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Type: Artigo
Title: Synthesis and characterization of self-organized oxide layer grown on ti-cu alloys system for CO 2 reduction
Author: Almeida, Juliana de
Câmara, Stella Hoffman
Bertazzoli, Rodnei
Silva, Ricardo Galdino
Rodrigues, Christiane Arruda
Abstract: Ti-Cu alloys could be used as a substrate to produce photoelectrode pn-heterojunctions to increase copper stability and consequently to improve photoconversion of CO2. Cu–Ti–O films were grown by anodizing directly of Ti–x%at.Cu (x= 0.5, 5.5, 10 and 50) and after these alloys were submitted different kinds heat treatment (annealing or quenching) to compare a directly influence of presents phases in nanotubes alloy substrate after it preparation by voltaic arc melting following a annealed or rapid quenching as heat treatment. All films presented TiO2 and copper dioxides in its compositions. These electrodes showed higher absorbance in visible light, anodic current for less copper alloy cathodic current equiatomic composition and copper stability for all cases due cu atomic insertion inside TiO2 crystal lattice and sharing oxygen atomic. The cathodic current varied in function of Cu concentration in the alloy
Subject: Caracterização
Ligas (Metalurgia)
Dióxido de carbono
Country: Estados Unidos
Editor: Electrochemical Society
Rights: Fechado
Identifier DOI: 10.1149/08907.0045ecst
Date Issue: 2019
Appears in Collections:FEM - Artigos e Outros Documentos

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