| Full text | |
| Author(s): |
Valim, Ricardo B.
[1, 2]
;
Trevelin, Leandro C.
[2]
;
Sperandio, Daniel C.
[1]
;
Carneiro, Jussara F.
[2]
;
Santos, Mauro C.
[3]
;
Rodrigues, Liana A.
[1]
;
Rocha, Robson S.
[1]
;
Lanza, V, Marcos R.
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Lorena Sch Engn, Estr Municipal Campinho Sn, BR-12602810 Lorena, SP - Brazil
[2] V, Univ Sao Paulo, Sao Carlos Inst Chem, Av Trabalhador Sao Carlense 400, BR-13560970 Sao Carlos, SP - Brazil
[3] Fed Univ ABC, Lab Electrochem & Nanostruct Mat, Ctr Nat & Human Sci, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 9, n. 6 DEC 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The present study investigates the modification of carbon black with ruthenium and niobium oxides and the application of the modified carbon material for the electrogeneration of hydrogen peroxide via oxygen reduction reaction. The modified carbon materials were characterized electrochemically using the porous microlayer technique on rotating ring-disc electrode. The modification of amorphous carbon black with 5.0% Ru05Nb95O (5.0% Ru05Nb95O/C) contributed to the enhancement of selectivity toward H2O2 electrogeneration, with current efficiency of 84.6% and a shift in potential of - 0.300 V. The most efficient material (5.0% Ru05Nb95O/C) was characterized by X-ray absorption spectroscopy, X-ray fluorescence and scanning electron microscopy. The application of gas diffusion electrodes for H2O2 generation in acid medium yielded 281.6 mg L-1 of H2O2 in 120 min of experiment at current density of 100 mA cm(-2). The concentration of H2O2 electrogenerated on the modified carbon material was 33.6% higher compared to the concentration electrogenerated on the unmodified carbon material (210.8 mg L-1) under the same experimental conditions. (AU) | |
| FAPESP's process: | 11/14314-1 - Study of the modification of gas diffusion electrodes with redox catalysts for in situ electrogeneration of hydrogen peroxide (H2O2) |
| Grantee: | Marcos Roberto de Vasconcelos Lanza |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination |
| Grantee: | Marcos Roberto de Vasconcelos Lanza |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/12597-0 - Gas difusion electrodes production modified with bimetallic oxides of Nb, Mo, Pd e Zr for the production of H2O2 in situ |
| Grantee: | Leandro Cesar Trevelin |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 18/10492-1 - Photocatalytic evaluation of heterojunctions semiconductor/ZnO/carbon xerogel in the photodegradation of 4-chlorophenol in both fluidized bed and batch reactors |
| Grantee: | Liana Alvares Rodrigues |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 19/00239-0 - "Synthesis and characterization of new electrocatalysts for hydrogen peroxide electrogeneration" |
| Grantee: | Jussara Fernandes Carneiro |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 13/16690-6 - Study of the degradation of the antibiotics amoxicillin and ampicillin using gas diffusion electrodes modified with quinones (2-tert-butyl-9 ,10-anthraquinone and 2-ethyl-9,10-anthraquinone) |
| Grantee: | Fernando Lindo Silva |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/02762-5 - Development of technologies to prevent pollution: degradation and monitoring online of antibiotics in sewage |
| Grantee: | Robson da Silva Rocha |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Research Projects - Thematic Grants |