| Full text | |
| Author(s): |
Pastrian, Fabian A. C.
[1]
;
da Silva, Anderson G. M.
[1]
;
Dourado, Andre H. B.
[1]
;
de Lima Batista, Ana P.
[1]
;
de Oliveira-Fiho, Antonio G. S.
[2]
;
Quiroz, Jhon
[1]
;
de Oliveira, Daniela C.
[3]
;
Camargo, Pedro H. C.
[1]
;
Cordoba de Torresi, Susana I.
[1]
Total Authors: 9
|
| Affiliation: | [1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Ribeirao Preto, SP - Brazil
[3] Ctr Nacl Pesquisa Energia & Mat, Lab Nacl Luz Sincrotron, Campinas, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | ACS CATALYSIS; v. 8, n. 7, p. 6265-6272, JUL 2018. |
| Web of Science Citations: | 10 |
| Abstract | |
By a combination of theoretical and experimental design, we unraveled the effect of [111] and [100] surface facets on the electrocatalytic sensing activities and stabilities of metal oxides by employing Cu2O crystals as a model substrate and glucose as the analyte. We started by theoretically investigating the potential energy curves for the glucose interaction with the Cu2O [111] and [100] surface facets. We found that the glucose interaction energy was significantly higher for the [100] facets than for the [111] facets. Then, we experimentally observed that their electrocatalytic sensing performance displayed shape dependent behavior. While the catalytic activities followed the order cubes > cuboctahedrons > octahedrons, their stabilities showed the opposite trend. The higher catalytic activity enabled by the [100] facets is explained by their stronger interaction with glucose. On the other hand, the higher stability allowed by the [111] facets is justified by their lower concentration of oxygen vacancies and weaker interaction with O-2 relative to those of the [100] surface. (AU) | |
| FAPESP's process: | 15/22203-6 - N-Heterocyclic Carbene Based Compounds in CO2 Activation: A Computational Approach |
| Grantee: | Ana Paula de Lima Batista |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/11714-0 - Reactivity, transformation, fixation, and spectroscopy of systems involving CO2 |
| Grantee: | Antonio Gustavo Sampaio de Oliveira Filho |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage |
| Grantee: | Roberto Manuel Torresi |
| Support Opportunities: | Research Projects - Thematic Grants |