نتایج جستجو برای: نانوساختارهای cu2o

تعداد نتایج: 1919  

Journal: :Dalton transactions 2014
Ramkrishna Sahoo Soumen Dutta Mukul Pradhan Chaiti Ray Anindita Roy Tarasankar Pal Anjali Pal

The befitting capping capabilities of AsO4(3-) provide a stable Cu2O nanocatalyst from a galvanic reaction between a Cu(II) precursor salt and As(0) nanoparticles. This stable Cu2O hydrosol appears to be a suitable catalyst for the one-electron transfer reversible redox reaction between Eosin Y and NaBH4. The progress of the reaction relates to three different kinetic stages. In the presence of...

2016
Ji Ma Chunting Liu Kezheng Chen

In this work, a facile and versatile solution route was used to fabricate room-temperature ferromagnetic fish bone-like, pteridophyte-like, poplar flower-like, cotton-like Cu@Cu2O architectures and golfball-like Cu@ZnO architecture. The ferromagnetic origins in these architectures were found to be around metal-semiconductor interfaces and defects, and the root cause for their ferromagnetism lay...

شفیع‌خانی, عزیزاله, نایب‌صادقی, صفورا, وساقی, محمدعلی,

 Carbon nanofibers (CNFs) decorated with Cu2O particles were grown on a Ni catalyst layer deposited on a Cu substrate by thermal. chemical vapor deposition from liquid petroleum gas. Ni catalyst nanoparticles with different sizes were produced in an electroplating system at 35˚C. These nanoparticles provide the nucleation sites for CNF growth, removing the need for a buffer layer. High temperat...

Journal: :Sustainability 2023

In this study, semiconductor oxide cuprite (Cu2O) and indium tin (ITO) heterojunction solar cells with without a 10 nm thick titanium (Ti) thin film as the buffer layer were fabricated characterized for comparison. The Cu2O was formed by low-cost electrodeposition, Ti ITO layers deposited on glass substrate sputtering. interfacial microstructures, surface topology, electrical photovoltaic prope...

Journal: :ACS Applied Materials & Interfaces 2021

TiO2/Cu2O/CuO multi-nanolayers highly sensitive toward volatile organic compounds (VOCs) and H2 have been grown in various thicknesses by a cost-effective reproducible combined spray–sputtering–annealing approach. The ultrathin TiO2 films were deposited spray pyrolysis on top of sputtered–annealed Cu2O/CuO nanolayers to enhance their gas sensing performance improve protection against corrosion ...

Journal: :Chemical communications 2001
P Sinha S Roy

Facile synthesis of homoallylic alcohols is achieved from allyl halides and aldehydes or ketones over an all-oxide heterogenous media involving beta-SnO and catalytic Cu2O.

Journal: :Angewandte Chemie 2023

Die elektrochemische Umwandlung von Nitrat in Ammoniak ist ein wichtiger und nachhaltiger Ansatz zur Wiederherstellung des weltweit gestörten Stickstoffkreislaufs. rationale Entwicklung Katalysatoren für die Nitratreduktionsreaktion (NO3RR) auf der Grundlage eines detaillierten Verständnisses Reaktionsmechanismus großer Bedeutung. Wir berichten über einen Cu2O+Co3O4-Tandemkatalysator, NH3-Produ...

Journal: :Journal of CO2 utilization 2023

Mixing TiO2 with Mo2C has recently been proposed to improve the photocatalytic conversion of CO2 methanol under visible light irradiation, although further efforts are still needed enhance process performance. In this context, use p-type semiconductors (i.e., Cu2O) in co-doping strategies can not only redistribution electric charges due its narrowing bandgap, but also selectivity reaction towar...

Journal: :Catalysts 2022

The selective oxidation of styrene with highly efficient, environmentally benign, and cost-effective catalysts are great importance for sustainable chemical processes. Here, we develop an in situ self-assembly strategy to decorate Cu-based metal-organic framework (MOF) Cu-BDC-NH2 nanocrystals on Cu2O octahedra construct a series Cu2O@Cu-BDC-NH2 styrene. Using H2O2 as green oxidants, the optimiz...

Journal: :Crystals 2021

A series of copper-based systems containing two different nanocomposites (Cu2O/CuO and Cu2O/Cu) was synthesized by the egg white assisted auto-combustion route. This method distinguished simplicity its steps, low cost, one-pot synthesis process at temperature and, short time. The characterization as prepared carried out using X-ray diffraction (XRD), Fourier-transform infrared (FTIR), Scanning ...

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