Results 11 to 20 of about 677 (97)

Designing Atomically Precise and Robust COF Hybrids for Efficient Photocatalytic CO₂ Reduction. [PDF]

open access: yesSmall
The rational design of a novel covalent organic framework (COF)‐based hybrid CO2 photocatalyst allows for the atomistic level‐resolution of immobilized Rhenium(I) centers in the porous structure. The ReI‐decorated dibenzochrysene COF shows outstanding photocatalytic performance with a CO production rate of 1.16 mmol g−1 h−1 and long‐term photostability
Spies L   +8 more
europepmc   +2 more sources

Surface Charge Modulation in Covalent Organic Frameworks for Controlled Pt-Photodeposition and Enhanced Photocatalytic Hydrogen Evolution. [PDF]

open access: yesSmall
This study demonstrates that the photocatalytic hydrogen evolution efficiency of COFs can be effectively controlled by modulating surface charge via post‐synthetic linkage conversion from imine to amide. This unique interfacial modification approach switches the surface charge of COFs and introduces a shift in the reaction mechanism of the in situ Pt ...
Paliušytė K   +8 more
europepmc   +2 more sources

Study of Thorium Fuel Cycles for Light Water Reactor VBER‐150

open access: yesInternational Journal of Nuclear Energy, Volume 2013, Issue 1, 2013., 2013
The main objective of this paper is to examine the use of thorium‐based fuel cycle for the transportable reactors or transportable nuclear power plants (TNPP) VBER‐150 concept, in particular the neutronic behavior. The thorium‐based fuel cycles included Th232+Pu239, Th232+U233, and Th232+U and the standard design fuel UOX.
Daniel Evelio Milian Lorenzo   +7 more
wiley   +1 more source

Peróxido de hidrogênio e solução nutritiva salina no cultivo hidropônico de abobrinha italiana

open access: yesSemina: Ciências Agrárias, 2022
A salina vem sendo utilizada na irrigação principalmente água à baixa disponibilidade de água doce principalmente em regiões áridas e semiáridas. No entanto, o uso destas águas pode ajudar o crescimento e o desenvolvimento das culturas.
Maila Vieira Dantas   +7 more
doaj   +1 more source

Investigation of a Cu/Pd Bimetallic System Electrodeposited on Boron‐Doped Diamond Films for Application in Electrocatalytic Reduction of Nitrate

open access: yesInternational Journal of Electrochemistry, Volume 2012, Issue 1, 2012., 2012
The Cu/Pd bimetallic system electrodeposited on boron‐doped diamond (BDD) films for application, as electrode material in the electrochemical reduction of nitrate was studied. The electrochemical behavior of Cu, Pd, and Cu/Pd bimetallic system was evaluated by cyclic voltammetry. From these results, the formation of the Cu/Pd composite was verified. In
Jorge T. Matsushima   +5 more
wiley   +1 more source

Narrativa da mídia sobre benefícios e impactos da produção de hidrogênio verde: explorando questões ambientais e sociais [PDF]

open access: yesCadernos EBAPE.BR
Resumo O artigo analisa a narrativa da mídia brasileira na comunicação sobre a produção de hidrogênio verde em portais de notícias. Foi adotada a metodologia de mineração de texto no Google Notícias, utilizando o termo hidrogênio verde, para realizar a ...
FELIPE MOURA OLIVEIRA   +3 more
doaj   +1 more source

Avaliação da permeação por hidrogênio em corpos de prova tracionados do aço API 5L X60 utilizado no setor de petróleo e gás

open access: yesRevista Principia, 2015
As propriedades mecânicas de dutos podem ser prejudicadas pela interação hidrogênio-metal devido aos efeitos de substâncias ácidas, tais como o H2S, cuja ação isolada ou combinada com as tensões atuantes na estrutura pode gerar processos de degradação ...
Misael Souto de Oliveira   +4 more
doaj   +1 more source

Estudo da interação e dos danos causados pelo hidrogênio aos metais

open access: yesVetor, 2016
Dentre os vários tipos de degradações as quais os metais estão propensos, a interação com o hidrogênio é uma das menos esclarecidas e que vem ganhando importância devido à descoberta de novas reservas de petróleo e da possibilidade de utilização do ...
Adilar Gonçalves dos Santos Junior   +1 more
doaj   +4 more sources

Synergistic Pd-La Catalysts on ATO for Clean Conversion of Methane into Methanol and Electricity

open access: yesReactions
This study investigates the electrochemical conversion of methane to methanol using fuel-cell-type reactors with palladium- and lanthanum-based catalysts supported on antimony-doped tin oxide (ATO).
Paulo Victor. R. Gomes   +5 more
doaj   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, Volume 36, Issue 21, 12 March 2026.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

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