Results 41 to 50 of about 529,483 (274)

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

open access: yesAdvanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni   +10 more
wiley   +1 more source

Single/dual-metal active-site oxides for rechargeable zinc-air batteries: Fundamental properties, advancements, challenges, and future perspectives

open access: yesCarbon Future
Rechargeable zinc-air batteries (RZABs) are considered one of the most promising candidates for advanced energy storage and conversion in the near future.
Yunrui Li   +5 more
doaj   +1 more source

Density functional theory study of active sites on nitrogen-doped graphene for oxygen reduction reaction

open access: yesRoyal Society Open Science, 2021
Oxygen reduction reaction (ORR) remains challenging due to its complexity and slow kinetics. In particular, Pt-based catalysts which possess outstanding ORR activity are limited in application with high cost and ease of poisoning.
Ping Yan   +5 more
doaj   +1 more source

Z‐Scheme Water Splitting Systems Based on Solid‐State Electron Conductors

open access: yesAdvanced Functional Materials, EarlyView.
This review examines the latest advances in Z‐scheme overall water splitting (OWS) systems for solar hydrogen production. These systems consist of suspended or immobilized hydrogen evolution photocatalysts (HEPs) and oxygen evolution photocatalysts (OEPs).
Chen Gu   +3 more
wiley   +1 more source

Enhancing Oxygen Reduction Reaction Activity on Pt/C Catalysts for PEFCs Using Phosphonium Ionic Liquid Layers: Effects of Proton Introduction and Physicochemical Properties

open access: yesElectrochemistry
Polymer electrolyte fuel cells (PEFCs) have attracted significant attention as clean energy conversion systems. Pt nanoparticles are commonly used as cathode catalysts in PEFCs due to their high activity for the oxygen reduction reaction (ORR).
Hirohisa YAMADA   +8 more
doaj   +1 more source

Top Quark Physics: Summary [PDF]

open access: yes, 2001
This talk summarizes recent progress in top quark physics studies for high energy linear electron-positron colliders as presented at the LCWS2000 Workshop at Fermilab.
Orr, Lynne H.
core   +3 more sources

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Late-time decay of perturbations outside extremal charged black hole

open access: yes, 2016
We analyze the late-time decay of scalar perturbations in extremal Reissner-Nordstrom spacetime. We consider individual spherical-harmonic modes $l$ of a test massless scalar field, restricting our attention to initial data of compact support, with ...
Sela, Orr
core   +1 more source

Book Review: Converting Women: Gender and Protestant Christianity in Colonial South India [PDF]

open access: yes, 2005
A review of Converting Women: Gender and Protestant Christianity in Colonial South India by Eliza F ...
Orr, Leslie C.
core   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

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