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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Photochemical Pre-Treatment to Quantify Iron in Thin Films

Full text
Author(s):
Rafael L. Germscheidt [1] ; Cleiber C. Morais [2] ; Danielle S. Francischini [3] ; Marco Aurélio Z. Arruda [4] ; Juliano A. Bonacin [5]
Total Authors: 5
Affiliation:
[1] Universidade Estadual de Campinas. Instituto de Química - Brasil
[2] Universidade Estadual de Campinas. Instituto de Química - Brasil
[3] Universidade Estadual de Campinas. Instituto de Química - Brasil
[4] Universidade Estadual de Campinas. Instituto de Química - Brasil
[5] Universidade Estadual de Campinas. Instituto de Química - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 34, n. 7, p. 958-966, 2023-06-23.
Abstract

Metal-based catalysts are indispensable in modern chemistry and one of the biggest challenges for industrial applications is to quantify their performance and stability. The metrics of performance can be obtained in terms of the turnover number and turnover frequency, and the stability might be associated with the leaching of the heterogeneous catalysts. Thus, metal quantification is the starting point to understand and evaluate the features of catalysts. Among the technologies for metal determination, spectrophotometric analysis stands out for being cheap and easy to perform. However, the challenge is the sample preparation to direct quantification from the heterogeneous materials. Herein, it is shown how important is the photochemical pre-treatment for the quantification of the total iron from heterogeneous thin films composed of iron-based materials. The photochemical approach was used to ensure a full dissociation of iron ions before the quantification. This method was revealed to be highly effective and precise, having a wide range of applications for different iron-based catalysts. (AU)

FAPESP's process: 19/24445-8 - EMU granted in process 2018/25207-0: inductively coupled plasma mass spectrometer
Grantee:Marco Aurelio Zezzi Arruda
Support Opportunities: Multi-user Equipment Program
FAPESP's process: 19/00063-9 - Quantitative bioimaging of Cd and Pb through laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS imaging) to tree rings and speleothems
Grantee:Danielle da Silva Francischini
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/50085-3 - PIRE: climate research education in the Americas using tree-ring speleothem examples (PIRE-CREATE)
Grantee:Francisco William da Cruz Junior
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
Grantee:Ana Flávia Nogueira
Support Opportunities: Research Grants - Applied Research Centers Program
FAPESP's process: 13/22127-2 - Development of novel materials strategic for integrated analytical devices
Grantee:Lauro Tatsuo Kubota
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 14/50867-3 - INCT 2014: National Institute of Science and Technology in Bioanalysis
Grantee:Marco Aurelio Zezzi Arruda
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/23960-0 - Study of the mechanism of water oxidation by catalysts operating at pH7 and its incorporation in electrodes printed in 3D
Grantee:Juliano Alves Bonacin
Support Opportunities: Regular Research Grants
FAPESP's process: 19/00018-3 - Study of inert supports as solid matrix for the quantification of Zn and Cu in tree rings and speleothems using LA-ICP-MS
Grantee:Pedro dos Santos Moreau
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 18/25207-0 - Nanometallomics applied to soybean cultivation for studying the effects of metal-related nanoparticles
Grantee:Marco Aurelio Zezzi Arruda
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/25092-9 - Study of the mechanism of oxidation of water by catalysts with structure analogous to Prussian blue
Grantee:Rafael Lavagnolli Germscheidt
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 21/05976-2 - Strategies for improving the performance of Prussian blue-based catalysts in water oxidation reactions under mild conditions
Grantee:Juliano Alves Bonacin
Support Opportunities: Regular Research Grants