenge. The diverse chemical structural features biomolecules can generate the compositionally specific organic/inorganic needed create such assemblies. Toward this aim, we studied materials-specific binding peptides selected based upon affinity for Ag (AgBP1 AgBP2) Au (AuBP1 AuBP2)...

Developing bifunctional electrocatalysts for oxygen evolution reaction (OER) and hydrogen (HER) toward overall water splitting with high efficiency robust durability is highly desirable but very challenging. Herein, we report a efficient electrocatalyst based on Co@Ir core–shell nanoparticles encapsulated in nitrogen-doped porous carbon derived from metal–organic frameworks. The series of Co@Ir/NC-x samples were prepared through galvanic replacement IrCl3 Co/NC, which was obtained by...

Nitrogen and sulfur‐codoped graphene composites with Co 9 S 8 (NS/rGO‐Co) are synthesized by facile thermal annealing of oxides cobalt nitrate thiourea in an ammonium atmosphere. Significantly, 0.1 m KOH aqueous solution the best sample exhibits oxygen evolution reaction (OER) activity that is superior to benchmark RuO 2 catalysts, reduction (ORR) comparable commercial Pt/C, overpotential only −0.193 V reach 10 mA cm −2 for hydrogen (HER). With this single catalyst reversible...

A new type of gold nanoparticle with interesting energetics has been created by employing a mixture dithiol durene (Durene-DT) and monothiol phenylethanethiol (PhC2S) in the synthesis. The average composition these mixed thiolate clusters is characterized to be Au(130)(Durene-DT)(29)(PhC2S)(22). Continuous quantized core charging behaviors were observed at lower potentials voltammetric measurements, while ligand reaction core-ligand interactions higher potentials. absorbance spectrum...

Abstract The uptake of precious metals from electronic waste is environmental significance and potential commercial value. A facile bioreductive synthesis described for Au nanoparticles (ca. 20 nm) supported on N‐doped carbon (Au@NC), which was derived Au/ Pycnoporus sanguineus cells. interface charge transport between were confirmed by HRTEM XPS. Au@NC employed as an electrocatalyst the hydrogen evolution reaction (HER), exhibiting a small onset −54.1 mV (vs. RHE), Tafel slope 76.8 dec −1 ,...

Size and catalytic activity of gold nanoparticles prepared using ten metal-binding peptides provide insights into peptide sequence–binding–property relationships.