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Study of the mechanism of oxidation of water by catalysts with structure analogous to Prussian blue

Grant number: 18/25092-9
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): August 01, 2019
Effective date (End): September 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
Principal Investigator:Juliano Alves Bonacin
Grantee:Rafael Lavagnolli Germscheidt
Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated scholarship(s):21/11358-0 - Scanning electrochemical microscopy (SECM) coupled with Raman to study the WOR mechanism with Prussian blue analogues catalysts, BE.EP.DD


Hydrogen obtained through water splitting can be regarded as an alternative to fossil fuels. Despite its seeming simplicity, the water oxidation reaction is kinetically sluggish and thermodynamically unfavorable. In this context, a catalyst is required to overcome the energetic barrier. One of the major challenges in this area is the understanding of the mechanisms of reaction of catalysts based on Earth-abundant elements, which can operate in mild conditions of reaction. Therefore, the objective of this project is the elucidation of the mechanisms of water oxidation by Prussian blue analogues catalysts working at pH=7. To achieve the expected results, ex situ characterization, and spectroelectrochemistry studies for in situ in operando mode will be used. (AU)

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ZAMBIAZI, PRISCILLA J.; APARECIDO, GABRIEL DE O.; FERRAZ, THIAGO V. DE B.; SKINNER, WILLIAM S. J.; YOSHIMURA, RAFAEL G.; MOREIRA, DANIEL E. B.; GERMSCHEIDT, RAFAEL L.; NASCIMENTO, LUCAS L.; PATROCINIO, ANTONIO OTAVIO T.; FORMIGA, ANDRE L. B.; et al. Electrocatalytic water oxidation reaction promoted by cobalt-Prussian blue and its thermal decomposition product under mild conditions. DALTON TRANSACTIONS, v. 49, n. 45, p. 16488-16497, . (19/20688-3, 18/25092-9, 13/22127-2, 17/23960-0)
ROCHA, RAQUEL G.; RAMOS, DAVID L. O.; FARIA, LUCAS V. DE; GERMSCHEIDT, RAFAEL L.; SANTOS, DIEGO P. DOS; BONACIN, JULIANO A.; MUNOZ, RODRIGO A. A.; RICHTER, EDUARDO M.. Printing parameters affect the electrochemical performance of 3D-printed carbon electrodes obtained by fused deposition modeling. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 925, p. 8-pg., . (16/21070-5, 18/25092-9, 13/22127-2)
RAFAEL L. GERMSCHEIDT; CLEIBER C. MORAIS; DANIELLE S. FRANCISCHINI; MARCO AURÉLIO Z. ARRUDA; JULIANO A. BONACIN. Photochemical Pre-Treatment to Quantify Iron in Thin Films. Journal of the Brazilian Chemical Society, v. 34, n. 7, p. 958-966, . (17/23960-0, 21/05976-2, 17/50085-3, 18/25207-0, 17/11986-5, 19/00063-9, 19/24445-8, 13/22127-2, 19/00018-3, 14/50867-3, 18/25092-9)
THEODORA W. VON ZUBEN; DANIEL E. B. MOREIRA; RAFAEL L. GERMSCHEIDT; RAFAEL G. YOSHIMURA; DANIEL S. DORRETTO; ANA B. S. DE ARAUJO; AIRTON G. SALLES JR.; JULIANO A. BONACIN. Is Hydrogen Indispensable for a Sustainable World? A Review of H2 Applications and Perspectives for the Next Years. Journal of the Brazilian Chemical Society, v. 33, n. 8, p. 824-843, . (19/20688-3, 17/23960-0, 21/05976-2, 18/25092-9, 13/22127-2, 17/11986-5)
VON ZUBEN, THEODORA W.; MOREIRA, DANIEL E. B.; GERMSCHEIDT, RAFAEL L.; YOSHIMURA, RAFAEL G.; DORRETTO, DANIEL S.; DE ARAUJO, ANA B. S.; SALLES JR, AIRTON G.; BONACIN, JULIANO A.. Is Hydrogen Indispensable for a Sustainable World? A Review of H-2 Applications and Perspectives for the Next Years. Journal of the Brazilian Chemical Society, v. 33, n. 8, p. 20-pg., . (17/11986-5, 21/05976-2, 19/20688-3, 13/22127-2, 18/25092-9)
GERMSCHEIDT, RAFAEL L.; MOREIRA, DANIEL E. B.; YOSHIMURA, RAFAEL G.; GASBARRO, NATHALIA P.; DATTI, EVANDRO; DOS SANTOS, PAMYLA L.; BONACIN, JULIANO A.. Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050. ADVANCED ENERGY AND SUSTAINABILITY RESEARCH, v. 2, n. 10, p. 20-pg., . (19/20688-3, 18/25092-9, 13/22127-2, 17/11986-5, 17/23960-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
GERMSCHEIDT, Rafael Lavagnolli. Melhora da performance da reação de oxidação da água pelo design de vacancias formadas eletroquimicamente em catalisadores a base de análogos do azul da Prússia. 2023. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Instituto de Química Campinas, SP.

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