The Role of Zn Ions in the Structural, Surface, and Gas-Sensing Properties of SnO2:Zn Nanocrystals Synthesized via a Microwave-Assisted Route

Autor: Luís F. da Silva, Mattia A. Lucchini, Ariadne C. Catto, Waldir Avansi Jr., Sandrine Bernardini, Khalifa Aguir, Markus Niederberger, Elson Longo

Publikováno v: Sensors, Vol 24, Iss 1, p 140 (2023)

Although semiconducting metal oxide (SMOx) nanoparticles (NPs) have attracted attention as sensing materials, the methodologies available to synthesize them with desirable properties are quite limited and/or often require relatively high energy consu

Externí odkaz: https://doaj.org/article/d50630f5dbdd46ffbb98f11d45ba0a35

Modificação e cristalização do sistema vítreo BaO-B2O3-RO2 (R=Ti, Si) utilizando a radiação de um laser de CO2

Autor: Waldir Avansi Junior

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

Este trabalho apresenta um estudo sobre a modificação e cristalização superficial dos sistemas vítreos 40BaO-45B2O3-15TiO2 (BBT) e 42BaO-42B2O3-16SiO2 (BBS) utilizando a radiação proveniente de um laser modulado de CO2. Três diferentes parâm

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/76/76132/tde-06052008-144955/

Hydrothermal synthesis of Ti oxide nanostructures and TiO2:SnO2 heterostructures applied to the photodegradation of rhodamine B

Autor: Mourão, Henrique A.J.L., Junior, Waldir Avansi, Ribeiro, Caue

Publikováno v: In Materials Chemistry and Physics 15 August 2012 135(2-3):524-532

Insights into formation of anatase TiO2 nanoparticles from peroxo titanium complex degradation under microwave-assisted hydrothermal treatment

Autor: Osmando F. Lopes, Caue Ribeiro, Waldir Avansi, Raul Arenal, Vagner R. de Mendonça

Publikováno v: Ceramics International. 45:22998-23006

Several methods for the synthesis of anatase TiO2 have been reported in the literature. In particular, the microwave-assisted hydrothermal crystallization of Ti-peroxocomplexes has enabled the phase and morphological control of TiO2 nanoparticles by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::225cf9477e3a33a82f9ede5314eaf110
https://doi.org/10.1016/j.ceramint.2019.07.345

BTEX Gas Sensor Based on Hematite Microrhombuses

Autor: Tomas Fiorido, Luís F. da Silva, João V.N. de Palma, Khalifa Aguir, Waldir Avansi, Sandrine Bernardini, Ariadne C. Catto, Marc Bendahan

Publikováno v: Sensors and Actuators B: Chemical
Sensors and Actuators B: Chemical, Elsevier, 2020, pp.128817. ⟨10.1016/j.snb.2020.128817⟩
Sensors and Actuators B: Chemical, 2021, 326, pp.128817. ⟨10.1016/j.snb.2020.128817⟩

International audience; Over the past fifty years, gas sensors based on metal semiconducting oxides (MOXs) have drawn attention due to their performance in detecting various gases. Thus, we report herein on a BTEX gases sensor based on hematite (α-F

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20b8e22299bd7df1246f38989e5af7f7
https://hal-amu.archives-ouvertes.fr/hal-02928874