Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation
Electrocatalysis is a promising way to treat water contaminated by harmful organic compounds. The combination of nanoparticles supported on a conductive substrate allows degradation to occur under less energetic conditions. This work evaluated the effect of deposition of bismuth vanadate (BVO) parti...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Photochem |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-7256/3/1/3 |
| _version_ | 1797609512490762240 |
|---|---|
| author | Bruna Guimarães Isecke Arthur Saldanha Guimarães Guilhermina Ferreira Teixeira Flavio Colmati Aparecido Ribeiro de Souza Isaac Yves Lopes de Macêdo Lucas Mattos Duarte Sergio Botelho de Oliveira André Gabriel Carmo Costa Vernon Sydwill Somerset Eric de Souza Gil |
| author_facet | Bruna Guimarães Isecke Arthur Saldanha Guimarães Guilhermina Ferreira Teixeira Flavio Colmati Aparecido Ribeiro de Souza Isaac Yves Lopes de Macêdo Lucas Mattos Duarte Sergio Botelho de Oliveira André Gabriel Carmo Costa Vernon Sydwill Somerset Eric de Souza Gil |
| author_sort | Bruna Guimarães Isecke |
| collection | DOAJ |
| description | Electrocatalysis is a promising way to treat water contaminated by harmful organic compounds. The combination of nanoparticles supported on a conductive substrate allows degradation to occur under less energetic conditions. This work evaluated the effect of deposition of bismuth vanadate (BVO) particles on pencil-type graphite electrodes. BVO particles were obtained by ultrasonic irradiation with coprecipitation. Then, they were deposited on the surface of a graphite electrode by the impregnation method. A 2<sup>3</sup>-design was used to optimize electrode fabrication. Matter Dispersion Spectroscopy (SEM/EDS), X-Ray Diffraction (XRD) and Dynamic Light Scattering (DLS) were used for characterization. Electrochemical characterization was performed by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The results confirmed the synthesis of BVO@C (BVO/graphite). Furthermore, BVO@C significantly increased the electroactive surface area of the electrode, decreased the electron transfer resistance, and significantly increased the electron transfer rate to a greater extent than the electrode without any modification. To prove that the performance of BVO@C is better than the pure electrode, photoelectrocatalysis (PEC) and electrocatalysis (EC) were performed in a rhodamine B (RhB) solution. The results showed that in 5 min of treatment with unmodified electrode, BVO@C EC system and BVO@C PEC system, there was degradation of 31.53%, 46.09% and 58.17% respectively, reaching 95%, 98% and 99.64%, respectively, in 30 min. The reaction rate constants were calculated and to be found k = 0.10272 m<sup>−1</sup>, k = 0.12221 m<sup>−1</sup> and k= 0.15022 m<sup>−1</sup> for the unmodified graphite, BVO@C EC System and BVO@C PEC system, respectively. These results demonstrate that the BVO@C electrodes are efficient for application in a wide range of treatments, including the treatment of organic pollutants. |
| first_indexed | 2024-03-11T06:01:27Z |
| format | Article |
| id | doaj.art-a0d3b7886cc7428fb0e80a0623c40534 |
| institution | Directory Open Access Journal |
| issn | 2673-7256 |
| language | English |
| last_indexed | 2024-03-11T06:01:27Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photochem |
| spelling | doaj.art-a0d3b7886cc7428fb0e80a0623c405342023-11-17T13:17:57ZengMDPI AGPhotochem2673-72562023-01-0131385810.3390/photochem3010003Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical DegradationBruna Guimarães Isecke0Arthur Saldanha Guimarães1Guilhermina Ferreira Teixeira2Flavio Colmati3Aparecido Ribeiro de Souza4Isaac Yves Lopes de Macêdo5Lucas Mattos Duarte6Sergio Botelho de Oliveira7André Gabriel Carmo Costa8Vernon Sydwill Somerset9Eric de Souza Gil10Faculty of Pharmacy, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilFaculty of Pharmacy, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilInstitute of Chemistry, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilInstitute of Chemistry, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilInstitute of Chemistry, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilFaculty of Pharmacy, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilInstitute of Chemistry, Fluminense Federal University, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilDepartment of Chemistry, Federal Institute of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilFaculty of Pharmacy, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilDepartment of Chemistry, Cape Peninsula University of Technology, Bellville 7535, South AfricaFaculty of Pharmacy, Federal University of Goiás, Av. Universitária s/n, Goiânia 74605-220, GO, BrazilElectrocatalysis is a promising way to treat water contaminated by harmful organic compounds. The combination of nanoparticles supported on a conductive substrate allows degradation to occur under less energetic conditions. This work evaluated the effect of deposition of bismuth vanadate (BVO) particles on pencil-type graphite electrodes. BVO particles were obtained by ultrasonic irradiation with coprecipitation. Then, they were deposited on the surface of a graphite electrode by the impregnation method. A 2<sup>3</sup>-design was used to optimize electrode fabrication. Matter Dispersion Spectroscopy (SEM/EDS), X-Ray Diffraction (XRD) and Dynamic Light Scattering (DLS) were used for characterization. Electrochemical characterization was performed by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The results confirmed the synthesis of BVO@C (BVO/graphite). Furthermore, BVO@C significantly increased the electroactive surface area of the electrode, decreased the electron transfer resistance, and significantly increased the electron transfer rate to a greater extent than the electrode without any modification. To prove that the performance of BVO@C is better than the pure electrode, photoelectrocatalysis (PEC) and electrocatalysis (EC) were performed in a rhodamine B (RhB) solution. The results showed that in 5 min of treatment with unmodified electrode, BVO@C EC system and BVO@C PEC system, there was degradation of 31.53%, 46.09% and 58.17% respectively, reaching 95%, 98% and 99.64%, respectively, in 30 min. The reaction rate constants were calculated and to be found k = 0.10272 m<sup>−1</sup>, k = 0.12221 m<sup>−1</sup> and k= 0.15022 m<sup>−1</sup> for the unmodified graphite, BVO@C EC System and BVO@C PEC system, respectively. These results demonstrate that the BVO@C electrodes are efficient for application in a wide range of treatments, including the treatment of organic pollutants.https://www.mdpi.com/2673-7256/3/1/3dye degradationphotoelectrocatalysisorganic pollutantswater remediation |
| spellingShingle | Bruna Guimarães Isecke Arthur Saldanha Guimarães Guilhermina Ferreira Teixeira Flavio Colmati Aparecido Ribeiro de Souza Isaac Yves Lopes de Macêdo Lucas Mattos Duarte Sergio Botelho de Oliveira André Gabriel Carmo Costa Vernon Sydwill Somerset Eric de Souza Gil Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation Photochem dye degradation photoelectrocatalysis organic pollutants water remediation |
| title | Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation |
| title_full | Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation |
| title_fullStr | Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation |
| title_full_unstemmed | Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation |
| title_short | Bismuth Vanadate-Nanostructured Graphite Electrodes for Rhodamine B Photoelectrochemical Degradation |
| title_sort | bismuth vanadate nanostructured graphite electrodes for rhodamine b photoelectrochemical degradation |
| topic | dye degradation photoelectrocatalysis organic pollutants water remediation |
| url | https://www.mdpi.com/2673-7256/3/1/3 |
| work_keys_str_mv | AT brunaguimaraesisecke bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT arthursaldanhaguimaraes bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT guilherminaferreirateixeira bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT flaviocolmati bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT aparecidoribeirodesouza bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT isaacyveslopesdemacedo bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT lucasmattosduarte bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT sergiobotelhodeoliveira bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT andregabrielcarmocosta bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT vernonsydwillsomerset bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation AT ericdesouzagil bismuthvanadatenanostructuredgraphiteelectrodesforrhodaminebphotoelectrochemicaldegradation |